2013 Mercedes-benz C Class Owners Manual

necessary (Y page 79).

the mechanical key.

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

You have lost a SmartKey.

X Have the SmartKey deactivated at a qualified specialist

workshop.

You have lost the mechanical key.

X Report the loss immediately to the vehicle insurers. X If necessary, have the locks changed as well. X Report the loss immediately to the vehicle insurers. X If necessary, have the locks changed as well.

82 Doors

Problem The engine cannot be started using the SmartKey.

Possible causes/consequences and M Solutions The on-board voltage is too low. X Switch off non-essential consumers, e.g. seat heating or interior

lighting, and try to start the engine again.

The engine cannot be started using KEYLESS- GO. The SmartKey is in the vehicle.

If this does not work: X Check the starter battery and charge it if necessary

(Y page 324).

or X Jump-start the vehicle (Y page 326). or X Consult a qualified specialist workshop. A door is open. Therefore, the SmartKey cannot be detected as easily. X Close the door and try to start the vehicle again. There is interference from a powerful source of radio waves. X Start your vehicle with the SmartKey in the ignition lock.

Doors 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.

Unlocking and opening doors from the inside You can open a door from inside the vehicle even if it has been locked. If the vehicle has been locked with the SmartKey or with KEYLESS-GO, opening a door from the inside will trigger the anti-theft alarm system. Switch off the alarm (Y page 74). You can only open the rear doors from inside the vehicle if they are not secured by the child-proof locks (Y page 65).

Doors

83

You cannot unlock the vehicle centrally from the inside if the vehicle has been locked with the SmartKey or KEYLESS-GO. You can open a door from inside the vehicle even if it has been locked. You can only open the rear doors from inside the vehicle if they are not secured by the child-proof locks (Y page 65). If the vehicle has been locked using the locking button for the central locking, or has been locked automatically, and a door is opened from the inside: Rthe vehicle will be fully unlocked if it had

previously been fully unlocked

Ronly the door which has been opened form

the inside is unlocked if only the driver's door had been previously unlocked

Automatic locking feature

X To deactivate: press and hold button : for about five seconds until a tone sounds. X To activate: press and hold button ; for

about five seconds until a tone sounds. i If you press one of the two buttons and do not hear a tone, the relevant setting has already been selected.

The vehicle is locked automatically when the ignition is switched on and the wheels are turning.

X To unlock a front door: pull door

handle ;. Locking knob : pops up. The door is unlocked and can be opened.

X To open a front door: pull door

handle ;.

X To unlock a rear door: pull up locking

knob :. The door is unlocked and can be opened. X To open a rear door: pull door handle ;.

Centrally locking and unlocking the vehicle from the inside You can centrally lock or unlock the vehicle from the inside.

X To unlock: press button :. X To lock: press button ;.

If all the doors are closed, the vehicle locks.

Meanwhile, the fuel filler flap will not be locked or unlocked.

84

Trunk

You could therefore lock yourself out if: Rthe vehicle is being pushed. Rthe vehicle is being towed. Rthe vehicle is on a roller dynamometer. You can also switch the automatic locking function on and off using the on-board computer (Y page 232).

Unlocking the driver's door (mechanical key) If the vehicle can no longer be unlocked with the SmartKey, use the mechanical key. X Take the mechanical key out of the

SmartKey (Y page 78).

X Insert the mechanical key into the lock of

the driver's door as far as it will go.

X Open the driver's door. X Close the front-passenger door, the rear

doors and the trunk lid.

X Press the locking button (Y page 83). X Check whether the locking knobs on the front-passenger door and the rear doors are still visible. Press down the locking knobs manually, if necessary (Y page 82).

X Close the driver's door. X Take the mechanical key out of the

SmartKey (Y page 78).

X Insert the mechanical key into the lock of

the driver's door as far as it will go.

1 To lock X Turn the mechanical key clockwise as far

as it will go to position 1.

X Turn the mechanical key back and remove

it.

X Make sure that the doors and the trunk lid

are locked.

X Insert the mechanical key into the

SmartKey.

Trunk Important safety notes G WARNING Combustion engines emit poisonous exhaust gases such as carbon monoxide. Exhaust gases can enter the vehicle interior if the trunk lid is open when the engine is running,

1 To unlock X Turn the mechanical key counter-clockwise

to position 1. The door is unlocked.

X Turn the mechanical key back and remove

it.

X Insert the mechanical key into the

SmartKey.

If you use the mechanical key to unlock and open the driver's door, the anti-theft alarm system will be triggered (Y page 74).

Locking the vehicle (mechanical key) If the vehicle can no longer be locked with the SmartKey, use the mechanical key.

g

Trunk

85

Opening/closing from outside Opening

especially if the vehicle is in motion. There is a risk of poisoning. Always switch off the engine before opening the trunk lid. Never drive with the trunk lid open. 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.

! The trunk lid swings upwards when

opened. Therefore, make sure that there is sufficient clearance above the trunk lid.

X Press the % button on the SmartKey. X Pull handle :.

i Opening dimensions of the trunk lid

(Y page 379).

Closing

You should preferably place luggage or loads in the cargo compartment. Observe the loading guidelines (Y page 278). Do not leave the SmartKey in the trunk. You could otherwise lock yourself out. Vehicles without trunk lid remote closing feature: the trunk lid can be: Ropened and closed manually from outside Ropened automatically from outside Ropened automatically from inside Rlocked separately Runlocked with the mechanical key Ropened with the emergency release button Vehicles with trunk lid remote closing feature: the trunk lid can be: Ropened and closed manually from outside Ropened and closed automatically from

outside

Ropened and closed automatically from

inside

Rlocked separately Runlocked with the mechanical key Ropened with the emergency release button

X Pull the trunk lid down using recess :. X If necessary, lock the vehicle with the & button on the SmartKey (Y page 76) or with KEYLESS-GO (Y page 77).

i If a KEYLESS-GO key is detected in the trunk, the trunk lid cannot be locked and will open again.

86

Trunk

Opening/closing automatically from outside Important safety notes G WARNING Combustion engines emit poisonous exhaust gases such as carbon monoxide. Exhaust gases can enter the vehicle interior if the trunk lid is open when the engine is running, especially if the vehicle is in motion. There is a risk of poisoning. Always switch off the engine before opening the trunk lid. Never drive with the trunk lid open.

! The trunk lid swings upwards when

opened. Therefore, make sure that there is sufficient clearance above the trunk lid.

i Opening dimensions of the trunk lid

(Y page 379).

Opening You can open the trunk lid automatically using the SmartKey or the handle in the trunk lid. X Press and hold the F button on the

SmartKey until the trunk lid opens.

or X If the trunk is unlocked, pull the trunk lid handle and release it again immediately (Y page 85).

Closing G WARNING Parts of the body could become trapped during automatic closing of the trunk lid. Moreover, people, e.g. children, may be standing in the closing area or may enter the closing area during the closing process. There is a risk of injury. Make sure that nobody is in the vicinity of the closing area during the closing process.

Use one of the following options to stop the closing process: RPress the F button on the key. Rpress the remote operating switch on the

driver's door.

RPress the closing or locking button on the

trunk lid.

RPull the trunk lid handle.

Example: closing and locking button (vehicle with the trunk lid remote closing feature and KEYLESS- GO) : Closing button ; Locking button X To close: press closing button : in the

trunk lid.

Vehicles with the trunk lid remote closing feature and KEYLESS-GO: you can simultaneously close and lock the trunk lid. X Press locking button ; in the trunk lid. i If you leave a KEYLESS-GO key in the

trunk, the trunk lid will not lock.

Opening/closing automatically from inside Important safety notes G WARNING Parts of the body could become trapped during automatic closing of the trunk lid. Moreover, people, e.g. children, may be standing in the closing area or may enter the

closing area during the closing process. There is a risk of injury. Make sure that nobody is in the vicinity of the closing area during the closing process. Use one of the following options to stop the closing process: RPress the F button on the key. Rpress the remote operating switch on the

driver's door.

RPress the closing or locking button on the

trunk lid.

RPull the trunk lid handle. G WARNING The trunk lid can be automatically opened or closed even if the SmartKey is not in the vehicle. If children are left unsupervised in the vehicle, they could activate the functions. There is a risk of injury. When leaving the vehicle, always take the SmartKey with you and lock the vehicle. Never leave children unsupervised in the vehicle. G WARNING Combustion engines emit poisonous exhaust gases such as carbon monoxide. Exhaust gases can enter the vehicle interior if the trunk lid is open when the engine is running, especially if the vehicle is in motion. There is a risk of poisoning. Always switch off the engine before opening the trunk lid. Never drive with the trunk lid open.

i Opening dimensions of the trunk lid

(Y page 379).

Trunk

87

Opening and closing

X To open: pull remote operating switch for

trunk lid : until the trunk lid opens.

X To close: press remote operating switch for trunk lid : until the trunk lid is closed. You can open the trunk lid from the driver's seat when the vehicle is stationary and unlocked.

Unlocking the trunk (mechanical key) ! The trunk lid swings upwards when

opened. Therefore, make sure that there is sufficient clearance above the trunk lid.

If the trunk cannot be unlocked with the SmartKey or KEYLESS-GO, use the mechanical key. If you use the mechanical key to unlock and open the trunk lid, the anti-theft alarm system will be triggered (Y page 74). X Take the mechanical key out of the

SmartKey (Y page 78).

X Insert the mechanical key into the trunk lid

lock as far as it will go.

88

Side windows

Trunk lid emergency release light: Remergency release button : flashes for 30 minutes after the trunk lid is opened Remergency release button : flashes for

60 minutes after the trunk lid is closed

Side windows Important safety notes G WARNING While opening the side windows, body parts could become trapped between the side window and the door frame as the side window moves. There is a risk of injury. Make sure that nobody touches the side window during the opening procedure. If somebody becomes trapped, release the switch or pull the switch to close the side window again. G WARNING While opening the side windows, body parts in the closing area could become trapped. There is a risk of injury. Make sure that no body parts are in close proximity during the closing procedure. If somebody becomes trapped, release the switch or press the switch to open the side window again. G WARNING If children operate the side windows they could become trapped, particularly if they are left unsupervised. There is a risk of injury. Activate the override feature for the rear side windows. When leaving the vehicle, always take the SmartKey with you and lock the vehicle. Never leave children unsupervised in the vehicle.

Side window reversing feature The side windows are equipped with an automatic reversing feature. If a solid object

1 Neutral position. 2 To unlock X Turn the mechanical key counter-clockwise

from position 1 as far as it will go to position 2. The trunk is unlocked.

X Turn the mechanical key back to position

1 and remove it.

X Insert the mechanical key into the

SmartKey.

Trunk emergency release You can open the trunk lid from inside the vehicle with the emergency release button.

X Press emergency release button : briefly.

The trunk lid unlocks and opens.

The trunk lid can be unlocked and opened with the trunk lid emergency release when the vehicle is stationary or while driving. The trunk lid emergency release does not open the trunk lid if the battery is disconnected or discharged.

blocks or restricts a side window during the closing process, the side window opens again automatically. However, the automatic reversing feature is only an aid and does not relieve you of the responsibility of paying attention when closing a side window. G WARNING The reversing feature does not react: Rto soft, light and thin objects, e.g. small

fingers

Rover the last 4 mm of the closing movement Rduring resetting Rwhen closing the side window again

manually immediately after automatic reversing

This means that the reversing feature cannot prevent someone being trapped in these situations. There is a risk of injury. Make sure that no body parts are in close proximity during the closing procedure. If someone becomes trapped, press the switch to open the side window again.

Opening and closing the side windows The switches for all side windows are located on the driver's door. There is also a switch on each door for the corresponding side window. The switches on the driver's door take precedence.

: Front left ; Front right

Side windows

89

= Rear right ? Rear left X Turn the SmartKey to position 1 or 2 in the

ignition lock.

X To open: press the corresponding switch. X To close: pull the corresponding switch. i If you press the switch beyond the point

of resistance, an automatic opening/ closing process is started in the corresponding direction. You can stop automatic operation by operating the switch again.

i You can continue to operate the side

windows after you switch off the engine or remove the SmartKey. This function is available for up to five minutes or until the driver's or front-passenger door is opened.

i When the override feature for the side

windows is activated (Y page 65), the side windows cannot be operated from the rear.

Convenience opening General notes You can ventilate the vehicle before you start driving. To do this, the SmartKey is used to carry out the following functions simultaneously: Runlock the vehicle Ropen the side windows Ropen the sliding sunroof Rswitch on the seat ventilation for the

driver's seat

i The convenience opening feature can

only be operated using the SmartKey. The SmartKey must be close to the driver's door handle.

90

Side windows

Convenience opening X Point the tip of the SmartKey at the driver's

door handle.

operating. Make sure that no body parts are in close proximity during the closing procedure.

X Press and hold the % button until the

side windows and the sliding sunroof are in the desired position.

X To interrupt convenience opening:

release the % button.

Convenience closing feature Important safety notes Information on the side window reversing feature (Y page 88). G WARNING The reversing feature does not react: Rto soft, light and thin objects, e.g. small

fingers

Rover the last 4 mm of the closing movement Rduring resetting Rwhen closing the sliding sunroof again manually immediately after automatic reversing

This means that the reversing feature cannot prevent someone being trapped in these situations. There is a risk of injury. Make sure that no body parts are in close proximity during the closing procedure. If somebody becomes trapped: Rrelease the switch immediately, or Rduring automatic operation, push the

switch briefly in any direction The closing process is stopped. G WARNING When the convenience closing feature is operating, parts of the body could become trapped in the closing area of the side window and the sliding sunroof. There is a risk of injury. Observe the complete closing procedure when the convenience closing feature is

Proceed as follows if someone is trapped: With the SmartKey: Rrelease the & button. Rpress and hold the % button until the

side windows and the sliding sunroof or the panorama roof with power tilt/sliding panel open again. Using KEYLESS-GO: Rrelease the sensor surface on the door

handle.

Rpull the door handle immediately and hold

it. The side windows and the sliding sunroof or the panorama roof with power tilt/ sliding panel open.

General notes When you lock the vehicle, you can simultaneously: Rclose the side windows Rclose the sliding sunroof

Using the SmartKey The SmartKey must be close to the driver's door handle. X Point the tip of the SmartKey at the driver's

door handle.

X Press and hold the & button until the side windows and the sliding sunroof are fully closed.

X Make sure that all the side windows and the

sliding sunroof are closed.

X To interrupt convenience closing:

release the & button.

Using KEYLESS-GO The KEYLESS-GO key must be outside the vehicle. All the doors must be closed.

Side windows

91

X Touch recessed sensor surface : on the door handle until the side windows and the sliding sunroof are fully closed.

i Make sure you only touch recessed

sensor surface :.

X Make sure that all the side windows and the

sliding sunroof are closed.

X To interrupt convenience closing:

release recessed sensor surface : on the door handle.

Resetting the side windows If a side window can no longer be closed fully, you must reset it. X Close all the doors. X Turn the SmartKey to position 1 or 2 in the

ignition lock.

X Pull the corresponding switch on the door

control panel until the side window is completely closed (Y page 89).

X Hold the switch for an additional second. If the side window opens again slightly: X Immediately pull the corresponding switch

on the door control panel until the side window is completely closed (Y page 89). X Hold the switch for an additional second. X If the corresponding side window remains closed after the button has been released, the side window has been reset correctly. If this is not the case, repeat the steps above again.

92

Sliding sunroof

Problems with the side windows G WARNING If you close a side window again immediately after it has been blocked or reset, the side window closes with increased or maximum force. The reversing feature is then not active. Parts of the body could be trapped in the closing area in the process. This poses an increased risk of injury or even fatal injury. Make sure that no parts of the body are in the closing area. To stop the closing process, release the switch or push the switch again to reopen the side window.

Problem A side window cannot be closed because it is blocked by objects, e.g. leaves in the window guide.

A side window cannot be closed and you cannot see the cause.

Possible causes/consequences and M Solutions X Remove the objects. X Close the side window.

If a side window is obstructed during closing and reopens again slightly: X Immediately after the window blocks, pull the corresponding

switch again until the side window has closed. The side window is closed with increased force.

If a side window is obstructed again during closing and reopens again slightly: X Immediately after the window blocks, pull the corresponding

switch again until the side window has closed. The side window is closed without the anti-entrapment feature.

Sliding sunroof Important safety notes G WARNING While opening and closing the sliding sunroof, body parts in close proximity could become trapped. There is a risk of injury. Make sure that no body parts are in close proximity during the opening and closing procedures. If somebody becomes trapped: Rrelease the switch immediately, or Rduring automatic operation, push the

switch briefly in any direction

The opening or closing procedure will be stopped. G WARNING If children operate the sliding sunroof they could become trapped, particularly if they are left unsupervised. There is a risk of injury. When leaving the vehicle, always take the SmartKey with you and lock the vehicle. Never leave children unsupervised in the vehicle.

! Only open the sliding sunroof if it is free of snow and ice. Otherwise, malfunctions may occur.

Sliding sunroof

93

Do not allow anything to protrude from the sliding sunroof. Otherwise, the seals could be damaged.

! The weather can change abruptly. It could

start to rain or snow. Make sure that the sliding sunroof is closed when you leave the vehicle. The vehicle electronics can be damaged if water enters the vehicle interior.

i Resonance noises can occur in addition to the usual airflow noises when the sliding sunroof is open. They are caused by minor pressure fluctuations in the vehicle interior. Change the position of the sliding sunroof or open a side window slightly to reduce or eliminate these noises.

Sliding sunroof reversing feature The sliding sunroof is equipped with an automatic reversing feature. If a solid object blocks or restricts the sliding sunroof during the closing process, the sliding sunroof opens again automatically. However, the automatic reversing feature is only an aid and does not relieve you of the responsibility of paying attention when closing the sliding sunroof. G WARNING The reversing feature does not react: Rto soft, light and thin objects, e.g. small

fingers

Rover the last 4 mm of the closing movement Rduring resetting Rwhen closing the sliding sunroof again manually immediately after automatic reversing

This means that the reversing feature cannot prevent someone being trapped in these situations. There is a risk of injury. Make sure that no body parts are in close proximity during the closing procedure.

If somebody becomes trapped: Rrelease the switch immediately, or Rduring automatic operation, push the

switch briefly in any direction The closing process is stopped.

Operating the sliding sunroof Opening and closing

Overhead control panel : To raise ; To open = To close/lower X Turn the SmartKey to position 1 or 2 in the

ignition lock.

X Press or pull the 3 switch in the

corresponding direction.

i If you press the 3 switch beyond the point of resistance, an automatic opening/ closing process is started in the corresponding direction. You can stop automatic operation by operating the switch again.

i The automatic opening and raising

feature is available only when the sliding sunroof is closed.

The sun protection cover automatically opens along with the sliding sunroof. You can open or close the sun protection cover manually when the sliding sunroof is raised or closed. i You can continue to operate the sliding sunroof after switching off the engine or

94

Sliding sunroof

removing the SmartKey from the ignition lock. This function remains active for five minutes or until you open a front door.

Resetting ! If the sliding sunroof still cannot be opened or closed fully after resetting, contact a qualified specialist workshop.

Reset the sliding sunroof if it does not move smoothly. X Turn the SmartKey to position 2 in the

ignition lock.

X Raise the sliding sunroof fully at the rear

(Y page 93).

second.

X Keep the 3 switch pressed for another

X Make sure that the sliding sunroof can be fully opened and closed again (Y page 93).

X If this is not the case, repeat the steps

above again.

Sliding sunroof

95

Problems with the sliding sunroof G WARNING If you close the sliding sunroof again immediately after it has been blocked or reset, the sliding sunroof closes with increased or maximum force. The reversing feature is then not active. Parts of the body could be trapped in the closing area in the process. This poses an increased risk of injury or even fatal injury. Make sure that no parts of the body are in the closing area. If somebody becomes trapped: Rrelease the switch immediately, or Rduring automatic operation, push the switch briefly in any direction The closing process is stopped.

! If the sliding sunroof still cannot be opened or closed as a result of a malfunction, contact

a qualified specialist workshop. Problem The sliding sunroof cannot be closed and you cannot see the cause.

Possible causes/consequences and M Solutions If the sliding sunroof is obstructed during closing and reopens again slightly: X Immediately after the sliding sunroof blocks, pull the 3
switch in the overhead control panel down to the point of resistance and hold it until the sliding sunroof is closed. The sliding sunroof is closed with increased force.

If the sliding sunroof is obstructed again during closing and then reopens slightly: X Immediately after the sliding sunroof blocks, pull the 3
switch in the overhead control panel down to the point of resistance and hold it until the sliding sunroof is closed. The sliding sunroof is closed without the anti-entrapment feature.

96

Useful information .............................. 98
Correct driver's seat position ............ 98
Seats .................................................... 99
Steering wheel .................................. 106
Mirrors ............................................... 109
Memory function .............................. 112

97

98

Correct driver's seat position

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).

Correct driver's seat position

G WARNING You could lose control of your vehicle if you do the following while driving: Radjust the driver's seat, head restraint,

steering wheel or mirrors

Rfasten the seat belt There is a risk of an accident. Adjust the driver's seat, head restraint, steering wheel and mirror and fasten your seat belt before starting the engine.

X Observe the safety guidelines on seat

adjustment (Y page 99).

X Make sure that seat = is adjusted

properly. Electrical seat adjustment (Y page 100) When adjusting the seat, make sure that: Ryou are as far away from the driver's air bag

as possible.

Ryou are sitting in a normal upright position. Ryou can fasten the seat belt properly. Ryou have moved the backrest to an almost

vertical position.

Ryou have set the seat cushion angle so that

your thighs are gently supported.

Ryou can depress the pedals properly. X Check whether the head restraint is

adjusted properly. When doing so, make sure that you have adjusted the head restraint so that the back of your head is supported at eye level by the center of the head restraint.

X Observe the safety guidelines on steering

wheel adjustment (Y page 106).

X Make sure that steering wheel : is

adjusted properly. Adjusting the steering wheel electrically (Y page 106)

When adjusting the steering wheel, make sure that: Ryou can hold the steering wheel with your

arms slightly bent.

Ryou can move your legs freely. Ryou can see all the displays in the

instrument cluster clearly.

X Observe the safety guidelines for seat belts

(Y page 55).

X Check whether you have fastened seat

belt ; properly (Y page 56).

Seats

99

The seat belt should: Rfit snugly across your body Rbe routed across the middle of your

shoulder

Rbe routed in your pelvic area across the hip

joints

X Before starting off, adjust the rear-view mirror and the exterior mirrors in such a way that you have a good view of road and traffic conditions (Y page 109).

X Vehicles with a memory function: save the seat, steering wheel and exterior mirror settings with the memory function (Y page 112).

Seats Important safety notes G WARNING Children could become trapped if they adjust the seats, particularly when unattended. There is a risk of injury. When leaving the vehicle, always take the SmartKey with you and lock the vehicle. Never leave children unsupervised in the vehicle. G WARNING You could lose control of your vehicle if you do the following while driving: Radjust the driver's seat, head restraint,

steering wheel or mirrors

Rfasten the seat belt There is a risk of an accident. Adjust the driver's seat, head restraint, steering wheel and mirror and fasten your seat belt before starting the engine. G WARNING If you adjust the seat height carelessly, you or other vehicle occupants could be trapped and thereby injured. Children in particular could accidentally press the electrical seat

adjustment buttons and become trapped. There is a risk of injury. While moving the seats, make sure that your hands or other body parts do not get under the lever assembly of the seat adjustment system. G WARNING When you adjust a seat, you or other vehicle occupants could become trapped, e.g. on the seat guide rail. There is a risk of injury. Make sure when adjusting a seat that no one has any body parts in the sweep of the seat. G WARNING If head restraints are not installed and adjusted correctly, they cannot provide protection as intended. There is an increased risk of injury in the head and neck area, e.g. in the event of an accident or when braking. Always drive with the head restraints installed. Before driving off, make sure for every vehicle occupant that the center of the head restraint supports the back of the head at about eye level. G WARNING The seat belt does not offer the intended level of protection if the backrest is not in the upright position. When braking or in the event of an accident, you could slide underneath the seat belt and sustain abdomen or neck injuries, for example. This poses an increased risk of injury or even fatal injury. Adjust the seat properly before beginning your journey. Always make sure that the seat is in the upright position. 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

100 Seats

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.

! To avoid damage to the seats and the seat heating, observe the following information: Rkeep liquids from spilling on the seats. If liquid is spilled on the seats, dry them as soon as possible.

Rif the seat covers are damp or wet, do not

switch on the seat heating. The seat heating should also not be used to dry the seats.

Rclean the seat covers as recommended;

see "Interior care".

Rdo not transport heavy loads on the

seats. Do not place sharp objects on the seat cushions, e.g. knives, nails or tools. The seats should only be occupied by passengers, if possible.

Rwhen the seat heating is in operation, do

not cover the seats with insulating materials, e.g. blankets, coats, bags, seat covers, child seats or booster seats. ! Make sure that there are no objects in the footwell or behind the seats when resetting the seats. There is a risk that the seats and/or the objects could be damaged.

i The head restraints in the front seats are

installed with the NECK-PRO system (Y page 53). For this reason, it is not possible to remove the head restraints from the front seats. For more information, contact a qualified specialist workshop.

i Further related subjects:

Adjusting the seats

: Head restraint height ; Seat cushion angle = Seat height ? Seat fore-and-aft adjustment A Backrest angle i If PRE-SAFE® is triggered, the front-

passenger seat will be moved to a better position if it was previously in an unfavorable position.

i You can store the seat settings using the

memory function (Y page 112).

i Vehicles with the through-loading feature: if you fold down a rear seat backrest, the respective front seat is moved forwards slightly in order to avoid contact.

Adjusting the head restraints Important safety notes G WARNING You could lose control of your vehicle if you do the following while driving: Radjust the driver's seat, head restraint,

steering wheel or mirrors

Rfasten the seat belt There is a risk of an accident. Adjust the driver's seat, head restraint, steering wheel and mirror and fasten your seat belt before starting the engine.

G WARNING If head restraints are not installed and adjusted correctly, they cannot provide protection as intended. There is an increased risk of injury in the head and neck area, e.g. in the event of an accident or when braking. Always drive with the head restraints installed. Before driving off, make sure for every vehicle occupant that the center of the head restraint supports the back of the head at about eye level.

General notes Observe the important safety guidelines for seats (Y page 99). Do not rotate the head restraints of the front and rear seats. Otherwise, you cannot adjust the height and angle of the head restraints to the correct position.

Adjusting the height of the head restraints electrically

X To adjust the head restraint height: slide switch for head restraint adjustment : up or down in the direction of the arrow.

Seats

101

Adjusting the luxury head restraints

X To adjust the side bolsters of the head

restraint: push or pull right or left-hand side bolster : into the desired position.

X To adjust the angle of the head

restraint: push or pull the head restraint in the direction of arrow ;.

i Adjust the head restraint so that the back

of your head is as close to the head restraint as possible.

Rear seat head restraints Important safety notes G WARNING For your protection, drive only with properly positioned head restraints. Adjust the head restraints so that they are as close as possible to your head. This will reduce the potential for injury to the head and neck in the event of an accident or similar situation. Whenever the rear seats are occupied, only drive the vehicle with the head restraints installed and engaged. Head restraints are intended to help reduce injuries during an accident.

102 Seats

Adjusting the rear seat head restraint angle

X To remove: pull the head restraint up to

the stop.

X Press release catch : and pull the head

restraint out of the guides.

X To re-install: insert the head restraint so that the notches on the bar are on the left when viewed in the direction of travel.

X Pull or push the top of the head restraint

until it is in the desired position.

Removing and installing the rear seat head restraints G WARNING If head restraints are not installed and adjusted correctly, they cannot provide protection as intended. There is an increased risk of injury in the head and neck area, e.g. in the event of an accident or when braking. Always drive with the head restraints installed. Before driving off, make sure for every vehicle occupant that the center of the head restraint supports the back of the head at about eye level.

! Make sure that the rear window roller

sunblind has been retracted before the rear head restraints are removed. You could otherwise damage the roller sunblind.

X Push the head restraint down until you hear

it engage in position.

Adjusting the multicontour seat The multicontour seat function is only available for vehicles in Canada.

: To adjust the thigh cushion ; To adjust the backrest contour in the

lumbar region

= To adjust the backrest contour in the

upper back region

? To adjust the side bolsters of the seat

backrest

You can adjust the contour of the front seats individually so as to provide optimum support for your back and sides. X Turn the SmartKey to position 2 in the

ignition lock (Y page 147).

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103

Adjusting the active multicontour seat Overview

: To adjust the seat cushion length ; To switch the dynamic function on or off = To adjust the side bolsters of the seat

backrest

? To switch the massage function on or off A To adjust the contour of the backrest to

increase/decrease support

B To adjust the height/depth of the

backrest contour

The active multicontour seat on the driver's side automatically adapts the sides of the backrest to your current driving style. You can adjust the contour of the seat individually so as to provide optimum support for your back and sides.

You can select the following levels:

Level 1 (one indicator lamp)

Level 2 (two indicator lamps)

Standard setting: slightly increased lateral support and slow build-up of air pressure in the side bolsters of the seat backrest. Sport setting: increased lateral support and fast build-up of pressure in the side bolsters of the seat backrest.

Massage function (PULSE) The massage function helps you to prevent muscle tension on long journeys. You can choose between two levels. X To switch on: press button ? once or

twice until the desired level is set. One or two indicator lamps in button ? light up. The air cushions in the lumbar region vibrate for approximately 20 minutes.

Adjusting the 4-way lumbar support

Dynamic function The dynamic function adjusts the air cushions in the side bolsters of the seat backrests to ensure ideal lateral support at all times. You can choose between two levels. X To switch on: press button ; once or

twice until the desired level is set. One or two indicator lamps in button ; light up.

X To switch off: press button ; repeatedly until all indicator lamps in button ; go out.

: To raise the backrest contour ; To soften the backrest contour = To lower the backrest contour ? To harden the backrest contour

X Turn the SmartKey to position 1 or 2 in the

ignition lock (Y page 147).

X To switch on: press button : repeatedly

until the desired heating level is set.

X To switch off: press button : repeatedly

until all the indicator lamps go out.

i If the battery voltage is too low, the seat

heating may switch off.

104 Seats

You can adjust the contour of the front seat backrests individually to provide optimum support for your back.

Switching the seat heating on/off Activating/deactivating G WARNING Repeatedly switching on the seat heating can cause the seat cushion and backrest pads to become very hot. The health of persons with limited temperature sensitivity or a limited ability to react to excessively high temperatures may be affected or they may even suffer burn-like injuries. There is a risk of injury. Therefore, do not switch the seat heating on repeatedly.

Driver's and front-passenger seat The three red indicator lamps in the button indicate the heating level you have selected. The system automatically switches down from level 3 to level 2 after approximately eight minutes. The system automatically switches down from level 2 to level 1 after approximately ten minutes. The system automatically switches off approximately 20 minutes after it is set to level 1.

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105

Problems with the seat heating

Problem The seat heating has switched off prematurely or cannot be switched on.

Possible causes/consequences and M Solutions The on-board voltage is too low because too many electrical consumers are switched on. X Switch off electrical consumers that you do not need, such as

the rear window defroster or interior lighting. Once the battery is sufficiently charged, the seat heating will switch back on automatically.

Switching the seat ventilation on/off Activating/deactivating

The three blue indicator lamps in the buttons indicate the ventilation level you have selected. X Turn the SmartKey to position 2 in the

ignition lock (Y page 147).

X To switch on: press button : repeatedly

until the desired ventilation level is set.

X To switch off: press button : repeatedly

until all the indicator lamps go out.

i If the battery voltage is too low, the seat

ventilation may switch off.

i You can open the side windows and the

sliding sunroof using the "Convenience opening" feature (Y page 89). The seat ventilation of the driver's seat automatically switches to the highest level.

106 Steering wheel

Problems with the seat ventilation

Problem The seat ventilation has switched off prematurely or cannot be switched on.

Possible causes/consequences and M Solutions The on-board voltage is too low because too many electrical consumers are switched on. X Switch off electrical consumers that you do not need, such as

the rear window defroster or interior lighting. Once the battery is sufficiently charged, the seat ventilation will switch back on automatically.

Steering wheel Important safety notes G WARNING You could lose control of your vehicle if you do the following while driving: Radjust the driver's seat, head restraint,

steering wheel or mirrors

Rfasten the seat belt There is a risk of an accident. Adjust the driver's seat, head restraint, steering wheel and mirror and fasten your seat belt before starting the engine. G WARNING Children could injure themselves if they adjust the steering wheel. There is a risk of injury. When leaving the vehicle, always take the SmartKey with you and lock the vehicle. Never leave children unsupervised in the vehicle.

Adjusting the steering wheel electrically

: To adjust the steering wheel height ; To adjust the steering wheel position

(fore-and-aft adjustment) i Further related subjects:

REASY-ENTRY/EXIT feature

(Y page 108)

RStoring settings (Y page 112)

Steering wheel heating Activating/deactivating

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107

X Turn the SmartKey to position 2 in the

ignition lock (Y page 147).

X To switch on/off: turn the lever in the

direction of arrow : or ;. Indicator lamp = lights up or goes out. Vehicles without KEYLESS-GO: when you remove the SmartKey from the ignition lock, the steering wheel heating is deactivated. Vehicles with KEYLESS-GO: when you switch off the ignition and open the driver's door, the steering wheel heating is deactivated. i The steering wheel heating may switch off

temporarily if: Rthe temperature in the vehicle interior is

above 86 ‡ (30 †).

Rthe temperature of the steering wheel is

above 95 ‡ (35 †).

Indicator lamp = remains on.