
Display messagesPossible causes/consequences and M SolutionsParking 
GuidanceCanceledThe Advanced Parking Guidance has been canceled because:
R the vehicle is sliding
R the bumper became dirty in the area of the sensors
R there has been a malfunctionXUse the Advanced Parking Guidance again later.
If the parking space symbol is not shown in the multifunction
display at a speed below 10 mph (16 km/h):
XClean the bumpers ( Y page 263).
or
XRestart the engine.
or
XContact an authorized Mercedes-Benz Center.Parking 
GuidanceFinishedAdvanced Parking Guidance: The vehicle is in the end
position.
The display message disappears automatically.Radar 
SensorsDeactivate
d See 
Operator's
 ManualYou have attempted to activate the DISTRONIC PLUS or the
PRE-SAFE ®
 Brake even though you have switched off the
radar sensors on the vehicle.XCheck if switching on the radar sensors is permitted
( Y  page 144).XSwitch on the radar sensors using the instrument cluster
control system.282Vehicle status messages in the multifunction displayPractical hints
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Display messagesPossible causes/consequences and M SolutionsService 
RequiredDo Not 
Shift 
Gears 
Visit 
DealerIn addition an acoustic warning sounds.
The automatic transmission cannot be shifted out of the
current transmission position because of a malfunction.
If the automatic transmission is in drive position  D:XWithout shifting the automatic transmission out of drive
position  D, drive to an authorized Mercedes-Benz Center.
If the automatic transmission is set to position neutral
position  N, reverse gear  R or park position  P:
XDo not drive.XContact an authorized Mercedes-Benz Center or call
Roadside Assistance.Only 
Shift to 
'P' when 
Vehicle 
is 
StationaryYou have attempted to shift the automatic transmission into
park position  P although the vehicle was still in motion.XStop your vehicle as soon as it is safe to do so.XShift the automatic transmission to park position  P.Shift to 
'P' or 'N'to Start 
EngineYou have attempted to start the engine with the KEYLESS-GO
start/stop button while the automatic transmission was in
reverse gear  R or drive position  D.XShift the automatic transmission into park position  P or
neutral position  N. Make sure the brake pedal is depressed.Auxiliary 
BatteryMalfunctio
nThe backup battery for the automatic transmission is no
longer charging.XContact an authorized Mercedes-Benz Center.
Tires
Display messagesPossible causes/consequences and  M SolutionsCheck 
Tire 
PressureThen 
Restart 
Run Flat 
IndicatorThere has been a warning message about a loss in the tire
inflation pressure and the tire pressure loss warning system
was not restarted yet.XMake sure the correct tire inflation pressure is set for each
tire.XThen restart the tire pressure loss warning system
( Y  page 232).Run Flat 
IndicatorInoperativ
eThe tire pressure loss warning system is malfunctioning.XHave the tire pressure loss warning system checked at an
authorized Mercedes-Benz Center.284Vehicle status messages in the multifunction displayPractical hints
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Display messagesPossible causes/consequences and M Solutions$
(USA only)
J
(Canada
only)EBD, ABS, 
and ESC 
Inoperativ
e See 
Operator's
 ManualIn addition, the yellow ESC warning lamp  ä, the yellow
ESC OFF warning lamp  å, and the yellow ABS indicator
lamp  ! come on.
The brake system is still functioning normally but due to a
malfunction, the ABS, the BAS, the BAS PLUS, the EBP, the
ESC, the HOLD function, the PRE-SAFE ®
 system, and the PRE-
SAFE ®
 Brake are unavailable.
The ATTENTION ASSIST is disabled.XContinue driving with added caution. Wheels may lock
during hard braking, reducing steering capability.XAdjust driving to be consistent with reduced braking
responsiveness.XHave the system checked at an authorized Mercedes-Benz
Center as soon as possible.
Failure to follow these instructions increases the risk of an
accident.
$
(USA only)
!
(Canada
only)Release 
Parking 
BrakeYou are driving with the parking brake engaged. In addition
an acoustic warning sounds.XRelease the parking brake.$
(USA only)
J
(Canada
only)Check 
Brake 
Fluid 
LevelThere is insufficient brake fluid in the reservoir.
Risk of accident!XStop the vehicle in a safe location or as soon as it is safe
to do so.XEngage the parking brake.XDo  not  drive any further.XContact an authorized Mercedes-Benz Center or call
Roadside Assistance.
Do not add brake fluid! This will not solve the problem.
GWarning!
Driving with the message  Check Brake Fluid Level  displayed can result in an accident. Have
your brake system checked immediately.
Do not add brake fluid before checking the brake system. Overfilling the brake fluid reservoir can
result in spilling brake fluid on hot engine parts and the brake fluid catching fire. You can be
seriously burned.
!  If you find that the brake fluid in the brake fluid reservoir has fallen to the minimum mark
or below, have the brake system checked for brake pad thickness and leaks.
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Display messagesPossible causes/consequences and M Solutions+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 317).+Key Not 
Detected
(message
appears in
red)The SmartKey with KEYLESS-GO is not detected while the
engine is running because the SmartKey is not in the vehicle.XStop the vehicle as soon as it is safe to do so.XEngage the parking brake.XSearch for the SmartKey.
The vehicle cannot be locked centrally nor can the engine
be started again after the engine is stopped.+Key Not 
Detected
(message
appears in
red)The SmartKey with KEYLESS-GO is not detected while the
engine is running because there is strong radio-frequency
interference.XStop the vehicle as soon as it is safe to do so.XEngage the parking brake.XRemove the KEYLESS-GO button from the starter switch
( Y  page 86).XOperate the vehicle with the SmartKey in the starter switch.+Key Not 
Detected
(message
appears in
white)The SmartKey with KEYLESS-GO is momentarily not detected.XChange the position of the SmartKey in the vehicle.XIf necessary, remove the KEYLESS-GO button from the
starter switch ( Y page 86).+Remove 
'Start' 
Button 
and 
Insert KeyThe KEYLESS-GO system is malfunctioning.XRemove the KEYLESS-GO button from the starter switch
( Y  page 86).XOperate the vehicle with the SmartKey in the starter switch.¥Check 
Washer 
FluidThe washer fluid in the washer fluid reservoir has fallen below
the minimum level.XAdd washer fluid ( Y page 227).294Vehicle status messages in the multifunction displayPractical hints
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Display messagesPossible causes/consequences and M SolutionsDPower 
Steering
Malfunctio
n
See 
Operator's
 ManualPower assistance for the steering system is not available. A
considerably higher degree of effort is necessary to steer the
vehicle.XCheck whether you are capable to apply the higher degree
of effort necessary to safely steer the vehicle.
If you are able to steer the vehicle safely:
XContinue driving with added caution.XHave the system checked at an authorized Mercedes-Benz
Center.
If, in any way, you feel that you are not able to steer the vehicle
safely:
XStop the vehicle in a safe location as soon as it is safe to
do so.XApply the parking brake.XDo not continue to drive.XContact an authorized Mercedes-Benz Center.
Engine
Display messagesPossible causes/consequences and  M Solutions+Check 
Coolant 
Level See 
Operator's
 ManualThe coolant level is too low.XAdd coolant ( Y page 226).XIf you have to add coolant frequently, have the cooling
system checked at an authorized Mercedes-Benz Center.GWarning!
Do not spill antifreeze on hot engine parts. Antifreeze contains ethylene glycol which may burn
if it comes into contact with hot engine parts. You could be seriously burned.
!  Do not ignore the low engine coolant level warning. Extended driving with the message
and symbol displayed may cause serious engine damage not covered by the Mercedes-Benz
Limited Warranty.
Do not drive without sufficient amount of coolant in the cooling system. The engine will
overheat causing major engine damage.
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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
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Display messagesPossible causes/consequences and M Solutions4Check 
Engine 
Oil At 
Next 
RefuelingThe engine oil has dropped to a critical level.XCheck the engine oil level ( Y page 224) and add engine oil
as required ( Y page 225).XIf you must add engine oil frequently, have the engine
checked for possible leaks.If the message  Check Engine Oil At Next 
Refueling  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 service
station 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 SolutionsCThe fuel level is low.XRefuel at the next gas station.8Fuel 
Level LowThe fuel level has dropped below the reserve mark.XRefuel at the next gas station.8Ultra Low-
sulfur 
Diesel 
Fuel OnlyVehicles with diesel engine only:
The fuel level has dropped below the reserve mark.XRefuel at the next gas station.XOnly use commercially available vehicular ULTRA-LOW
SULFUR HIGHWAY DIESEL FUEL (ULSD, 15 ppm SULFUR
MAXIMUM).8Gas Cap 
LooseA 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 220).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.298Vehicle status messages in the multifunction displayPractical hints
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Display messagesPossible causes/consequences and M Solutions¸Replace 
Air FilterThe air filter is clogged.XHave the air filter checked at an authorized Mercedes-Benz
Center.!Check 
Fuel 
FilterThere is water in the fuel filter.XHave the water drained at an authorized Mercedes-Benz
Center as soon as possible.ØCheck 
Additive 
See 
Operator's
 ManualThe AdBlue ®
 supply is almost depleted.XHave the AdBlue ®
 tank refilled as soon as possible
( Y  page 333).
Contact an authorized Mercedes-Benz Center.ØRemaining 
Starts: 20The AdBlue ®
 supply has dropped to the minimum level.XHave the AdBlue ®
 tank refilled immediately ( Y page 333).
Contact an authorized Mercedes-Benz Center.i When the message  Remaining 
Starts: 20  appears in the multifunction
display, you can start the engine 20 more
times. If you do not add AdBlue ®
, the
engine cannot be started beyond that
point. Therefore, fill the AdBlue ®
 tank withapproximately 1 gal (3.79 l) AdBlue ®
(corresponds to approximately 2 refill
containers AdBlue ®
) or have the AdBlue ®
tank filled at an authorized Mercedes-Benz
Center. After AdBlue ®
 was refilled, the
engine can be started again.
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.bAdaptive 
Highbeam 
Assist 
Inoperativ
eThe Adaptive Highbeam Assist is malfunctioning.XContact an authorized Mercedes-Benz Center as soon as
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