2019 MERCEDES-BENZ CLA ESP

Display messagesPossible causes/consequences andPPSolutions
FrontFrontPassengerPassengerAir‐Air‐bag Enabled Seebag Enabled SeeOperator's ManualOperator's Manual
The front-passenger air bag and front-passenger knee bag are enabledduring 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 weight onthe 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 142).
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 theweight.The system might otherwise detect the additional weight and inter-pret 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 OFF andPASSENGER AIR BAG ON indicator lamps must light up simulta-neously for approximately six seconds.
Rthe PASSENGER AIR BAG OFF indicator lamp must then light upand remain lit after the self-diagnosis. If the indicator lamp is on,OCS has deactivated the front-passenger front air bag and front-passenger knee air bag (Ypage 48)
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'stor'sManualManualdisplay messages must not be shown on the mul-tifunction display
XWait for a period of at least 60 seconds until the necessary systemchecks 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 be occu-pied again. Whether the PASSENGER AIR BAG OFF or ON indicatorlamp remains lit or goes out depends on how OCS classifies the occu-pant.
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On-b oard computer and displays
Z

Display messagesPossible causes/consequences andPPSolutions
If the conditions are not fulfilled, the system is not operating correctly.
XVisit a qualified specialist workshop immediately.
Further information about the Occupant Classification System(Ypage 48).
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 105).
or
XVisit a qualified specialist workshop.
I
CheckCheckLeftLeftLowLowBeamBeamorCheck Right LowCheck Right LowBeamBeam
The left or right-hand low-beam headlamp is defective.
XCheck whether you are permitted to replace the bulb yourself(Ypage 105).
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 105).
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 105).
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.
I
Check Center BrakeCheck Center BrakeLampLamp
The high-mounted brake lamp is faulty.
XVisit a qualified specialist workshop.
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On-b oard computer and displays

Display messagesPossible causes/consequences andPPSolutions
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 105).
or
XVisit a qualified specialist workshop.
I
CheckCheckLeftLeftTailTailandandBrake LampsBrake LampsorCheck Right TailCheck Right Tailand Brake Lampsand Brake Lamps
The left or right-hand tail lamp/brake lamp is defective.
XCheck whether you are permitted to replace the bulb yourself(Ypage 105).
or
XVisit a qualified specialist workshop.
I
CheckCheckLeftLeftHighHighBeamBeamorCheck RightCheck RightHigh BeamHigh Beam
The left or right-hand high beam is defective.
XCheck whether you are permitted to replace the bulb yourself(Ypage 105).
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
Rear Fog LampRear Fog Lamp
The rear fog lamp is faulty.
XCheck whether you are permitted to replace the bulb yourself(Ypage 105).
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 105).
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 105).
or
XVisit a qualified specialist workshop.
I
Check Left TailCheck Left TailLampLamporCheck RightCheck RightTail LampTail Lamp
The left or right-hand tail lamp is defective.
XVisit a qualified specialist workshop.
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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 LightorCheckCheckRightRightDaytimeDaytimeRunning LightRunning Light
The left or right-hand daytime running lamp is faulty.
XCheck whether you are permitted to replace the bulb yourself(Ypage 105).
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 warningtone 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.
Adaptive HighbeamAdaptive HighbeamAssist CurrentlyAssist CurrentlyUnavailable SeeUnavailable SeeOperator'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, theAdaptiveAdaptiveHighbeamHighbeamAssistAssistNowNowAvailableAvailablemessage is displayed.
Adaptive Highbeam Assist is operational again.
Adaptive HighbeamAdaptive HighbeamAssist InoperativeAssist InoperativeAdaptive Highbeam Assist is faulty.
XVisit a qualified specialist workshop.
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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, pay-ing attention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 142).
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 charge istoo low.
A warning tone also sounds.
XPull over and stop the vehicle safely and switch off the engine, pay-ing attention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 142).
XObserve the instructions in the display message=See Oper‐See Oper‐ator's Manualator's Manual.
XConsult a qualified specialist workshop.

Display messagesPossible causes/consequences andPPSolutions

Display messagesPossible causes/consequences andPPSolutions
LaneLaneKeepingKeepingAssistAssistCurrently Unavaila‐Currently Unavaila‐ble See Operator'sble See Operator'sManualManual
Lane Keeping 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
Rthere have been no lane markings for an extended period
Rthe lane markings are worn away, dark or covered up, e.g. by dirt orsnow
When the causes stated above no longer apply, the display messagedisappears.
Lane Keeping 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 142).
XClean the windshield.
LaneLaneKeepingKeepingAssistAssistInoperativeInoperativeLane Keeping Assist is defective.
XVisit a qualified specialist workshop.
Blind Spot AssistBlind Spot AssistCurrently Unavaila‐Currently Unavaila‐ble See Operator'sble See Operator'sManualManual
Blind Spot 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 radar sensor system is outside the operating temperature range
The yellowcindicator lamps also light up in the exterior mirrors.
When the causes stated above no longer apply, the display messagedisappears.
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 142).
XRestart the engine.
Blind Spot AssistBlind Spot AssistInoperativeInoperativeBlind Spot Assist is malfunctioning.
The yellowcindicator lamps also light up in the exterior mirrors.
XVisit a qualified specialist workshop.
Active ParkingActive ParkingAssist CanceledAssist CanceledThe driver's door is open and the driver's seat belt has not been fas-tened.
XRepeat the parking process with the seat belt fastened and thedriver's door closed.
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