2019 MERCEDES-BENZ GLC sensor

Display messagesPossible causes/consequences andPPSolutions
ActiveActiveBrakeBrakeAssistAssistFunctionsFunctionsCurrentlyCurrentlyLimited See Opera‐Limited See Opera‐tor's Manualtor's Manual
Active Brake Assist is temporarily inoperative.
Possible causes are:
Rthe radar sensor system is temporarily inoperative, e.g. due to elec-tromagnetic radiation emitted by nearby TV or radio stations orother 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 152).
XRestart the engine.
ActiveActiveBrakeBrakeAssistAssistFunctions LimitedFunctions LimitedSee Operator's Man‐See Operator's Man‐ualual
Active Brake Assist is unavailable due to a malfunction. AdaptiveBrake Assist may also have failed.
XVisit a qualified specialist workshop immediately.
PRE-SAFE Inopera‐PRE-SAFE Inopera‐tivetiveSeeSeeOperator'sOperator'sManualManual
Important functions of PRE-SAFE®have failed. All other occupantsafety systems, e.g. air bags, remain available.
XVisit a qualified specialist workshop immediately.
ActiveActiveBrakeBrakeAssistAssistFunctionsFunctionsCurrentlyCurrentlyLimited See Opera‐Limited See Opera‐tor's Manualtor's Manual
Active Brake Assist with cross-traffic function is temporarily inopera-tive.
Possible causes are:
Rfunction is impaired due to heavy rain or snow
Rthe radar sensor system is temporarily inoperative, e.g. due to elec-tromagnetic radiation emitted by nearby TV or radio stations orother sources of electromagnetic radiation
Rthe system is outside the operating temperature range
Rthe on-board voltage is too low
RMercedes-AMG vehicles: ESP®is deactivated
When the causes stated above no longer apply, the display messagedisappears.
Active Brake Assist with cross-traffic function 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 152).
XRestart the engine.
XMercedes-AMG vehicles: switch ESP®on again (Ypage 70).
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Display messagesPossible causes/consequences andPPSolutions
ActiveActiveBrakeBrakeAssistAssistFunctions LimitedFunctions LimitedSee Operator's Man‐See Operator's Man‐ualual
Active Brake Assist with cross-traffic function is unavailable due to amalfunction.
XVisit a qualified specialist workshop immediately.
RadarRadarSensorsSensorsDirtyDirtySee Operator's Man‐See Operator's Man‐ualual
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 malfunctioningor is temporarily unavailable:
RActive Brake Assist
RActive Lane Keeping Assist
RActive Blind Spot Assist
RActive Distance Assist DISTRONIC with Active Steering Assist
If the radar sensor system in front is dirty, Active Blind Spot Assist willnot perform a course-correcting brake application.
Once the cause of the problem is no longer present, the driving anddrive safety systems will be available again. The display message dis-appears.
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 152).
XSwitch off the engine.
XClean all sensors (Ypage 309).
XRestart the engine.The display message disappears.
u
SRSSRSMalfunctionMalfunctionSer‐Ser‐vice Requiredvice 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 triggeredunintentionally or, in the event of an accident, may not be triggered.
There is an increased risk of injury.
XVisit a qualified specialist workshop immediately.
Further information about the restraint system (Ypage 43).
Displaymessages235
On-b oard computer and displays
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Display messagesPossible causes/consequences andPPSolutions
Further information about the Occupant Classification System(Ypage 51).
Lights
Display messagesPossible causes/consequences andPPSolutions
I
CheckCheckLeftLeftLowLowBeamBeam(Example)
The corresponding bulb is faulty.
XVisit a qualified specialist workshop.
or
XCheck whether you are permitted to replace the bulb yourself(Ypage 114).
iLED light sources: the display message for the correspondinglamp only appears when all the LEDs in the lamp have failed.
I
Active HeadlampsActive HeadlampsInoperativeInoperative
The active light function is malfunctioning.
XVisit a qualified specialist workshop.
I
Malfunction SeeMalfunction SeeOperator’s ManualOperator’s Manual
The exterior lighting is malfunctioning.
XVisit a qualified specialist workshop.
Vehicles with trailer tow hitch: a fuse may have blown.
XPull over and stop the vehicle safely as soon as possible, payingattention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 152).
XCheck the fuses (Ypage 327).
XIf necessary, replace the blown fuse. Observe the warning notes.
If the display message remains on show:
XVisit a qualified specialist workshop.
I
Automatic HeadlampAutomatic HeadlampMode InoperativeMode Inoperative
The light sensor is malfunctioning.
XVisit a qualified specialist workshop.
I
Switch Off LightsSwitch Off Lights
You leave the vehicle and the lights are switched on. A warning tonealso 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.
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On-b oard computer and displays
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Display messagesPossible causes/consequences andPPSolutions
LaneLaneKeepingKeepingAssistAssistInoperativeInoperativeorActiveActiveLaneLaneKeepingKeepingAssist InoperativeAssist Inoperative
Lane Keeping Assist or Active Lane Keeping Assist is faulty.
XVisit a qualified specialist workshop.
Blind Spot AssistBlind Spot AssistCurrently Unavaila‐Currently Unavaila‐ble See Operator'sble See Operator'sManualManualorActiveActiveBlind Spot AssistBlind Spot AssistCurrently Unavaila‐Currently Unavaila‐ble See Operator'sble See Operator'sManualManual
Blind Spot Assist or Active Blind Spot Assist is temporarily inoperative.
Possible causes are:
Rthe radar sensor system is outside the operating temperature range
Rthe radar sensor system is temporarily inoperative, e.g. due to elec-tromagnetic radiation emitted by nearby TV or radio stations orother sources of electromagnetic radiation
When the causes stated above no longer apply, the display messagedisappears.
Blind Spot Assist or Active Blind Spot 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 152).
XRestart the engine.
Blind Spot AssistBlind Spot AssistInoperativeInoperativeorActive Blind SpotActive Blind SpotAssist InoperativeAssist Inoperative
Blind Spot Assist or Active Blind Spot Assist is faulty.
XVisit a qualified specialist workshop.
Active ParkingActive ParkingAssist CanceledAssist CanceledThe driver's door is open.
XRepeat the parking gap measurement and parking process with thedriver's door closed.
You touched the multifunction steering wheel while steering inter-vention was active.
XWhile steering intervention is active, make sure that the multifunc-tion steering wheel is not touched unintentionally.
The vehicle has started to skid and ESP®has intervened.
XUse Active Parking Assist again later (Ypage 175).
Active ParkingActive ParkingAssist InoperativeAssist InoperativeActive Parking Assist is malfunctioning or faulty.
XFollow the instructions and helpful hints in the "Problems withParking Assist PARKTRONIC" section (Ypage 182).
If the multifunction display still shows the display message:
XVisit a qualified specialist workshop.
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On-b oard computer and displays

Display messagesPossible causes/consequences andPPSolutions
Active DistanceActive DistanceAssist CurrentlyAssist CurrentlyUnavailable SeeUnavailable SeeOperator's ManualOperator's Manual
Active Distance Assist DISTRONIC is temporarily inoperative.
Active Steering Assist is also temporarily inoperative.
Possible causes are:
Rthe radar sensor system is temporarily inoperative, e.g. due to elec-tromagnetic radiation emitted by nearby TV or radio stations orother sources of electromagnetic radiation
Rthe system is outside the operating temperature range
Rthe on-board voltage is too low
A warning tone also sounds.
When the causes stated above no longer apply, the display messagedisappears.
Active Distance Assist DISTRONIC 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 152).
XRestart the engine.
Active DistanceActive DistanceAssist InoperativeAssist InoperativeActive Distance Assist DISTRONIC is defective.
The following may have also failed:
RActive Brake Assist with cross-traffic function
A warning tone also sounds.
XVisit a qualified specialist workshop.
Active DistanceActive DistanceAssist SuspendedAssist SuspendedYou have depressed the accelerator pedal. Active Distance AssistDISTRONIC is no longer controlling the speed of the vehicle.
XRemove your foot from the accelerator pedal.
Active DistanceActive DistanceAssist - - - mphAssist - - - mphA condition for activating Active Distance Assist DISTRONIC has notbeen met.
XCheck the activation conditions for Active Distance AssistDISTRONIC (Ypage 164).
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On-b oard computer and displays

Display messagesPossible causes/consequences andPPSolutions
Check TiresCheck TiresThe tire pressure in one or more tires has dropped significantly. Thewheel position is displayed in the multifunction display.
A warning tone also sounds.
GWARNING
Tire pressures that are too low pose the following hazards:
Rthey may burst, especially as the load and vehicle speed increase.
Rthey may wear excessively and/or unevenly, which may greatlyimpair tire traction.
Rthe driving characteristics, as well as steering and braking, may begreatly impaired.
There is a risk of an accident.
XStop the vehicle without making any sudden steering or brakingmaneuvers. Pay attention to the traffic conditions as you do so.
XSecure the vehicle against rolling away (Ypage 152).
XCheck the tires and, if necessary, follow the instructions for a flattire (Ypage 315).
XCheck the tire pressure (Ypage 339).
XIf necessary, correct the tire pressure.
Warning Tire Mal‐Warning Tire Mal‐functionfunctionThe tire pressure in one or more tires has dropped suddenly. The wheelposition is shown in the multifunction display.
GWARNING
Driving with a flat tire poses a risk of the following hazards:
Ra flat tire affects the ability to steer or brake the vehicle
Ryou could lose control of the vehicle
Rcontinued driving with a flat tire will cause excessive heat build-upand possibly a fire
There is a risk of an accident.
XStop the vehicle without making any sudden steering or brakingmaneuvers. Pay attention to the traffic conditions as you do so.
XSecure the vehicle against rolling away (Ypage 152).
XCheck the tires and, if necessary, follow the instructions for a flattire (Ypage 315).
TireTirePress.Press.MonitorMonitorCurrently Unavaila‐Currently Unavaila‐bleble
Because there is interference from a strong source of radio waves, nosignals from the tire pressure sensors are detected. The tire pressuremonitor is temporarily malfunctioning.
XDrive on.The tire pressure monitor restarts automatically as soon as theproblem has been resolved.
TirePress. Sen‐TirePress. Sen‐sor(s) Missingsor(s) MissingThere is no signal from the tire pressure sensor of one or several tires.The pressure of the affected tire is not displayed in the multifunctiondisplay.
XHave the faulty tire pressure sensor replaced at a qualified special-ist workshop.
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On-b oard computer and displays
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Display messagesPossible causes/consequences andPPSolutions
Tire Pressure Moni‐Tire Pressure Moni‐tor Inoperative Notor Inoperative NoWheel SensorsWheel Sensors
The wheels mounted do not have a suitable tire pressure sensor. Thetire pressure monitor is deactivated.
XMount wheels with suitable tire pressure sensors.The tire pressure monitor is activated automatically after driving fora few minutes.
TireTirePress.Press.MonitorMonitorInoperativeInoperativeThe tire pressure monitor is faulty.
XVisit a qualified specialist workshop.
Tires OverheatedTires OverheatedThe tire temperature monitoring function is not available in all vehi-cles.
At least one tire has overheated. Affected tires are shown in red. Attemperatures close to the limit value, the tires are shown in yellow.
XDrive more slowly.
Tires OverheatedTires OverheatedDecrease SpeedDecrease SpeedThe tire temperature monitoring function is not available in all vehi-cles.
At least one tire has overheated.
GWARNING
Overheated tires can burst, particularly at high speeds.
XDrive more slowly so that the tires cool down.
Vehicle
Display messagesPossible causes/consequences andPPSolutions
ShiftShifttoto'P''P'oror'N''N'to Start Engineto Start EngineYou have attempted to start the engine with the transmission in posi-tion^or[.
XShift the transmission to position]or\\.
Apply Brake toApply Brake toShift from 'P'Shift from 'P'You have attempted to shift the transmission to position[,^or\\without depressing the brake pedal.
XDepress the brake pedal.
ToToDeselectDeselectPPororN,N,Depress Brake andDepress Brake andStart EngineStart Engine
With the engine switched off, you have attempted to shift the trans-mission out of position]or\\into another transmission position.
XDepress the brake pedal.
XStart the engine.
To Engage Trans‐To Engage Trans‐miss. Position Rmiss. Position RFirst Depress theFirst Depress theBrakeBrake
You have attempted to shift from position[to position^.
XDepress the brake pedal.
XShift the transmission to position^.
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Cleaning the mirror turn signals
!Only use cleaning agents or cleaning clothsthat are suitable for plastic lenses. Unsuitablecleaning agents or cleaning cloths couldscratch or damage the plastic lenses of themirror turn signals.
XClean the plastic lenses of the mirror turn sig-nals in the exterior mirror housing using a wetsponge and mild cleaning agent, e.g.Mercedes-Benz car shampoo or cleaningcloths.
Cleaning the side running board
!Do not clean the aluminum insert of the siderunning board with alkaline or acid-basedcleaning agents, such as wheel cleaner. Donot use acidic wheel cleaners to removebrake dust. The aluminum inserts could oth-erwise be damaged.
Cleaning the sensors
!If you clean the sensors with a powerwasher, make sure that you keep a distanceof at least 11.8 in(30 cm) between the vehicleand the power washer nozzle. Informationabout the correct distance is available fromthe equipment manufacturer.
XClean sensorsCof the driving systems withwater, car shampoo and a soft cloth.
Cleaning the rear view camera and
360° Camera
!Do not clean the camera lens and the areaaround the rear view camera or 360° camerawith a power washer.
XMake sure that the vehicle is stationary.
XTurn the SmartKey to positionGorHin theignition lock (Ypage 131).
or
XPress the Start/Stop button once or twice onvehicles with KEYLESS-GO or the KEYLESS-GO start function (Ypage 132).
XOpen the camera cover for cleaning via themultimedia system (see Digital Operator'sManual).
XTo clean the camera:use clean water and asoft cloth to clean camera lensC.
When you switch off the ignition, the cameracover closes automatically.
Cleaning the exhaust pipes
GWARNING
The exhaust tail pipe and tail pipe trim can
become very hot. If you come into contact
with these parts of the vehicle, you could burn
yourself. There is a risk of injury.
Always be particularly careful around the
exhaust tail pipe and the tail pipe trim. Allow
these components to cool down before touch-
ing them.
!Do not clean the exhaust pipe with acid-based cleaning agents, such as bathroomcleaner or wheel cleaner.
!Mercedes‑AMG GLC 63 and Mercedes‑AMGGLC 63 S with black exhaust pipes: black
Care309
Maintenance and care
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