
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  .................................... 31
General notes on the 
central locking system  ............... 32
Central locking system  ................... 33
Radio frequency and 
infrared remote control  ............... 33
KEYLESS-GO ................................. 36Opening and closing windows 
and sliding / pop-up roof 
from outside  ................................. 43
Panic button  ................................. 45
Mechanical keys  .......................... 45
Doors ................................................. 46
Power closing assist for 
doors and trunk lid  .................... 48
Central locking switch .................... 48
Automatic central locking .............. 50
Emergency unlocking in 
case of accident  .......................... 50
Trunk ..................................................51
Trunk lamp ....................................... 54
Trunk lid release switch  ................ 55
Trunk lid release/close switch  ...... 56
Trunk lid emergency release  ........ 59
Antitheft alarm system ................... 60
Tow-away alarm  ................................ 61
Easy-entry/exit feature  .................. 63
Front seat adjustment ..................... 64
Removal and installation of 
front seat head restraints .......... 68
Lumbar support  ............................... 69Multicontour backrest ..................... 69
Seat heater  ........................................ 71
Seat ventilation system  ................... 74
Rear seat head restraints ................ 76
Power head restraints, rear  ............ 77
Power seats, rear .............................. 78
Power seats, setting passenger 
seat position from rear ............... 80
Seat belts and integrated 
restraint system  .......................... 81
Seat belts ........................................... 81
Seat belt nonusage 
warning system  ........................... 82
BabySmart
TM airbag 
deactivation system  .................... 88
Self-test BabySmart
TM without 
special child seat installed  ......... 88
Supplemental Restraint 
System (SRS)  ............................... 89
Emergency tensioning 
retractor (ETR) ............................. 90
Airbags .............................................. 91 

23 Instruments and controls
Te ch n i c a l
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hints Car care Index 1Parking brake pedal, see page 246
2Hood lock release, see page 339
3Parking brake release, see page 246
4Exterior lamp switch, see page 158
5Easy-entry / exit feature, see page 63
Steering wheel adjustment, see page 102
6Headlamp washer button, see page 161
7Combination switch, see page 162
8Cruise control switch, see page 258, or
Distronic (DTR) switch, see page 2619Multifunction steering wheel, see page 118
Horn (with electronic key in starter switch 
position 1 or 2)
Airbag, see page 91
10Instrument cluster, see page 112
11Voice recognition system switch, see separate 
operating instructions
12Starter switch, see page 230
13Glove box lock, see page 197
14Glove box lid release, see page 197 

25 Instruments and controls
Te ch n i c a l
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hints Car care Index 10COMAND system, see separate operating 
instructions
11Automatic climate control, see page 166 
Rear window defroster switch, see page 183
12Ashtray, see page 204
Lighter, see page 206
13Start-/Stop button
Starter switch for KEYLESS-GO only, see page 23214Lower storage space, see page 198
15Automatic transmission, see page 237
16AIRBAG OFF indicator lamp, see page 308
17Distronic (DTR) – switch for distance warning 
function, see page 273.
18Distronic (DTR) – thumbwheel for setting distance, 
see page 273. 

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  .................................... 31
General notes on the 
central locking system  ............... 32
Central locking system  ................... 33
Radio frequency and 
infrared remote control  ............... 33
KEYLESS-GO ................................. 36
Opening and closing windows 
and sliding / pop-up roof 
from outside  .................................. 43
Panic button  .................................. 45
Mechanical keys  ........................... 45
Doors .................................................. 46
Power closing assist for 
doors and trunk lid  ..................... 48
Central locking switch  .................... 48
Automatic central locking  .............. 50
Emergency unlocking in 
case of accident  ........................... 50
Trunk ................................................. 51
Trunk lamp  ....................................... 54Trunk lid release switch  ................ 55
Trunk lid release/close switch  ...... 56
Trunk lid emergency release  ........ 59
Antitheft alarm system ................... 60
Tow-away alarm  ................................ 61
Easy-entry/exit feature  .................. 63
Front seat adjustment ..................... 64
Removal and installation of 
front seat head restraints .......... 68
Lumbar support  ............................... 69
Multicontour backrest  .................... 69
Seat heater ......................................... 71
Seat ventilation system  ................... 74
Rear seat head restraints  ................ 76
Power head restraints, rear  ........... 77
Power seats, rear  ............................. 78
Power seats, setting passenger 
seat position from rear  .............. 80
Seat belts and integrated 
restraint system  ...........................81
Seat belts  ...........................................81
Seat belt nonusage 
warning system  .......................... 82BabySmart
TM airbag 
deactivation system  .................... 88
Self-test BabySmart
TM without 
special child seat installed  ......... 88
Supplemental Restraint 
System (SRS)  ............................... 89
Emergency tensioning 
retractor (ETR) ............................. 90
Airbags .............................................. 91
Safety guidelines for the 
seat belt, emergency 
tensioning retractor 
and airbag  .................................... 97
Infant and child 
restraint systems ......................... 99
Steering wheel adjustment  .......... 102
Rear view mirrors  .......................... 103
Memory function  ........................... 108
Key dependent 
memory settings  ........................ 111
Instrument cluster  ..........................112
Multifunction steering wheel, 
multifunction display  ................118 

31 Central locking system
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Start lock-out
Important!
Operating with electronic key:
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.
Operating with KEYLESS-GO:
Turning off the engine with the start- / stop button on 
the gear selector lever activates the start lock-out. For 
turning off the engine with KEYLESS-GO, see page 236.
Starting the engine with the start- / stop button 
deactivates the start lock-out, if a valid KEYLESS-GO-
card is recognized inside the vehicle. For starting the 
engine with KEYLESS-GO, see page 236. The engine 
cannot be started with a KEYLESS-GO-card outside the 
vehicle.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). 

32 Central locking system
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
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 on either front 
door handle. Check the batteries of the electronic 
key, see page 371, or synchronize the remote 
control, see page 373.
•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.
•Vehicles with KEYLESS-GO only:
A KEYLESS-GO-card must be recognized by the 
system as being outside the vehicle to enable the 
vehicle to be locked or unlocked (maximum distance 
between card and doors or trunk is approx. 3 ft. 
(1 m). Check the location of the KEYLESS-GO-card, 
see page 36. Check the batteries of the KEYLESS-
GO-card, see page 374. The trunk lid will open 
automatically if a KEYLESS-GO card is detected in 
the trunk, see page 36.Note:
If neither the remote control nor KEYLESS-GO system 
functions, use the mechanical key to unlock or lock 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; or with the optional KEYLESS-GO-
system, when carrying a KEYLESS-GO-card, by grasping 
a door handle or pressing the start- / stop button on the 
gear selector lever. 

33 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 briefly – indicating that the batteries are 
in order. See page 371 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 and switching on the driver’s seat ventilation 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 Œor ‹, seepage43.
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 371 for changing 
batteries if it does not light up briefly)
3PANIC button
4Transmitter eye
5Locking tab for mechanical key
P80.35-2032-26
24
3
5
1 

35 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 o nce  to un lock  dr iver’s  d oor 
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 51.
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 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 371 and 373.
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.