ignition MERCEDES-BENZ GLA 2019 Service Manual

Display messagesPossible causes/consequences andPPSolutions
The yellow$warning lamp lights up. The redI(USA only)or$(Canada only) indicator lamp flashes for about ten secondsafter the electric parking brake has been applied or released. It thengoes out or remains lit.
The electric parking brake is malfunctioning.
XSwitch off the ignition and turn it back on.
XApply the electric parking brake.
If it is not possible to apply the electric parking brake:
XShift the transmission to position].
XVisit a qualified specialist workshop.
If it is not possible to release the electric parking brake manually:
XRelease the electric parking brake automatically (Ypage 146).
If the electric parking brake still cannot be released:
XConsult a qualified specialist workshop.
The yellow$warning lamp lights up. If you manually apply orrelease the electric parking brake, the redI(USA only) or$(Canada only) indicator lamp flashes.
The electric parking brake is malfunctioning. It is not possible toapply the electric parking brake manually.
XShift the transmission to position]as the electric parking brakeis not applied automatically.
XVisit a qualified specialist workshop.
I(USA
only)$(Canada
only)
Parking Brake Inop‐Parking Brake Inop‐erativeerative
The yellow$warning lamp lights up. The redI(USA only)or$(Canada only) indicator lamp flashes for about ten secondsafter the electric parking brake has been applied or released. It thengoes out or remains lit.
The electric parking brake is malfunctioning, e.g. because of over-voltage or undervoltage.
XRemove the cause for the overvoltage or undervoltage, e.g. bycharging the battery or restarting the engine.
XApply or release the electric parking brake.
If it remains impossible to apply or release the electric parkingbrake:
XSwitch off the ignition and turn it back on.
XApply or release the electric parking brake.
If the electric parking brake still cannot be released:
XConsult a qualified specialist workshop.
If the electric parking brake still cannot be applied:
XVisit a qualified specialist workshop.
208Displaymessages
On-b oard computer and displays

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

Within the framework of this service, youreceive a professional and reliable form of nav-igation support without having to leave yourvehicle.
The customer service representative finds asuitable route depending on your vehicle's cur-rent position and the desired destination. Youwill then be guided live through the currentroute section.
Search and Send
General notes
iTo use "Search & Send", your vehicle mustbe equipped with Mercedes me connect anda navigation system. Additionally, aMercedes me connect service subscriptionmust be completed.
"Search & Send" is a destination entry service.A destination address found on Google Maps™can be transferred via Mercedes me connectdirectly to your vehicle's navigation system.
Specifying and sending the destination
address
XGo to the website http://www.maps.google.com and enter a destina-tion address into the entry field.
XTo send the destination address to the e-mail address of your Mercedes me con-nect account:click the corresponding but-ton on the website.
iExample:
If you select 'Send to vehicle' and then'Mercedes-Benz', the destination addresswill be sent to your vehicle.
XIf the "Send" dialog window appears:inthe corresponding field enter the e-mailaddress that you specified when setting upyour Mercedes me connect account.
XClick "Send".
iInformation on specific commands such as"Address entry" or "Send" can be found onthe website.
Calling up destination addresses
XSwitch on the ignition.The destination address is loaded into thevehicle's navigation system.
A display message appears, asking whethernavigation should be started.
XSelectYesYesby turningyRzor sliding

USA only: alternatively, the vehicle can beopened via:
Rthe Internet, under the "Owners Online" sec-tion
Rtelephone applications (e.g. for iPhone®,
Android®)
To do this, you will need your identificationnumber and password.
iVehicle remote opening is only possible ifthe corresponding mobile phone network isaccessible.
Vehicle remote closing
The vehicle valet locking feature can be usedwhen you have forgotten to lock the vehicleand you are no longer nearby.
The vehicle can then be locked by theMercedes-Benz Customer Assistance Center.
The vehicle can be immediately lockedremotely up to four days after the ignition waslast switched off. After this time, valet lockingmay be delayed by 15 to 60 minutes. After30 days the vehicle can no longer be lockedremotely.
XContact the following service hotlines:
RUSA:Mercedes-Benz Customer Assis-tance Center at 1-800-FOR-MERCedes(1-800-367-6372) or 1-866-990-9007
RCanada:Customer Service at1-888-923-8367You will be asked for your password.
The next time you are inside the vehicle andyou switch on the ignition, theDoors LockedDoors LockedRemotelyRemotelymessage will appear on the multi-function display.
USA only: alternatively, the vehicle can belocked via:
Rthe Internet, under the "Owners Online" sec-tion
Rtelephone applications (e.g. for iPhone®,
Android®)
To do this, you will need your identificationnumber and password.
iThe vehicle valet locking feature is availa-ble when the relevant mobile phone networkis available and data connection is possible.
Stolen vehicle recovery service
If your vehicle has been stolen:
XNotify the police.The police will issue a numbered incidentreport.
XThis number will be forwarded to theMercedes-Benz Customer Assistance Centertogether with your PIN.The Mercedes-Benz Customer AssistanceCenter then tries to locate the system. TheMercedes-Benz Customer Assistance Centercontacts you and the local law enforcementagency if the vehicle is located.
However, only the law enforcement agencyis informed of the location of the vehicle.
iIf the anti-theft alarm system is activatedfor longer than 30 seconds, Mercedes meconnect automatically notifies theMercedes-Benz Customer Assistance Cen-ter.
Vehicle Health Check
With the Vehicle Health Check, the CustomerAssistance Center can provide improved sup-port for problems with your vehicle. During anexisting call, vehicle data is transferred to theCustomer Assistance Center. The customerservice representative can use the receiveddata to decide what kind of assistance isrequired. You are then, for example, guided tothe nearest Mercedes-Benz Service Center ora recovery vehicle is called.
If vehicle data needs to be transferred duringan MB Info call or a Roadside Assistance call,this is initiated by the Customer AssistanceCenter. You will see theRoadside Assis‐Roadside Assis‐tance Connectedtance Connectedmessage on the multimediasystem display. If the vehicle remote malfunc-tion diagnosis can be started, theRequestRequestfor vehicle diagnosis received.for vehicle diagnosis received.Start vehicle diagnosis?Start vehicle diagnosis?messageappears in the display.
XConfirm the message withYesYes.
XWhen theVehicle diagnosis: PleaseVehicle diagnosis: Pleasestart ignitionstart ignitionmessage appears, turnthe SmartKey to position2in the ignitionlock (Ypage 125).
XWhen thePlease follow the instruc‐Please follow the instruc‐tions received by phone and movetions received by phone and moveyour vehicle to a safe positionyour vehicle to a safe positionmes-
266Features
Stowage and features

Engine compartment
Hood
Important safety notes
GWARNING
If the hood is unlatched, it may open up
when the vehicle is in motion and block your
view. There is a risk of an accident.
Never unlatch the hood while driving. Before
every trip, ensure that the hood is locked.
GWARNING
When opening and closing the hood, it may
suddenly fall into the closed position. There
is a risk of injury to persons within range of
movement of the hood.
Open and close the hood only when no one
is within its range of movement.
GWARNING
Opening the hood when the engine is over-
heated or when there is a fire in the engine
compartment could expose you to hot gases
or other service products. There is a risk of
injury.
Let an overheated engine cool down before
opening the hood. If there is a fire in the
engine compartment, keep the hood closed
and contact the fire department.
GWARNING
The engine compartment contains moving
components. Certain components, such as
the radiator fan, may continue to run or start
again suddenly when the ignition is off.
There is a risk of injury.
If you need to do any work inside the engine
compartment:
Rswitch off the ignition
Rnever reach into the area where there is a
risk of danger from moving components,
such as the fan rotation area
Rremove jewelry and watches
Rkeep items of clothing and hair, for exam-
ple, away from moving parts
GWARNING
The ignition system and the fuel injection
system work under high voltage. If you
touch components which are under voltage,
you could get an electric shock. There is a
risk of injury.
Never touch components of the ignition sys-
tem or fuel injection system when the igni-
tion is switched on.
To ensure the flow of fresh air through the airvents into the vehicle interior, please observethe following notes (Ypage 123):
Opening the hood
GWARNING
Certain components in the engine compart-
ment, such as the engine, radiator and parts
of the exhaust system, can become very
hot. Working in the engine compartment
poses a risk of injury.
Where possible, let the engine cool down
and touch only the components described in
the following.
GWARNING
When the hood is open and the windshield
wipers are set in motion, you can be injured
by the wiper linkage. There is a risk of injury.
Always switch off the windshield wipers and
the ignition before opening the hood.
!Make sure that the windshield wipers arenot folded away from the windshield. Youcould otherwise damage the windshield wip-ers or the hood.
Engine compartment273
Maintenance and care
Z

Example: engine oil cap
XTurn capCcounter-clockwise and removeit.
XAdd engine oil.If the oil level is at or below the MIN markon the oil dipstick, add 1.1 US qt (1.0 liter)of engine oil.
XReplace capCon the filler neck and turnclockwise.Ensure that the cap locks into placesecurely.
XCheck the oil level again with the oil dipstick(Ypage 274).
Further information on engine oil(Ypage 336).
Checking and adding other service
products
Checking coolant level
GWARNING
The cooling system is pressurized, particu-
larly when the motor is warm. If you open
the cap, you could be scalded if hot coolant
sprays out. There is a risk of injury.
Let the engine cool down before you open
the cap. Wear protective gloves and protec-
tive eyewear when opening. Open the cap
slowly to release pressure.
!The coolant level must only be checkedand corrected when the engine has cooleddown (coolant temperature under 104 ‡(40 †). Checking the coolant level when thecoolant temperature is over 104 ‡ (40 †)can lead to damage to the engine or theengine cooling system.
XPark the vehicle on a level surface.
Only check the coolant level when the vehi-cle is on a level surface and the engine hascooled down.
XTurn the SmartKey to positionHin the igni-tion lock (Ypage 125).
XCheck the coolant temperature display inthe instrument cluster.The coolant temperature must be below104 ‡ (40 †).
XTurn the SmartKey to positionZ(Ypage 125) in the ignition lock .
XSlowly turn capCcounter-clockwise and torelieve excess pressure.
XTurn capCfurther counter-clockwise andremove it.If the coolant is at the level of marker bar

Displaying service messages
XSwitch on the ignition.
XPress theYorebutton to select theServ.Serv.menu.
XPress thecordbutton to select theASSYST PLUSASSYST PLUSsubmenu and confirm bypressing thevbutton.The service due date appears in the multi-function display.
Information about Service
Resetting the ASSYST PLUS service
interval display
!If the ASSYST PLUS service interval dis-play has been inadvertently reset, this set-ting can be corrected at a qualified special-ist workshop.
Have service work carried out as describedin the Maintenance Booklet. This may other-wise lead to increased wear and damage tothe major assemblies or the vehicle.
A qualified specialist workshop, e.g. an author-ized Mercedes-Benz Center, will reset theASSYST PLUS service interval display after theservice work has been carried out. You canalso obtain further information on mainte-nance work, for example.
Special service requirements
The specified maintenance interval takes onlythe normal operation of the vehicle intoaccount. Under arduous operating conditionsor increased load on the vehicle, maintenancework must be carried out more frequently, forexample:
Rregular city driving with frequent intermedi-ate stops
Rif the vehicle is primarily used to travel shortdistances
Ruse in mountainous terrain or on poor roadsurfaces
Rif the engine is often left idling for long peri-ods
Rin particularly dusty conditions, or if air-recirculation mode is frequently used
In these or similar operating conditions, havethe interior filter, engine air cleaner, engine oil
and oil filter, for example, changed more fre-quently. Under arduous operating conditions,the tires must be checked more often. Furtherinformation can be obtained at a qualified spe-cialist workshop, e.g. an authorized Mercedes-Benz Center.
Driving abroad
An extensive Mercedes-Benz Service networkis also available in other countries. You canobtain further information from any authorizedMercedes-Benz Center.
Care
General notes
HEnvironmental note
Dispose of empty packaging and cleaning
cloths in an environmentally responsible
manner.
!When cleaning your car, do not use:
Rdry, coarse or hard cloths
Rabrasive cleaning agents
Rsolvents
Rcleaning agents containing solvents
Do not scrub.
Do not touch the surfaces and films withhard objects, e.g. rings or ice scrapers. Oth-erwise, you may scratch or damage the sur-faces and films.
!Do not park your vehicle for a long periodof time directly after cleaning, particularlyafter cleaning the wheel rim with wheelcleaner. Wheel cleaner can lead to theincreased corrosion of the brake discs andpads. Therefore, drive for a few minutesafter cleaning. By heating up the brakes, thebrake discs and pads dry. The vehicle canthen be parked for a long period of time.
Regular care of your vehicle is a condition forretaining the quality in the long term.
Use care products and cleaning agents recom-mended and approved by Mercedes-Benz.
278Care
Maintenance and care

Always switch off the windshield wipers and
the ignition before cleaning the windshield
or wiper blades.
!Only fold the windshield wipers away fromthe windshield when vertical. Otherwise, youwill damage the hood.
!Do not use dry cloths, abrasive products,solvents or cleaning agents containing sol-vents to clean the inside of the windows. Donot touch the insides of the windows withhard objects, e.g. an ice scraper or ring.There is otherwise a risk of damaging thewindows.
!Clean the water drainage channels of thewindshield and the rear window at regularintervals. Deposits such as leaves, petalsand pollen may under certain circumstancesprevent water from draining away. This canlead to corrosion damage and damage toelectronic components.
XClean the inside and outside of the windowswith a damp cloth and a cleaning productthat is recommended and approved byMercedes-Benz.
Cleaning wiper blades
GWARNING
You could become trapped by the wind-
shield wipers if they start moving while
cleaning the windshield or wiper blades.
There is a risk of injury.
Always switch off the windshield wipers and
the ignition before cleaning the windshield
or wiper blades.
!Only fold the windshield wipers away fromthe windshield when vertical. Otherwise, youwill damage the hood.
!Do not pull the wiper blade. Otherwise, thewiper blade could be damaged.
!Do not clean wiper blades too often anddo not rub them too hard. Otherwise, thegraphite coating could be damaged. Thiscould cause wiper noise.
!Hold the wiper arm securely when foldingback. The windshield could be damaged ifthe wiper arm smacks against it suddenly.
XFold the windshield wiper arms away fromthe windshield.
XCarefully clean the wiper blades with adamp cloth.
XFold the windshield wiper arms back againbefore switching on the ignition.
Cleaning the exterior lighting
!Only use cleaning agents or cleaningcloths that are suitable for plastic lenses.Caustic, irritant or otherwise unsuitablecleaning agents or cleaning cloths couldscratch or damage the exterior lighting plas-tic lenses.
XClean the plastic lenses of the exterior lightswith a wet sponge and a mild cleaningagent, e.g. Mercedes-Benz car shampoo orcleaning cloths.
Cleaning the mirror turn signals
!Only use cleaning agents or cleaningcloths that are suitable for plastic lenses.Unsuitable cleaning agents or cleaningcloths could scratch or damage the plasticlenses of the mirror turn signals.
XClean the plastic lenses of the mirror turnsignals in the exterior mirror housing using awet sponge and mild cleaning agent, e.g.Mercedes-Benz car shampoo or cleaningcloths.
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 vehi-cle and the power washer nozzle. Informa-tion about the correct distance is availablefrom the equipment manufacturer.
282Care
Maintenance and care

XClean sensorsCof the driving systemswith water, car shampoo and a soft cloth.
Cleaning the rear view camera
!Do not clean the camera lens and the areaaround the rear view camera with a powerwasher.
XMake sure that the vehicle is at a standstilland the SmartKey is in positionHin theignition lock.
XOpen the camera cover for cleaning via themultimedia system (see Digital Operator'sManual).
XTo clean the rear view camera:use clearwater and a soft cloth to clean cameralensC.
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 burns.
Always be particularly careful and supervise
children closely around the exhaust pipe and
the exhaust pipe trims. Allow these compo-
nents to cool down before touching them.
!Do not clean the exhaust pipe with acid-based cleaning agents, such as bathroomcleaner or wheel cleaner.
!Mercedes‑AMG vehicles with black tail-pipes: black chrome trims must not be pol-ished with a chrome polish as this will causethem to lose their black shine. For optimalcare, the faceplates should be rubbed with alightly oiled cloth after every car wash. Com-mercially available engine oils and care oilsare suitable for use.
For heavier soiling, you can apply a finepaintwork polish with a microfiber cloth.Remove the excess polish residue after pol-ishing.
Impurities combined with the effects of roadgrit and corrosive environmental factors maycause flash rust to form on the surface. Youcan restore the original shine of the exhaustpipe by cleaning it regularly, especially in win-ter and after washing.
XClean the exhaust pipe with a care producttested and approved by Mercedes-Benz.
Interior care
Cleaning the display
!For cleaning, do not use any of the follow-ing:
Ralcohol-based thinner or gasoline
Rabrasive cleaning agents
Rcommercially-available household clean-ing agents
These may damage the display surface. Donot put pressure on the display surface
Care283
Maintenance and care
Z