MERCEDES-BENZ GLK-Class 2011 X204 Owner's Manual

Display messagesPossible causes/consequences and M SolutionsFront Passenger
Airbag Enabled
See Operator's
ManualThe front-passenger air bag is enabled during the journey,
although:
R there is a child, a small adult or an object weighing less than the
system's weight threshold on the front-passenger seat.
R the front-passenger seat is unoccupied.
The system may detect the additional weight of objects on the
seat or forces acting on the seat.XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.XEngage the parking brake.XSwitch off the ignition.XOpen the front-passenger door.XRemove the child and the child restraint system from the front-
passenger seat.XIf necessary, secure the child in a child restraint system on a
suitable rear seat.XMake sure that there are no objects adding to the weight applied
to the seat. The system may otherwise detect the additional
weight and interpret the seat occupant's weight as greater than
it actually is.XMake sure that the seat is unoccupied and has no objects placed
on it, close the front-passenger door, and switch on the ignition.
Observe the 45(Y page 41) indicator lamps and the
multifunction display and check the following:
Seat unoccupied and ignition switched on:
R the 45 indicator lamp must light up and remain lit. When
the indicator lamp is on, OCS ( Y page 41) has deactivated the
front-passenger air bag.
R The Front Passenger Airbag Enabled See Operator's
Manual or Front Passenger Airbag Disabled See
Operator's Manual display messages must not appear. Wait
for at least 60 seconds until the necessary system checks have
been completed and to make sure that the display messages do
not appear in the multifunction display.
If these conditions are met, the front-passenger seat can be
occupied again. Whether the 45 indicator lamp remains lit
or goes out depends on how OCS classifies the occupant.
If the conditions are not met, the system is not operating correctly.
XVisit a qualified specialist workshop immediately.Display messages179On-board computer and displaysBA 204.9 USA, CA Edition A 2011; 1; 6, en-USd2mwentsVersion: 3.0.3.62010-06-15T08:58:39+02:00 - Seite 179Z

GWarning
If the 45 indicator lamp remains off even after performing the above corrective steps, do
not have any children 12 years old and under and other small individuals use the front-passenger
seat until the system has been repaired.
Display messagesPossible causes/consequences and M SolutionsFront Passenger
Airbag Disabled
See Operator's
ManualThe front-passenger air bag is deactivated during the journey even
though an adult or a person larger than a certain size is occupying
the front-passenger seat. If additional forces are applied to the
seat, the system may interpret the occupant's weight as lower
than it actually is.XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.XEngage the parking brake.XSwitch off the ignition.XHave the occupant get out of the vehicle.XMake sure that the seat is unoccupied and has no objects placed
on it, close the front-passenger door, and switch on the ignition.
Observe the 45(Y page 41) indicator lamps and the
multifunction display and check the following:
Seat unoccupied and ignition switched on:
R the 45 indicator lamp must light up and remain lit. When
the indicator lamp is on, OCS ( Y page 41) has deactivated the
front-passenger air bag.
R The Front Passenger Airbag Enabled See Operator's
Manual or Front Passenger Airbag Disabled See
Operator's Manual display messages must not appear. Wait
for at least 60 seconds until the necessary system checks have
been completed and to make sure that the display messages do
not appear in the multifunction display.
If these conditions are met, the front-passenger seat can be
occupied again. Whether the 45 indicator lamp remains lit
or goes out depends on how OCS classifies the occupant.
If the conditions are not met, the system is not operating correctly.
XVisit a qualified specialist workshop immediately.GWarning
If the 45 indicator lamp remains lit with an adult occupant on the front-passenger seat
even after performing the above corrective steps, do not have any passenger use the front-
passenger seat until the system has been repaired.
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BrakesDisplay messagesPossible causes/consequences and M Solutions$ (USA only)
J (Canada only)
ABS and ESC
Currently
Unavailable See
Operator's ManualGRisk of accident
ABS (Anti-lock Braking System), ESP ®
(Electronic Stability
Program), BAS (Brake Assist), hill start assist and ESP ®
trailer
stabilization are temporarily unavailable. The self-diagnosis might
not be finished, for example. In addition, the ä, å
and ! warning lamps light up in the instrument cluster.
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
XCarefully drive a suitable distance making slight steering
movements at a speed above 12 mph (20 km/h).
If the display message disappears, the functions mentioned
above are available again.
If the display message continues to be displayed:
XDrive on carefully.XVisit a qualified specialist workshop.GRisk of accident
ABS, ESP ®
, BAS, hill start assist and trailer stabilization are
temporarily unavailable. The on-board voltage may be insufficient,
for example. In addition, the ä, å and ! warning lamps
light up in the instrument cluster.
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
XDrive on carefully.
If the display message disappears, the functions mentioned
above are available again.
If the display message continues to be displayed:
XDrive on carefully.XVisit a qualified specialist workshop.Display messages181On-board computer and displaysBA 204.9 USA, CA Edition A 2011; 1; 6, en-USd2mwentsVersion: 3.0.3.62010-06-15T08:58:39+02:00 - Seite 181Z

Display messagesPossible causes/consequences and M Solutions$ (USA only)
J (Canada only)
ABS and ESC
Inoperative See
Operator's ManualGRisk of accident
ABS, ESP ®
, BAS, hill start assist and ESP ®
trailer stabilization are
unavailable due to a malfunction. In addition, the ä, å
and ! warning lamps light up in the instrument cluster.
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
XDrive on carefully.XVisit a qualified specialist workshop.$ (USA only)
J (Canada only)
EBD, ABS, and ESC
Inoperative See
Operator's ManualGRisk of accident
EBD (Electronic Brake force Distribution), ABS, ESP ®
, BAS, hill
start assist and ESP ®
trailer stabilization are unavailable due to a
malfunction. In addition, the ä, å and ! warning lamps
in the instrument cluster light up and a warning tone sounds.
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
XDrive on carefully.XVisit a qualified specialist workshop immediately.#
Check Brake Pad
WearThe brake pads/linings have reached their wear limit.XVisit a qualified specialist workshop.$ (USA only)
J (Canada only)
Release Park. BrakeYou are driving with the parking brake engaged. A warning tone
also sounds.XRelease the parking brake.$ (USA only)
J (Canada only)
Check Brake Fluid
LevelGRisk of accident
There is insufficient brake fluid in the brake fluid reservoir.
Additionally, the red $ (USA only)/ J (Canada only)
warning lamp lights up in the instrument cluster and a warning
tone sounds.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.XEngage the parking brake.XConsult a qualified specialist workshop.XDo not add brake fluid. This will not rectify the malfunction.182Display messagesOn-board computer and displays
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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.
Lights
i Display messages concerning LEDs:
This display message will only appear if all LEDs have failed.
Display messagesPossible causes/consequences and M Solutionsb
Check Left
Corner'g Lite
or
Right Corner'g LiteThe left or right-hand cornering light is faulty. XCheck whether you are permitted to change the bulb yourself
( Y page 107).
or
XVisit a qualified specialist workshop.b
Check Left Low Beam
or
Check Right Low
BeamThe left or right-hand low-beam headlamp is faulty. XCheck whether you are permitted to change the bulb yourself
( Y page 107).
or
XVisit a qualified specialist workshop.b
Chk. Trailer Lt
Tail Lamp
or
Chk. Trailer Rt
Tail LampThe left or right-hand trailer tail light is faulty.XCheck whether you are permitted to change the bulb yourself.
or
XVisit a qualified specialist workshop.b
Check Trailer Lt.
Turn Sig.
or
Chk. Trailer Rt
Turn Sig.The left or right-hand trailer turn signal lamp is faulty.XCheck whether you are permitted to change the bulb yourself.
or
XVisit a qualified specialist workshop.b
Chk. Trailer Brake
LampThe trailer brake lamp is faulty.XCheck whether you are permitted to change the bulb yourself.
or
XVisit a qualified specialist workshop.Display messages183On-board computer and displaysBA 204.9 USA, CA Edition A 2011; 1; 6, en-USd2mwentsVersion: 3.0.3.62010-06-15T08:58:39+02:00 - Seite 183Z

Display messagesPossible causes/consequences and M Solutionsb
Turn Signal Rear
Left
or
Chk. Rear Rt Turn
SignalThe rear left-hand or rear right-hand turn signal is faulty.XCheck whether you are permitted to change the bulb yourself
( Y page 107).
or
XVisit a qualified specialist workshop.b
Chk. Front Lt.
Turn Signal
or
Front right
indicatorThe front left-hand or front right-hand turn signal is faulty.XCheck whether you are permitted to change the bulb yourself
( Y page 107).
or
XVisit a qualified specialist workshop.b
Check Left Mirror
Signal
or
Check Right Mirror
SignalThe turn signal in the left-hand and/or right-hand exterior mirror
is faulty.XCheck whether you are permitted to change the bulb yourself
( Y page 107).
or
XVisit a qualified specialist workshop.b
Chk. Center Brake
LampThe high-mounted brake lamp is faulty.XCheck whether you are permitted to change the bulb yourself
( Y page 107).
or
XVisit a qualified specialist workshop.b
Chk. Lt. Tail
+Brake Lmp.
or
Chk. Rt. Tail
+Brake Lmp.The left or right-hand tail lamp/brake lamp is faulty.XCheck whether you are permitted to change the bulb yourself
( Y page 107).
or
XVisit a qualified specialist workshop.b
Check Left High
Beam
or
Check Right High
BeamThe left or right-hand high beam is faulty. XCheck whether you are permitted to change the bulb yourself
( Y page 107).
or
XVisit a qualified specialist workshop.184Display messagesOn-board computer and displays
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Display messagesPossible causes/consequences and M Solutionsb
Chk. Left Lic. Pl
Lamp
or
Chk. Right Lic. Pl
LampThe left or right-hand license plate lamp is faulty. XCheck whether you are permitted to change the bulb yourself
( Y page 107).
or
XVisit a qualified specialist workshop.b
Check Left Fog Lamp
or
Check Right Fog
LampThe left-hand or right-hand front fog lamp is faulty. XCheck whether you are permitted to change the bulb yourself
( Y page 107).
or
XVisit a qualified specialist workshop.b
Chk. Rear Lt. Fog
Lamp
or
Chk. Rear Rt Fog
LampThe left-hand or right-hand rear fog lamp is faulty. XCheck whether you are permitted to change the bulb yourself
( Y page 107).
or
XVisit a qualified specialist workshop.b
Chk. Front Lt.
Park'g Lmp
or
Chk. Front Rt.
Park'g Lmp.The front left or front right standing lamp is faulty. XCheck whether you are permitted to change the bulb yourself
( Y page 107).
or
XVisit a qualified specialist workshop.b
Check Left Revers.
Lmp
or
Check Right
Revers. LampThe left or right-hand backup lamp is faulty. XCheck whether you are permitted to change the bulb yourself
( Y page 107).
or
XVisit a qualified specialist workshop.b
Chk. Front Lt
Sidemarker
or
Chk. Front Rt
SidemarkerThe front left or right side marker lamp is faulty. XCheck whether you are permitted to change the bulb yourself
( Y page 107).
or
XVisit a qualified specialist workshop.Display messages185On-board computer and displaysBA 204.9 USA, CA Edition A 2011; 1; 6, en-USd2mwentsVersion: 3.0.3.62010-06-15T08:58:39+02:00 - Seite 185Z

Display messagesPossible causes/consequences and M Solutionsb
Check Rear Lt.
Sidemarker
or
Chk. Rear Rt
SidemarkerThe rear left or right side marker lamp is faulty.XCheck whether you are permitted to change the bulb yourself
( Y page 107).
or
XVisit a qualified specialist workshop.b
Chk. Lt. Day
Running Lite
or
Chk. Rt. Day
Running LiteThe left or right-hand daytime running lamp is defective.XCheck whether you are permitted to change the bulb yourself
( Y page 107).
or
XVisit a qualified specialist workshop.b
Active Headlamps
InoperativeThe active light function is faulty.XVisit a qualified specialist workshop.b
Malfunction See
Operator's ManualThe exterior lighting is faulty.XVisit a qualified specialist workshop.b
AUTO Lamps
InoperativeThe light sensor is faulty. The low-beam headlamps are switched
on.XUSA only: switch off the daytime driving lights in the on-board
computer ( Y page 172).XSwitch the lights on and off using the light switch.XVisit a qualified specialist workshop.b
Switch Off LightsThe lights are still switched on when you leave the vehicle. A
warning tone also sounds.XTurn the light switch to c.
Engine
Display messagesPossible causes/consequences and M Solutions+
Check Coolant
Level See
Operator's ManualThe coolant level is too low.XAdd coolant, observing the warning notes when doing so
( Y page 234).XIf coolant needs adding more often than usual, have the engine
coolant system checked at a qualified specialist workshop.186Display messagesOn-board computer and displays
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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.
! The coolant level is too low. Avoid making long journeys with too little coolant in the cooling
system. The engine will otherwise be damaged.
The display messages and the corresponding symbol that indicate that the coolant level is
too low must not be ignored.
Display messagesPossible causes/consequences and M Solutions?
Coolant Level Low
Stop Vehicle Turn
Engine OffThe coolant is too hot.XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.XMake sure that the air supply to the radiator is not blocked, e.g.
by snow, slush or ice.XWait until the display message disappears before restarting the
engine. There is otherwise a risk of engine damage.XPay attention to the coolant temperature display.XIf the temperature increases again, visit a qualified specialist
workshop immediately.The poly-V-belt may have torn.XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.XOpen the hood.XCheck whether the poly-V-belt is torn.
If the poly-V-belt is torn:
! Do not continue driving. The engine could otherwise overheat.
XConsult a qualified specialist workshop.
If the poly-V-belt is OK:
XWait until the display message disappears before restarting the
engine. There is otherwise a risk of engine damage.XPay attention to the coolant temperature display.XVisit a qualified specialist workshop.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.
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! If the coolant temperature exceeds 248 ‡(120 †) do not continue driving. The engine will
otherwise be damaged.Display messagesPossible causes/consequences and M Solutions?The engine fan is faulty.XAt coolant temperatures below 248 ‡ (120 †), continue driving
to the next qualified specialist workshop.XAvoid subjecting the engine to heavy loads, e.g. driving in
mountainous terrain, and stop-start driving.#The battery is not being charged.
Possible causes are:
R a faulty alternator
R a torn poly-V-belt
R a malfunction in the electronicsXPull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.XOpen the hood.XCheck whether the poly-V-belt is torn.
If the poly-V-belt is torn:
! Do not continue driving. The engine could otherwise overheat.
XConsult a qualified specialist workshop.
If the poly-V-belt is OK:
XVisit a qualified specialist workshop.4
Check Engine Oil
At Next
Refueling Check
Engine Oil at Next
RefuelingThe engine oil level has dropped to a critical level.
A warning tone also sounds.XCheck the oil level ( Y page 233).XIf necessary, add the engine oil ( Y page 234).XHave the engine checked for leaks if engine oil has to be added
more often than usual.
Information on approved engine oils can be obtained from any qualified specialist workshop
or on the Internet at http://www.mbusa.com (USA only).
! The oil level is too low. Avoid long journeys with too little engine oil. There is a risk of
engine damage.
The display messages and the corresponding symbol that indicate that the oil level is too
low must not be ignored.
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