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Display messagesPossible causes/consequences and M Solutions?Coolant
Stop car,
switch
engine
off.The coolant is too hot.XStop the vehicle immediately as soon as it is safe to do so.XTurn off the engine immediately.XEngage the parking brake.XOnly start the engine again after the message disappears.
You could otherwise damage the engine.XObserve the coolant temperature gauge in the instrument
cluster.XIf the temperature rises again: Contact an authorized
Mercedes-Benz Center immediately.
During severe operation conditions and stop-and-go city
traffic, the coolant temperature may rise close to 248‡
(120†).
GWarning!
Driving when your engine is overheated can cause some fluids which may have leaked into the
engine compartment to catch fire. You could be seriously burned.
Steam from an overheated engine can cause serious burns which can occur just by opening the
engine hood. Stay away from the engine if you see or hear steam coming from it.
Stop the vehicle in a safe location away from other traffic. Turn off the engine, get out of the
vehicle and do not stand near the vehicle until the engine has cooled down.
! The engine should not be operated with the coolant temperature above 248‡ (120†).
Doing so may cause serious damage which is not covered by the Mercedes-Benz Limited
Warranty.
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Display messagesPossible causes/consequences and M Solutions?Coolant
Stop car,
switch
engine
off.The 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.246Vehicle status messages in the multifunction displayPractical hints
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Display messagesPossible causes/consequences and M Solutions#The battery is no longer charging.
Possible causes:
R alternator malfunctioning
R broken poly-V-belt
R a malfunction in the electronic system
Do not forget that the brake system requires electrical energy
and may be operating with restricted capability. Considerably
greater brake pedal force is required and the stopping
distance is increased.XStop 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.#Battery/
Alternator
Stop CarThe battery is defective.
The electro-hydraulic brake system requires electrical energy
and therefore has only limited operation. Considerably
greater brake pedal force is required and the stopping
distance is increased.XStop the vehicle in a safe location or as soon as it is safe
to do so.XAdjust driving to be consistent with reduced braking
responsiveness.XContact an authorized Mercedes-Benz Center.4Engine
Oil Level
Check
LevelVehicles with oil dipstick only:
The engine oil has dropped to a critical level.XCheck the engine oil level ( Y page 181) and add engine oil
as required ( Y page 183).XIf you must add engine oil frequently, have the engine
checked for possible leaks.Vehicle status messages in the multifunction display247Practical hints230_AKB; 6; 22, en-USd2ureepe,Version: 2.11.8.12009-07-28T18:49:58+02:00 - Seite 247Z
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Display messagesPossible causes/consequences and M Solutions4Add 1 qt
engine
oil at
next
refueling.
(USA only)
Add 1
liter
engine
oil at
next
refueling.
(Canada
only)Vehicles with engine oil measuring system only:
The engine oil level is too low.XAdd engine oil ( Y page 183) and check the engine oil level
( Y page 181).XIf you must add engine oil frequently, have the engine
checked for possible leaks.If the message Add 1 qt (Canada: 1 liter)
engine oil at next refueling or
Engine Oil Level Check Level appears
while the engine is running and at operating
temperature, the engine oil level has dropped
to approximately the minimum level.
The message will be stored in the vehicle
status message memory after you have
cleared it from the multifunction display.
Visually check for oil leaks. If there are no
obvious oil leaks, drive to the nearest servicestation to refill your engine oil to the required
level.
For information on approved engine oils
contact an authorized Mercedes-Benz Center
or visit www.mbusa.com (USA only).
! Engine oil level warnings should not be
ignored. Extended driving with the symbol
displayed could result in serious engine
damage that is not covered by the
Mercedes-Benz Limited Warranty.Display messagesPossible causes/consequences and M Solutions4Engine
Oil Level
Cannot
measure
eng. oil
level.Vehicles with engine oil measuring system only:
The measuring system is malfunctioning.XHave the measuring system checked at an authorized
Mercedes-Benz Center.4Engine
Oil Level
Reduce
Oil LevelVehicles with engine oil measuring system only:
You have added too much engine oil. There is a risk of
damaging the engine or the catalytic converter.XHave oil siphoned or drained off. Observe all legal
requirements with respect to its disposal.248Vehicle status messages in the multifunction displayPractical hints
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Display messagesPossible causes/consequences and M Solutions4Engine
Oil Level
Stop car,
switch
engine
off.The engine oil level is too low. There is a danger of engine
damage.XStop the vehicle in a safe location or as soon as it is safe
to do so.XTurn off the engine.XEngage the parking brake.XAdd engine oil ( Y page 183) and check the engine oil level
( Y page 181).CThe fuel level is low.XRefuel at the next gas station.8Reserve
FuelThe fuel level has dropped below the reserve mark.XRefuel at the next gas station.8Fuel Cap
OpenA loss of pressure has been detected in the fuel system. The
fuel cap may not be closed properly or the fuel system may
be leaking.XCheck the fuel cap ( Y page 178).XIf it is not closed properly: Close the fuel cap.XIf it is closed properly: Have the fuel system checked at
an authorized Mercedes-Benz Center.
Lamps
Display messagesPossible causes/consequences and M SolutionsbActive
Headlamps
Inoperativ
eThe active Bi-Xenon headlamp system is malfunctioning.XContact an authorized Mercedes-Benz Center as soon as
possible.bReverse
Lamp Left
or
Reverse
Lamp RightThe left or right backup lamp is malfunctioning.XReplace the bulb as soon as possible ( Y page 271).Vehicle status messages in the multifunction display249Practical hints230_AKB; 6; 22, en-USd2ureepe,Version: 2.11.8.12009-07-28T18:49:58+02:00 - Seite 249Z
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Display messagesPossible causes/consequences and M SolutionsbBrake
Lamp Left
Auxiliary
Bulb On
or
Brake
Lamp
Right
Auxiliary
Bulb OnThe left or right brake lamp is malfunctioning. A substitute
bulb is being used.XContact an authorized Mercedes-Benz Center as soon as
possible.b3rd Brake
LampThe high-mounted brake lamp is malfunctioning. This
message will only appear if all LEDs have stopped working.XContact an authorized Mercedes-Benz Center as soon as
possible.bFront
Foglamp
Left
or
Front
Foglamp
RightThe left or right front fog lamp is malfunctioning.XContact an authorized Mercedes-Benz Center as soon as
possible.bMarker
Lamp
Front Left
or
Marker
Lamp
Front
RightThe front left side or right side marker lamp is malfunctioning.XContact an authorized Mercedes-Benz Center as soon as
possible.bMarker
Lamp Rear
Left
or
Marker
Lamp Rear
RightThe rear left side or right side marker lamp is malfunctioning.XContact an authorized Mercedes-Benz Center as soon as
possible.250Vehicle status messages in the multifunction displayPractical hints
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Display messagesPossible causes/consequences and M SolutionsbParking
Lamp
Front
Left
Auxiliary
Bulb On
or
Parking
Lamp
Front
Right
Auxiliary
Bulb OnThe left or right front parking lamp is malfunctioning. A
substitute bulb is being used.XReplace the bulb as soon as possible ( Y page 271).bHigh Beam
Left
or
High Beam
RightThe left or right high-beam lamp is malfunctioning.XReplace the bulb as soon as possible ( Y page 271).bLicense
Plate
Lamp -
Left
or
License
Plate
Lamp -
RightThe left or right license plate lamp is malfunctioning.XReplace the bulb as soon as possible ( Y page 271).bAUTO
Light
Inoperativ
eThe light sensor is malfunctioning. The headlamps come on
automatically.XContact an authorized Mercedes-Benz Center as soon as
possible.
To switch off the headlamps (U.S. vehicles only):
XIn the control system, set daytime running lamp mode to
manual ( Y page 124).XSwitch off the headlamps using the exterior lamp switch
( Y page 89).bLow Beam
Left
or
Low Beam
RightThe left or right low-beam lamp is malfunctioning.XContact an authorized Mercedes-Benz Center as soon as
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Display messagesPossible causes/consequences and M SolutionsbRear
Foglamp
LeftThe rear fog lamp is malfunctioning.XContact an authorized Mercedes-Benz Center as soon as
possible.bLights
Are still
OnYou have removed the SmartKey from the starter switch,
opened the driver’s door and left the headlamps on or
removed the SmartKey with KEYLESS-GO from the vehicle
and left the headlamps on.XTurn the exterior lamp switch to $ or Ã
( Y page 89).
or
XWith the rear fog lamp switched on: Push in the exterior
lamp switch to its stop.bTail Lamp
Left
Auxiliary
Bulb On
or
Tail Lamp
Right
Auxiliary
Bulb OnThe left or right tail lamp is malfunctioning. A substitute bulb
is being used.XContact an authorized Mercedes-Benz Center as soon as
possible.bCornering
Lamp Left
or
Cornering
Lamp RightThe left or right corner-illuminating lamp is malfunctioning.XReplace the bulb as soon as possible ( Y page 271).bTurn
Signal
Rear Left
Auxiliary
Bulb On
or
Turn
Signal
Rear
Right
Auxiliary
Bulb OnThe left or right rear turn signal lamp is malfunctioning. A
substitute bulb is being used.XReplace the bulb as soon as possible ( Y page 271).252Vehicle status messages in the multifunction displayPractical hints
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