2013 Mercedes-benz C Class Owners Manual

belt anchorage has been modified.

Damage caused to seat belts in an accident may not be visible, e.g. by splinters of glass. Modified or damaged seat belts can tear or fail, for example in the event of an accident. Modified Emergency Tensioning Devices may be deployed unintentionally or fail to be deployed when required. There is an increased risk of injury, possibly even fatal. Never modify seat belts, Emergency Tensioning Devices, seat belt anchorages and inertia reels. Ensure that seat belts are not damaged or worn and are clean.

Only use seat belts that have been approved for your vehicle by Mercedes-Benz. The use of seat belts and infant and child restraint systems is required by law in: Rall 50 states Rthe U.S. territories Rthe District of Columbia Rall Canadian provinces Even where this is not required by law, all vehicle occupants should correctly fasten their seat belts before starting the journey. i See "Children in the vehicle"

(Y page 60) for further information on infants and children traveling in the vehicle as well as on child restraint systems.

56 Occupant safety

Correct use of the seat belts G WARNING USE SEAT BELTS PROPERLY RSeat belts can only work when used

properly. Never wear seat belts in any other way than as described in this section, as that could result in serious injuries in the event of an accident.

REach occupant should wear their seat belt at all times, because seat belts help reduce the likelihood of and potential severity of injuries in accidents, including rollovers. The integrated restraint system includes SRS (driver front air bag, driver's side knee bag, front-passenger front air bag, side impact air bags, pelvis air bags, window curtain air bags for the side windows), Emergency Tensioning Devices, seat belt force limiters, and front seat knee bolsters. The system is designed to enhance the protection offered to properly belted occupants in certain frontal (front air bags, driver's side knee bag and ETDs) and side (side impact air bags, window curtain air bags, and ETDs) impacts which exceed preset deployment thresholds and in certain rollovers (window curtain air bags and ETDs).

RNever wear the shoulder belt under your

arm, across your neck or off your shoulder. In a frontal crash, your body would move too far forward. That would increase the chance of head and neck injuries. The seat belt would also apply too much force to the ribs or abdomen, which could severely injure internal organs such as your liver or spleen. Adjust the seat belt so that the shoulder section is located as close as possible to the middle of the shoulder. It should not touch the neck. Never pass the shoulder portion of the seat belt under your arm. For this purpose, you can adjust the height of the seat belt outlet.

RPosition the lap belt as low as possible on your hips and not across the abdomen. If the lap belt is positioned across your abdomen, it could cause serious injuries in a crash.

RNever wear seat belts over rigid or

breakable objects in or on your clothing, such as eyeglasses, pens, keys etc., as these might cause injuries.

RMake sure the seat belt is always fitted snugly. Take special care of this when wearing loose clothing.

RNever use a seat belt for more than one

person at a time. Do not fasten a seat belt around a person and another person or other objects at the same time.

RSeat belts should not be worn twisted. In a crash, you would not have the full width of the seat belt to distribute impact forces. The twisted seat belt against your body could cause injuries.

RPregnant women should also always use a

lap-shoulder belt. The lap belt portion should be positioned as low as possible on the hips to avoid any possible pressure on the abdomen.

RPlace the seat backrest in a position that is

as upright as possible.

RCheck your seat belt during travel to make

sure it is properly positioned.

RNever place your feet on the instrument panel, dashboard, or on the seat. Always keep both feet on the floor in front of the seat.

RWhen using a seat belt to secure infant

restraints, toddler restraints, or children in booster seats, always follow the child seat manufacturer's instructions.

Fastening seat belts G WARNING According to accident statistics, children are safer when properly restrained on the rear seats than on the front-passenger seat. Thus, we strongly recommend that children be

placed in the rear seat whenever possible. Regardless of seating position, children 12
years old and under must be seated and properly secured in an appropriately sized child restraint system or booster seat recommended for the size and weight of the child. For additional information, see the "Children in the vehicle" section. A child's risk of serious or fatal injuries is significantly increased if the child restraints are not properly secured in the vehicle and/ or the child is not properly secured in the child restraint.

Occupant safety

57

X If necessary, adjust the seat belt to the

appropriate height (Y page 58).

X If necessary, pull upwards on the shoulder section of the seat belt to tighten the belt across your body.

All seat belts except the driver's seat belt are equipped with a special seat belt retractor to securely fasten child restraint systems in the vehicle. Further information can be found under "Special seat belt retractor" (Y page 63). For more information about releasing the seat belt with release button ?, see "Releasing seat belts" (Y page 58).

Seat belt adjustment The seat-belt adjustment function adjusts the driver's and front-passenger seat belt to the upper body of the occupants. The belt strap is tightened slightly when: Ryou engage the belt tongue in the belt

buckle and you then turn the SmartKey to position 2 in the ignition lock.

Rthe SmartKey is in position 2 in the ignition lock and you then engage the belt tongue in the buckle.

X Adjust the seat and move the backrest to

an almost vertical position (Y page 98). X Pull the seat belt smoothly through belt

sash guide :.

X Without twisting it, guide the shoulder

section of the seat belt across the middle of your shoulder and the lap section across your pelvis.

X Engage belt tongue ; in buckle =.

Seat-belt adjustment: if necessary, the driver's and front-passenger seat belts automatically adjust to the upper body (Y page 57).

The seat-belt adjustment will apply a retraction force if any slack is detected between the occupant and the seat belt. Do not hold on to the seat belt tightly while it is adjusting. You can switch the seat-belt adjustment on and off in the on-board computer (Y page 233). The seat-belt adjustment is an integral part of the PRE-SAFE® convenience function. More information about PRE-SAFE® can be found under "PRE-SAFE® (preventative occupant protection)" (Y page 54).

58 Occupant safety

Belt height adjustment

You can adjust the seat belt height on the front seats. Adjust the belt to a height that allows the upper part of the seat belt to be routed across the center of your shoulder. X To raise: slide the belt sash guide upwards.

The belt sash guide engages in various positions.

X To lower: press and hold belt sash guide

release :.

X Slide the belt sash guide downwards. X Release belt sash guide release : and make sure that the belt sash guide has engaged.

Releasing seat belts ! Make sure that the seat belt is fully rolled up. Otherwise, the seat belt or belt tongue will be trapped in the door or in the seat mechanism. This could damage the door, the door trim panel and the seat belt. Damaged seat belts can no longer fulfill their protective function and must be replaced. Visit a qualified specialist workshop.

X Press release button ? on belt buckle =. X Guide belt tongue ; to belt sash

guide :.

Belt warning for the driver and front passenger Regardless of whether the driver's and front- passenger seat belts have already been fastened, the 7 seat belt warning lamp lights up for six seconds each time the engine is started. It then goes out if the driver and the front passenger have already fastened their seat belts. If the driver's seat belt is not fastened when the engine is started, an additional warning tone will sound. This warning tone stops after a maximum of six seconds or once the driver's seat belt is fastened. If after six seconds, the driver or front passenger have not fastened their seat belts and the doors are closed: Rthe 7 seat belt warning lamp remains lit as long as the driver's or front-passenger's seat belt is not fastened and

Rif a vehicle speed of 15 mph (25 km/h) is exceeded, the 7 seat belt warning lamp begins to flash. A warning tone also sounds with increasing intensity for a maximum of

60 seconds or until the driver or front passenger have fastened their seat belts. If the driver/front passenger unfasten their seat belt while the vehicle is in motion, the 7 seat belt warning lamp lights up and a warning tone sounds again. The warning tone ceases even if the driver or front-passenger seat belt has still not been fastened after 60 seconds. The 7 seat belt warning lamp stops flashing but remains illuminated. After the vehicle comes to a standstill, the warning tone is reactivated and the seat belt warning lamp 7 flashes again if the vehicle speed again exceeds 15 mph (25 km/h). The 7 seat belt warning lamp only goes out if: Rboth the driver and the front passenger

have fastened their seat belts. or

Rthe vehicle is stationary and a door is open. i For more information on the 7 seat

belt warning lamp, see "Warning and indicator lamps in the instrument cluster, seat belts" (Y page 265).

Emergency Tensioning Devices, seat belt force limiters G WARNING Pyrotechnic Emergency Tensioning Devices that have been deployed are no longer operational and are unable to perform their intended protective function. This poses an increased risk of injury or even fatal injury. Therefore, have pyrotechnic Emergency Tensioning Devices which have been triggered immediately replaced at a qualified specialist workshop.

! If the front-passenger seat is not

occupied, do not engage the seat belt tongue in the buckle on the front- passenger seat. Otherwise, the Emergency

Occupant safety

59

Tensioning Device could be triggered in the event of an accident.

i Vehicles with PRE-SAFE®: Emergency

Tensioning Devices that are triggered by an electric motor can be deployed as often as desired and do not need to be replaced.

The front seat belts and the outer seat belts in the rear are equipped with Emergency Tensioning Devices and seat belt force limiters. The ETDs tighten the seat belts in an accident, pulling them close against the body. The ETDs do not correct incorrect seat positions or incorrectly fastened seat belts. The ETDs do not pull vehicle occupants back towards the backrest. The ETDs can only be activated when: Rthe ignition is switched on Rthe restraint systems are operational; see

"SRS warning lamp 6" (Y page 41)

Rthe belt tongue is engaged in the buckle on

each of the front seat belts.

The ETDs on the outside seats in the rear compartment are triggered independently of the lock status of the seat belts. The ETDs are triggered depending on the type and severity of an accident: Rif, in the event of a head-on or rear-end

collision, the vehicle decelerates or accelerates rapidly in a longitudinal direction during the initial stages of the impact

Rif, in the event of a side impact, on the side

opposite the impact the vehicle decelerates or accelerates rapidly in a lateral direction

Rif, in certain situations where the vehicle rolls over, the system determines that it can provide additional protection

If the ETDs are deployed, you will hear a bang, and a small amount of powder may also be released. Only in rare cases will the bang affect your hearing. The powder that is released generally does not constitute a

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Children in the vehicle

health hazard and does not indicate that there is a fire in the vehicle. The dust might cause some temporary breathing difficulty for people with asthma or other breathing trouble. To avoid this, you may wish to get out of the vehicle as soon as it is safe to do so. You can also open the window to allow fresh air to enter the vehicle interior. The 6 SRS warning lamp lights up. If the seat belt is also equipped with a seat belt force limiter and this is triggered, the force exerted by the seat belt on the vehicle occupant is reduced. The seat belt force limiters for the front seats are synchronized with the front air bags, which take on a part of the deceleration force. This results in the force exerted on the occupant being distributed over a greater area.

Children in the vehicle Child restraint systems Important safety notes G WARNING According to accident statistics, children are safer when properly restrained in the rear seating positions than in the front seating position. Thus, we strongly recommend that children be placed in the rear seats whenever possible. Regardless of seating position, children 12 years old and under must be seated and properly secured in an appropriate infant restraint, toddler restraint, or booster seat recommended for the size and weight of the child. The infant or child restraint must be properly secured with the vehicle's seat belt, the seat belt and top tether strap, or lower anchors and top tether strap, fully in accordance with the child seat manufacturer's instructions. Occupants, especially children, should always sit as upright as possible, wear the seat belt properly and use an appropriately sized infant restraint, toddler restraint, or booster seat

recommended for the size and weight of the child. Children can be killed or seriously injured by an inflating air bag. Note the following important information when circumstances require you to place a child in the front passenger seat: RYour vehicle is equipped with air bag

technology designed to deactivate the front passenger front air bag in your vehicle when the system senses the weight of a typical 12-month-old child or less along with the weight of a standard appropriate child restraint on the front passenger seat.

RFor children larger than the typical

12-month-old child, the front passenger front air bag may or may not be activated. Always make sure the 4 5 indicator lamp is illuminated, indicating that the front passenger front air bag is deactivated.

RA child in a rear-facing child restraint on the

front passenger seat will be seriously injured or even killed if the front passenger front air bag inflates in a collision which could occur under some circumstances, even with the air bag technology installed in your vehicle. The only means to completely eliminate this risk is to never place a child in a rear-facing child restraint in the front seat. We therefore strongly recommend that you always place a child in a rear-facing child restraint in a backseat.

RIf you must install a rear-facing child restraint on the front passenger seat because circumstances require you to do so, make sure the 4 5 indicator lamp is illuminated, indicating that the front passenger front air bag is deactivated. Should the 4 5 indicator lamp not illuminate or go out while the restraint is installed, please check installation. Periodically check the 4 5 indicator lamp while driving to make sure the 4
5 indicator lamp is illuminated. If the 4 5 indicator lamp goes out or remains out, do not transport a child on the

front passenger seat until the system has been repaired. A child in a rear-facing child restraint on the front passenger seat will be seriously injured or even killed if the front passenger front air bag inflates.

RIf you have to place a child in a forward-

facing child restraint on the front passenger seat, move the seat as far back as possible, use the proper child restraint recommended for the age, size and weight of the child, and secure child restraint with the vehicle's seat belt according to the child seat manufacturer's instructions. G WARNING If the child restraint system is installed incorrectly on a suitable seat, it cannot protect as intended. The child cannot then be restrained in the event of an accident, heavy braking or sudden changes of direction. There is an increased risk of injury, possibly even fatal. Make sure that you observe the child restraint system manufacturer's installation instructions and the notes on use. Please ensure, that the base of the child restraint system is always resting completely on the seat cushion. Never place objects, e.g. cushions, under or behind the child restraint system. Only use child restraint systems with the original cover designed for them. Only replace damaged covers with genuine covers. G WARNING If the child restraint system is installed incorrectly or is not secured, it can come loose in the event of an accident, heavy braking or a sudden change in direction. The child restraint system could be thrown about, striking vehicle occupants. There is an increased risk of injury, possibly even fatal. Always install child restraint systems properly, even if they are not being used. Make sure that you observe the child restraint

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61

system manufacturer's installation instructions. G WARNING Child restraint systems or their securing systems which have been damaged or subjected to a load in an accident can no longer protect as intended. The child cannot then be restrained in the event of an accident, heavy braking or sudden changes of direction. There is an increased risk of injury, possibly even fatal. Replace child restraint systems which have been damaged or subjected to a load in an accident as soon as possible. Have the securing systems on the child restraint system checked at a qualified specialist workshop, before you install a child restraint system again. G WARNING Infants and small children should never share a seat belt with another occupant. In the event of an accident, they could be crushed between the occupant and seat belt. A child's risk of serious or fatal injuries is significantly increased if the child restraints are not properly secured in the vehicle and/ or the child is not properly secured in the child restraint. Children that are too large for a child restraint must travel in seats using normal seat belts. Position the shoulder belt across the chest and shoulder, not the face or neck. A booster seat may be necessary to achieve proper seat belt positioning for children over 41 lbs (18 kg) until they reach a height where a lap/ shoulder belt fits properly without a booster seat. When the child restraint is not in use, remove it from the vehicle or secure it with the seat belt to prevent the child restraint from becoming a projectile in the event of an accident.

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Children in the vehicle

G WARNING If children are left unsupervised in the vehicle, they could: Ropen the doors, thus endangering other

people or road users.

Rget out and disrupt traffic. Roperate the vehicle's equipment. Additionally, children could set the vehicle in motion if, for example, they: Rrelease the parking brake. Rshifting the automatic transmission out of

park position P RStart the engine. There is a risk of an accident and injury. When leaving the vehicle, always take the SmartKey with you and lock the vehicle. Never leave children or animals unattended in the vehicle. Always keep the SmartKey out of reach of children. G WARNING If persons, particularly children are subjected to prolonged exposure to extreme heat or cold, there is a risk of injury, possibly even fatal. Never leave children unattended in the vehicle. G WARNING If the child restraint system is subjected to direct sunlight, parts may get very hot. Children may burn themselves on these parts, particularly on the metal parts of the child restraint system. There is a risk of injury. If you leave the vehicle, taking the child with you, always ensure that the child restraint system is not exposed to direct sunlight. Protect it with a blanket, for example. If the child restraint system has been exposed to direct sunlight, let it cool down before securing the child in it. Never leave children unattended in the vehicle.

If an infant or child is traveling in the vehicle: RSecure the child with a child or infant seat restraint system appropriate to the age and weight of the child.

RMake sure that the infant or child is

properly secured at all times while the vehicle is in motion.

Mercedes-Benz recommends that you always properly secure all infants and children with a child or infant seat restraint system for the trip. The use of seat belts and infant and child restraint systems is required by law in: Rall 50 states Rthe U.S. territories Rthe District of Columbia Rall Canadian provinces Infants and children must always be seated in an appropriate infant or child restraint system recommended for the size and weight of the child. The infant or child restraint system must be properly secured in accordance with the manufacturer's instructions. All infant or child restraint systems must meet the following standards: RU.S. Federal Motor Vehicle Safety

Standards 213 and 225

RCanadian Motor Vehicle Safety Standards

213 and 210.2

Confirmation that the child restraint system corresponds to the standards can be found on an instruction label on the child restraint system. This confirmation can also be found in the installation instructions that are included with the child restraint system. Always read and follow the manufacturer's instructions when using an infant or child restraint system or booster seat. Observe the warning labels in the vehicle interior or on the infant or child restraint.

Special seat belt retractor G WARNING If the seat belt is released while driving, the child restraint system will no longer be secured properly. The special seat belt retractor is disabled and the inertia real draws in a portion of the seat belt. The seat belt cannot be immediately refastened. There is an increased risk of injury, possibly even fatal. Stop the vehicle immediately, paying attention to road and traffic conditions. Reactivate the special seat belt retractor and secure the child restraint system properly.

All seat belts except the driver's seat belt are equipped with a special seat belt retractor. When activated, the special seat belt retractor ensures that the seat belt will not slacken once the child restraint system has been secured. Installing a child restraint system: X Always comply with the manufacturer's

installation instructions.

X Pull the seat belt smoothly from the seat

belt retractor.

X Engage the seat belt tongue in the belt

buckle.

Activating the special seat belt retractor: X Pull the seat belt out fully and let the seat

belt retractor retract it again. While the seat belt is retracting, you should hear a ratcheting sound. The special seat belt retractor is activated.

X Push down on the child restraint system to

take up any slack.

Removing a child restraint system/ deactivating the special seat belt retractor: X Always comply with the manufacturer's

installation instructions.

X Press the seat belt release button and guide the belt tongue to the belt outlet. The special seat belt retractor is deactivated.

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63

LATCH-type (ISOFIX) child seat anchors in the rear G WARNING LATCH-type (ISOFIX) child restraint systems do not offer sufficient protective effect for children whose weight is greater than 48 lbs (22 kg). The child could, for example, not be restrained correctly in the event of an accident. This poses an increased risk of injury or even fatal injury. If the child weighs more than 48 lbs (22 kg), also secure the LATCH-type (ISOFIX) child restraint system with the vehicle seat belt. Also secure the child restraint system with the Top Tether belt, if available.

When installing a child restraint system, be sure to observe the manufacturer's installation instructions and the instructions for correct use of the child restraint system.

Securing ring When installing the LATCH-type (ISOFIX) child restraint system, fold protective caps ; of securing rings : inwards. X Install the LATCH-type (ISOFIX) child seat

securing system. Comply with the manufacturer's instructions when installing.

The LATCH-type (ISOFIX) system is a standardized securing system for specially designed child restraint systems on the rear seats. Securing rings for two LATCH-type (ISOFIX) child restraint systems are installed on the left and right of the rear seats.

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Children in the vehicle

Secure child restraint systems without a LATCH-type (ISOFIX) child seat securing system using the seat belts in the vehicle. When installing child restraint systems, you must observe the manufacturer's installation instructions.

Top Tether Top Tether anchorages G WARNING Always lock the rear seat backrests in their upright position when the rear seats are occupied by passengers. Lock the rear seat backrests in their upright position before installing the Top Tether straps or when the cargo compartment is not in use. Make sure that rear seat backrests are secured properly by pushing and pulling on the seat backrests. If the seat backrest is not locked properly, the seat backrest could fold forward. The child restraint system is no longer supported properly or held in position and can no longer fulfill its function. This could cause serious or even fatal injuries.

Top Tether provides an additional connection between a child restraint system, secured with a LATCH-type (ISOFIX) child seat mount, and the rear seat. This helps reduce the risk of injury even further. The Top Tether anchorage points are located in the rear compartment behind the head restraints. X Move head restraint : upwards. X Fold up cover ; of Top Tether anchorage

=.

X Route Top Tether belt A under head

restraint : between the two head restraint bars.

X Hook Top Tether hook ? into Top Tether

anchorage =.

X Make sure that Top Tether belt A is not

twisted.

X Fold down cover ; of Top Tether

anchorage =.

X Slide down head restraint : until it

engages (Y page 101). Make sure that you do not interfere with the correct routing of Top Tether belt A. X Install the LATCH-type (ISOFIX) child

restraint system with Top Tether. Comply with the manufacturer's installation instructions when doing so. Make sure that Top Tether belt A is tight.

Child-proof locks Important safety notes G WARNING If children are left unsupervised in the vehicle, they could: Ropen the doors, thus endangering other

people or road users.

Rget out and disrupt traffic. Roperate the vehicle's equipment.

Additionally, children could set the vehicle in motion if, for example, they: Rrelease the parking brake. Rshifting the automatic transmission out of

park position P RStart the engine. There is a risk of an accident and injury. When leaving the vehicle, always take the SmartKey with you and lock the vehicle. Never leave children or animals unattended in the vehicle. Always keep the SmartKey out of reach of children. G WARNING If persons, particularly children are subjected to prolonged exposure to extreme heat or cold, there is a risk of injury, possibly even fatal. Never leave children unattended in the vehicle. G WARNING If children are traveling in the vehicle, they could: Ropen doors, thus endangering other people

or road users

Rexit the vehicle and be caught by oncoming

traffic

Roperate vehicle equipment and become

trapped

There is a risk of an accident and injury. Always activate the child-proof locks and override feature if children are traveling in the vehicle. When leaving the vehicle, always take the key with you and lock the vehicle. Never leave children unattended in the vehicle.

You can activate the following child-proof locks: Rrear doors (Y page 65) Rrear side windows (Y page 65)

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65

Child-proof locks for the rear doors G WARNING Children could open a rear door from inside the vehicle. This could result in serious injuries or an accident. Therefore, when children ride in the rear always secure the rear doors with the child-proof locks.

You secure each door individually with the child-proof locks on the rear doors. A door secured with a child-proof lock cannot be opened from inside the vehicle. When the vehicle is unlocked, the door can be opened from the outside. X To activate: press the child-proof lock

lever up in the direction of arrow :.

X Make sure that the child-proof locks are

working properly.

X To deactivate: press the child-proof lock lever down in the direction of arrow ;.

Override feature for the rear side windows G WARNING When children ride on the vehicle's rear seats, activate the override switch. Otherwise, the children could be injured, e.g. by trapping themselves in the rear side window.

66 Driving safety systems

X To activate/deactivate: press button ;. If indicator lamp : is lit, operation of the rear side windows is disabled. Operation is only possible using the switches in the driver's door. If indicator lamp : is off, operation is possible using the switches in the rear compartment.

Driving safety systems Overview of driving safety systems In this section, you will find information about the following driving safety systems: RABS (Anti-lock Braking System)

RBAS (Brake Assist System) (Y page 67) RBAS PLUS (Brake Assist System Plus)

RESP® (Electronic Stability Program)

REBD (Electronic Brake force Distribution)

(Y page 66)

(Y page 67)

(Y page 68)

(Y page 71)

RADAPTIVE BRAKE (Y page 72) RPRE-SAFE® Brake (Y page 72)

Important safety notes If you fail to adapt your driving style or become distracted, the driving safety systems can neither reduce the risk of accident nor override the laws of physics. Driving safety systems are merely aids designed to assist driving. You are

responsible for the distance to the vehicle in front, for vehicle speed and for braking in good time. Always adapt your driving style to suit the prevailing road, weather and traffic conditions and maintain a safe distance from the vehicle in front. Drive carefully. i The driving safety systems described only work as effectively as possible when there is adequate contact between the tires and the road surface. Please pay special attention to the notes on tires, recommended minimum tire tread depths, etc. (Y page 334). In wintry driving conditions, always use winter tires (M+S tires) and if necessary, snow chains. Only in this way will the driving safety systems described in this section work as effectively as possible.

ABS (Anti-lock Braking System) Important safety notes i Observe the "Important safety notes"

section (Y page 66). G WARNING If ABS is faulty, the wheels could lock when braking. The steerability and braking characteristics may be severely impaired. Additionally, further driving safety systems are deactivated. There is an increased danger of skidding and accidents. Drive on carefully. Have ABS checked immediately at a qualified specialist workshop.

When ABS is malfunctioning, other systems, including driving safety systems, will also become inoperative. Observe the information on the ABS warning lamp (Y page 267) and display messages which may be shown in the instrument cluster (Y page 238). ABS regulates brake pressure in such a way that the wheels do not lock when you brake. This allows you to continue steering the vehicle when braking.

ABS works from a speed of about 5 mph (8 km/h) upwards, regardless of road-surface conditions. ABS works on slippery surfaces, even if you only brake gently. The yellow ! ABS warning lamp in the instrument cluster lights up when the ignition is switched on. It goes out when the engine is running.

Braking X If ABS intervenes: continue to depress the

brake pedal vigorously until the braking situation is over.

X To make a full brake application:

depress the brake pedal with full force.

If ABS intervenes when braking, you will feel a pulsing in the brake pedal. The pulsating brake pedal can be an indication of hazardous road conditions, and functions as a reminder to take extra care while driving.

BAS (Brake Assist System) i Observe the "Important safety notes"

section (Y page 66). G WARNING If BAS is malfunctioning, the braking distance in an emergency braking situation is increased. There is a risk of an accident. In an emergency braking situation, depress the brake pedal with full force. ABS prevents the wheels from locking.

BAS operates in emergency braking situations. If you depress the brake pedal quickly, BAS automatically boosts the braking force, thus shortening the stopping distance. The brakes will function as usual once you release the brake pedal. BAS is deactivated.

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67

BAS PLUS (Brake Assist System PLUS) General information i Observe the "Important safety notes"

section (Y page 66).

BAS PLUS is only available in vehicles equipped with DISTRONIC PLUS. For BAS PLUS to assist you when driving, the radar sensor system must be: Ractivated (Y page 232) Roperational With the help of the radar sensor system, BAS PLUS can detect obstacles that are in the path of your vehicle for an extended period of time. If the radar sensor system is malfunctioning, BAS PLUS will not be available. The brake system is still available with complete brake boosting effect and BAS. BAS PLUS provides braking assistance in hazardous situations at speeds greater than 4 mph (7 km/h). At speeds of up to approximately 40 mph (70 km/h), BAS PLUS can also react to stationary objects. Examples of stationary objects are stopped or parked vehicles.

Important safety notes G WARNING BAS PLUS cannot always clearly identify objects and complex traffic situations. BAS PLUS cannot intervene in these cases. There is a risk of an accident. Always pay careful attention to the traffic situation and be ready to brake. G WARNING BAS PLUS does not react: Rto people or animals Rto oncoming vehicles Rto crossing traffic Rwhen cornering

68 Driving safety systems

As a result, BAS PLUS may not intervene in all critical situations. There is a risk of an accident. Always pay careful attention to the traffic situation and be ready to brake.

In particular, the detection of obstacles can be impaired if there is: Rdirt on the sensors or anything else

covering the sensors

Rsnow or heavy rain Rinterference by other radar sources Rthere are strong radar reflections, for

example in parking garages

Ra narrow vehicle traveling in front, e.g. a

motorbike

Ra vehicle traveling in front on a different line

relative to the center of your vehicle

Following damage to the front end of the vehicle, have the configuration and operation of the radar sensors checked at a qualified specialist workshop. This also applies to collisions at low speeds where there is no visible damage to the front of the vehicle.

Braking assistance To prevent a collision with the vehicle in front, BAS PLUS calculates the brake force necessary if: Ryou approach an obstacle, and RBAS PLUS has detected a risk of collision When driving at a speed under 20 mph (30 km/h): if you depress the brake pedal, BAS PLUS is activated. The increase in brake pressure will be carried out at the last possible moment. When driving at a speed greater than 20 mph (30 km/h): if you depress the brake pedal sharply, BAS PLUS automatically raises the brake pressure to a value adapted to the traffic situation. If BAS PLUS demands particularly high braking force, preventative passenger

protection measures (PRE-SAFE®) are activated simultaneously. X Keep the brake pedal depressed until the

emergency braking situation is over. ABS prevents the wheels from locking. BAS PLUS is deactivated and the brakes function as usual if: Ryou release the brake pedal Rthere is no longer a risk of collision Rno obstacle is detected in front of your

vehicle

ESP® (Electronic Stability Program) Important safety notes i Observe the "Important safety notes"

section (Y page 66). G WARNING If ESP® is malfunctioning, ESP® is unable to stabilize the vehicle. Additionally, further driving safety systems are deactivated. This increases the risk of skidding and an accident. Drive on carefully. Have ESP® checked at a qualified specialist workshop.

! Vehicles with 4MATIC: switch off the

ignition when the parking brake is being tested on a brake dynamometer. Application of the brakes by ESP® may otherwise destroy the brake system.

Vehicles without 4MATIC: observe the notes on ESP®(Y page 330) when towing the vehicle with a raised rear axle. ESP® is deactivated if the å warning lamp in the instrument cluster lights up continuously when the engine is running. If the ÷ warning lamp and the å warning lamp are lit continuously, ESP® is not available due to a malfunction. Observe the information on warning lamps (Y page 269) and display messages which may be shown in the instrument cluster (Y page 238).

If ESP® detects that the vehicle is deviating from the direction desired by the driver, one or more wheels are braked to stabilize the vehicle. The engine output is also modified to keep the vehicle on the desired course within physical limits. ESP® assists the driver when pulling away on wet or slippery roads. ESP® can also stabilize the vehicle during braking. If ESP® intervenes, the ÷ ESP® warning lamp flashes in the instrument cluster. If ESP® intervenes: X Do not deactivate ESP® under any

circumstances.

X Only depress the accelerator pedal as far

as necessary when pulling away.

X Adapt your driving style to suit the

prevailing road and weather conditions.

i Only use wheels with the recommended

tire sizes. Only then will ESP® function properly.

ETS/4ETS (Electronic Traction System) ETS/4ETS traction control is part of ESP®. Traction control brakes the drive wheels individually if they spin. This enables you to pull away and accelerate on slippery surfaces, for example if the road surface is slippery on one side. In addition, more drive torque is transferred to the wheel or wheels with traction. Traction control remains active, even if you deactivate ESP®.

Deactivating/activating ESP® (except AMG vehicles) G WARNING If you deactivate ESP®, ESP® no longer stabilizes the vehicle. There is an increased risk of skidding and an accident. Only deactivate ESP® in the situations described in the following.

Driving safety systems

69

! Avoid spinning the driven wheels for an extended period with ESP® deactivated. You could otherwise damage the drivetrain.

X To deactivate:(Y page 227).

The å ESP® OFF warning lamp in the instrument cluster lights up. X To activate: (Y page 227).

The å ESP® OFF warning lamp in the instrument cluster goes out.

ESP® is activated automatically when the engine is started. The ECO start/stop function switches the engine off automatically when the vehicle stops moving. The engine starts automatically when the driver wants to pull away again. ESP® remains in its previously selected status. Example: if ESP® was deactivated before the engine was switched off, ESP® remains deactivated when the engine is switched on again. If ESP® is deactivated and one or more wheels start to spin, the ÷ ESP® warning lamp in the instrument cluster flashes. In such situations, ESP® will not stabilize the vehicle. It may be best to deactivate ESP® in the following situations: Rwhen using snow chains Rin deep snow Ron sand or gravel If you deactivate ESP®: RESP® no longer improves driving stability. Rtraction control is still activated. RESP® still provides support when you

brake.

Rengine torque is not limited and the drive

wheels are able to spin. The spinning wheels produce a cutting effect for better traction.

70 Driving safety systems

Deactivating/activating ESP® (AMG vehicles) Activating/deactivating SPORT handling mode G WARNING When SPORT handling mode is activated, there is a greater risk of skidding and accidents. Only activate SPORT handling mode in the situations described in the following.

X To activate: briefly press button :.

The M SPORT handling mode warning lamp in the instrument cluster lights up. The SPORT handling mode message appears in the multifunction display. SPORT handling mode is designed for driving on designated roads when the vehicle's own oversteering and understeering characteristics are desired. Driving in SPORT handling mode requires an extremely qualified and experienced driver who is able to cope with these critical driving conditions.

X To deactivate: briefly press button :. The M SPORT handling mode warning lamp in the instrument cluster goes out. ESP® is activated automatically when the engine is started.

It may be best to activate SPORT handling mode in the following situations: Rwhen using snow chains Rin deep snow Ron sand or gravel If SPORT handling mode is activated and one or more wheels start to spin, the ÷ ESP® warning lamp in the instrument cluster flashes. ESP® only stabilizes the vehicle to a limited degree. When SPORT handling mode is activated: RESP® only improves driving stability to a

limited degree.

Rtraction control is still activated. RESP® still provides support when you

brake.

Rengine torque is only restricted to a limited

degree, and the drive wheels are able to spin. The spinning wheels produce a cutting effect for better traction.

Vehicles with ECO start/stop function: the ECO start/stop function switches the engine off automatically when the vehicle comes to a stop. The engine starts automatically when the driver wants to pull away again. ESP® remains in its previously selected status. For example, if ESP® was deactivated before the engine was switched off, ESP® remains deactivated when the engine is switched on again. Deactivating/activating ESP® G WARNING If you deactivate ESP®, ESP® no longer stabilizes the vehicle. There is an increased risk of skidding and an accident. Only deactivate ESP® in the situations described in the following.

! Avoid spinning the driven wheels for an extended period with ESP® deactivated. You could otherwise damage the drivetrain.

Driving safety systems

71

RPRE-SAFE® is no longer available, nor is it

activated if you brake firmly and ESP® intervenes.

RPRE-SAFE® Brake is no longer available, it is also not activated if you brake firmly and ESP® intervenes.

RESP® still provides support when you

brake.

Rengine torque is no longer limited and the drive wheels are able to spin. The spinning wheels produce a cutting effect for better traction.

Vehicles with ECO start/stop function: the ECO start/stop function switches the engine off automatically when the vehicle comes to a stop. The engine starts automatically when the driver wants to pull away again. ESP® remains in its previously selected status. For example, if ESP® was deactivated before the engine was switched off, ESP® remains deactivated when the engine is switched on again.

EBD (electronic brake force distribution) i Observe the "Important safety notes"

section (Y page 66). G WARNING If EBD has malfunctioned, the rear wheels can still lock, e.g. under full braking. This increases the risk of skidding and an accident. You should therefore adapt your driving style to the different handling characteristics. Have the brake system checked at a qualified specialist workshop.

Observe information regarding indicator and warning lamps (Y page 267) as well as display messages (Y page 240). EBD monitors and controls the brake pressure on the rear wheels to improve driving stability while braking.

X To deactivate: press button : until the å ESP® OFF warning lamp lights up in the instrument cluster. The ÷OFF message appears in the multifunction display. Deactivate ESP® when driving on designated roads when the vehicle's own oversteering and understeering characteristics are desired. Driving without ESP® requires an extremely qualified and experienced driver who is able to cope with these critical driving conditions.

X To activate: briefly press button :. The å ESP® OFF warning lamp in the instrument cluster goes out. The ÷ON message appears in the multifunction display.

ESP® is activated automatically when the engine is started. If ESP® is deactivated and one or more wheels start to spin, the ÷ ESP® warning lamp in the instrument cluster does not flash. In such situations, ESP® will not stabilize the vehicle. It may be best to deactivate ESP® in the following situations: Rwhen using snow chains Rin deep snow Ron sand or gravel If you deactivate ESP®: RESP® no longer improves driving stability. Rtraction control is still activated.

72 Driving safety systems

ADAPTIVE BRAKE ADAPTIVE BRAKE enhances braking safety and offers increased braking comfort. In addition to the braking function, ADAPTIVE BRAKE also has the HOLD function (Y page 186) and hill start assist (Y page 150).

PRE-SAFE® Brake General information i Observe the "Important safety notes"

section (Y page 66).

PRE-SAFE® Brake is only available in vehicles with DISTRONIC PLUS. If PRE-SAFE® Brake is to aid you, the radar sensor system must be: Ractivated (Y page 232) Roperational With the help of the radar sensor system, PRE-SAFE® Brake can detect obstacles that are in front of your vehicle for an extended period of time. PRE-SAFE® Brake can help you to minimize the risk of a collision with a vehicle ahead or reduce the effects of such a collision. If PRE- SAFE® Brake has detected a risk of collision, you will be warned visually and acoustically as well as by automatic braking. PRE-SAFE® Brake cannot prevent a collision without your intervention. At speeds of up to approximately 40 mph (70 km/h) PRE-SAFE® Brake can also detect stationary objects. Examples of stationary objects are stopped or parked vehicles.

Important safety notes G WARNING PRE-SAFE® Brake will initially brake your vehicle by a partial application of the brakes if a danger of collision is detected. There may be a collision unless you also brake.

Automatic emergency braking cannot prevent a collision. There is a risk of an accident. Always apply the brakes yourself and try to take evasive action. G WARNING PRE-SAFE® Brake cannot always clearly identify objects and complex traffic conditions. In these cases, PRE-SAFE® Brake may: Rgive an unnecessary warning and then

brake the vehicle

Rnot give a warning or intervene There is a risk of an accident. Always pay particular attention to the traffic situation and be ready to brake, especially if PRE-SAFE® Brake warns you. Terminate the intervention in a non-critical driving situation.

In particular, the detection of obstacles can be impaired if there is: Rdirt on the sensors or anything else

covering the sensors

Rsnow or heavy rain Rinterference by other radar sources Rthere are strong radar reflections, for

example in parking garages

Ra narrow vehicle traveling in front, e.g. a

motorbike

Ra vehicle traveling in front on a different line

relative to the center of your vehicle G WARNING PRE-SAFE® Brake does not react: Rto people or animals Rto oncoming vehicles Rto crossing traffic Rwhen cornering As a result, PRE-SAFE® Brake may neither give warnings nor intervene in all critical situations. There is a risk of an accident. Always pay careful attention to the traffic situation and be ready to brake.

In order to maintain the appropriate distance to the vehicle in front and thus prevent a collision, you must apply the brakes yourself. Due to the nature of the system, particularly complicated driving conditions may cause unnecessary warnings or the unnecessary intervention of PRE-SAFE® Brake. Following damage to the front end of the vehicle, have the configuration and operation of the radar sensors checked at a qualified specialist workshop. This also applies to collisions at low speeds where there is no visible damage to the front of the vehicle.

Function X To activate/deactivate: activate or

deactivate PRE-SAFE® Brake in the on- board computer (Y page 228). If the PRE-SAFE® Brake is not activated, the æ symbol appears in the multifunction display.

If you approach a vehicle in front very quickly, this function warns you from a speed of approximately 4 mph (7 km/h). An intermittent warning tone sounds and the · distance warning signal lamp in the instrument cluster lights up. X Brake immediately to defuse the situation. or X Take evasive action provided it is safe to do

so.

From a speed of approximately 4 mph (7 km/h), if the driver and front passenger have fastened their seat belts, PRE-SAFE® Brake can brake the vehicle automatically at speeds up to approximately 124 mph (200 km/h). You can prevent the intervention of the PRE- SAFE® Brake at any time by: Rdepressing the accelerator pedal further. Ractivating kickdown. Rreleasing the brake pedal.

Theft deterrent locking system 73

The braking action of PRE-SAFE® Brake is ended automatically if: Ryou maneuver to avoid the obstacle. Rthere is no longer any danger of a rear-end

collision.

Rthere is no longer an obstacle detected in

front of your vehicle.

If you approach an obstacle and PRE-SAFE® Brake detects a risk of a collision, the system will alert you both visually and acoustically. If you do not brake or take evasive action, the system will warn you by automatically braking the vehicle gently. If there is an increased risk of collision, preventative passenger protection measures (PRE-SAFE®) are activated (Y page 54). If a risk of collision remains at speeds of over 20 mph (30 km/h) and you do not brake, take evasive action or significantly accelerate, automatic braking may be performed up to and including emergency braking. Automatic emergency braking is not performed until immediately prior to an accident that can no longer be avoided.

Theft deterrent locking system Immobilizer The immobilizer prevents your vehicle from being started without the correct SmartKey. X To activate with the SmartKey: remove

the SmartKey from the ignition lock.

X To activate with KEYLESS-GO: switch the

ignition off and open the driver's door. X To deactivate: switch on the ignition. When leaving the vehicle, always take the SmartKey with you and lock the vehicle. Anyone can start the engine if a valid SmartKey has been left inside the vehicle. i The immobilizer is always deactivated

when you start the engine. In the event that the engine cannot be started when the starter battery is fully charged, the immobilizer may be faulty.

74

Theft deterrent locking system

Contact an authorized Mercedes-Benz Center or call 1-800-FOR-MERCedes (in the USA) or 1-800-387-0100 (in Canada).

ATA (anti-theft alarm system)

X To stop the alarm using KEYLESS-GO:

grasp the outside door handle. The SmartKey must be outside the vehicle. The alarm is switched off.

or X Press the Start/Stop button on the

dashboard. The SmartKey must be inside the vehicle. The alarm is switched off.

The alarm is not switched off, even if you close the open door that triggered it, for example. i If the alarm stays on for more than

30 seconds, the mbrace emergency call system automatically sends a message to the Customer Assistance Center by text message or data connection. The emergency call system sends the message provided that: Ryou have subscribed to the mbrace

service

Rthe mbrace service has been activated

properly

Rthe necessary mobile phone network is

available

X To arm: lock the vehicle with the SmartKey

or KEYLESS-GO. Indicator lamp : flashes. The alarm system is armed after approximately 15 seconds.

X To disarm: unlock the vehicle with the

SmartKey or KEYLESS-GO.

A visual and audible alarm is triggered if the alarm system is armed and you open: Ra door Rthe vehicle with the mechanical key Rthe trunk lid Rthe hood X To turn the alarm off with the

SmartKey: press the % or & button on the SmartKey. The alarm is switched off.

or X Insert the SmartKey into the ignition lock.

The alarm is switched off.

75

Useful information .............................. 76
SmartKey ............................................. 76
Doors .................................................... 82
Trunk .................................................... 84
Side windows ...................................... 88
Sliding sunroof .................................... 92

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SmartKey

Useful information

i This Operator's Manual describes all models and all standard and optional equipment of your vehicle available at the time of publication of the Operator's Manual. Country-specific differences are possible. Please note that your vehicle may not be equipped with all features described. This also applies to safety- related systems and functions.

i Read the information on qualified specialist workshops: (Y page 26).

SmartKey Important safety notes G WARNING If children are left unsupervised in the vehicle, they could: Ropen the doors, thus endangering other

people or road users.

Rget out and disrupt traffic. Roperate the vehicle's equipment. Additionally, children could set the vehicle in motion if, for example, they: Rrelease the parking brake. Rshifting the automatic transmission out of

park position P RStart the engine. There is a risk of an accident and injury. When leaving the vehicle, always take the SmartKey with you and lock the vehicle. Never leave children or animals unattended in the vehicle. Always keep the SmartKey out of reach of children. G WARNING If persons, particularly children are subjected to prolonged exposure to extreme heat or cold, there is a risk of injury, possibly even fatal. Never leave children unattended in the vehicle.

G WARNING If you attach heavy or large objects to the SmartKey, the SmartKey could be unintentionally turned in the ignition lock. This could cause the engine to be switched off. There is a risk of an accident. Do not attach any heavy or large objects to the SmartKey. Remove any bulky key rings before inserting the SmartKey into the ignition lock.

! Keep the SmartKey away from strong magnetic fields. Otherwise, the remote control function could be affected. Strong magnetic fields can occur in the vicinity of powerful electrical installations.

RDo not keep the SmartKey:

- with electronic devices, e.g. a mobile

phone or another SmartKey

- with metallic objects, e.g. coins or metal

foil inside metallic objects, e.g. a metal case

This can affect the functionality of the SmartKey.

SmartKey functions

: & To lock the vehicle ; F To unlock the trunk lid = % To unlock the vehicle X To unlock centrally: press the %

button.

If you do not open the vehicle within approximately 40 seconds of unlocking: Rthe vehicle is locked again. Rthe theft deterrent locking system is

armed again.

X To lock centrally: press the & button. The SmartKey centrally locks/unlocks: Rthe doors Rthe trunk lid Rthe fuel filler flap The turn signals flash once when unlocking and three times when locking. You can also set an audible signal to confirm that the vehicle has been locked. The audible signal can be activated and deactivated using the on-board computer (Y page 232). When it is dark, the surround lighting also comes on if it is activated in the on-board computer (Y page 231).

KEYLESS-GO General notes Bear in mind that the engine can be started by any of the vehicle occupants if there is a KEYLESS-GO key in the vehicle.

Locking/unlocking centrally You can start, lock or unlock the vehicle using KEYLESS-GO. To do this, you only need carry the SmartKey with you. You can combine the functions of KEYLESS-GO with those of a conventional SmartKey. Unlock the vehicle by using KEYLESS-GO, for instance, and lock it using the & button on the SmartKey. When locking or unlocking with KEYLESS-GO, the distance between the SmartKey and the corresponding door handle must not be greater than 3 ft (1 m).

SmartKey

77

KEYLESS-GO checks whether a valid SmartKey is in the vehicle by periodically establishing a radio connection between the vehicle and the SmartKey. This happens: Rwhen the external door handles are

touched

Rwhen starting the engine Rwhile the vehicle is in motion

X To unlock the vehicle: touch the inner

surface of the door handle.

X To lock the vehicle: touch sensor

surface :.

X Convenience closing feature: touch

recessed sensor surface ; for an extended period.

X To unlock the trunk lid: pull the handle on

the trunk lid.

Further information on the convenience closing feature (Y page 90).

Changing the settings of the locking system You can change the settings of the locking system. This means that only the driver's door and the fuel filler flap are unlocked when the vehicle is unlocked. This is useful if you frequently travel on your own. X To change the setting: press and hold down the % and & buttons on the SmartKey simultaneously for

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SmartKey

approximately six seconds until the battery check lamp flashes twice (Y page 79). i If the setting of the locking system is changed within the signal range of the vehicle, pressing the & or % button: Rlocks or Runlocks the vehicle

The SmartKey now functions as follows: X To unlock the driver's door: press the

% button once.

X To unlock centrally: press the %

button twice.

X To lock centrally: press the & button. The KEYLESS-GO function is changed as follows: X To unlock the driver's door: touch the inner surface of the door handle on the driver's door.

X To unlock centrally: touch the inner

surface of the door handle on the front- passenger door or the rear door.

X To lock centrally: touch the outer sensor

surface on one of the door handles.

X To restore the factory settings: press

and hold down the % and & buttons simultaneously for approximately six seconds until the battery check lamp flashes twice (Y page 79).

Mechanical key General notes If the vehicle can no longer be locked or unlocked with the SmartKey, use the mechanical key. If you use the mechanical key to unlock and open the driver's door or the trunk lid, the anti-theft alarm system will be triggered (Y page 74).

There are several ways to turn off the alarm: X To turn the alarm off with the

SmartKey: press the % or & button on the SmartKey.

or X Insert the SmartKey into the ignition lock. or X To deactivate the alarm with KEYLESS-

GO: press the Start/Stop button in the ignition lock. The SmartKey must be in the vehicle.

or X Lock or unlock the vehicle using KEYLESS-

GO. The SmartKey must be outside the vehicle.

If you unlock the vehicle using the mechanical key, the fuel filler flap will not be unlocked automatically. X To unlock the fuel filler flap: insert the

SmartKey into the ignition lock.

Removing the mechanical key

: Release catch ; Mechanical key X Push release catch : in the direction of the arrow and at the same time remove mechanical key ; from the SmartKey.

SmartKey battery Important safety notes G WARNING Batteries contain toxic and corrosive substances. If batteries are swallowed, it can result in severe health problems. There is a risk of fatal injury. Keep batteries out of the reach of children. If a battery is swallowed, seek medical attention immediately.

Mercedes-Benz recommends that you have the batteries replaced at a qualified specialist workshop.

Checking the battery

X Press the & or % button.

The battery is working properly if battery check lamp : lights up briefly. The battery is discharged if battery check lamp : does not light up briefly. X Change the battery (Y page 79). i If the SmartKey battery is checked within the signal reception range of the vehicle, pressing the & or % button: Rlocks or Runlocks the vehicle

i You can get a battery at any qualified

specialist workshop.

SmartKey

79

Replacing the battery You require a CR 2025 3 V cell battery. X Take the mechanical key out of the

SmartKey (Y page 78).

: Battery compartment cover ; Mechanical key X Press mechanical key ; into the opening

in the SmartKey in the direction of the arrow until battery compartment cover : opens. Do not hold battery compartment cover : closed while doing so.

X Remove battery compartment cover :.

= Battery X Repeatedly tap the SmartKey against your

palm until battery = falls out.

X Insert the new battery with the positive terminal facing upwards. Use a lint-free cloth to do so.

X Make sure that the surface of the battery is free of lint, grease and other contaminants.

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SmartKey

X Insert the front tabs of battery

compartment cover : into the housing first and then press to close it.

X Insert mechanical key ; into the

SmartKey (Y page 78).

X Check the function of all SmartKey buttons

on the vehicle.

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81

Problems with the SmartKey Problem You cannot lock or unlock the vehicle using the SmartKey.

Possible causes/consequences and M Solutions The SmartKey battery is discharged or nearly discharged. X Try again to lock/unlock the vehicle using the remote control function of the SmartKey. Point the tip of the SmartKey at the driver's door handle from close range and press the % or & button.

If this does not work: X Check the SmartKey battery (Y page 79) and replace it if

necessary (Y page 79).

the mechanical key.

X Lock (Y page 84) or unlock (Y page 84) the vehicle using

The SmartKey is faulty. X Lock (Y page 84) or unlock (Y page 84) the vehicle using

the mechanical key.

X Have the SmartKey checked at a qualified specialist workshop. There is interference from a powerful source of radio waves. X Lock/unlock the vehicle using the remote control function of the SmartKey. Point the tip of the SmartKey at the driver's door handle from close range and press the % or & button.

You can no longer lock or unlock the vehicle using KEYLESS-GO.

There is a malfunction with KEYLESS-GO. X Lock/unlock the vehicle using the remote control function of the SmartKey. Point the tip of the SmartKey at the driver's door handle from close range and press the % or & button. X Have KEYLESS-GO checked at a qualified specialist workshop. If this does not work: X Check the SmartKey battery (Y page 79) and replace it if