
When the parking lamps or the rear fog
lamp are switched on and you remove the
SmartKey from the starter switch and open
the driver’s door, an acoustic signal
sounds.
In addition the message  Switch Off 
Lights  appears in the multifunction
display.
Switch off the parking lamps or the rear fog
lamp manually.
!  Failure to switch off the parking lamps
when leaving the vehicle may result in a
discharged battery.
Low-beam headlamps 
The low-beam headlamps can be switched on
and off with the exterior lamp switch.
XSwitch on the ignition.XSwitching on:  Turn the exterior lamp
switch to position  L.
The following lamps come on:
R Low-beam headlamps
R Tail lamps
R Parking lamps
R License plate lamps
R Side marker lamps
R Instrument panel lamps
R Green indicator lamp  L in the
instrument clusterXSwitching off:  Turn the exterior lamp
switch to position  $.
Automatic headlamp mode 
The following lamps come on and go out
automatically depending on the brightness of
the ambient light:
R Low-beam headlamps
R Tail lamps
R Parking lamps
RLicense plate lamps
R Side marker lampsGWarning!
If the exterior lamp switch is set to  c, the
headlamps will not automatically come on
under foggy conditions.
To minimize risk to you and to others, activate
headlamps by turning exterior lamp switch to
L  when driving or when traffic and/or
ambient lighting conditions require you to do
so.
In low ambient lighting conditions, only switch
from position  c to L  with the vehicle
at a standstill in a safe location. Switching
from  c to L  will briefly switch off the
headlamps. Doing so while driving in low
ambient lighting conditions may result in an
accident.
The automatic headlamp feature is only an aid
to the driver. The driver is responsible for the
operation of the vehicle’s lights at all times.
XSwitching on:  Turn the exterior lamp
switch to position  c.
The following lamps come on and go out
depending on the brightness of the ambient
light with the SmartKey in starter switch
position  1 or the KEYLESS-GO start/stop
button pressed once:
R Tail lamps
R Parking lamps
R License plate lamps
R Side marker lamps
When the engine is running, the low-beam
headlamps will also come on and turn off
automatically.
Canada only:  High-beam headlamps are only
available in low ambient lighting conditions.
Daytime running lamp mode 
In Canada, the daytime running lamp mode is
mandatory and therefore in a constant mode.
88LightingControls in detail
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VehicleDisplay messagesPossible causes/consequences and M SolutionsAThe tailgate is open.XClose the tailgate ( Y page 71).?You are driving with the hood open.XStop the vehicle in a safe location as soon as it is safe to
do so.XClose the hood ( Y page 215).
There is otherwise danger of an accident.
;You are driving with at least one door open. The display
symbol shows you which doors are open.XClose all doors.+Key 
Detected 
In VehicleA SmartKey with KEYLESS-GO left in the vehicle was
recognized while trying to lock the vehicle from the outside.XTake the SmartKey out of the vehicle.+Don’t 
Forget 
Your KeyThis message appears for a maximum of 60 seconds if the
driver’s door is opened with the engine turned off and no
SmartKey in the starter switch. This message is only a
reminder.XTake the SmartKey with you when leaving the vehicle.+Take Your 
Key From 
IgnitionYou have forgotten to remove the SmartKey.XRemove the SmartKey from the starter switch.+Obtain A 
New KeyThe SmartKey is malfunctioning.XContact an authorized Mercedes-Benz Center.+Close 
Doors To 
Lock 
VehicleYou tried to lock the vehicle but not all doors were closed.XClose doors and lock the vehicle again.+Key Does 
Not 
Belong to 
VehicleThe SmartKey in the starter switch does not belong to the
vehicle.XRemove the SmartKey from the starter switch.+Replace 
Key 
BatteryThe batteries in the SmartKey with KEYLESS-GO are
discharged.XReplace the batteries ( Y page 302).Vehicle status messages in the multifunction display277Practical hintsX204_AKB; 3; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T19:16:58+02:00 - Seite 277Z 

Display messagesPossible causes/consequences and M Solutions?Coolant 
Low Stop 
Vehicle! 
Turn 
Engine OffThe poly-V-belt could be broken.XStop the vehicle immediately as soon as it is safe to do so.XTurn off the engine immediately.XCheck the poly-V-belt.XIf it is broken:  Do not continue to drive. Otherwise the
engine will overheat due to an inoperative water pump
which may result in damage to the engine. Contact an
authorized Mercedes-Benz Center.XIf it is intact:  Do not continue to drive the vehicle with this
message displayed. Doing so could result in serious engine
damage that is not covered by the Mercedes-Benz Limited
Warranty.XObserve the coolant temperature gauge in the instrument
cluster.XDrive to the nearest authorized Mercedes-Benz Center
immediately.?The radiator cooling fan is malfunctioning.XObserve the coolant temperature gauge in the instrument
cluster.
If the coolant temperature is below  248‡ (120†),  you may
continue driving to an authorized Mercedes-Benz Center.XAvoid placing heavy loads on the engine (e.g. by driving
uphill) as well as stop-and-go traffic.XHave the fan replaced as soon as possible.#The battery is no longer charging.
Possible causes:
R alternator malfunctioning
R broken poly-V-belt
R a malfunction in the electronic systemXStop immediately in a safe location or as soon as it is safe
to do so and check the poly-V-belt.XIf it is broken:  Do not continue to drive. Otherwise the
engine will overheat due to an inoperative water pump
which may result in damage to the engine. Contact an
authorized Mercedes-Benz Center.XIf it is intact:  Drive to the nearest authorized Mercedes-
Benz Center immediately. Adjust driving to be consistent
with reduced braking responsiveness.Vehicle status messages in the multifunction display281Practical hintsX204_AKB; 3; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T19:16:58+02:00 - Seite 281Z 

vehicle moved to a safe location where the
recommended towing methods can be
employed.
! Before towing the vehicle observe the
following instructions:
RDo not tow-start the vehicle. You could
otherwise seriously damage the
automatic transmission which is not
covered by the Mercedes-Benz Limited
Warranty.
RDo not tow with sling-type equipment.
Towing with sling-type equipment over
bumpy roads will damage radiator and
supports.
RTowing of the vehicle should only be
done using the properly installed towing
eye bolt. Never attach a tow cable, tow
rope or tow rod to the vehicle chassis,
frame or suspension parts.
GWarning!
With the engine not running, there is no power
assistance for the brake 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. Adapt your driving accordingly.
! Avoid pulling the vehicle abruptly or
diagonally, since it could result in damage
to the chassis alignment.
! Do not use the towing eye bolt for
recovery, as this could damage the vehicle.
If in doubt, recover the vehicle with a crane.
iIf the battery is disconnected or
discharged
Rthe SmartKey will not turn in the starter
switch
Rthe automatic transmission will remain in
park position P
For more information see “Battery”
(Y page 317) or “Jump starting”
(Y page 319).
For information on manually unlocking the
gear selector lever, see (Y page 301).
Installing towing eye bolt
Depending on whether you are towing a
vehicle or you are being towed, the towing eye
bolt can be screwed into threaded holes
which are located behind covers on each
bumper.
The towing eye bolt is supplied with the
vehicle tool kit, located in the cargo
compartment underneath the cargo
compartment floor (Y page 260).
XTake the towing eye bolt out of the space
underneath the cargo compartment floor.
Removing cover in front bumper
XPress mark on cover : as indicated by the
arrow.
XLift cover : off to reveal the threaded hole
for the towing eye bolt.
Removing cover in rear bumper
GWarning!
In order to avoid possible serious burns or
injury, use extreme caution when removing
the rear cover, because the rear exhaust pipe
is extremely hot.
322Towing the vehiclePractical hints
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