ignition MERCEDES-BENZ GLC 2019 Owner's Guide

Problems with the transmission
ProblemPossible causes/consequences andPPSolutions
The transmission hasproblems shifting gear.The transmission is losing oil.
XHave the transmission checked at a qualified specialist workshopimmediately.
The acceleration abilityis deteriorating.
The transmission no lon-ger changes gear.
The transmission is in emergency mode.
It is possible to shift to a gear and reverse gear only.
XStop the vehicle.
XShift the transmission to position].
XSwitch off the engine.
XWait at least ten seconds before restarting the engine.
XShift the transmission to position[or^.If[is selected, the transmission only shifts to one gear; if^isselected, the transmission shifts to reverse gear.
XHave the transmission checked at a qualified specialist workshopimmediately.
Transfer case
This section is only valid for vehicles with 4-wheel drive (4MATIC). Power is always trans-mitted to both axles.
!Performance tests may only be carried outon a 2-axle dynamometer. The brake systemor transfer case could otherwise be damaged.Contact a qualified specialist workshop for aperformance test.
!Since ESP®engages automatically, the igni-tion must be switched off (the SmartKey orStart/Stop button must be in positionZorG) if
Rthe electrical parking brake is being testedusing a dynamometer
Rthe vehicle is being towed with only oneaxle raised (not permitted for vehicles with4MATIC)
Otherwise, the brake system can be dam-aged.
!Vehicles with 4MATIC must not be towedwith either the front or the rear axle raised, asdoing so will damage the transmission.
Refueling
Important safety notes
GWARNING
Fuel is highly flammable. Risk of fire and
explosion by improper handling of fuel.
You must avoid fire, open flames, smoking
and creating sparks. Switch off the ignition
before refueling and, if present, switch off the
auxiliary heating.
GWARNING
Fuel is poisonous and hazardous to health.
There is a risk of injury.
You must make sure that fuel does not come
into contact with your skin, eyes or clothing
and that it is not swallowed. Do not inhale fuel
vapors. Keep fuel away from children.
If you or others come into contact with fuel,
observe the following:
RWash away fuel from skin immediately
using soap and water.
RIf fuel comes into contact with your eyes,
immediately rinse them thoroughly with
150Refueling
Driving and parking

clean water. Seek medical assistance with-
out delay.
RIf fuel is swallowed, seek medical assis-
tance without delay. Do not induce vomit-
ing.
RImmediately change out of clothing which
has come into contact with fuel.
GWARNING
Electrostatic charge can cause sparks and
thereby ignite fuel vapors. There is a risk of
fire and explosion.
Before you open the fuel filler cap or take hold
of the pump nozzle, touch the metallic vehicle
body. This discharges any electrostatic
charge that may have built up.
Do not get into the vehicle again during the
refueling process. Otherwise, electrostatic
charge could build up again.
Do not get into the vehicle again during the refu-eling process. Otherwise electrostatic chargecould build up again.
!Do not use diesel to refuel vehicles with agasoline engine. Do not switch on the ignitionif you accidentally refuel with the wrong fuel.Otherwise, the fuel will enter the fuel system.Even small amounts of the wrong fuel couldresult in damage to the fuel system and theengine. Notify a qualified specialist workshopand have the fuel tank and fuel lines drainedcompletely.
!Overfilling the fuel tank could damage thefuel system.
!Take care not to spill any fuel on paintedsurfaces. You could otherwise damage thepaintwork.
!Use a filter when adding fuel from a fuel can.The fuel lines and/or the fuel injection systemcould otherwise be blocked by particles fromthe fuel can.
If you overfill the fuel tank, fuel could spray outwhen the fuel pump nozzle is removed.
For further information on fuel and fuel quality(Ypage 358).
Refueling
General information
Pay attention to the important safety notes(Ypage 150).
If you unlock/lock the vehicle from the outside,the fuel filler flap also unlocks/locks.
The position of the

Electric parking brake
General notes
GWARNING
If you leave children unsupervised in the vehi-
cle, they could set it in motion by, for example:
Rrelease the parking brake.
Rshift the automatic transmission out of the
parking positionP.
Rstart the engine.
In addition, they may operate vehicle equip-
ment and become trapped. There is a risk of
an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
The function of the electric parking brake isdependent on the on-board voltage. If the on-board voltage is low or there is a malfunction inthe system, it may not be possible to apply thereleased parking brake.
XIf this happens, park the vehicle on levelground only and secure it to prevent it fromrolling away.
XShift the transmission to position].
It may not be possible to release an appliedparking brake if the on-board voltage is low orthere is a malfunction in the system. Contact aqualified specialist workshop.
The electric parking brake performs a functiontest at regular intervals while the engine isswitched off. The sounds that can be heard whilethis is occurring are normal.
Applying or releasing manually
XTo apply:push handleC.When the electric parking brake is applied,the redI(USA only) or$(Canadaonly) indicator lamp lights up in the instru-ment cluster.
The electric parking brake can also be appliedwhen the SmartKey is removed.
XTo release:pull handleC.The redI(USA only) or$(Canadaonly) indicator lamp in the instrument clustergoes out.
The electric parking brake can only be released:
Rif the SmartKey is in positionGorHin theignition lock (Ypage 131) or
Rif the ignition was switched on using theStart/Stop button
Applying automatically
The electric parking brake is automaticallyapplied when the transmission is in position]and:
Rthe engine is switched off or
Rthe driver is not wearing a seat belt and thedriver's door is opened
To prevent the electric parking brake from beingautomatically applied, pull handleC.
The electric parking brake is also applied auto-matically if:
RActive Distance Assist DISTRONIC brings thevehicle to a standstill or
Rthe HOLD function is keeping the vehicle sta-tionary
RActive Parking Assist is keeping the vehiclestationary
In addition, at least one of the following condi-tions must be fulfilled:
Rthe engine is switched off
Rthe driver is not wearing a seat belt and thedriver's door is opened
Rthere is a system malfunction
Rthe power supply is insufficient
Rthe vehicle is stationary for a lengthy period
The redI(USA only) or$(Canada only)indicator lamp on the instrument cluster lightsup.
The electric parking brake is not automaticallyapplied if the engine is switched off by the ECOstart/stop function.
154Parking
Driving and parking

Releasing automatically
Your vehicle's electric parking brake is auto-matically released if all of the following condi-tions are met:
Rthe seat belt has been fastened
Rthe engine is running
Rthe transmission is in position[or^andyou accelerate
or
you shift from transmission position]toposition[or^. On steeper uphill gradi-ents, you must also depress the acceleratorpedal.
If the transmission is in position^, the tailgatemust be closed.
If your seat belt is not fastened, the followingconditions must be fulfilled to automaticallyrelease the electric parking brake:
RThe driver's door is closed.
RYou have shifted out of transmission position]or you have previously driven faster than2 mph (3 km/h).
Ensure that you do not depress the acceleratorpedal unintentionally. Otherwise, the parkingbrake will be released and the vehicle will startto move.
Emergency braking
The vehicle can also be braked during an emer-gency by using the electric parking brake.
XWhile driving, push handleCof the electricparking brake (Ypage 154).The vehicle is braked as long as you keephandleCof the electric parking brakedepressed. The longer electric parking brakehandleCis depressed, the greater the brak-ing force.
During braking:
Ra warning tone sounds
RthePlease Release Parking BrakePlease Release Parking Brakemes-sage appears
Rthe redI(USA only) or$(Canadaonly) indicator lamp in the instrument clusterflashes
When the vehicle has been braked to a stand-still, the electric parking brake is applied.
Parking the vehicle for a long period
If you leave the vehicle parked for longer thanfour weeks, the battery may be damaged byexhaustive discharging.
If you leave the vehicle parked for longer than sixweeks, the vehicle may suffer damage as aresult of lack of use.
XVisit a qualified specialist workshop and seekadvice.
iYou can obtain information about tricklechargers from a qualified specialist work-shop.
Driving tips
General driving tips
Important safety notes
GWARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could affect,
for example, the power steering and the brake
boosting effect. You will require considerably
more effort to steer and brake. There is a risk
of an accident.
Do not switch off the ignition while driving.
GWARNING
If you operate mobile communication equip-
ment when driving, you may be distracted
from the traffic situation. You could also lose
control of the vehicle. There is a risk of an
accident.
Only operate this equipment when the vehicle
is stationary.
Observe the legal requirements for the countryin which you are driving. Some jurisdictions pro-hibit the driver from using a mobile phone whiledriving a vehicle.
If you make a call while driving, always usehands-free mode. Only operate the telephonewhen the traffic situation permits. If you areunsure, pull over to a safe location and stopbefore operating the telephone.
Driving tips155
Driving and parking
Z

This helps you to avoid overheating thebrakes and wearing them out excessively.
When you take advantage of engine braking, adrive wheel may not turn for some time, e.g.on a slippery road surface. This could causedamage to the drive train. This type of damageis not covered by the Mercedes-Benz war-ranty.
Heavy and light loads
GWARNING
If you rest your foot on the brake pedal while
driving, the braking system can overheat. This
increases the stopping distance and can even
cause the braking system to fail. There is a
risk of an accident.
Never use the brake pedal as a footrest. Never
depress the brake pedal and the accelerator
pedal at the same time.
!Depressing the brake pedal constantlyresults in excessive and premature wear tothe brake pads.
If the brakes have been subjected to a heavyload, do not stop the vehicle immediately. Driveon for a short while. This allows the airflow tocool the brakes more quickly.
Wet roads
If you have driven for a long time in heavy rainwithout braking, there may be a delayed reac-tion from the brakes when braking for the firsttime. This may also occur after the vehicle hasbeen washed or driven through deep water.
You have to depress the brake pedal morefirmly. Maintain a greater distance from thevehicle in front.
After driving on a wet road or having the vehiclewashed, brake firmly while paying attention tothe traffic conditions. This will warm up thebrake discs, thereby drying them more quicklyand protecting them against corrosion.
Limited braking performance on salt-
treated roads
If you drive on salted roads, a layer of salt resi-due may form on the brake discs and brakepads. This can result in a significantly longerbraking distance.
RIn order to prevent any salt build-up, apply thebrakes occasionally while paying attention tothe traffic conditions.
RCarefully depress the brake pedal and thebeginning and end of a journey.
RMaintain a greater distance to the vehicleahead.
Servicing the brakes
!The brake fluid level may be too low, if:
Rif the red brake warning lamp lights up inthe instrument cluster and
Ryou hear a warning tone while the engine isrunning
Observe additional warning messages in themultifunction display.
The brake fluid level may be too low due tobrake pad wear or leaking brake lines.
Have the brake system checked immediately.Consult a qualified specialist workshop toarrange this.
!Vehicles with 4MATIC:function or per-formance tests may only be carried out on a 2-axle dynamometer. If you wish to operate thevehicle on such a dynamometer, please con-sult a qualified specialist workshop inadvance. You could otherwise damage thedrive train or the brake system.
!Vehicles with 4MATIC:the ESP®systemoperates automatically. If the electric parkingbrake is tested on a brake dynamometer, theengine and ignition must be switched off: turnthe SmartKey in the ignition lock to position

S(Sport)Rthe suspension setting ismore taut
Rthe vehicle is set to low level
RMercedes-AMG GLC 634MATIC+/GLC 63 S4MATIC+:the 4MATIC+ issynchronised more dynami-cally
S+(SportPlus)
Mercedes-AMG GLC63 4MATIC+/GLC63 S4MATIC+:RACE
Rthe suspension setting iseven more taut
Rthe vehicle is set to low level
RMercedes-AMG GLC 634MATIC+/GLC 63 S4MATIC+:the 4MATIC+ issynchronised more dynami-cally
Important safety notes
GWARNING
When the vehicle is being lowered, people
could become trapped if their limbs are
between the vehicle body and the wheels or
underneath the vehicle. There is a risk of
injury.
Make sure no one is underneath the vehicle or
in the immediate vicinity of the wheel arches
when the vehicle is being lowered.
iIf one of the doors is open, the vehicle is notlowered.
Vehicle level
Setting the raised vehicle level
Mercedes-AMG vehicles:it is possible tochoose between the "Normal" and "Raised"
vehicle levels below a speed of 30 mph(50 km/h). Select the "Normal" setting for nor-mal road surfaces and "Raised" for driving withsnow chains or on particularly poor road surfa-ces. Your selection remains stored even if youremove the SmartKey from the ignition lock.
All other models:it is possible to choosebetween the "Normal" and "Raised" vehicle lev-els below a speed of 50 mph (80 km/h). Selectthe "Normal" setting for normal road surfacesand "Raised" for driving with snow chains or onparticularly poor road surfaces. Your selectionremains stored even if you remove the Smart-Key from the ignition lock.
XStart the engine.
If indicator lampDis not lit:
XPress buttonC.Indicator lampDlights up.
The vehicle is set to high level.
TheVehicleVehicleRisingRisingmessage appears in themultifunction display.
iThe message disappears after ten seconds,irrespective of the level reached. If necessary,the vehicle is raised further.
Mercedes-AMG GLC 43 4MATIC:the "Raisedlevel" setting is canceled if you:
Rdrive at speeds greater than 44 mph(70 km/h)
Rdrive for approximately three minutes atspeeds greater than 37 mph (60 km/h)
Mercedes-AMG GLC 63 4MATIC+/GLC 63 S4MATIC+:the "Raised level" setting is canceledif you:
Rdrive at speeds greater than 44 mph(70 km/h)
Rdrive for approximately three minutes atspeeds greater than 37 mph (60 km/h)
All other models:the "Raised level" setting iscanceled if you:
Rdrive faster than 75 mph (120 km/h)
Rdrive for approximately three minutes at aspeed above 50 mph (80 km/h)
The "Raised level" remains active when you arenot driving within these speed ranges.
Setting the normal vehicle level
XStart the engine.
Driving systems173
Driving and parking
Z

Parking Assist PARKTRONIC is only an aid. It isnot a replacement for your attention to yourimmediate surroundings. You are alwaysresponsible for safe maneuvering, parking andexiting a parking space. Make sure that thereare no persons, animals or objects in the maneu-vering area while maneuvering and parking in/leaving parking spaces.
!When parking, pay particular attention toobjects above or below the sensors, such asflower pots or trailer drawbars. Parking AssistPARKTRONIC does not detect such objectswhen they are in the immediate vicinity of thevehicle. You could damage the vehicle or theobjects.
The sensors may not detect snow and otherobjects that absorb ultrasonic waves.
Ultrasonic sources such as an automatic carwash, the compressed-air brakes of a truck ora pneumatic drill could cause Parking AssistPARKTRONIC to malfunction.
Parking Assist PARKTRONIC may not functioncorrectly on uneven terrain.
!If you do not need the trailer tow hitch,remove the detachable ball coupling. ParkingAssist PARKTRONIC measures the minimumdetection range to an obstacle from thebumper, not the ball coupling.
Parking Assist PARKTRONIC is activated auto-matically when you:
Rswitch on the ignition
Rshift the transmission to position[,^or\\
Parking Assist PARKTRONIC is deactivated atspeeds above 11 mph (18 km/h). It is reactiva-ted at lower speeds.
Parking Assist PARKTRONIC is deactivated forthe rear area when you establish an electricalconnection between your vehicle and a trailer.
Range of the sensors
Parking Assist PARKTRONIC does not take intoaccount obstacles located:
Rbelow the detection range, such as persons,animals or objects
Rabove the detection range, e.g. overhangingloads, tail sections or loading ramps of trucks
CSensors in the front bumper, left-hand side(example)
CApprox. 24 in (approx. 60 cm) (corners)
DApprox. 32 in (approx. 80 cm) (corners)

Problems with Parking Assist PARKTRONIC
ProblemPossible causes/consequences andPPSolutions
Only the red segments inthe Parking AssistPARKTRONIC warningdisplays are lit. You alsohear a warning tone forapproximately two sec-onds.
Parking AssistPARKTRONIC is thendeactivated and the indi-cator lamp on thePARKTRONIC buttonlights up.
Parking Assist PARKTRONIC has malfunctioned and has been deacti-vated.
XIf problems persist, have Parking Assist PARKTRONIC checked at aqualified specialist workshop.
Only the red segments inthe Parking AssistPARKTRONIC warningdisplays are lit. ParkingAssist PARKTRONIC isthen deactivated.
The Parking Assist PARKTRONIC sensors are dirty or there is inter-ference.
XClean the Parking Assist PARKTRONIC sensors (Ypage 309).
XSwitch the ignition back on.
The problem may be caused by an external source of radio or ultra-sound waves.
XCheck to see if Parking Assist PARKTRONIC works at a differentlocation.
Rear view camera
General notes
Rear view cameraCis an optical parking andmaneuvering aid. It shows the area behind thevehicle with guide lines in the multimedia sys-tem.
The area behind the vehicle is displayed as amirror image, as in the rear view mirror.
iThe text shown in the multimedia systemdepends on the language setting. The follow-
ing are examples of rear view camera displaysin the multimedia system.
Important safety notes
The rear view camera is only an aid. It is not areplacement for your attention to your immedi-ate surroundings. You are always responsiblefor safe maneuvering and parking. Make surethat there are no persons, animals or objects inthe maneuvering area while maneuvering andparking in parking spaces.
Under the following circumstances, the rearview camera will not function, or will function ina limited manner:
Rif the tailgate is open
Rin heavy rain, snow or fog
Rat night or in very dark places
Rif the camera is exposed to very bright light
Rif the area is lit by fluorescent bulbs or LEDlighting (the display may flicker)
182Driving systems
Driving and parking

If you select the reverse gear, Active Blind SpotAssist is not operational.
The brightness of the warning lamps is auto-matically adapted to the brightness of the sur-roundings.
When Active Blind Spot Assist is activated, grayradar waves propagating backward appear nextto the vehicle in the assistance display in themultifunction display. Above a speed of 20 mph(30 km/h), the color of the radar waves in theassistance display changes to greenD. ActiveBlind Spot Assist is then ready for use.
Collision warning from visual warning and
warning tone
If you switch on the turn signal to change lanesand a vehicle is detected in the side monitoringrange, you receive a visual warning and a warn-ing tone as a collision warning. You will thenhear a double warning tone and red warninglampCflashes. If the turn signal remains on,detected vehicles are indicated by the flashingof red warning lampC. No further warning tonesounds.
Course-correcting brake application
If Active Blind Spot Assist detects a risk of a lat-eral collision in the monitoring range, a course-correcting brake application is carried out. Thisis meant to assist you in avoiding a collision.
GWARNING
A course-correcting brake application cannot
always prevent a collision. There is a risk of an
accident.
Always steer, brake or accelerate yourself,
especially if Active Blind Spot Assist warns
you or makes a course-correcting brake appli-
cation. Always maintain a safe distance at the
sides.
If a course-correcting brake application occurs,red warning lampCflashes in the exterior mir-ror and a double warning tone sounds. In addi-tion, a display underlining the danger of a sidecollision appears in the multifunction display.
In very rare cases, the system may make aninappropriate brake application. A course-cor-recting brake application may be interrupted atany time by countersteering slightly or acceler-ating.
The course-correcting brake application is avail-able in the speed range between 20 mph(30 km/h) and 120 mph (200 km/h).
Either no braking application, or a course-cor-recting brake application adapted to the drivingsituation occurs if:
Rthere are vehicles or obstacles, e.g. crashbarriers, located on both sides of your vehicle.
Ra vehicle approaches you too closely at theside.
Ryou have adopted a sporty driving style withhigh cornering speeds.
Ryou clearly brake or accelerate.
Ra driving safety system intervenes, e.g. ESP®
or PRE-SAFE®Brake.
RESP®is switched off
Ra loss of tire pressure or a defective tire isdetected.
Switching on Active Blind Spot Assist
XMake sure that Active Blind Spot Assist isactivated in the on-board computer(Ypage 220).
XSwitch on the ignition.Warning lampsCin the exterior mirrors lightup red for approximately 1.5 seconds.
Gray radar waves propagating backwardsDappear next to the vehicle on the assistantdisplay on the multifunction display.
Above a speed of 20 mph (30 km/h), the colorof the radar waves on the assistant displaychanges to greenD. Active Blind Spot Assistis then ready for use.
Towing a trailer
When you attach a trailer, make sure you havecorrectly established the electrical connection.This can be accomplished by checking the trailerlighting. Active Blind Spot Assist is then deacti-vated. Radar wavesDnext to the vehicle arehidden in the assistance graphic. TheActiveActiveBlind Spot Asst. Not Available WhenBlind Spot Asst. Not Available When
Driving systems199
Driving and parking
Z

Display messagesPossible causes/consequences andPPSolutions
The yellow$warning lamp and the redI(USA only) or$(Canada only) indicator lamp light up.
The electric parking brake is malfunctioning.
To release:
XSwitch off the ignition and turn it back on.
XRelease the electric parking brake manually.
or
XRelease the electric parking brake automatically (Ypage 155).
If the electric parking brake still cannot be released:
XDo not drive on.
XConsult a qualified specialist workshop.
The redI(USA only) or$(Canada only) indicator lamp flashesand the yellow$warning lamp lights up.
The electric parking brake is malfunctioning.
To release:
XSwitch off the ignition and turn it back on.
XRelease the electric parking brake manually.
To apply:
XSwitch off the ignition and turn it back on.
XApply the electric parking brake manually.
If the redI(USA only) or$(Canada only) indicator lamp con-tinues to flash:
XDo not drive on.
XSecure the vehicle against rolling away (Ypage 351).
XShift the transmission to position].
XTurn the front wheels towards the curb.
XConsult a qualified specialist workshop.
Displaymessages231
On-b oard computer and displays
Z