
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 and closing windows 
and sliding / pop-up roof 
from outside .................................  34
Panic button .................................  35
Mechanical keys ..........................  35
Doors .................................................  36
Central locking switch....................  38
Automatic central locking..............  40
Emergency unlocking 
in case of accident ......................  40
Trunk.................................................. 41
Trunk lid emergency release  .......  43
Antitheft alarm system...................  44
Tow-away alarm ...............................  46
Easy-entry/exit feature ..................  47
Front seat adjustment.....................  48
Removal and installation of 
front seat head restraints ..........  54
Front seat backrest 
- locking and unlocking .............  56
Heated seats .....................................  58
Rear seat head restraints ...............  60Seat belts and integrated 
restraint system ..........................  62
Seat belts ...........................................  62
Seat belt nonusage 
warning system ...........................  63
BabySmart
TM airbag 
deactivation system ....................  69
Self-test BabySmart
TM without 
special child seat installed ........  69
Supplemental Restraint 
System (SRS)................................  70
Emergency tensioning 
retractor (ETR).............................  71
Airbags ..............................................  72
Safety guidelines for the seat 
belt, emergency tensioning 
retractor and airbag....................  80
Infant and child 
restraint systems.........................  82
Steering wheel adjustment 
(manual) .......................................  87
Steering wheel adjustment 
(electrical) ....................................  88
Rear view mirrors ............................  89
Instrument cluster ...........................  96 

4 Contents
LIGHTING SYSTEM .................... 300
LIGHT SENSOR........................... 302
DOOR............................................ 302
TRUNK OPEN ............................. 303
HOOD ........................................... 303
TELEPHONE – FUNCTION........ 304
TELE AID ..................................... 304
WASHER FLUID.......................... 305
RESTRAINT SYSTEM ................. 306
KEY ............................................... 306
FUEL RESERVE .......................... 307
UNDERVOLTAGE ........................ 307
STEERING WHEEL ADJUST. ..... 308
Practical hintsFirst aid kit......................................  310
Stowing things in the vehicle ......  311
Fuses ................................................  311
Hood .................................................  315
Automatic transmission 
fluid level ...................................  317
Adding engine oil...........................  318
Coolant level ...................................  319Adding coolant ............................ 319
Windshield and headlamp 
washer system ..........................  320
Spare wheel, storage 
compartment .............................  321
Vehicle tools and air pump ..........  322
Vehicle jack ....................................  323
Wheels ............................................  324
Tire replacement........................  324
Rotating wheels .........................  325
Spare wheel ....................................  326
Changing wheels ...........................  327
Inflating the collapsible 
spare tire .....................................  333
Storing spare wheel in 
wheel well ...................................  334
Tire inflation pressure .................  335
Battery.............................................  336
Jump starting..................................  338
Towing the vehicle ........................  341
Transmission selector lever, 
manually unlocking ..................  344
Exterior lamps ...............................  345
Replacing bulbs .........................  345Changing batteries in the 
electronic main key ..................  351
Synchronizing remote 
control .......................................... 353
Emergency engine shut-down ..... 353
Fuel filler flap, manual release ... 354
Replacing wiper blade insert ....... 356
Roof rack ......................................... 357
Vehicle careCleaning and care of 
the vehicle.................................. 360
Power washer..............................  361
Tar stains .....................................  361
Paintwork, painted body 
components .................................  361
Engine cleaning.......................... 362
Vehicle washing ......................... 362
Ornamental moldings................ 363
Headlamps, taillamps, 
turn signal lenses ...................... 363
Window cleaning........................ 363
Wiper blade ................................. 363 

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 and closing windows 
and sliding / pop-up roof 
from outside ..................................  34
Panic button ..................................  35
Mechanical keys ...........................  35
Doors ..................................................  36
Central locking switch ....................  38
Automatic central locking ..............  40
Emergency unlocking 
in case of accident ......................  40
Trunk .................................................  41
Trunk lid emergency release  ........  43
Antitheft alarm system ...................  44Tow-away alarm ...............................  46
Easy-entry/exit feature ..................  47
Front seat adjustment.....................  48
Removal and installation of 
front seat head restraints ..........  54
Front seat backrest 
- locking and unlocking .............  56
Heated seats .....................................  58
Rear seat head restraints ...............  60
Seat belts and integrated 
restraint system ..........................  62
Seat belts ..........................................  62
Seat belt nonusage 
warning system...........................  63
BabySmart
TM airbag 
deactivation system....................  69
Self-test BabySmart
TM without 
special child seat installed ........  69
Supplemental Restraint 
System (SRS) ...............................  70
Emergency tensioning 
retractor (ETR) ............................. 71
Airbags..............................................  72Safety guidelines for the seat 
belt, emergency tensioning 
retractor and airbag....................  80
Infant and child 
restraint systems.........................  82
Steering wheel adjustment 
(manual) .......................................  87
Steering wheel adjustment 
(electrical) ....................................  88
Rear view mirrors ............................  89
Instrument cluster ...........................  96
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
Malfunction/warning
message memory ....................... 119 

28 Central locking system
Te ch n i c a l
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 starter switch, 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. 

29 Central locking system
Te ch n i c a l
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 glove box lock.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 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 41 for separate locking of trunk and page 207 
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. 

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 door 
handle. Check the batteries of the electronic key, see 
page 351, or synchronize the electronic key, see 
page 353.
•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. 

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 briefly – indicating that the batteries are 
in order. See page 351 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 panorama 
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 ‹, seepage34.
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
2Lamp for battery check (see page 351 for changing 
batteries if it does not light up briefly)
3PANIC button
4Transmitter eye
5Locking tab for mechanical key
P80.35-2033-26
2
1
4
3
5 

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 Œonce 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 Œonce to unlock all doors, 
fuel filler flap, and trunk.
Notes:
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 351 and 353.
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.