
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 .................................... 32
General notes on the
central locking system ............... 33
Central locking system ................... 34
Radio frequency and
infrared remote control ............... 34
KEYLESS-GO ................................. 38Opening and
closing windows and
sliding / pop-up roof
from outside ................................. 45
Panic button ................................. 47
Mechanical keys .......................... 47
Doors ................................................. 48
Power closing assist for
doors and trunk lid .................... 50
Central locking switch .................... 50
Automatic central locking .............. 52
Emergency unlocking
in case of accident ...................... 52
Trunk ................................................. 53
Trunk lid release switch ................ 57
Trunk lid release/close switch ...... 58
Trunk lid emergency release .........61
Antitheft alarm system ................... 62
Tow-away alarm ............................... 64
Easy-entry/exit feature .................. 66
Front seat adjustment ..................... 67
Removal and installation
of front seat head restraints ..... 72
Lumbar support ............................... 73Multicontour backrest ..................... 73
Seat heater ........................................ 75
Seat ventilation system ................... 78
Rear seat head restraints ................ 80
Power head restraints, rear ............ 81
Power seats, rear .............................. 82
Seat belts and integrated
restraint system .......................... 84
Seat belts ........................................... 84
Seat belt nonusage
warning system ........................... 85
BabySmart
TM airbag
deactivation system .................... 91
Self-test BabySmart
TM
without special child
seat installed ................................. 91
Supplemental Restraint
System (SRS) ............................... 92
Emergency tensioning
retractor (ETR) ............................. 93
Airbags .............................................. 94
Safety guidelines for the
seat belt, emergency
tensioning retractor
and airbag .................................. 100

5 Contents
Practical hintsFirst aid kit .....................................328
Stowing things in the vehicle ......328
Fuses ................................................329
Hood ................................................. 331
Checking engine oil level .............334
Automatic transmission
fluid level ...................................335
Active body control
(ABC) fluid level ........................335
Coolant level ...................................336
Adding coolant ...........................336
Windshield and
headlamp washer system ........337
Windshield and
headlamp washer fluid
mixing ratio ................................337
Spare wheel, vehicle tools,
storage compartment ................338
Vehicle jack .....................................339
Wheels .............................................340
Tire Replacement .......................340
Rotating wheels .......................... 341
Spare wheel .................................... 341Changing wheels ........................... 343
Tire inflation pressure ................. 348
Battery ............................................. 349
Jump starting ................................. 351
Towing the vehicle ........................ 353
Exterior lamps ............................... 356
Headlamp assembly .................. 357
Taillamp assemblies .................. 360
Trunk lamp ..................................... 362
Changing batteries in the
electronic main key .................. 363
Synchronizing
remote control ............................ 365
Changing batteries in the
KEYLESS-GO-card .................... 366
Emergency engine
shut-down .................................. 368
Fuel filler flap,
manual release ......................... 368
Emergency operation of
sliding/pop-up roof .................. 369
Replacing wiper blades ................ 370
Roof rack ..........................................371
Vehicle careCleaning and care
of the vehicle ............................. 374
Power washer ..............................375
Tar stains ..................................... 376
Paintwork, painted body
components ................................. 376
Engine cleaning .......................... 376
Vehicle washing ......................... 376
Ornamental moldings ................377
Headlamps, taillamps,
turn signal lenses ......................377
Cleaning the Distronic
system sensor .............................378
Cleaning the parktronic
system sensors ...........................378
Wiper blades ...............................379
Light alloy wheels ......................380
Instrument cluster .....................380
Steering wheel and
gear selector lever ......................380
Cup holder ...................................380
Seat belts ..................................... 381

20 Instruments and controls
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
Door control panel1Door handle, pull to open, see page 48
2Memory function (for storing seat, steering wheel,
rear view mirror and exterior mirror settings), see
page 111
3Seat heater, see page 75
Seat ventilation, see page 78
4Front seat adjustment, see page 67
5Exterior mirror adjustment, see page 106
6Power windows, see page 181
7Trunk lid release switch, see page 57
Trunk lid opening/closing system switch, see
page 58
34
5
2
1
P72.10-2239-27
3
3
3
3
37
6

26 Contents - Operation
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
OperationVehicle keys ...................................... 28
Start lock-out .................................... 32
General notes on the
central locking system ............... 33
Central locking system ................... 34
Radio frequency and
infrared remote control ............... 34
KEYLESS-GO ................................. 38
Opening and
closing windows and
sliding / pop-up roof
from outside .................................. 45
Panic button .................................. 47
Mechanical keys ........................... 47
Doors .................................................. 48
Power closing assist for
doors and trunk lid ..................... 50
Central locking switch .................... 50
Automatic central locking .............. 52
Emergency unlocking
in case of accident ...................... 52
Trunk ................................................. 53
Trunk lid release switch ................. 57Trunk lid release/close switch ...... 58
Trunk lid emergency release .........61
Antitheft alarm system ................... 62
Tow-away alarm ............................... 64
Easy-entry/exit feature .................. 66
Front seat adjustment ..................... 67
Removal and installation
of front seat head restraints ..... 72
Lumbar support ............................... 73
Multicontour backrest .................... 73
Seat heater ........................................ 75
Seat ventilation system .................. 78
Rear seat head restraints ............... 80
Power head restraints, rear ............ 81
Power seats, rear ............................. 82
Seat belts and integrated
restraint system .......................... 84
Seat belts .......................................... 84
Seat belt nonusage
warning system .......................... 85
BabySmart
TM airbag
deactivation system ....................91Self-test BabySmart
TM
without special child
seat installed ................................. 91
Supplemental Restraint
System (SRS) ............................... 92
Emergency tensioning
retractor (ETR) ............................. 93
Airbags .............................................. 94
Safety guidelines for the
seat belt, emergency
tensioning retractor
and airbag .................................. 100
Infant and child restraint
systems ....................................... 102
Steering wheel adjustment .......... 105
Rear view mirrors .......................... 106
Memory function ............................ 111
Instrument cluster ..........................114
Multifunction steering wheel,
multifunction display ............... 120
Trip and main odometer,
FSS, tire inf lation pressure
monitor and engine oil level
indicator ..................................... 124
Audio systems ............................. 125

27 Contents - Operation
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Radio ............................................ 125
CD player ..................................... 126
Cassette player ........................... 127
Telephone ........................................ 128
Telephone book .......................... 128
Redialing ..................................... 130
Incoming call .............................. 132
Navigation system .......................... 133
Distronic (DTR) ............................... 134
Trip computer ................................. 135
Malfunction / warning
message memory ...................... 136
Individual settings ......................... 138
Setting the audio volume .............. 146
Flexible service system
(FSS) ............................................ 147
Tire inflation
pressure monitor ...................... 150
Engine oil level indicator .............. 154
Engine oil consumption ................ 155
Exterior lamp switch ..................... 156Night security illumination ..........158
Headlamp cleaning system ...........159
Combination switch .......................160
Hazard warning flasher
switch ..........................................163
Automatic climate control .............164
Display and controls ..................166
Basic setting ................................168
Special Settings ..........................169
Activated charcoal filter ........... 172
Economy mode ........................... 173
Residual engine heat
utilization .....................................174
Switching the automatic
climate control on and off ........ 175
Front center console storage
compartment ventilation .......... 175
Front center console storage
compartment ventilation .......... 175
Rear passenger compartment
climate control .......................... 177Power windows ............................... 181
Sliding/pop-up roof ....................... 184
Interior lighting ............................. 187
Rear window sunshade ................. 190
Rear door window sunshade ........ 191
Sun visors ....................................... 191
Vanity mirrors ................................ 192
Interior ............................................ 193
Storage compartments and
armrests ..................................... 193
Glove box ..................................... 194
Cup holder ...................................... 199
Ashtrays .......................................... 201
Lighter .............................................203
Parcel net in front
passenger footwell ....................204
Parcel net in trunk ........................204
Telephone, general ........................205
Garage door opener .......................206
Infrared reflecting
windshield ................................. 210

29 Central locking system
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Electronic main key
The electronic main 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 main key.
The infrared receivers are located in the front door
handles.
Note:
Remove the mechanical key from the electronic main
key when using valet parking service. To prevent access
to trunk or storage compartments lock them separately
and retain the mechanical key.
See page 53 for separate locking of trunk and page 194
for locking of glove box.
P80.35-2031-26
1
3
4
2

31 Central locking system
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index KEYLESS-GO-card
The KEYLESS-GO-card (1) does not have a removable
mechanical key.
The functions of the KEYLESS-GO-card (1) are identical
to those of the electronic main key. Carrying the card
with you permits the use of the vehicle.The validity of the KEYLESS-GO-card is checked every
time when grasping a door handle or pushing the trunk
lid release. Once the KEYLESS-GO-card is recognized
outside the vehicle, the doors, trunk lid and fuel filler
flap are unlocked, depending on the selected mode
(global or selective unlocking mode, see page 43).
Starter switch KEYLESS-GO, see page 228.
Starting and turning off the engine with KEYLESS-GO,
see page 231 and page 232.
Note:
In the case of a malfunction in the KEYLESS-GO-system,
we recommend that you carry the electronic key plus
mechanical key with you and keep them in a safe place
so that they are always handy. Never leave the electronic
key or a KEYLESS-GO-card in the vehicle.
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.
P80.30-2029-26
1

33 Central locking system
Te ch n ica 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
main key, see page 363, or synchronize the remote
control, see page 365.
•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 38. Check the batteries of the KEYLESS-
GO-card, see page 366. The trunk lid will open
automatically if a KEYLESS-GO card is detected in
the trunk, see page 38.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 main 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.