
248 Malfunction and warning messages
Technical
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
LIGHT SENSOR
With the electronic key removed and the driver’s door
open, a wa rning sou nds a nd t he message “ SWITCH O FF
LIGHTS!” appears in the multifunction indicator if the
vehicle’s exterior lamps (except standing lamps) are not
switched off.REMOVE KEY
This message plus an audible alarm indicate that the
electronic key is in steering lock position 0 or 1, and the
driver’s door is open.
P54.30-3573-21

256 Fuses
Technical
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
2Auxiliary fuse box below rear seat bench
To gain access, remove rear seat bench.
See page 294.3Auxiliary fuse box to left of exterior lamp switch
To again access, open door, pry off cover and
remove.

283 Towing the vehicle
Technical
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index We recommend that the vehicle be transported using
flat bed equipment. This method is preferable to other
types of towing.
The vehicle may be towed with all wheels on the ground
and the selector lever in position “N” for distances up to
30 miles (50 km) and at a speed not to exceed 30 mph
(50 km / h). The electronic key must be in steering lock
position 2.
To be certain to avoid a possibility of damage to the
transmission, however, we recommend the drive shaft
be disconnected at the rear axle drive f lange for any
towing beyond a short tow to a nearby garage.
Do not tow with sling-type equipment. Towing with
sling-type equipment over bumpy roads will damage
radiator and supports.
Use wheel lift, dolly, or flat bed equipment, with
electronic key in steering lock turned to position 0.Note:
To signal turns while being towed with hazard warning
flasher in use, turn electronic key in steering lock to
position 2 and activate combination switch for left or
right turn signal in usual manner – only the selected
turn signal will operate.
Upon canceling the turn signal, the hazard warning
f lasher will operate again.
Caution!
If the vehicle is towed with the front axle raised, the
engine must be shut off (electronic key in steering lock
position 0 or 1). Otherwise, the ESP will immediately be
engaged and will apply the rear wheel brakes. Switch off
t h e tow - aw ay a lar m a s we l l as t he ES P .
Wa r n i n g !
With the engine not running, there is no power
assistance for the braking and steering systems. In
this case, it is important to keep in mind that a
considerably higher degree of effort is necessary to
brake and steer the vehicle.

285 Exterior lamps
Technical
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Exterior lamps
Replacing bulbsNotes:
To prevent a possible electrical short circuit, switch off
lamp prior to replacing a bulb.
When replacing bulbs, install only 12 volt bulbs with
the specified watt rating.
When replacing halogen bulbs do not touch glass
portion of bulb with bare hands. Use plain paper or a
clean cloth.
Wa r n i n g !
Bulbs and bulb holder can be very hot. Allow the
lamp to cool down before changing a bulb.
Halogen lamps contain pressurized gas. A bulb can
explode if you:
• touch or move it when hot,
•drop the bulb,
• scratch the bulb.Wear eye and hand protection.
Wa r n i n g !
Because of high voltage in Xenon lamps, it is
dangerous to replace the bulb or repair the lamp
and its components. We recommend that you have
such work done by a qualified technician.

293 Electronic main key
Technical
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Important!
Batteries contain materials that can harm the
environment if disposed of improperly. Recycling of
batteries is the preferred method of disposal. For
disposal, please follow manufacturer’s recommendation
on battery package.
Replacement Battery:
Lithium, type CR 2025 or equivalent.
Synchronizing remote control
The remote control may have to be resynchronized, if
the vehicle cannot be locked or unlocked.
To synchronize insert electronic key in starter switch.
The remote control should once again be operational.Emergency engine shut-down
If the engine can no longer be stopped using the
electronic key, the engine can be turned off by removing
two fuses.
For easy removal of fuses use the fuse extractor
(supplied with vehicle tool kit) to pull out the fuses
marked on the fuse chart as “ENGINE EMERGENCY
OFF”.
The fuse chart is also located in the vehicle tool kit,
seepage264.
For fuses see page 255.

298 Trunk lamp, Roof rack
Technical
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Trunk lamp
If the trunk is to remain open for a long period of time,
the trunk lamp can be switched off by pulling out the
plunger in the switch (arrow). This prevents the vehicle
battery from being discharged.
When the trunk lid is closed, the switch will reset and
turn on the lamp next time the lid is opened.Roof rack
Use only those roof racks approved by Mercedes-Benz to
avoid damage to the vehicle. Follow manufacturer’s
installation instructions.
Mount supports only between markings on border of
roof which are visible when doors are opened.

327 Index
Technical
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex Economy ..................................................................... 129
Front center console
compartment ventilation .................................... 133
Rear passenger compartment
adjustable air outlet ............................................. 134
Rear window defroster ............................................. 130
Residual engine heat utilization (REST) ............... 132
Special settings ......................................................... 129
Automatic transmission ............................................... 193
Emergency operation ............................................... 201
Fluid level ................................................................... 261
Program mode selector switch ...............................200
Selector lever position .............................................. 196
Transmission selector lever,
manually unlocking .............................................284
BBabySmart
TM airbag deactivation system ..................... 67
Self-test ......................................................................... 67
BAS (Brake assist system) ............................................ 215
Malfunction indicator lamp .....................................237
Battery .............................................................................277
Battery recycling .......................................................278
BATTERY / ALTERNATOR -
malfunction and warning messages ...................... 241Block heater .................................................................... 210
BRAKE ASSIST -
malfunction and warning messages ..................... 242
Brake assist system (BAS) ............................................ 215
Malfunction indicator lamp .................................... 237
Brake fluid ..................................................................... 320
BRAKE FLUID - malfunction and
warning messages ................................................... 243
BRAKE LINING WEAR -
malfunction and warning messages ..................... 243
Brake pad wear .............................................................. 243
Brake warning lamp ..................................................... 235
Brake fluid low ......................................................... 235
Brakes .................................................... 204, 215, 217, 220
CCapacities
Fuels, coolants, lubricants etc. ............................... 318
Cargo tie-down hooks .................................................... 169
Catalytic converter ......................................................... 188
Cellular telephone ..........................................................170
Center console .................................................................. 20
Central locking switch .................................................... 37
Central locking system .................................................... 29
Automatic central locking .........................................38

328 Index
Technical
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex
Choosing global or selective mode ........................... 32
Electronic main key .................................................... 25
Electronic reserve key ................................................ 26
Locking and unlocking .............................................. 31
Mechanical keys .......................................................... 34
Remote control ............................................................ 25
Summer opening/convenience feature ................... 33
CHECK ENGINE malfunction indicator lamp ............234
Check regularly and before a long trip ...................... 231
Checking engine oil level
Via engine oil level indicator ...................................117
Via oil dipstick ...........................................................260
Child restraint ..................................................... 60, 67, 78
Cleaning and care of the vehicle .................................300
Clock, setting ................................................................... 111
Coin holder in glove box lid ......................................... 163
COMAND, radio and telephone ....................................176
Combination switch ...................................................... 122
Consumer information ..................................................324
Control and operation of radio transmitters ..............176
COOLANT (coolant level) -
malfunction and warning messages ......................245
Coolant level ................................................................... 261
Adding coolant ..........................................................262
Checking .................................................................... 261COOLANT TEMP. -
malfunction and warning messages ..................... 246
Coolant temperature gauge ............................................ 90
Coolants .......................................................................... 322
Anticorrosion/antifreeze quantity ........................ 323
Cruise control ................................................................. 212
Cup holder
In center console ....................................................... 165
In glove box lid .......................................................... 163
In rear bench armrest ............................................... 162
DDaytime running lamps ................................................120
Deep water
Driving instructions ................................................. 211
DISPLAY DEFECTIVE (engine control unit) -
malfunction and warning messages ..................... 240
DISPLAY DEFECTIVE (several systems) -
malfunction and warning messages ..................... 240
Display illumination ........................................................ 89
Doors .................................................................................. 35
Drinking and driving .................................................... 203
Drive sensibly - Save Fuel ............................................ 203
Driving instructions ..................................................... 203
Driving off ...................................................................... 205