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sole is lit.
Possible causes/consequences and M Solutions A special Mercedes-Benz child seat with a transponder for auto- matic child seat recognition has been fitted to the front-passenger seat. The front-passenger front airbag has therefore been disabled as desired.
The 4 PASSENGER AIRBAG OFF indicator lamp on the centre con- sole is lit. or The + warning lamp lights up and/or the 4 PASSENGER AIR- BAG OFF indicator lamp does not light up briefly when you switch the ignition on.
G Risk of injury There is no child seat fitted to the front-passenger seat. Automatic child seat recognition is malfunctioning. X Remove electronic equipment from the front-passenger seat,
e.g.: Rlaptop Rmobile phone Rcards with transponders, such as ski passes or access cards
If the 4 PASSENGER AIRBAG OFF indicator lamp is still lit: X Visit a qualified specialist workshop.
Suitable positioning of the child restraint systems X If you fit a child restraint system to the front-passenger seat, position the front- passenger seat in its rearmost position.
X If you install a child restraint system on the rear seat on the second row, move the rear seat backrests in the second row to an upright position.
Key to the letters used in the following table: X Seat which is unsuitable for children in
this weight category.
U Suitable for child restraint systems in the
"Universal" category that are approved for use in this weight category.
L Suitable for child restraint systems as rec-
ommended; see the following table of "Recommended child restraint systems" (Y page 59).
Front-passenger seat Front- Weight cat- passenger egories front air- bag is not disabled.
Category 0: up to 10 kg Category 0+: up to 13 kg Category I: 9 to 18 kg Category II: 15 to 25 kg Category III: 22 to 36 kg
Front- passenger front air- bag is disa- bled.
Vehicles with automatic child seat recog- nition in the front-passenger seat: a "Uni-
58
Children in the vehicle
versal" category child restraint system with a transponder for automatic child seat recog- nition must be fitted when the front- passenger airbag is disabled. The 4
PASSENGER AIRBAG OFF indicator lamp must be lit. Rear seats Weight cat- egoriesCentre
Third row of seats, left and right
Category 0: up to 10 kg Category 0+: up to 13 kg Category I: 9 to 18 kg Category II: 15 to 25 kg Category III: 22 to 36 kg
"Universal" category child restraint systems can be recognised by their orange approval label.
Key to the letters used in the following table:
ISOFIX position that is not suitable for ISOFIX child restraint systems in this weight category and/or size category. IUF Suitable for forward-facing ISOFIX child
restraint systems that belong to the "Universal" category which are approved for use in this weight category. Suitable for ISOFIX child restraint sys- tems as recommended; see the follow- ing table of "Recommended child restraint systems" (Y page 59).
IL
Equip- ment
Carry-cot weight category Third Size cat- row of egory seats, left and right
ISO/L1
ISO/L2Third row of seats, left and right
Weight category 0: up to 10 kg, up to approximately 6 months Size cat- egory
Equip- ment
Rear seat, left and right
ISO/R1
IUF
Weight category 0+: up to 13 kg, up to approximately 15 months Rear Size cat- seat, egory left and right
Equip- ment
Third row of seats, left and right
Third row of seats, left and right
Example: approval label on the child restraint sys- tem Suitability of the rear seats for attaching ISOFIX child restraint systems
ISO/R1
ISO/R2
ISO/R3IUF IUF IUF
Weight category I: 9 to 18 kg, approx- imately 9 months to 4 years Size cat- egory
Equip- ment
Rear seat, left and right
B1
IUF ISO/R2
IUF ISO/R3
IUF ISO/F2
ISO/F2X IUF ISO/F3
IUFThird row of seats, left and right IUF IUF IUF
Recommended child restraint systems When installing a child restraint system with- out a transponder for automatic child seat recognition on the front-passenger seat: X Move the front-passenger seat to its high-
est and rearmost position.
Weight category 0: up to 10 kg, up to approximately 6 months Manufacturer Type Approval number (E1 ...) Order number (A 000 ...) Automatic child seat recognition
Britax Römer BABY SAFE PLUS 03 301146
04 301146
970 10 00Yes
Weight category 0+: up to 13 kg, up to approximately 15 months Manufacturer Type Approval number (E1 ...)
Britax Römer BABY SAFE PLUS 03 301146
04 301146Children in the vehicle
59
Order number (A 000 ...) Automatic child seat recognition
970 10 00
Yes
Britax Römer Britax Römer
DUO PLUS 03 301133
04 301133Weight category I: 9 to 18 kg, approx- imately 9 months to 4 years Manufac- turer Type Approval number (E1 ...) Order num- ber (A 000 ...) Automatic child seat recognition
DUO PLUS 03 301133
04 301133970 11 00
970 16 00
Yes
No
Britax Römer Britax Römer
KID 03 301148
04 301148Weight category II/III: 15 to 36 kg, approximately 4 to 12 years Manufac- turer Type Approval number (E1 ...) Order num- ber (A 000 ...) Automatic child seat recognition
970 12 00
Yes
No
KID 03 301148
04 301148970 17 00
Suggested "Universal" category ISOFIX child restraint systems:
60
Children in the vehicle
Carry-cot weight category Size categories F, G Manufacturer – Type – Approval number – (E1 ...) Order number Automatic child seat recognition
– –
Category 0: up to 10 kg Size category Manufacturer – Type – Approval number – (E1 ...) Order number Automatic child seat recognition
– –
Category 0+: up to 13 kg Size catego- ries Manufac- turer Type
Britax Römer –
D, C
BABY SAFE ISOFIX PLUS 04 301146
Approval number (E1 ...) Order num- ber Automatic child seat recognition
B6 6 86
8224
No–
–
–
–
D, C, B, A – – –
Category I: 9 to 18 kg Size categories Manufacturer Type Approval number (E1 ...) Order number Automatic child seat recognition
– –
Size category Manufacturer Type Approval number (E1 ...) Order number Automatic child seat recognition
B1
Britax Römer DUO PLUS 03 301133
04 301133
A000 970 11 00
YesChild-proof locks Important safety notes G WARNING Activate the child-proof locks for the rear doors and the override switch for the rear windows when children are travelling in the vehicle. Otherwise, the children could open doors or side windows while the vehicle is in motion and injure themselves or others. G WARNING Do not leave children unsupervised in the vehicle, even if they are secured in a child restraint system. They could injure them- selves on parts of the vehicle. They could also be seriously or even fatally injured by pro- longed exposure to extreme heat or cold.
Do not expose the child restraint system to direct sunlight. Parts of the child restraint sys- tem could heat up and the child could burn herself/himself on them. If a child opens a door, the child or other per- sons could be injured as a result. They could get out and injure themselves or be injured by a passing vehicle.
Child-proof locks for the rear doors
Driving safety systems
61
Override feature for the rear side win- dows
X To activate/deactivate: press switch :. Switch : is pushed in or extended. If the switch has engaged, operation of the rear side windows is disabled. Operation is then only possible using the switches in the driv- er's door.
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 down 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 up in the direction of arrow :.
Driving safety systems Driving safety systems overview In this section, you will find information about the following driving safety systems: RABS (Anti-lock Braking System)
(Y page 62)
RBAS (Brake Assist System)(Y page 62) Radaptive brake lamps(Y page 62) RESP® (Electronic Stability Program)
REBD (electronic brake force distribution)
(Y page 63)
(Y page 64)
Rdistance warning function(Y page 65)
Important safety notes If you fail to adapt your driving style or become distracted, the driving safety sys- tems 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 dis- tance to the vehicle in front, for vehicle speed
62 Driving safety systems
and for braking in good time. Always adapt your driving style to suit the prevailing road and weather conditions and maintain a safe distance from the vehicle in front. Drive care- fully. i The driving safety systems described only work as effectively as possible when there is adequate contact between the tyres and the road surface. Please pay special atten- tion to the notes on tyres, recommended minimum tyre tread depths, etc. (Y page 312). In wintry driving conditions, always use winter tyres (M+S tyres) and if necessary, snow chains. Only in this way will the driv- ing 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" sec-
tion (Y page 61). G WARNING If ABS is faulty, the wheels could lock when braking. The steerability and braking charac- teristics may be severely impaired. Addition- ally, further driving safety systems are deac- tivated. There is an increased danger of skid- ding and accidents. Drive on carefully. Have ABS checked imme- diately 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 235) and display messages which may be shown in the instrument cluster (Y page 211). ABS regulates brake pressure in such a way that the wheels do not lock when you brake. This allows you to continue steering the vehi- cle when braking. ABS works from a speed of about 8 km/h upwards, regardless of road-surface condi-
tions. ABS works on slippery surfaces, even when 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.
Brakes X If ABS intervenes: continue to depress the brake pedal with force until the braking sit- uation 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 indica- tion of hazardous road conditions, and func- tions as a reminder to take extra care while driving.
BAS (Brake Assist System) i Observe the "Important safety notes" sec-
tion (Y page 61). G WARNING If BAS is malfunctioning, the braking distance in an emergency braking situation is increased. There is a risk of accident. In an emergency braking situation, depress the brake pedal with full force. ABS prevents the wheels from locking.
BAS operates in emergency braking situa- tions. 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.
Adaptive brake lamps If you brake sharply from a speed of more than 25 km/h or if braking is assisted by BAS, the brake lamps flash rapidly. In this way,
traffic travelling behind you is warned in an even more noticeable manner. If you brake sharply from a speed of more than 70 km/h to a standstill, the hazard warn- ing lamps are activated automatically. If the brakes are applied again, the brake lamps light up continuously. The hazard warning lamps switch off automatically if you travel faster than 10 km/h. You can also switch off the hazard warning lamps using the hazard warning button (Y page 114).
ESP® (Electronic Stability Program) Important safety notes i Observe the "Important safety notes" sec-
tion (Y page 61). G WARNING If ESP® is malfunctioning, ESP® is unable to stabilise the vehicle. In addition, other driving safety systems are switched off. This increa- ses the risk of skidding and an accident. Drive on carefully. Have ESP® checked at a qualified specialist workshop.
! Vehicles with 4MATIC: only operate the vehicle for a maximum of ten seconds on a brake dynamometer. Switch off the igni- tion. Application of the brakes by ESP® may oth- erwise destroy the brake system.
! Vehicles with 4MATIC: function or per-
formance tests may only be carried out on a 2-axle dynamometer. Before operating the vehicle on such a dynamometer, please consult a qualified specialist workshop. You could otherwise damage the drive train or the brake system.
! The ignition must be switched off if you are towing the vehicle with the front/rear axle raised. Intervention by ESP® could oth- erwise damage the brake system.
Driving safety systems
63
! Do not tow vehicles with 4MATIC with the
front or rear axle raised.
ESP® is deactivated if the å warning lamp in the instrument cluster lights up continu- ously when the engine is running. If the ÷ warning lamp and the å warn- ing lamp are lit continuously, ESP® is not available due to a malfunction. Observe the information on warning lamps (Y page 237) and display messages which may be shown in the instrument cluster (Y page 211). If ESP® detects that the vehicle is deviating from the direction desired by the driver, one or more wheels are braked to stabilise 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 stabilise 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 circum-
stances.
X When pulling away, only depress the accel-
erator pedal as far as is necessary.
X Adapt your driving style to suit the prevail-
ing road and weather conditions.
i Only use wheels with the recommended
tyre sizes. Only then will ESP® function properly.
ETS/4ETS (Electronic Traction System) Traction control is part of ESP®. Traction control brakes the drive wheels indi- vidually 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. On vehicles with 4MATIC, more drive torque is also transferred to the wheel or wheels with traction.
64 Driving safety systems
Traction control remains active if you deacti- vate ESP®.
RESP® still provides support when you
brake.
Deactivating/activating ESP® G WARNING If you deactivate ESP®, ESP® no longer sta- bilises the vehicle. There is an increased risk of skidding and an accident. Only deactivate ESP® in the situations descri- bed in the following.
X To switch off: press button :.
The å ESP® OFF warning lamp in the instrument cluster lights up.
X To switch on: press button :.
The å ESP® OFF warning lamp in the instrument cluster goes out.
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 flashes. In such situa- tions, ESP® will not stabilise the vehicle. It may be best to deactivate ESP® in the fol- lowing 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.
Rengine torque is not limited and the drive wheels are able to spin. The spinning of the wheels results in a cutting action for better traction.
ESP® trailer stabilisation G WARNING If road and weather conditions are poor, trailer stabilisation will not be able to prevent the vehicle/trailer combination from swerv- ing. Trailers with a high centre of gravity can tip over before ESP® can detect this. There is a risk of an accident. Always adapt your driving style to the prevail- ing road and weather conditions.
If your vehicle/trailer combination begins to lurch, you can only stabilise the vehicle/ trailer combination by depressing the brake firmly. In this situation, ESP® assists you and can detect if the vehicle/trailer combination begins to lurch. ESP® slows the vehicle down by braking and limiting the engine output until the vehicle/trailer combination has stabi- lised. Trailer stabilisation is active above speeds of about 65 km/h. Trailer stabilisation does not work if ESP® is deactivated or disabled because of a mal- function.
EBD (electronic brake force distribu- tion) i Observe the "Important safety notes" sec-
tion (Y page 61). G WARNING If EBD has malfunctioned, the rear wheels can still lock, e.g. under full braking. This increa- ses 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 spe- cialist workshop.
Observe information regarding indicator and warning lamps (Y page 235) as well as dis- play messages (Y page 213). EBD monitors and controls the brake pres- sure on the rear wheels to improve driving stability while braking.
Distance warning function Important safety notes i Observe the "Important safety notes" sec-
tion (Y page 61). G WARNING The distance warning function does not react: Rto people or animals Rto oncoming vehicles Rto crossing traffic Rwhen cornering Thus, the distance warning function cannot provide a warning in all critical situations. There is a risk of an accident. Always pay careful attention to the traffic sit- uation and be ready to brake.
The distance warning function is only availa- ble in vehicles with DISTRONIC. The distance warning function cannot always clearly identify objects and complex traffic situations. In such cases, the distance warning signal may: Rgive an unnecessary warning Rnot give a warning Always pay careful attention to the traffic sit- uation and do not rely solely on the distance warning function.
Driving safety systems
65
Function X To activate/deactivate: activate or deac- tivate the distance warning function in the on-board computer (Y page 207). After activation, the Ä symbol is dis- played in the lower multifunction display. The distance warning function can help you to minimise the risk of a collision with the vehicle in front or reduce the effects of such a collision. If the distance warning function detects that there is a risk of a collision, you will be warned visually and acoustically. The distance warning function cannot prevent a collision without your intervention. The distance warning function will issue a warning at speeds of around 30 km/h or more if: Rthe distance to the vehicle in front is too short for the speed you are driving at for several seconds. The · distance warn- ing lamp then lights up in the instrument cluster.
Ryou are rapidly approaching the vehicle in
front. An intermittent warning tone will then sound and the · distance warning lamp will light up in the instrument cluster. X Brake immediately in order to increase the
distance from the vehicle in front.
or X Take evasive action provided it is safe to do
so.
For the distance warning function to assist you when driving, the function must be acti- vated in the on-board computer and be opera- tional (Y page 207). Due to the nature of the system, particularly complicated driving conditions may cause the system to display an unnecessary warning. With the help of the radar sensor system, the distance warning function can detect obsta- cles that are in the path of your vehicle for an extended period of time. At speeds up to approximately 70 km/h, the distance warning function may also detect
66
Anti-theft systems
stationary obstacles, for example, stopped or parked vehicles. If you approach an obstacle and the distance warning function detects a risk of a collision, the system will initially alert you both visually and acoustically. In particular, the detection of obstacles can be impaired if there is: Rdirt on the sensors or anything else cover-
ing the sensors
Rsnow or heavy rain Rinterference by other radar sources Rthe possibility of strong radar reflections,
for example, in multi-storey car parks
Ra narrow vehicle travelling in front, e.g. a
motorcycle
Ra vehicle travelling in front on a different
line
Following damage to the front end of the vehi- cle, have the configuration and operation of the radar sensor checked at a qualified spe- cialist workshop. This also applies to colli- sions at slow speeds where there is no visible damage to the front of the vehicle.
Anti-theft systems Immobiliser X To activate with the key: remove the key
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. The immobiliser prevents your vehicle from being started without the correct key. When leaving the vehicle, always take the key with you and lock the vehicle. Anyone can start the engine if a valid key has been left inside the vehicle. i The immobiliser is always deactivated
when you start the engine.
ATA (Anti-Theft Alarm system)
X To prime: lock the vehicle with the key or
KEYLESS-GO. Indicator lamp : flashes. The alarm sys- tem is primed after approximately 10 seconds.
X To switch off with the key: unlock the
vehicle using the key.
or X Insert the key into the ignition lock. X To switch off with KEYLESS-GO: unlock
the vehicle using KEYLESS-GO.
or X Press the Start/Stop button on the dash- board. The key must be inside the vehicle. A visual and audible alarm is triggered if the alarm system is primed and you open: Ra door Rthe vehicle with the emergency key ele-
ment
Rthe tailgate Rthe bonnet X To turn the alarm off with the key: press
the % or & button on the key. The alarm is switched off.
or X Insert the key into the ignition lock.
The alarm is switched off.
X To stop the alarm using KEYLESS-GO: grasp the outside door handle. The key must be outside the vehicle. The alarm is switched off.
or X Press the Start/Stop button on the dash- board. The key must be inside the vehicle. The alarm is switched off.
The alarm is not switched off, even if you close the open door that has triggered it, for example.
Tow-away protection Function An audible and visual alarm is triggered if your vehicle's angle of inclination is altered while tow-away protection is primed. This can occur if the vehicle is jacked up on one side, for example.
To activate X Make sure that:
Rthe doors are closed Rthe tailgate is closed Only then is the tow-away protection primed.
X Lock the vehicle with the key or KEYLESS-
GO. Tow-away protection is primed after approximately 30 seconds.
Deactivating X To switch off with the key: unlock the
vehicle using the key.
or X Insert the key into the ignition lock.
Tow-away protection is switched off auto- matically.
Anti-theft systems
67
X To switch off with KEYLESS-GO: unlock
the vehicle using KEYLESS-GO.
or X Press the Start/Stop button on the dash- board. The key must be inside the vehicle. Tow-away protection is switched off auto- matically.
Deactivating It is possible to switch off tow-away protec- tion on the on-board computer for the next time the vehicle is locked (Y page 207). If you select Tow-away protection in the Vehicle submenu in the "Adjust display when ignition is switched off" function (Y page 203), the Tow-away protection on Switch off using +/- message appears in the multifunction display. You can then deactivate or prime tow-away protection by pressing the X or W but- ton on the multifunction steering wheel. X Press the X button on the multifunction steering wheel. The Tow-away protection off message appears in the multifunction display. If you press the W button, tow-away pro- tection remains primed.
X Lock the vehicle with the key or, on vehicles with KEYLESS-GO, with the locking button on the door handle.
Tow-away protection remains deactivated until: Rthe vehicle is unlocked again and Ra door is opened and closed again and Rthe vehicle is locked again To prevent a false alarm, deactivate the tow- away protection if you lock your vehicle and it: Ris being transported Ris being loaded onto a ferry or car trans-
porter, for example
Ris parked on a movable surface, e.g. in a
split-level garage
68
Anti-theft systems
Interior motion sensor Function When the interior motion sensor is primed, a visual and audible alarm is triggered if move- ment is detected in the vehicle interior. This can occur if someone reaches into the vehicle interior, for example.
Priming X Make sure that:
Rthe side windows are closed Rthe hinged side windows are closed Rthe sliding sunroof/panorama sliding
sunroof is closed
Rthere are no objects, e.g. mascots, hang- ing on the rear-view mirror or on the grab handles on the roof trim
This will prevent false alarms.
X Make sure that:
Rthe sliding sunroof/panorama sliding
sunroof is closed
Rthe doors are closed Rthe tailgate is closed Only then is the interior motion sensor primed.
X Lock the vehicle with the key or KEYLESS-
GO. The interior motion sensor is primed after approximately 40 seconds.
Deactivating X To switch off with the key: unlock the
vehicle using the key.
or X Insert the key into the ignition lock.
The interior motion sensor is switched off automatically.
X To switch off with KEYLESS-GO: unlock
the vehicle using KEYLESS-GO.
or X Press the Start/Stop button on the dash- board. The key must be inside the vehicle. The interior motion sensor is switched off automatically.
Deactivating It is possible to deactivate the interior motion sensor using the on-board computer for the next time the vehicle is locked (Y page 207). If you select Interior motion sensor for the "Adjust display when ignition is switched off" function (Y page 203) in the Vehicle submenu, the Interior motion sensor on Switch off using † / ‡ message appears in the multifunction display after the ignition is switched off. X Press the X button on the multifunction steering wheel. The Interior motion sensor off mes- sage appears in the multifunction display. If you press the W button, the interior motion sensor remains primed.
X Lock the vehicle with the key or, on vehicles with KEYLESS-GO, with the locking button on the door handle.
The interior motion sensor remains deactiva- ted until: Rthe vehicle is unlocked again and Ra door is opened and closed again and Rthe vehicle is locked again To prevent a false alarm, deactivate the inte- rior motion sensor if you lock your vehicle and: Rpeople or animals remain in the vehicle Rthe side windows remain open Ra hinged side window remains open Rthe sliding sunroof/panorama sliding sun-
roof remains open
69
Useful information .............................. 70
Key ....................................................... 70
Doors .................................................... 76
Luggage compartment ....................... 78
Side windows ...................................... 81
Sliding sunroof .................................... 8570 Key
Useful information
i This Owner's Manual describes all mod- els, series and optional equipment for your vehicle that were available at the time of going to press. National variations are pos- sible. Note that your vehicle may not be equipped with all of the functions descri- bed. This is also the case for systems and functions relevant to safety.
i Read the information on qualified special-
ist workshops: (Y page 23).
Key Important safety notes G WARNING If children are left unsupervised in the vehicle, they could: Ropen a door from inside the vehicle at any
time, even if it has been locked
Rstart the vehicle using a key which has been
left in the vehicle
Rrelease the parking brake They could thereby endanger themselves and others. Never leave children unsupervised in the vehicle. Always take the key with you when leaving the vehicle, even if you are only leaving it for a short time. G WARNING If a key ring is too heavy or too large, the weight acting on the key could cause it to turn in the ignition lock or catch on the steering wheel. This could cause the engine to be switched off suddenly. You may lose control of the vehicle and cause an accident. Do not
attach any heavy or large key rings to the key that is inserted in the ignition.
RDo not keep the key:
- with electronic devices, e.g. a mobile
phone or another key
- with metallic objects, e.g. coins or metal
foil inside metallic objects, e.g. a metal case
This can affect the key's functionality.
Do not keep the KEYLESS-GO key in the tem- perature-controlled cup holder. Otherwise, the KEYLESS-GO key will not be recognised. Keep the key away from strong magnetic fields. Otherwise, the remote control function could be affected.
Key functions
: & To lock the vehicle ; F To open/close the tailgate = % To unlock the vehicle X To unlock centrally: press the % but-
ton. If you do not open the vehicle within approximately 40 seconds of unlocking: Rthe vehicle is locked again. Rthe anti-theft system is primed again.
X To lock centrally: press the & button.
The key centrally locks/unlocks: Rthe doors Rthe tailgate Rthe fuel filler flap When unlocking, the turn signals flash once. When locking, they flash three times. If you activate the audible locking confirma- tion function you will hear the following, depending on the date of production of the vehicle: Ran audible signal when locking
or
Rone audible signal when unlocking and
three when locking
The audible signal can be activated and deac- tivated using the on-board computer (Y page 204). When it is dark, the surround lighting also comes on if it is activated in the on-board computer (Y page 202).
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 and unlocking centrally You can start, lock or unlock the vehicle using KEYLESS-GO. To do this, you only need carry the key with you. When you touch the surface of the sensors on the vehicle's outside door handles, KEYLESS-GO establishes a radio connection between the vehicle and the key. When the engine is started and whilst you are driving, KEYLESS-GO also checks whether a valid key is in the vehicle by periodically establishing radio contact. You can combine the KEYLESS-GO functions with the functions of a conventional key. Unlock the vehicle by using KEYLESS-GO, for
Key
71
instance, and lock it using the & button on the key. When locking or unlocking with KEYLESS-GO, the distance between the key and the corre- sponding door handle must not be greater than 1 m.
X To unlock the vehicle: touch the inner
surface of the door handle.
X To lock the vehicle: press locking but-
ton :.
X Convenience closing feature: press lock-
ing button : for an extended period.
If you pull on the handle of the tailgate, only the luggage compartment of the vehicle is unlocked. If the vehicle has been parked for a long time, the sensor surfaces are deactivated automat- ically. In order to unlock the door, pull the door handle. In order to reactivate the sensor surface, switch the ignition on again.
Changing the settings of the locking system You can change the settings of the locking system. This means only the driver's door and the fuel filler flap are unlocked when the vehi- cle is unlocked. This is useful if you frequently travel on your own. X To change the setting: press and hold
down the % and & buttons simulta- neously for approximately six seconds until
72 Key
the battery check lamp flashes twice (Y page 73).
i If the setting of the locking system is
changed within the signal range of the vehi- cle, pressing the & or % button: Rlocks or Runlocks the vehicle
The key now functions as follows: X To unlock the driver's door: press the
% button once.
X To unlock centrally: press the % but-
ton twice.
X To lock centrally: press the & button. The KEYLESS-GO function is changed as fol- lows: 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 sur-
face of the door handle on the front- passenger door or the rear door.
X To lock centrally: press the locking button
on one of the door handles.
There are several ways to turn off the alarm: X To turn the alarm off with the key: press
the % or & button on the key.
or X Insert the key into the ignition lock. or X To deactivate the alarm with KEYLESS- GO: press the Start/Stop button in the igni- tion lock. The key must be in the vehicle.
or X Lock or unlock the vehicle using KEYLESS- GO. The key must be outside the vehicle. If you unlock the vehicle using the emergency key element, the fuel filler flap will not be unlocked automatically. X To unlock the fuel filler flap: insert the
key into the ignition lock.
Removing the emergency key element
X To restore the factory settings: press
and hold down the % and & buttons simultaneously for approximately six sec- onds until the battery check lamp flashes twice (Y page 73).
Emergency key element General notes If the vehicle can no longer be unlocked with the key, use the emergency key element. If you use the emergency key element to unlock and open the driver's door, the anti- theft alarm system will be triggered (Y page 66).
X Push release catch : in the direction of the arrow and at the same time, remove emergency key element ; from the key.
Battery of the key Important safety notes G WARNING Batteries are toxic and contain caustic sub- stances. For this reason, keep batteries out of the reach of children.
Key
73
If a battery has been swallowed, visit a doctor immediately. H Environmental note
Batteries contain pollutants. It is illegal to dispose of them with the household rubbish. They must be collected sep- arately and disposed of in an environmentally responsible recycling system. Dispose of batteries in an environmentally responsible manner. Take discharged batteries to a qualified spe- cialist workshop or to a col- lection point for used batter- ies.
Mercedes-Benz recommends that you have the batteries replaced at a qualified specialist workshop.
Checking the battery
i If the key battery is checked within the
signal reception range of the vehicle, press- ing the & or % button: Rlocks or Runlocks the vehicle
i You can get a battery in any qualified spe-
cialist workshop.
Replacing the battery You require a CR 2025 3 V cell battery. X Take the emergency key element out of the
key (Y page 72).
X Press emergency key element ; into the opening in the key in the direction of the arrow until battery compartment cover : opens. When doing so, do not hold battery compartment cover : shut.
X Remove battery compartment cover :.
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 73).
74 Key
X Repeatedly tap the key against your palm
until battery = falls out.
X Insert the new battery with the positive ter- minal facing upwards. Use a lint-free cloth to do so.
X Make sure that the surface of the battery is free from lint, grease and all other forms of contamination.
X Insert the front tabs of battery compart- ment cover : into the housing and then press to close it.
X Insert emergency key element ; into the
key.
X Check the function of all key buttons on the
vehicle.
Key
75
Problems with the key Problem You cannot lock or unlock the vehicle using the key.
Possible causes/consequences and M Solutions The key battery is discharged or nearly discharged. X Try again to lock/unlock the vehicle using the remote control function of the key. Point the tip of the key at the driver's door handle from close range and press the % or & button.
If this does not work: X Check the key battery (Y page 73) and replace it if necessary
(Y page 73).
X Lock (Y page 78) or unlock (Y page 77) the vehicle using
the emergency key element.
You can no longer lock or unlock the vehicle using KEYLESS-GO.
The key is faulty. X Lock (Y page 78) or unlock (Y page 77) the vehicle using
the emergency key element.
X Have the key checked at a qualified specialist workshop. KEYLESS-GO is in standby mode because the vehicle has not been unlocked for an extended period. X Pull the door handle twice and then insert the key into the igni-
tion lock.
There is interference from a powerful source of radio waves. X Lock/unlock the vehicle using the remote control function of the key. Point the tip of the key at the driver's door handle from close range and press the % / & button.
There is a fault with KEYLESS-GO. X Lock/unlock the vehicle using the remote control function of the key. Point the tip of the key at the driver's door handle from close range and press the % / & button.
X Have KEYLESS-GO checked at a qualified specialist workshop. If this does not work: X Check the key battery (Y page 73) and replace it if necessary
(Y page 73).
X Lock (Y page 78) or unlock (Y page 77) the vehicle using
the emergency key element.
You have lost a key.
X Have the key deactivated at a qualified specialist workshop. X Report the loss immediately to the vehicle insurers. X If necessary, have the locks changed as well.
76 Doors
Problem You have lost the emer- gency key element.
The engine cannot be started using the key.
Possible causes/consequences and M Solutions X Report the loss immediately to the vehicle insurers. X If necessary, have the locks changed as well. 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.
If this does not work: X Check the starter battery and charge it if necessary
(Y page 303).
or X Jump-start the vehicle (Y page 304). or X Consult a qualified specialist workshop. A door is open. Therefore, the key 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 key in the ignition lock.
The engine cannot be started using KEYLESS- GO. The key is in the vehicle.
Unlocking and opening the doors from the inside 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 61). If the vehicle has previously been locked with the key or with KEYLESS-GO, opening a door from the inside will trigger the anti-theft alarm system. Switch off the alarm (Y page 66).
Doors Important safety notes G WARNING If children are left unsupervised in the vehicle, they could: Ropen a door from inside the vehicle at any
time, even if it has been locked
Rstart the vehicle using a key which has been
left in the vehicle
Rrelease the parking brake They could thereby endanger themselves and others. Never leave children unsupervised in the vehicle. Always take the key with you when leaving the vehicle, even if you are only leaving it for a short time.
X Pull door handle ;.
If the door is locked, locking knob : pops up. The door is unlocked and can be opened.
Centrally locking and unlocking the vehicle from the inside You can centrally lock or unlock the vehicle from the inside. The buttons are located on both front doors.
X To unlock: press button :. X To lock: press button ;.
If the front-passenger door is closed, the vehicle locks.
You cannot unlock the vehicle centrally from the inside if the vehicle has been locked with the key or KEYLESS-GO. The central locking/unlocking button does not lock or unlock the fuel filler flap. For all countries except the United King- dom: you can open a door from inside the vehicle even if it has been locked. Only for the United Kingdom: if the vehicle has been locked with the key or with KEY- LESS-GO, the double lock function is activa- ted as standard. It is then not possible to open the doors from inside the vehicle. Deactivate the interior motion sensor (Y page 68) before you lock the vehicle. The doors can then be opened from the inside after the vehicle has been locked from the outside.
Doors
77
If the vehicle has been locked using the lock- ing 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 from
the inside is unlocked if only the driver's door had been previously unlocked.
Automatic locking feature The vehicle is locked automatically when the ignition is switched on and the wheels are turning. You could therefore be locked out if: Rthe vehicle is being pushed. Rthe vehicle is being towed. Rthe vehicle is being tested on a dynamom-
eter.
You can switch the automatic locking func- tion on and off using the on-board computer (Y page 204).
Unlocking the driver's door (emer- gency key element) If the vehicle can no longer be unlocked with the key, use the emergency key element. If you use the emergency key element to unlock and open the driver's door, the anti- theft alarm system will be triggered (Y page 66). X Take the emergency key element out of the
key (Y page 72).
X Insert the emergency key element into the lock of the driver's door as far as it will go.
78
Luggage compartment
X Press down the locking knob of the driver's door by reaching in through the open rear door.
i Make sure that you have the key on your person and that it has not been left in the vehicle.
X Close the rear door on the driver’s side. X Make sure that the doors and the tailgate
are locked.
i If you lock the vehicle as described above,
the fuel filler flap is not locked. The anti- theft alarm system is not primed.
Luggage compartment Important safety notes G WARNING If the engine is running and the tailgate is open, exhaust gases can enter the vehicle interior. This could result in poisoning. There- fore, make sure that the tailgate is always closed when the engine is running.
! The tailgate swings upwards and to the rear when opened. Therefore, make sure that there is sufficient clearance above and behind the tailgate.
i Tailgate opening dimensions
(Y page 346).
Do not leave the key in the luggage compart- ment. You could otherwise lock yourself out. Vehicles without the EASY-PACK tail- gate: the tailgate can be: Ropened and closed manually from outside Ropened manually from inside For vehicles with the EASY-PACK tailgate you can: Rclose the tailgate manually from outside Ropen and close the tailgate automatically
from outside
Ropen and close the tailgate automatically
from inside
X Turn the emergency key element anti- clockwise as far as it will go to position 1 and hold it in this position.
i On right-hand-drive vehicles, turn the
emergency key element clockwise.
X Pull the door handle beyond the first resist-
ance. The locking knob pops up. The door is unlocked.
X Turn the emergency key element back and
remove it.
X Pull the door handle again. X Insert the emergency key element into the
key.
Locking the vehicle If the vehicle can no longer be locked with the key, you can lock it by taking the following steps. X Close the front-passenger door, the rear door on the front-passenger side and the tailgate.
X Open the driver’s door and the rear door on
the driver’s side.
X Press the locking button on the driver’s
door (Y page 77). The locking knobs in the front-passenger door and in the rear doors drop down.
X Press down the locking knobs in the front- passenger and rear doors manually, if nec- essary (Y page 76).
X Close the driver's door from the outside.
Luggage compartment
79
Ropen the tailgate manually from inside Rlimit the opening angle of the tailgate
Opening/closing from the outside Opening
X Press the % button on the key. X Pull handle :. X Raise the tailgate. Vehicles with the EASY-PACK tailgate: if you pull handle : and then release it, the tailgate opens automatically.
Closing G WARNING Make sure that nobody can become trapped as you close the tailgate.
X Pull the tailgate down using recess :. X Allow the tailgate to drop into the lock. X Lock the vehicle if necessary with
the & button on the key or with KEY- LESS-GO.
i If a KEYLESS-GO key is detected in the
luggage compartment, the tailgate will not lock.
Opening/closing automatically from the outside Important safety notes G WARNING Monitor the tailgate opening and closing pro- cedures to make sure that nobody can become trapped. To stop the opening or clos- ing procedure, press the closing button on the tailgate again or pull the handle on the outside of the tailgate.
! The tailgate swings upwards and to the rear when opened. Therefore, make sure that there is sufficient clearance above and behind the tailgate.
i Tailgate opening dimensions
(Y page 346).
Opening the tailgate automatically You can open the tailgate automatically with the key or the handle in the tailgate. X Press and hold the F button on the key
until the tailgate opens.
or X If the tailgate is unlocked, pull the handle
and let it go again immediately.
80
Luggage compartment
Closing the tailgate automatically
Closing button and locking button (example: vehi- cle with the EASY-PACK tailgate and KEYLESS-GO) X To close: press closing button : on the
tailgate.
or X Press and hold the F button on the key
until the tailgate closes.
Vehicles with the EASY-PACK system tailgate and KEYLESS-GO: you can simultaneously close and lock the tailgate. X Press locking button ; on the tailgate. If a KEYLESS-GO key is detected outside the vehicle, the tailgate closes and locks. i In order to open and close the tailgate, the key must be not be inserted in the ignition lock. If the tailgate touches an object while clos- ing, the closing procedure is interrupted and the tailgate reopens.
i If a KEYLESS-GO key is detected in the
luggage compartment, the tailgate will not lock.
ing procedure, press or pull the tailgate's remote operating button from the driver's seat again.
! The tailgate swings upwards and to the rear when opened. Therefore, make sure that there is sufficient clearance above and behind the tailgate.
i Tailgate opening dimensions
(Y page 346).
Opening and closing
You can open and close the tailgate from the driver's seat when the vehicle is stationary and unlocked. X To open: pull remote operating switch :
for the tailgate until the tailgate opens.
X To close: turn the key to position 1 or 2 in
the ignition lock.
X Press remote operating switch for tail-
gate : until the tailgate closes.
i If the tailgate touches an object while
