
1 Contents
IntroductionProduct information  .......................... 7
Operator’s manual  ............................. 8
Where to find it  ................................ 13
Reporting Safety Defects  ................ 15Instruments and controlsInstruments and controls  ............... 18
Door control panel  ....................... 20
Overhead control panel  ............... 21
Dashboard  ..................................... 22
Center console  .............................. 24OperationVehicle keys  ...................................... 28
Start lock-out  .................................... 30
General notes on the 
central locking system  ............... 30
Central locking system  ................... 31
Radio frequency and 
infrared remote control  ............... 31
Locking and unlocking ................ 33Choosing global or selective 
mode on remote control  ............. 33
Opening the trunk  ....................... 34
Opening and closing windows 
and sliding / pop-up roof 
from outside  ................................. 35
Panic button  ................................. 36
Mechanical keys  .......................... 36
Doors  ................................................. 37
Central locking switch .................... 39
Automatic central locking .............. 40
Emergency unlocking 
in case of accident  ...................... 40
Trunk ..................................................41
Trunk lid emergency release  ........ 43
Trunk lid emergency release  ........ 44
Trunk lid release switch  ................ 45
Trunk lamp ....................................... 45
Antitheft alarm system ................... 46
Tow-away alarm  ............................... 47
Easy-entry/exit feature  .................. 48
Front seat adjustment ..................... 49
Removal and installation of 
front seat head restraints  .......... 55Multicontour seat  ............................ 57
Heated seats  ..................................... 58
Rear seat head restraints ................ 60
Seat belts and integrated 
restraint system  .......................... 63
Seat belts ........................................... 63
Seat belt nonusage 
warning system  ........................... 64
BabySmart
TM airbag 
deactivation system  .................... 70
Supplemental Restraint 
System (SRS)  ............................... 71
Emergency tensioning 
retractor (ETR) ............................. 72
Airbags  .............................................. 73
Safety guidelines for the seat 
belt, emergency tensioning 
retractor and airbag .................... 81
Infant and child 
restraint systems ......................... 83
Steering wheel adjustment 
(manual)  ....................................... 88
Steering wheel adjustment 
(electrical)  .................................... 89
Rear view mirrors  ............................ 90
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23 Instruments and controls
Te ch n i c a l
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hints Car care Index 1Hood lock release, see page 318
2Parking brake pedal, see page 260
3Steering wheel adjustment (manual), see page 88
4Parking brake release, see page 260
5Exterior lamp switch, see page 143
6Combination switch, see page 148
7Exterior mirror adjustment switch, see page 91
8Headlamp washer button, see page 147
9Cruise control switch, see page 27210Multifunction steering wheel, see page 102
Horn (with electronic key in starter switch 
position 1 or 2)
11Instrument cluster, see page 98
12Voice recognition system switch, see separate 
operating instructions
13Starter switch, see page 246
14Glove box lid release, see page 208
15Glove box lock, see page 208
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26 Contents - Operation
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
OperationVehicle keys  ...................................... 28
Start lock-out  .................................... 30
General notes on the 
central locking system  ............... 30
Central locking system  ................... 31
Radio frequency and 
infrared remote control  ............... 31
Locking and unlocking ................ 33
Choosing global or selective 
mode on remote control  .............. 33
Opening the trunk  ....................... 34
Opening and closing windows 
and sliding / pop-up roof 
from outside  .................................. 35
Panic button  .................................. 36
Mechanical keys  ........................... 36
Doors .................................................. 37
Central locking switch  .................... 39
Automatic central locking  .............. 40
Emergency unlocking 
in case of accident  ...................... 40
Trunk  ................................................. 41Trunk lid emergency release  ........ 43
Trunk lid emergency release  ........ 44
Trunk lid release switch  ................ 45
Trunk lamp ....................................... 45
Antitheft alarm system ................... 46
Tow-away alarm  ............................... 47
Easy-entry/exit feature  .................. 48
Front seat adjustment ..................... 49
Removal and installation of 
front seat head restraints  .......... 55
Multicontour seat  ............................ 57
Heated seats  ..................................... 58
Rear seat head restraints  ............... 60
Seat belts and integrated 
restraint system  .......................... 63
Seat belts  .......................................... 63
Seat belt nonusage 
warning system  .......................... 64
BabySmart
TM airbag 
deactivation system  ................... 70
Supplemental Restraint 
System (SRS)  ................................ 71
Emergency tensioning 
retractor (ETR)  ............................ 72Airbags  .............................................. 73
Safety guidelines for the seat 
belt, emergency tensioning 
retractor and airbag .................... 81
Infant and child 
restraint systems ......................... 83
Steering wheel adjustment 
(manual)  ....................................... 88
Steering wheel adjustment 
(electrical)  .................................... 89
Rear view mirrors  ............................ 90
Instrument cluster  ........................... 98
Multifunction steering wheel, 
multifunction display  ............... 102
Trip and main odometer
and sub menu  ............................ 106
Audio systems  ................................ 108
Radio  ............................................ 108
CD player  ..................................... 109
Cassette player  ............................110
Telephone  ......................................... 111
Navigation system ...........................116
Trip computer  ..................................117
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30 Central locking system
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Start lock-out
Important!
Removing the electronic key from the starter switch 
activates the start lock-out. The engine cannot be 
started.
Inserting the electronic key in the starter switch 
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 starter switch, 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 357, or synchronize the electronic key, see 
page 359.
•Use the mechanical key to unlock the vehicle. To 
start engine, insert the electronic key in the starter 
switch. There could be a slight delay until the 
electronic key can be turned in the starter switch.
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 
starter switch or press buttonŒ or‹ on the 
electronic key.
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31 Central locking system
Te ch n i c a l
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 357 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 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 ‹, 
seepage35.
With vehicle centrally locked, the trunk can also be 
opened by using the remote control.
If the electronic key is inserted in starter switch, 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 357 for changing 
batteries if it does not light up briefly)
3PANIC button
4Transmitter eye
5Locking tab for mechanical key
P 80.35-2032-26
24
3
5
1
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33 Central locking system
Te ch n i c a l
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 41.
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 or trunk is opened, the electronic 
key is not inserted in the starter switch, 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 
they do not blink three times, a door or trunk is not 
properly closed.
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 357 and 359.
Choosing global or selective mode on remote control
Press and hold transmit buttons‹ andŒ 
simultaneously for five seconds to reprogram the 
remote control. Battery check lamp will blink two times 
indicating the completed mode change.
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36 Central locking system
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Panic button
To activate press and hold button (1) for at least one 
second. An audible alarm and blinking exterior lamps 
will operate for approximately 3 minutes.
To deactivate press button (1) again, or insert electronic 
key in starter switch.Note:
For operation in the USA only: This device complies 
with Part 15 of the FCC Rules. Operation is subject to 
the following two conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received, 
including interference that may cause undesired 
operation.
Any unauthorized modification to this device could void 
the user’s authority to operate the equipment.
Mechanical keys
The mechanical keys work only in driver’s door, trunk, 
and glove box locks.
Notes:
The mechanical key does not operate the central locking 
system or antitheft alarm system.
The fuel filler flap cannot be locked or unlocked with 
the mechanical key.
If the fuel filler flap cannot be opened, see page 360.
P 80.35-2035-26
1
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38 Central locking system
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
If the vehicle has previously been locked from the 
outside, opening a door from the inside will trigger the 
alarm. When opening a front door while the central 
locking system is in the:
•selective unlocking mode, only that individual door 
is unlocked. The remaining doors, the trunk and 
fuel filler flap remain locked.
•global unlocking mode, all doors, the trunk and fuel 
filler flap are unlocked.
Notes:
In case of a malfunction in the central locking system 
the doors can be locked and unlocked individually.
To lock, push down lock buttons or turn mechanical key 
in driver’s door lock to position 3. In addition lock the 
trunk.To unlock, pull inside door handles or turn mechanical 
key in driver’s door lock to position 2.
Rear doors can only be opened from inside by first 
pulling up the door lock button.
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 
starter switch or press buttonŒ or‹ on the 
electronic key.
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