warning light MERCEDES-BENZ GL 2014 Repair Manual

Display messagesPossible causes/consequences andPPSolutions
'(USA
only)M(Canada
only)
Check Brake FluidCheck Brake Fluid
LevelLevel
There is not enough brake fluid in the brake fluid reservoir. In
addition, the'(USA only)/M(Canada only) warning lamp
lights up in the instrument cluster and a warning tone sounds.
GWARNING
The braking effect may be impaired.
There is a risk of an accident.
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.
XSecure the vehicle against rolling away (Ypage 188).
XConsult a qualified specialist workshop.
XDo not add brake fluid. This does not correct the malfunction.
&
Check Brake PadCheck Brake Pad
WearWear
The brake pads/linings have reached their wear limit.
XVisit a qualified specialist workshop.
S
mbrace Inoperativembrace Inoperative
USA only: one or more of the main functions in the mbrace system
are malfunctioning.
Canada only: one or more of the main functions of the TELEAID
system are malfunctioning.
XUSA only: have the mbrace system checked at a qualified
specialist workshop.
XCanada only: have the TELEAID system checked at a qualified
specialist workshop.
PRE-SAFEPRE-SAFE
Inoperative SeeInoperative See
Operator's ManualOperator's Manual
Important functions of PRE-SAFE®have failed. All other occupant
safety systems, e.g. air bags, remain available.
XVisit a qualified specialist workshop immediately.
Displaymessages297
On-b oard computer and displays
Z

Display messagesPossible causes/consequences andPPSolutions
PRE-SAFEPRE-SAFE
FunctionsFunctions
Currently LimitedCurrently Limited
See Operator'sSee Operator's
ManualManual
Vehicles with the Active Driving Assistance package:
PRE-SAFE®Brake is temporarily inoperative. Possible causes are:
Rfunction is impaired due to heavy rain or snow.
Rthe sensors in the radiator grill and the bumper are dirty.
Rthe radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio
stations or other sources of electromagnetic radiation.
RAMG vehicles: ESP®is deactivated.
Rthe system is outside the operating temperature range.
Rthe on-board voltage is too low.
When the causes stated above no longer apply, the display
message disappears.
PRE-SAFE®Brake is operational again.
If the display message does not disappear:
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 188).
XClean the sensors in the radiator grill and the bumper
(Ypage 380).
XRestart the engine.
XAMG vehicles: reactivate ESP®(Ypage 73).
PRE-SAFEPRE-SAFE
FunctionsFunctions
Currently LimitedCurrently Limited
See Operator'sSee Operator's
ManualManual
Vehicles without the Active Driving Assistance package: Adaptive
Brake Assist is faulty. The distance warning function may also have
failed.
Vehicles with the Active Driving Assistance package:
PRE-SAFE®Brake is faulty. BAS PLUS or the distance warning
function may also have failed.
XVisit a qualified specialist workshop.
u
SRS MalfunctionSRS Malfunction
Service RequiredService Required
There is a malfunction in the SRS (Supplemental Restraint
System).
Theuwarning lamp also lights up in the instrument cluster.
GWARNING
The air bags or Emergency Tensioning Devices may either be
triggered unintentionally or, in the event of an accident, may not
be triggered.
There is an increased risk of injury.
XVisit a qualified specialist workshop.
Further information on occupant safety (Ypage 43).
Displaymessages299
On-b oard computer and displays
Z

Display messagesPossible causes/consequences andPPSolutions
u
Front LeftFront Left
MalfunctionMalfunction
Service RequiredService Required
orFront RightFront Right
MalfunctionMalfunction
Service RequiredService Required
SRS has malfunctioned at the front on the left or right. Theu
warning lamp also lights up in the instrument cluster.
GWARNING
The air bags or Emergency Tensioning Devices may either be
triggered unintentionally or, in the event of an accident, may not
be triggered.
There is an increased risk of injury.
XVisit a qualified specialist workshop.
u
Rear LeftRear Left
MalfunctionMalfunction
Service RequiredService Required
orRear RightRear Right
MalfunctionMalfunction
Service RequiredService Required
SRS has malfunctioned at the rear on the left or right. Theu
warning lamp also lights up in the instrument cluster.
GWARNING
The air bags or Emergency Tensioning Devices may either be
triggered unintentionally or, in the event of an accident, may not
be triggered.
There is an increased risk of injury.
XVisit a qualified specialist workshop.
u
Rear CenterRear Center
MalfunctionMalfunction
Service RequiredService Required
SRS has malfunctioned at the rear center. Theuwarning lamp
also lights up in the instrument cluster.
GWARNING
The air bags or Emergency Tensioning Devices may either be
triggered unintentionally or, in the event of an accident, may not
be triggered.
There is an increased risk of injury.
XVisit a qualified specialist workshop.
u
Left Side CurtainLeft Side Curtain
AirbagAirbagMalfunctionMalfunction
Service RequiredService Required
orRight SideRight Side
Curtain AirbagCurtain Airbag
MalfunctionMalfunction
Service RequiredService Required
There is a malfunction in the left-hand or right-hand window
curtain air bag. Theuwarning lamp also lights up in the
instrument cluster.
GWARNING
The left or right window curtain air bag may either be triggered
unintentionally or, in the event of an accident, may not be
triggered.
There is an increased risk of injury.
XVisit a qualified specialist workshop.
300Displaymessages
On-b oard computer and displays

Display messagesPossible causes/consequences andPPSolutions
Front PassengerFront Passenger
Airbag DisabledAirbag Disabled
See Operator'sSee Operator's
ManualManual
The front-passenger air bag is disabled during the journey, even
though:
Ran adult
or
Ra 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.
GWARNING
The front-passenger air bag does not deploy during an accident.
There is an increased risk of injury.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 188).
XSwitch the ignition off.
XHave the occupant get out of the vehicle.
XKeep the seat unoccupied, close the front-passenger door and
switch on the ignition.
XObserve the PASSENGER AIR BAG OFF indicator lamp in the
center console and the multifunction display and check the
following:
Seat unoccupied and ignition switched on:
Rthe PASSENGER AIR BAG OFF indicator lamp must light up and
remain lit. If the indicator lamp is on, OCS has disabled the front-
passenger air bag (Ypage 49).
RtheFront Passenger Airbag Enabled See Operator'sFront Passenger Airbag Enabled See Operator's
ManualManualorFront Passenger Airbag Disabled SeeFront Passenger Airbag Disabled See
Operator's ManualOperator's Manualdisplay messages must not be shown in
the multifunction display.
XWait for a period of at least 60 seconds until the necessary
system checks have been completed.
XMake sure that the display messages do not appear in the
multifunction display.
If these conditions are fulfilled, the front-passenger seat can be
occupied again. Whether the PASSENGER AIR BAG OFF indicator
lamp remains lit or goes out depends on how OCS classifies the
occupant.
If the conditions are not fulfilled, the system is not operating
correctly.
XVisit a qualified specialist workshop immediately.
Displaymessages301
On-b oard computer and displays
Z

Display messagesPossible causes/consequences andPPSolutions
Front PassengerFront Passenger
Airbag EnabledAirbag Enabled
See Operator'sSee Operator's
ManualManual
The front-passenger air bag is enabled during the journey, even
though:
Ra child, a small adult or an object weighing less than the
system's weight threshold is located on the front-passenger
seat
or
Rthe front-passenger seat is unoccupied
The system may detect objects or forces applying additional
weight on the seat.
GWARNING
The air bag may deploy unintentionally.
There is an increased risk of injury.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 188).
XSwitch the ignition off.
XOpen the front-passenger door.
XRemove the child and the child restraint system from the front-
passenger seat.
XMake sure that there are no objects on the seat adding to the
weight.
The system may otherwise detect the additional weight and
interpret the seat occupant's weight as greater than it actually
is.
XKeep the seat unoccupied, close the front-passenger door and
switch on the ignition.
XObserve the PASSENGER AIR BAG OFF indicator lamp in the
center console and the multifunction display and check the
following:
Seat unoccupied and ignition switched on:
Rthe PASSENGER AIR BAG OFF indicator lamp must light up and
remain lit. When the indicator lamp is on, OCS (Occupant
Classification System) has disabled the front-passenger air bag
(Ypage 49).
RtheFront Passenger Airbag Enabled See Operator'sFront Passenger Airbag Enabled See Operator's
ManualManualorFront Passenger Airbag Disabled SeeFront Passenger Airbag Disabled See
Operator's ManualOperator's Manualdisplay messages must not be shown in
the multifunction display.
302Displaymessages
On-b oard computer and displays

Display messagesPossible causes/consequences andPPSolutions
I
Check Front LeftCheck Front Left
Parking LampParking Lampor
Check Front RightCheck Front Right
Parking LampParking Lamp
The front left or front right parking or standing lamp is defective.
XCheck whether you are permitted to replace the bulb yourself
(Ypage 138).
or
XVisit a qualified specialist workshop.
I
Backup LightBackup Light
The backup lamp is defective.
XVisit a qualified specialist workshop.
I
Check Front LeftCheck Front Left
Sidemarker LampSidemarker Lampor
Check Front RightCheck Front Right
Sidemarker LampSidemarker Lamp
The left or right front side marker lamp is defective.
XVisit a qualified specialist workshop.
I
Check Left TailCheck Left Tail
LampLamporCheckCheck
Right Tail LampRight Tail Lamp
The left or right-hand tail lamp is defective.
or
The rear left or right side marker lamp is defective.
XVisit a qualified specialist workshop.
I
CheckCheckLeftLeftDaytimeDaytime
Running LightRunning Lightor
Check RightCheck Right
Daytime RunningDaytime Running
LightLight
The left-hand or right-hand daytime running lamp is faulty.
XVisit a qualified specialist workshop.
I
Active LightActive Light
System InoperativeSystem Inoperative
The active light function is defective.
XVisit a qualified specialist workshop.
I
Malfunction SeeMalfunction See
Operator's ManualOperator's Manual
The exterior lighting is defective.
XVisit a qualified specialist workshop.
Vehicles with trailer tow hitch: a fuse may have blown.
XCheck the fuses (Ypage 400).
XIf necessary, replace the blown fuse. Observe the warning notes.
If the display message continues to be displayed:
XVisit a qualified specialist workshop.
Displaymessages305
On-b oard computer and displays
Z

Display messagesPossible causes/consequences andPPSolutions
I
AutoAutoLampLampFunctionFunction
InoperativeInoperative
The light sensor is defective.
XVisit a qualified specialist workshop.
I
Switch Off LightsSwitch Off Lights
The lights are still switched on when you leave the vehicle. A
warning tone also sounds.
XTurn the light switch toX.
Adaptive HighbeamAdaptive Highbeam
Assist InoperativeAssist Inoperative
Adaptive Highbeam Assist is faulty.
XVisit a qualified specialist workshop.
Adaptive HighbeamAdaptive Highbeam
Assist CurrentlyAssist Currently
Unavailable SeeUnavailable See
Operator's ManualOperator's Manual
Adaptive Highbeam Assist is deactivated and temporarily
inoperative. Possible causes are:
Rthe windshield in the camera's field of vision is dirty.
Rvisibility is impaired due to heavy rain, snow or fog.
XClean the windshield.
If the system detects that the camera is fully operational again,
theAdaptive Highbeam Assist Now AvailableAdaptive Highbeam Assist Now Availablemessage is
displayed.
Adaptive Highbeam Assist is operational again.
Engine
Display messagesPossible causes/consequences andPPSolutions

ProblemPossible causes/consequences andPPSolutions
%
The yellow ABS warning
lamp is lit while the
engine is running.
ABS is temporarily unavailable. Therefore, BAS, BAS PLUS, ESP®,
EBD (electronic brake force distribution), PRE-SAFE®,
PRE-SAFE®Brake, COLLISION PREVENTION ASSIST, the HOLD
function, hill start assist, crosswind driving assistance and ESP®
trailer stabilization, for example, are also deactivated.
ATTENTION ASSIST is deactivated.
Possible causes are:
Rself-diagnosis is not yet complete.
Rthe on-board voltage may be insufficient.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The front and rear wheels could therefore
lock if you brake hard, for example.
The steerability and braking characteristics may be severely
affected. The braking distance in an emergency braking situation
can increase.
If ESP®is not operational, ESP®is unable to stabilize the vehicle.
There is a risk of an accident.
XCarefully drive a suitable distance, making slight steering
movements at a speed above 12 mph (20 km/h).
The functions mentioned above are available again when the
warning lamp goes out.
If the warning lamp is still on:
XObserve the additional display messages in the multifunction
display.
XDrive on carefully.
XVisit a qualified specialist workshop.
328Warning and indicator lamps in the instrument cluster
On-board computer and displays

ProblemPossible causes/consequences andPPSolutions
I(USA only)
$(Canada only)
The red electric parking
brake indicator lamp
flashes or lights up
and/or
$
warning lamp for the
electric parking brake
lights up.
XObserve the additional display messages in the multifunction
display.
u
The red SRS warning
lamp is lit while the
engine is running.
There is a malfunction in the SRS (Supplemental Restraint
System).
GWARNING
The air bags or Emergency Tensioning Devices may either be
triggered unintentionally or, in the event of an accident, may not
be triggered.
There is an increased risk of injury.
XObserve the additional display messages in the multifunction
display.
XDrive on carefully.
XHave SRS checked at a qualified specialist workshop
immediately.
For further information about SRS, see (Ypage 43).
332Warning and indicator lamps in the instrument cluster
On-board computer and displays

Cargo compartment
There are four cargo tie-down ringsCin the
cargo compartment.
Bag hook
GWARNING
The bag hooks cannot restrain heavy objects
or items of luggage. Objects or items of
luggage could be flung around and thereby hit
vehicle occupants when braking or abruptly
changing directions. There is a risk of injury.
Only hang light objects on the bag hooks.
Never hang hard, sharp-edged or fragile
objects on the bag hooks.
!The bag hook can bear a maximum load
of 6.6lbs (3kg) and should not be used to
secure a load.
There is a bag hook in the cargo compartment
on the right-hand side.
XPress bag hook markingC.
XTurn bag hookCuntil it engages.
Cargo compartment cover
Important safety notes
GWARNING
On its own, the cargo compartment cover
cannot secure or restrain heavy objects,
items of luggage and heavy loads. You could
be hit by an unsecured load during sudden
changes in direction, braking or in the event
of an accident. There is an increased risk of
injury or even fatal injury.
Always store objects so that they cannot be
flung around. Secure objects, luggage or
loads against slipping or tipping over, e.g. by
using tie downs, even if you are using the
cargo compartment cover.
!When loading the vehicle, make sure that
you do not stack the load in the cargo
compartment higher than the lower edge of
the side windows. Do not place heavy
objects on top of the cargo compartment
cover.
The cargo compartment cover may be
installed behind the 2nd or 3rd row of seats.
Extending/retracting the cargo
compartment cover
346Stowage areas
Stowage and features