MERCEDES-BENZ GLA 2019 Owners Manual

Display messagesPossible causes/consequences andPPSolutions
The yellow$warning lamp lights up and the redI(USAonly) or$(Canada only) indicator lamp flashes.
It is not possible to apply the electric parking brake manually.
XShift the transmission to position].
XVisit a qualified specialist workshop.
'(USA only)
M(Canada only)
Check Brake FluidCheck Brake FluidLevelLevel
There is not enough brake fluid in the brake fluid reservoir.
A warning tone sounds. The'(USA only) orM(Canada only)warning lamps in the instrument cluster may also light up.
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, payingattention to road and traffic conditions. Do not continue drivingunder any circumstances.
XSecure the vehicle against rolling away (Ypage 145).
XConsult a qualified specialist workshop.
XDo not add brake fluid. This does not correct the malfunction.
&
Check Brake PadCheck Brake PadWearWear
The brake pads/linings have reached their wear limit.
XVisit a qualified specialist workshop.
S
InoperativeInoperative
Malfunction of one or more main functions of the Mercedes me con-nect system.
XVisit a qualified specialist workshop.
Mercedes me con‐Mercedes me con‐nect Services Limi‐nect Services Limi‐ted See Operator'sted See Operator'sManualManual
Service limited.
Malfunction of one or more main functions of the Mercedes me con-nect system.
XObserve the notes on diagnostics connection (Ypage 27).
XVisit a qualified specialist workshop.
Displaymessages209
On-b oard computer and displays
Z

Display messagesPossible causes/consequences andPPSolutions
Active BrakeActive BrakeAssist FunctionsAssist FunctionsCurrently LimitedCurrently LimitedSee Operator's Man‐See Operator's Man‐ualual
Active Brake Assist is temporarily inoperative.
Possible causes are:
Rthe radar sensor system is temporarily inoperative, e.g. due toelectromagnetic radiation emitted by nearby TV or radio stationsor other sources of electromagnetic radiation
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 messagedisappears.
Active Brake Assist is operational again.
If the display message does not disappear:
XPull over and stop the vehicle safely as soon as possible, payingattention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 145).
XRestart the engine.
Active BrakeActive BrakeAssist: SystemAssist: SystemInoperativeInoperative
Active Brake Assist is unavailable due to a malfunction. Situation-dependent braking assistance may also have failed.
XVisit a qualified specialist workshop immediately.
Radar SensorsRadar SensorsDirty See Opera‐Dirty See Opera‐tor's Manualtor's Manual
The radar sensor system is malfunctioning.
Possible causes are:
Rdirt on sensors
Rheavy rain or snow
Rwhen driving on inter-urban roads without traffic or infrastructure,e.g. in desert-like areas
At least one driving system or driving safety system is malfunction-ing or is temporarily unavailable:
RActive Brake Assist
RActive Distance Assist DISTRONIC
A warning tone also sounds.
Once the cause of the problem is no longer present, the driving anddrive safety systems will be available again. The display messagedisappears.
If the display message does not disappear:
XPull over and stop the vehicle safely as soon as possible, payingattention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 145).
XSwitch off the engine.
XClean all sensors (Ypage 282).
XRestart the engine.The display message disappears.
210Displaymessages
On-b oard computer and displays

Display messagesPossible causes/consequences andPPSolutions
u
SRS MalfunctionSRS MalfunctionService RequiredService Required
The restraint system is malfunctioning. Theuwarning lamp alsolights up in the instrument cluster.
GWARNING
The air bags or Emergency Tensioning Devices may either be trig-gered unintentionally or, in the event of an accident, may not betriggered.
There is an increased risk of injury.
XVisit a qualified specialist workshop immediately.
Further information about the restraint system (Ypage 39).
u
Front Left Malfunc‐Front Left Malfunc‐tion Servicetion ServiceRequiredRequiredorFrontFrontRight MalfunctionRight MalfunctionService RequiredService Required
The restraint system is malfunctioning at the front on the left orright. Theuwarning lamp also lights up in the instrument clus-ter.
GWARNING
The air bags or Emergency Tensioning Devices may either be trig-gered unintentionally or, in the event of an accident, may not betriggered.
There is an increased risk of injury.
XVisit a qualified specialist workshop immediately.
u
Rear Left Malfunc‐Rear Left Malfunc‐tion Servicetion ServiceRequiredRequiredorRearRearRight MalfunctionRight MalfunctionService RequiredService Required
The rear left-hand or right-hand restraint system is malfunctioning.Theuwarning lamp also lights up in the instrument cluster.
GWARNING
The air bags or Emergency Tensioning Devices may either be trig-gered unintentionally or, in the event of an accident, may not betriggered.
There is an increased risk of injury.
XVisit a qualified specialist workshop immediately.
u
Left Side CurtainLeft Side CurtainAirbag MalfunctionAirbag MalfunctionService RequiredService RequiredorRight Side Cur‐Right Side Cur‐tain Airbag Mal‐tain Airbag Mal‐function Servicefunction ServiceRequiredRequired
The left-hand or right-hand window curtain air bag is malfunctioning.Theuwarning lamp also lights up in the instrument cluster.
GWARNING
The left or right window curtain air bag may either be triggered unin-tentionally or, in the event of an accident, may not be triggered.
There is an increased risk of injury.
XVisit a qualified specialist workshop immediately.
Displaymessages211
On-b oard computer and displays
Z

Display messagesPossible causes/consequences andPPSolutions
Front PassengerFront PassengerAirbag DisabledAirbag DisabledSee Operator's Man‐See Operator's Man‐ualual
The front-passenger air bag and front-passenger knee bag are deac-tivated during the journey, although:
Ran adult
or
Ra person of the corresponding stature is on the front passengerseat
If additional forces are applied to the seat, the system may interpretthe occupant's weight as lower than it actually is.
GWARNING
The front-passenger front air bag and front passenger knee bag maynot be triggered in the event of an accident.
There is an increased risk of injury.
XPull over and stop the vehicle safely as soon as possible, payingattention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 145).
XSwitch the ignition off.
XHave the occupant on the front passenger seat get out of thevehicle.
XKeep the seat unoccupied, close the front passenger door andswitch on the ignition.
XObserve the PASSENGER AIR BAG indicator lamps in the centerconsole and the multifunction display and check the following:
Seat unoccupied and ignition switched on:
Ra self-diagnosis is carried out. The PASSENGER AIR BAG OFFand PASSENGER AIR BAG ON indicator lamps must light upsimultaneously for approximately six seconds
Rthe PASSENGER AIR BAG OFF indicator lamp must then lightup and remain lit after the self-diagnosis. If the indicator lampis on, OCS (Occupant Classification System) has deactivatedthe front-passenger front air bag and front-passenger knee bag(Ypage 47)
RtheFront Passenger Airbag Enabled See Operator'sFront Passenger Airbag Enabled See Operator'sManualManualorFront Passenger Airbag Disabled See Opera‐Front Passenger Airbag Disabled See Opera‐tor's Manualtor's Manualdisplay messages must not be shown on themultifunction display
XWait for a period of at least 60 seconds until the necessary sys-tem checks have been completed.
XMake sure that the display messages do not appear in the multi-function display.
If these conditions are fulfilled, the front passenger seat can beoccupied again. Whether the PASSENGER AIR BAG OFF or ON indi-cator lamp remains lit or goes out depends on how OCS classifiesthe occupant.
If the conditions are not fulfilled, the system is not operating cor-rectly.
XVisit a qualified specialist workshop immediately.
212Displaymessages
On-b oard computer and displays

Display messagesPossible causes/consequences andPPSolutions
Further information about the Occupant Classification System(Ypage 47).
Front PassengerFront PassengerAirbag Enabled SeeAirbag Enabled SeeOperator's ManualOperator's Manual
The front-passenger air bag and front-passenger knee bag are ena-bled during the journey, even though:
Ra child, a small adult or an object weighing less than the system'sweight threshold is located on the front passenger seat
or
Rthe front passenger seat is unoccupied
The system may detect objects or forces applying additional weighton the seat.
GWARNING
The front-passenger front air bag and front-passenger knee bag maybe triggered unintentionally.
There is an increased risk of injury.
XPull over and stop the vehicle safely as soon as possible, payingattention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 145).
XSwitch the ignition off.
XOpen the front passenger door.
XRemove the child and the child restraint system from the frontpassenger seat.
XMake sure that there are no objects on the seat adding to theweight.The system might otherwise detect the additional weight andinterpret the seat occupant's weight as greater than it actually is.
XKeep the seat unoccupied, close the front passenger door andswitch on the ignition.
XObserve the PASSENGER AIR BAG indicator lamps in the centerconsole and the multifunction display and check the following:
Seat unoccupied and ignition switched on:
Ra self-diagnosis is carried out. The PASSENGER AIR BAG OFFand PASSENGER AIR BAG ON indicator lamps must light upsimultaneously for approximately six seconds
Rthe PASSENGER AIR BAG OFF indicator lamp must then lightup and remain lit after the self-diagnosis. If the indicator lampis on, OCS has deactivated the front-passenger front air bagand front-passenger knee air bag (Ypage 47)
RtheFront Passenger Airbag Enabled See Operator'sFront Passenger Airbag Enabled See Operator'sManualManualorFront Passenger Airbag Disabled See Opera‐Front Passenger Airbag Disabled See Opera‐tor's Manualtor's Manualdisplay messages must not be shown on themultifunction display
XWait for a period of at least 60 seconds until the necessary sys-tem checks have been completed.
XMake sure that the display messages do not appear in the multi-function display.
Displaymessages213
On-b oard computer and displays
Z

Display messagesPossible causes/consequences andPPSolutions
If these conditions are fulfilled, the front passenger seat can beoccupied again. Whether the PASSENGER AIR BAG OFF or ON indi-cator lamp remains lit or goes out depends on how OCS classifiesthe occupant.
If the conditions are not fulfilled, the system is not operating cor-rectly.
XVisit a qualified specialist workshop immediately.
Further information about the Occupant Classification System(Ypage 47).
Lights
iVehicles with LED bulbs in the light clusters:
The display message for the corresponding lamp only appears when all of the LEDs in the lamphave failed.
Display messagesPossible causes/consequences andPPSolutions
I
Check Left Corner‐Check Left Corner‐ing Lighting LightorCheckCheckRight CorneringRight CorneringLightLight
The left or right-hand cornering light is defective.
XCheck whether you are permitted to replace the bulb yourself(Ypage 106).
or
XVisit a qualified specialist workshop.
I
Check Left LowCheck Left LowBeamBeamorCheckCheckRight Low BeamRight Low Beam
The left or right-hand low-beam headlamp is defective.
XCheck whether you are permitted to replace the bulb yourself(Ypage 106).
or
XVisit a qualified specialist workshop.
I
Check Rear LeftCheck Rear LeftTurn SignalTurn SignalorCheck Rear RightCheck Rear RightTurn SignalTurn Signal
The rear left-hand or rear right-hand turn signal is defective.
XCheck whether you are permitted to replace the bulb yourself(Ypage 106).
or
XVisit a qualified specialist workshop.
I
Check Front LeftCheck Front LeftTurn SignalTurn SignalorCheck Front RightCheck Front RightTurn SignalTurn Signal
The front left-hand or front right-hand turn signal is defective.
XCheck whether you are permitted to replace the bulb yourself(Ypage 106).
or
XVisit a qualified specialist workshop.
I
Check Left MirrorCheck Left MirrorTurn SignalTurn SignalorCheck Right MirrorCheck Right MirrorTurn SignalTurn Signal
The turn signal in the left-hand or right-hand exterior mirror is defec-tive.
XVisit a qualified specialist workshop.
214Displaymessages
On-b oard computer and displays

Display messagesPossible causes/consequences andPPSolutions
I
Check Center BrakeCheck Center BrakeLampLamp
The high-mounted brake lamp is faulty.
XVisit a qualified specialist workshop.
I
Check Left BrakeCheck Left BrakeLampLamporCheck RightCheck RightBrake LampBrake Lamp
The left or right-hand brake lamp is defective.
XCheck whether you are permitted to replace the bulb yourself(Ypage 106).
or
XVisit a qualified specialist workshop.
I
Check Left HighCheck Left HighBeamBeamorCheckCheckRight High BeamRight High Beam
The left or right-hand high beam is defective.
XCheck whether you are permitted to replace the bulb yourself(Ypage 106).
or
XVisit a qualified specialist workshop.
I
License Plate LampLicense Plate Lamp
The left or right-hand license plate lamp is faulty.
XVisit a qualified specialist workshop.
I
Check Left Fog LampCheck Left Fog LamporCheck Right FogCheck Right FogLampLamp
The left or right-hand fog lamp is faulty.
XVisit a qualified specialist workshop.
I
Rear Fog LampRear Fog Lamp
The rear fog lamp is faulty.
XCheck whether you are permitted to replace the bulb yourself(Ypage 106).
or
XVisit a qualified specialist workshop.
I
Check Front LeftCheck Front LeftParking LampParking LamporCheck Front RightCheck Front RightParking 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 106).
or
XVisit a qualified specialist workshop.
I
Backup LightBackup Light
The backup lamp is defective.
XCheck whether you are permitted to replace the bulb yourself(Ypage 106).
or
XVisit a qualified specialist workshop.
I
Check Left TailCheck Left TailLampLamporCheckCheckRight Tail LampRight Tail Lamp
The left or right-hand tail lamp is defective.
XVisit a qualified specialist workshop.
Displaymessages215
On-b oard computer and displays
Z

Display messagesPossible causes/consequences andPPSolutions
I
Check Front LeftCheck Front LeftSidemarker LampSidemarker LamporCheck Front RightCheck Front RightSidemarker LampSidemarker Lamp
The front left-hand or front right-hand side marker lamp is faulty.
XVisit a qualified specialist workshop.
I
Check Rear LeftCheck Rear LeftSidemarker LampSidemarker LamporCheck Rear RightCheck Rear RightSidemarker LampSidemarker Lamp
The rear left-hand or rear right-hand side marker lamp is faulty.
XVisit a qualified specialist workshop.
I
Check Left DaytimeCheck Left DaytimeRunning LightRunning LightorCheck Right Day‐Check Right Day‐time Running Lighttime Running Light
The left or right-hand daytime running lamp is faulty.
XCheck whether you are permitted to replace the bulb yourself(Ypage 106).
or
XVisit a qualified specialist workshop.
I
Malfunction SeeMalfunction SeeOperator's ManualOperator's Manual
The exterior lighting is malfunctioning.
XVisit a qualified specialist workshop.
I
Auto Lamp FunctionAuto Lamp FunctionInoperativeInoperative
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 warn-ing tone also sounds.
XTurn the light switch to theXposition.
I
Switch On HeadlampsSwitch On Headlamps
You are driving with low-beam headlamps switched off.
XTurn the light switch to theXorXposition.
216Displaymessages
On-b oard computer and displays

Engine
Display messagesPossible causes/consequences andPPSolutions

Display messagesPossible causes/consequences andPPSolutions
=
See Operator's Man‐See Operator's Man‐ualual
The battery is not being charged.
A warning tone also sounds.
Possible causes are:
Ra defective alternator
Ra torn poly-V-belt
Ra malfunction in the electronics
!Do not drive any further. Otherwise the engine may overheat.
XPull over and stop the vehicle safely and switch off the engine,paying attention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 145).
XConsult a qualified specialist workshop.
=
Stop Vehicle SeeStop Vehicle SeeOperator's ManualOperator's Manual
The battery is no longer being charged and the condition of chargeis too low.
A warning tone also sounds.
XPull over and stop the vehicle safely and switch off the engine,paying attention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 145).
XObserve the instructions in the display message=See Oper‐See Oper‐ator's Manualator's Manual.
XConsult a qualified specialist workshop.