
1 Contents 
IntroductionProduct information  .......................... 7
Operator’s manual  ............................. 8
Where to find it  ................................ 13
Reporting Safety Defects  ................ 15Instruments and controlsInstruments and controls  ............... 18
Center console  .............................. 20
Overhead control panel  ............... 21OperationVehicle keys  ...................................... 24
Start lock-out  .................................... 26
General notes on the 
central locking system  ............... 26
Central locking system  ................... 27
Radio frequency and 
infrared remote control  ............... 27
Opening the trunk  ....................... 30
Opening and closing windows 
and sliding/pop-up roof 
from outside  .................................. 31Panic button  ................................. 32
Mechanical keys  .......................... 32
Doors  ................................................. 33
Central locking switch .................... 35
Automatic central locking .............. 36
Emergency unlocking 
in case of accident  ...................... 36
Trunk ................................................. 37
Trunk lamp ....................................... 39
Trunk lid release switch  ................ 40
Trunk lid emergency release  ......... 41
Trunk lid emergency release  ........ 42
Antitheft alarm system ................... 43
Tow-away alarm  ............................... 44
Power seats front  ............................. 45
Front seat head restraints ...............51
Rear seat head restraints  ............... 52
Multicontour seat  ............................ 53
Seat heater ........................................ 54
Seat ventilation ................................ 57
Seat belts and 
integrated restraint system  ....... 59
Seat belts  .......................................... 59Seat belt nonusage 
warning system  ........................... 60
BabySmart
TM airbag 
deactivation system  .................... 66
Self-test BabySmart
TM without 
special child seat installed  ......... 66
Supplemental restraint system 
(SRS)  ............................................. 67
Emergency tensioning retractor 
(ETR)  ............................................. 68
Airbags  .............................................. 69
Safety guidelines for the seat belt, 
emergency tensioning retractor 
and airbag  .................................... 75
Infant and child 
restraint systems ......................... 77
Steering wheel adjustment  ............ 81
Rear view mirrors  ............................ 82
Instrument cluster  ........................... 86
Multifunction steering wheel, 
multifunction display  ................. 92
Trip and main odometer, FSS 
and engine oil level display ....... 96
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4 Contents 
AIRBAG OFF indicator lamp .....239
Malfunction and warning 
messages in the 
multifunction display  ...............240
DISPLAY DEFECTIVE  ................ 241
BATTERY / ALTERNATOR .........242
ABS-SYSTEM  ...............................243
BRAKE ASSIST  ...........................243
BRAKE LINING WEAR  ..............244
BRAKE FLUID  .............................244
PARKING BRAKE  .......................245
ENGINE FAN  ...............................245
COOLANT (coolant level)  ..........246
COOLANT TEMP.  ........................247
LIGHTING SYSTEM  ....................248
LIGHT SENSOR ...........................249
REMOVE KEY  .............................249
STEERING GEAR OIL .................250
ENGINE OIL LEVEL  ................... 251
WASHER FLUID ..........................252
ELEC. STABIL. PROG. 
(Electronic stability program)  ..253
TELE AID  .....................................253
Practical hintsFirst aid kit  ..................................... 256
Stowing things in the vehicle ...... 256
Fuses  ............................................... 257
Hood  ................................................ 259
Checking engine oil level ............. 262
Automatic transmission 
fluid level  ................................... 263
Coolant level ................................... 263
Adding coolant  ........................... 264
Windshield and headlamp 
washer system  .......................... 265
Windshield and headlamp 
washer fluid mixing ratio  ........ 265
Spare wheel, vehicle tools, 
storage compartment  ............... 266
Vehicle jack  .................................... 267
Wheels  ............................................ 268
Tire replacement  ....................... 268
Rotating wheels  ......................... 269
Spare wheel .................................... 270
Spare wheel bolts  ...................... 270Spare wheel  .................................... 271
Changing wheels  ...........................273
Tire inflation pressure  ..................278
Battery  .............................................280
Jump starting  ..................................282
Towing the vehicle .........................285
Transmission selector lever, 
manually unlocking ..................287
Exterior lamps  ................................288
Headlamp assembly ...................289
Taillamp assemblies  ..................292
Changing batteries 
in the electronic main key  ......294
Synchronizing 
remote control  ............................296
Emergency engine shut-down  .....296
Rear seat cushion  ..........................297
Emergency operation of 
sliding / pop-up roof .................298
Manual release for 
fuel filler flap .............................299
Replacing wiper blade insert  .......300
Roof rack  .........................................302
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22 Contents – Operation
Technical
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
OperationVehicle keys  ...................................... 24
Start lock-out  .................................... 26
General notes on the 
central locking system  ............... 26
Central locking system  ................... 27
Radio frequency and 
infrared remote control  ............... 27
Opening the trunk  ....................... 30
Opening and closing windows 
and sliding/pop-up roof 
from outside  .................................. 31
Panic button  .................................. 32
Mechanical keys  ........................... 32
Doors .................................................. 33
Central locking switch  .................... 35
Automatic central locking  .............. 36
Emergency unlocking 
in case of accident  ...................... 36
Trunk  ................................................. 37
Trunk lamp  ....................................... 39
Trunk lid release switch  ................. 40
Trunk lid emergency release  ......... 41Trunk lid emergency release  ........ 42
Antitheft alarm system ................... 43
Tow-away alarm  ............................... 44
Power seats front  ............................. 45
Front seat head restraints ...............51
Rear seat head restraints  ............... 52
Multicontour seat  ............................ 53
Seat heater ........................................ 54
Seat ventilation ................................ 57
Seat belts and 
integrated restraint system  ....... 59
Seat belts  .......................................... 59
Seat belt nonusage 
warning system  .......................... 60
BabySmart
TM airbag 
deactivation system  ................... 66
Self-test BabySmart
TM without 
special child seat installed  ......... 66
Supplemental restraint system 
(SRS)  ............................................. 67
Emergency tensioning retractor 
(ETR) ............................................. 68
Airbags .............................................. 69Safety guidelines for the seat belt, 
emergency tensioning retractor 
and airbag  .................................... 75
Infant and child 
restraint systems ......................... 77
Steering wheel adjustment  ............ 81
Rear view mirrors  ............................ 82
Instrument cluster  ........................... 86
Multifunction steering wheel, 
multifunction display  ................. 92
Trip and main odometer, FSS 
and engine oil level display ....... 96
Audio systems  .................................. 97
Radio  .............................................. 97
CD player  ....................................... 98
Cassette player  ............................. 99
Telephone  ........................................ 100
Telephone book  .......................... 100
Redialing  ..................................... 102
Incoming call  .............................. 104
Navigation system .......................... 105
Trip computer  ................................. 106
Malfunction message memory  .... 108
Individual settings ..........................110
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24 Central locking system
Technical
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Ve h i c l e   k e y s
Included with your vehicle are 2 electronic keys with 
integrated radio frequency and infrared remote controls 
plus removable mechanical key.
The locking tabs for the mechanical key portion of the 
two electronic keys are a different color to help 
distinguish it.
Wa r n i n g !
When leaving the vehicle always remove the 
electronic key from the steering lock, and lock 
your vehicle. Do not leave children unattended in 
the vehicle, or with access to an unlocked vehicle. 
Unsupervised use of vehicle equipment may cause 
serious personal injury.
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25 Central locking system
Technical
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Electronic key
The electronic key has an integrated radio frequency 
and infrared remote control, plus removable mechanical 
key.
The remote control (1) operates all locks on the vehicle.
The mechanical key (2) works only in the driver’s door, 
trunk, and storage compartment locks.When using the mechanical key (2) for lock operations, 
it can be removed by sliding it out of the remote control. 
To do so, move locking tab (3) to the right and slide the 
mechanical key (2) in direction of arrow(4).
The remote control transmitter is located in the 
electronic key.
The infrared receivers are located in the front door 
handles.
Note:
Remove the mechanical key from the electronic key 
when using valet parking service. To prevent access to 
trunk or storage compartments lock them separately 
and retain the mechanical key.
See page 37 for separate locking of trunk and page 163 
for locking of glove box.
Obtaining replacement keys
Your vehicle is equipped with a theft deterrent locking 
system requiring a special key manufacturing process. 
For security reasons, replacement keys can only be 
obtained from your authorized Mercedes-Benz Center.
P80.35-2031-26
1
3
4
2
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26 Central locking system
Technical
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Start lock-out
Important!
Removing the electronic key from the steering lock 
activates the start lock-out. The engine cannot be 
started.
Inserting the electronic key in the steering lock 
deactivates the start lock-out.
Note:
In case the engine cannot be started (vehicle’s battery is 
in order), the system is not operational. Contact an 
authorized Mercedes-Benz Center or call 1-800-FOR-
MERCedes (in the USA), or 1-800-387-0100 (in Canada).General notes on the central locking system
If the electronic key is inserted in the steering lock, the 
vehicle cannot be locked or unlocked with the remote 
control.
If the vehicle cannot be locked or unlocked:
•Aim transmitter eye at a receiver of either front door 
handle. Check the batteries of the electronic key, 
see page 294 or to synchronize the remote control, 
see page 296.
•Use the mechanical key to unlock the vehicle. To 
start engine, insert the electronic key in the 
steering lock. There could be a slight delay until the 
electronic key can be turned in the steering lock.
Important!
When unlocking the driver’s door with the mechanical 
key, the exterior lamps will flash and the alarm will 
sound.
To cancel the alarm, insert the electronic key in the 
steering lock or press buttonŒ or‹ on the 
electronic key.
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27 Central locking system
Technical
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Central locking system
Radio frequency and infrared remote control
The electronic key has an integrated radio frequency 
and infrared remote control.
Due to the extended operational range of the remote 
control, it could be possible to unintentionally lock or 
unlock the vehicle by pressing the transmit button. If 
one of the transmit buttons is pressed, the battery check 
lamp lights up brief ly – indicating that the batteries are 
in order. See page 294 for checking batteries.
The vehicle doors, trunk and fuel filler flap can be 
centrally locked and unlocked via remote control.
Opening and closing the windows and sliding / pop-up 
roof remotely can only be done with the infrared portion 
of the remote control. Aim transmitter eye at a 
receiver (6 or 7), press and hold transmit button Œ 
or ‹.
With vehicle centrally locked, the trunk can also be 
opened by using the remote control.
If the electronic key is inserted in steering lock, the 
vehicle cannot be locked or unlocked, and the trunk lid 
cannot be opened with the remote control.1Transmit button
‹ Locking
Œ Unlocking
Š Opening trunk (if not separately locked)
2Lamp for battery check (see page 294 for changing 
batteries if it does not light up briefly)
3PA N I C   b u t t o n
4Transmitter eye
5Locking tab for mechanical key
P80.35-2032-26
24
3
5
1
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29 Central locking system
Technical
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Locking and unlocking with remote control
Unlocking:
Press transmit button Œ. All turn signal lamps blink 
once to indicate that the vehicle is unlocked.
The remote control can be programmed for two kinds of 
unlocking modes (see below):
Selective unlocking mode –
Press transmit button Œ  once to unlock driver’s 
door and fuel filler flap.
Press transmit button Œ twice to unlock all doors, 
fuel filler flap, and trunk.
Global unlocking mode –
Press transmit button Œ  once to unlock all doors, 
fuel filler flap, and trunk.
Notes:
If the trunk was previously locked separately, it will 
remain locked, see page 37.
The presently active unlocking mode (selective or 
global) can only be determined by unlocking the vehicle 
with the remote control (see below for changing mode).If within 40 seconds of unlocking with the remote 
control, neither door nor trunk is opened, the electronic 
key is not inserted in the steering lock, or the central 
locking switch is not activated, the vehicle will 
automatically lock.
Locking:
Press transmit button ‹ once. All turn signal lamps 
blink three times to indicate that the vehicle is locked.
If the turn signal lamps do not blink, a door or trunk is 
not closed properly.
Note:
If the vehicle cannot be locked or unlocked by pressing 
the transmit button, then it may be necessary to change 
the batteries in the electronic key (if ok, battery check 
lamp in electronic key will light briefly when pressing 
transmit button) or to synchronize the remote control, 
see pages 294 and 296.
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