heating MERCEDES-BENZ GLC 2019 User Guide

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

For safety reasons, Mercedes-Benz recom-mends only installing the following brake disksand brake pads/linings:
Rbrake disks that have been approved byMercedes-Benz
Rbrake pads/linings that have been approvedby Mercedes-Benz or that are of an equivalentstandard of quality
Other brake disks or brake pads/linings cancompromise the safety of your vehicle.
Always replace all brake disks and brake pads/linings on an axle at the same time. Alwaysinstall new brake pads/linings when replacingbrake disks.
The vehicle is equipped with lightweight brakedisks to which the wheel assembly with rim andthreaded connection is matched.
The use of brake disks other than thoseapproved by Mercedes-Benz can change thetrack width and is subject to approval, if appli-cable.
Shock-type loads when handling the brakediscs, such as when changing wheels, can leadto a reduction in comfort when driving with light-weight brake discs. Avoid shock-type loads onthe lightweight brake disks, particularly on thebrake plate.
Mercedes-Benz recommends that you only usebrake fluid that has been specially approved foryour vehicle by Mercedes-Benz, or which corre-sponds to an equivalent quality standard. Brakefluid which has not been approved forMercedes-Benz vehicles or which is not of anequivalent quality could affect your vehicle'soperating safety.
Driving on wet roads
Hydroplaning
If water has accumulated to a certain depth onthe road surface, there is a danger of hydro-planing occurring, even if:
Ryou drive at low speeds
Rthe tires have adequate tread depth
For this reason, in the event of heavy rain or inconditions in which hydroplaning may occur,you must drive in the following manner:
Rlower your speed
Ravoid ruts
Ravoid sudden steering movements
Rbrake carefully
Driving on flooded roads
!Bear in mind that vehicles traveling in frontor in the opposite direction create waves. Thismay cause the maximum permissible waterdepth to be exceeded.
Failure to observe these notes may result indamage to the engine, electrical systems andtransmission.
If you have to drive on stretches of road on whichwater has collected, please bear in mind that:
Rin the case of standing water, the water levelmay be no higher than the lower edge of thevehicle body
Ryou should drive no faster than walking pace
Winter driving
GWARNING
If you shift down on a slippery road surface in
an attempt to increase the engine's braking
effect, the drive wheels could lose their grip.
There is an increased danger of skidding and
accidents.
Do not shift down for additional engine brak-
ing on a slippery road surface.
GDANGER
If the exhaust pipe is blocked or adequate
ventilation is not possible, poisonous gases
such as carbon monoxide (CO) may enter the
vehicle. This is the case, e.g. if the vehicle
becomes trapped in snow. There is a risk of
fatal injury.
If you leave the engine or the auxiliary heating
running, make sure the exhaust pipe and area
around the vehicle are clear of snow. To
ensure an adequate supply of fresh air, open a
window on the side of the vehicle that is not
facing into the wind.
Have your vehicle winter-proofed at a qualifiedspecialist workshop at the onset of winter.
Drive particularly carefully on slippery road sur-faces. Avoid sudden acceleration, steering and
Driving tips159
Driving and parking
Z

braking maneuvers. Do not use cruise control orActive Distance Assist DISTRONIC.
If the vehicle threatens to skid or cannot bestopped when moving at low speed:
XShift the transmission to position\\.
The outside temperature indicator is notdesigned to serve as an ice-warning device andis therefore unsuitable for that purpose.Changes in the outside temperature are dis-played after a short delay.
Indicated temperatures just above the freezingpoint do not guarantee that the road surface isfree of ice. The road may still be icy, especially inwooded areas or on bridges. The vehicle couldskid if you fail to adapt your driving style. Alwaysadapt your driving style and drive at a speed tosuit the prevailing weather conditions.
You should pay special attention to road condi-tions when temperatures are around freezingpoint.
For more information on driving with snowchains, see (Ypage 332).
For more information on driving with summertires, see (Ypage 332).
Observe the notes in the "Winter operation" sec-tion (Ypage 332).
Driving systems
Mercedes-Benz Intelligent Drive
Mercedes-Benz Intelligent Drive stands for inno-vative driver assistance and safety systemswhich enhance comfort and support the driver incritical situations. With these intelligent coordi-nated systems Mercedes-Benz has set a mile-stone on the path towards autonomous driving.
Mercedes-Benz Intelligent Drive embraces allelements of active and passive safety in one wellthought out system – for the safety of the vehi-cle occupants and that of other road users.
Further information on driving safety systems(Ypage 65).
Cruise control
General notes
Cruise control maintains a constant road speedfor you. It brakes automatically in order to avoidexceeding the set speed. Change into a lower
gear in good time on long and steep downhillgradients. This is especially important if thevehicle is laden or towing a trailer. By doing so,you will make use of the braking effect of theengine. This relieves the load on the brake sys-tem and prevents the brakes from overheatingand wearing too quickly.
Use cruise control only if road and traffic con-ditions make it appropriate to maintain a steadyspeed for a prolonged period. You can store anyroad speed above 20 mph (30 km/h).
Important safety notes
Cruise control can neither reduce the risk of anaccident if you fail to adapt your driving style noroverride the laws of physics. Cruise control can-not take into account the road, traffic andweather conditions. Cruise control is only anaid. You are responsible for maintaining a safedistance to the vehicle in front, for vehiclespeed, for braking in good time and for staying inlane.
Do not use cruise control:
Rin road and traffic conditions which do notallow you to maintain a constant speed, e.g. inheavy traffic or on winding roads
Ron slippery road surfaces. Braking or accel-erating could cause the drive wheels to losetraction and the vehicle could then skid
Rwhen there is poor visibility, e.g. due to fog,heavy rain or snow
If there is a change of drivers, advise the newdriver of the speed stored.
iThe speed indicated in the speedometermay differ slightly from the speed stored.
Cruise control lever
CActivates or increases speed
DActivates or reduces speed
160Driving systems
Driving and pa rking

Active Distance Assist DISTRONIC
General notes
Active Distance Assist DISTRONIC regulates thespeed and automatically helps you maintain thedistance from the vehicle detected in front.Vehicles are detected with the aid of the radarsensor system. Active Distance AssistDISTRONIC brakes automatically so that the setspeed is not exceeded.
Change into a lower gear in good time on longand steep downhill gradients. This is especiallyimportant if the vehicle is laden. By doing so, youwill make use of the braking effect of the engine.This relieves the load on the brake system andprevents the brakes from overheating and wear-ing too quickly.
If Active Distance Assist DISTRONIC detectsthat there is a risk of a collision with the vehiclein front, you will be warned visually and audibly.Active Distance Assist DISTRONIC cannot pre-vent a collision without your intervention. Anintermittent warning tone will then sound andthe distance warning lamp will light up in theinstrument cluster. Brake immediately in orderto increase the distance to the vehicle in front ortake evasive action provided it is safe to do so.
Active Distance Assist DISTRONIC operates inthe speed range between 0 mph(0 km/h) and120 mph (200 km/h).
Do not use Active Distance Assist DISTRONICwhile driving on roads with steep gradients.
As Active Distance Assist DISTRONIC transmitsradar waves, it can resemble the radar detectorsof the responsible authorities. You can refer tothe relevant chapter in the Operator's Manual ifquestions are asked about this.
iUSA only: This device has been approved bythe FCC as a "Vehicular Radar System". Theradar sensor is intended for use in an auto-motive radar system only. Removal, tamper-ing, or altering of the device will void any war-ranties, and is not permitted by the FCC. Donot tamper with, alter, or use in any non-approved way.
Any unauthorized modification to this devicecould void the user's authority to operate theequipment.
iCanada only: This device complies withRSS-210 of Industry Canada. Operation issubject to the following two conditions:
1. This device may not cause interference,and
2. This device must accept any interferencereceived, including interference that maycause undesired operation of the device.
Removal, tampering, or altering of the devicewill void any warranties, and is not permitted.Do not tamper with, alter, or use in any non-approved way.
Any unauthorized modification to this devicecould void the user's authority to operate theequipment.
Important safety notes
GWARNING
Active Distance Assist DISTRONIC does not
react to:
Rpeople or animals
Rstationary objects in the road, e.g. stopped
or parked vehicles
Roncoming vehicles and crossing traffic
As a result, Active Distance Assist DISTRONIC
may neither give warnings nor intervene in
such situations. There is a risk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake.
GWARNING
Active Distance Assist DISTRONIC cannot
always clearly identify other road users and
complex traffic situations.
In such cases, Active Distance Assist
DISTRONIC can:
Rgive an unnecessary warning and then
brake the vehicle
Rneither give a warning nor intervene
Raccelerate or brake unexpectedly
There is a risk of an accident.
Continue to drive carefully and be ready to
brake, especially if Active Distance Assist
DISTRONIC warns you.
GWARNING
Active Distance Assist DISTRONIC brakes
your vehicle with up to 50% of the maximum
162Driving systems
Driving and parking

which the maximum permissible speed for vehi-cle/trailer combinations is above 60 mph(100 km/h).
When towing a trailer, your vehicle's handlingcharacteristics will be different in comparison towhen driving without a trailer and it will con-sume more fuel.
Shift to a lower gear on long and steep downhillgradients.
This also applies to:
Ractivated DISTRONIC PLUS
Ractivated cruise control
This will use the braking effect of the engine, sothat less braking will be required to maintain thespeed. This relieves the load on the brake sys-tem and prevents the brakes from overheatingand wearing too quickly. If you need additionalbraking, depress the brake pedal repeatedlyrather than continuously.
Driving tips
If the trailer swings from side to side:
XDo not accelerate.
XDo not counter-steer.
XBrake if necessary.
RMaintain a greater distance from the vehiclein front than when driving without a trailer.
RAvoid braking abruptly. If possible, brake gen-tly at first to allow the trailer to run on. Then,increase the braking force rapidly.
RThe values given for gradient-climbing capa-bilities from a standstill refer to sea level.When driving in mountainous areas, note thatthe power output of the engine and, conse-quently, the vehicle's gradient-climbing capa-bility, decreases with increasing altitude.
Installing the ball coupling
GWARNING
If the ball coupling is not correctly installed
and secured, it could come loose while driving
and endanger other road users. There is a risk
of an accident and injury.
Install and secure the ball coupling as descri-
bed in the ball coupling manufacturer's instal-
lation instructions. Make sure that the ball
coupling is correctly installed and secured
before every journey.
GWARNING
If the ball coupling is not installed and secured
correctly the trailer may come loose. There is
a risk of an accident.
Install and secure the ball coupling as descri-
bed in the ball coupling installation instruc-
tions. Make sure that the ball coupling is
installed and secured correctly before every
journey.
XPull protective capCin the direction of thearrow, out of the ball coupling recess.
XStow protective capCso that it cannot bethrown around.
XObserve the manufacturer's installationinstructions.
Observe the loading guidelines (Ypage 278)and the safety notes regarding stowagespaces (Ypage 278).
Coupling up a trailer
!Do not connect the trailer's brake system (iffeatured) to the hydraulic brake system of thetowing vehicle, as the latter is equipped withan anti-lock brake system. Doing so will resultin a loss of function of the brake systems ofboth the vehicle and the trailer.
XApply the vehicle's electric parking brakemanually.
XStart the engine.
XShift the transmission to position].
XVehicles with AIR BODY CONTROL:selecttheComfortdrive program.
204Towing a trailer
Driving and parking

Driving abroad
An extensive Mercedes-Benz Service network isalso available in other countries. You can obtainfurther information from any authorizedMercedes-Benz Center.
Care
General notes
!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 with hardobjects, e.g. rings or ice scrapers. Otherwise,you may scratch or damage the surfaces andfilms.
!Do not park your vehicle for a long period oftime directly after cleaning, particularly aftercleaning the wheel rim with wheel cleaner.Wheel cleaner can lead to the increased cor-rosion of the brake discs and pads. Therefore,drive for a few minutes after cleaning. Byheating up the brakes, the brake discs andpads dry. The vehicle can then be parked for along period of time.
HEnvironmental note
Dispose of empty packaging and cleaning
cloths in an environmentally responsible man-
ner.
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.
Washing the vehicle and cleaning the
paintwork
Automatic car wash
GWARNING
Braking efficiency is reduced after washing
the vehicle. There is a risk of an accident.
After the vehicle has been washed, brake
carefully while paying attention to the traffic
conditions until full braking power is restored.
!When Active Brake Assist, Active DistanceAssist DISTRONIC or the HOLD function isactivated, the vehicle brakes automatically incertain situations.
To avoid damage to the vehicle, deactivatethese systems in the following or similar sit-uations:
Rwhen towing the vehicle
Rin the car wash
!Never clean your vehicle in a TouchlessAutomatic Car Wash as these use specialcleaning agents. These cleaning agents candamage the paintwork or plastic parts.
!Make sure that:
Rthe side windows and sliding sunroof areclosed completely
Rthe blower is switched off
Rthe windshield wiper switch is in position

Cleaning the vehicle parts
Cleaning the wheels
GWARNING
The water jet from a circular jet nozzle (dirt
blasters) can cause invisible exterior damage
to the tires or chassis components. Compo-
nents damaged in this way may fail unexpect-
edly. There is a risk of an accident.
Do not use power washers with circular jet
nozzles to clean the vehicle. Have damaged
tires or chassis components replaced imme-
diately.
!Do not use acidic wheel cleaning productsto remove brake dust. This could damagewheel bolts and brake components.
!Do not park your vehicle for a long period oftime directly after cleaning, particularly aftercleaning the wheel rim with wheel cleaner.Wheel cleaner can lead to the increased cor-rosion of the brake discs and pads. Therefore,drive for a few minutes after cleaning. Byheating up the brakes, the brake discs andpads dry. The vehicle can then be parked for along period of time.
Cleaning the windows
GWARNING
You could become trapped by the windshield
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.
!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. Thereis otherwise a risk of damaging the windows.
!Clean the water drainage channels of thewindshield and the rear window at regularintervals. Deposits such as leaves, petals andpollen may under certain circumstances pre-vent water from draining away. This can lead
to corrosion damage and damage to elec-tronic components.
XClean the inside and outside of the windowswith a damp cloth and a cleaning product thatis recommended and approved by Mercedes-Benz.
Cleaning wiper blades
GWARNING
You could become trapped by the windshield
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.
!Do not pull the wiper blade. Otherwise, thewiper blade could be damaged.
!Do not clean wiper blades too often and donot rub them too hard. Otherwise, the graph-ite coating could be damaged. This couldcause wiper noise.
!Hold the wiper arm securely when foldingback. The windshield could be damaged if thewiper arm smacks against it suddenly.
XMove the wiper arms to a vertical position(Ypage 116) and fold away from the wind-shield.
XCarefully clean the wiper blades with a dampcloth.
XFold the windshield wiper arms back againbefore switching on the ignition.
Cleaning the exterior lighting
!Only use cleaning agents or cleaning clothswhich are suitable for plastic light lenses.Unsuitable cleaning agents or cleaning clothscould scratch or damage the plastic light len-ses.
XClean the plastic lenses of the exterior light-ing using a wet sponge and a mild cleaningagent, e.g. Mercedes-Benz car shampoo orcleaning cloths.
308Care
Maintenance and care

!Do not clean the seat belts using chemicalcleaning agents. Do not dry the seat belts byheating at temperatures above 176‡(80 †)or in direct sunlight.
XUse clean, lukewarm water and soap solution.
Cleaning the headliner and carpets
XHeadliner:if it is very dirty, use a soft brush ordry shampoo.
XCarpets:use the carpet and textile cleaningagents recommended and approved byMercedes-Benz.
312Care
Maintenance and care

Other designations or recommendations indi-cate a level of quality or a specification inaccordance with an MB Sheet Number (e.g. MB229.5). They have not necessarily beenapproved by Mercedes-Benz.
Other identifications, for example:
R0W-30
R5W-30
R5W-40
Fuel
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
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.
Tank capacity
ModelTotal capacity
All models17.4 US gal(66.0l)
ModelOf whichreserve
Mercedes-AMG GLC 634MATIC+ Coupe
Mercedes-AMG GLC 63S 4MATIC+ Coupe
Approx.2.6 US gal(10.0l)
All other modelsApprox.1.8 US gal (7.0l)
Gasoline
Fuel grade
!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.
!Only refuel using low-sulfur premium-gradefuel with an octane rating of at least 91 AKI/95 RON.
iE10 fuel contains up to 10% ethanol by vol-ume. Your vehicle is E10-compatible. You canrefuel your vehicle using E10 fuel.
!Only use the fuel recommended. Operatingthe vehicle with other fuels can lead to dam-age to the fuel system, engine and exhaustsystem.
!Never refuel using:
RDiesel
RGasoline with more than 10% ethanol byvolume, e.g. E15, E20, E85, E100
RGasoline with more than 3% methanol byvolume, e.g. M15, M30, M85, M100
RGasoline with metalliferous additives
Do not mix such fuels with the fuel recom-mended for your vehicle.
Service products and filling capacities359
Technical data
Z

Use only SAE 0W-40 or SAE 5W-40 engine oilsfor Mercedes-AMG vehicles.
iMB approval is indicated on the oil contain-ers.
Filling capacities
The following values refer to an oil changeincluding the oil filter.
ModelCapacity
Mercedes-AMGGLC 63 4MATIC+Coupe
Mercedes-AMGGLC 63 S 4MATIC+Coupe
9.5 US qt (9.0l)
All other models6.9 US qt (6.5l)
Additives
!Do not use any additives in the engine oil.This could damage the engine.
Brake fluid
GWARNING
The brake fluid constantly absorbs moisture
from the air. This lowers the boiling point of
the brake fluid. If the boiling point of the brake
fluid is too low, vapor pockets may form in the
brake system when the brakes are applied
hard. This would impair braking efficiency.
There is a risk of an accident.
You should have the brake fluid renewed at
the specified intervals.
When handling brake fluid, observe the impor-tant safety notes on service products(Ypage 358).
The brake fluid change intervals can be found inthe Maintenance Booklet.
Only use brake fluid approved by Mercedes-Benz in accordance with MB-Freigabe or MB-Approval 331.0.
Information on approved brake fluid can beobtained in the following places:
Rfrom an authorized Mercedes-Benz Center
Rin the Mercedes-Benz Specification for Ser-vice Products by entering the designation
-on the Internet athttp://bevo.mercedes-benz.com
-on the Mercedes-Benz BeVo app
iHave the brake fluid regularly replaced at aqualified specialist workshop in accordancewith the replacement intervals and thereplacement confirmed in the MaintenanceBooklet.
Coolant
Important safety notes
GWARNING
If antifreeze comes into contact with hot com-
ponents in the engine compartment, it may
ignite. There is a risk of fire and injury.
Let the engine cool down before you add anti-
freeze. Make sure that antifreeze is not spilled
next to the filler neck. Thoroughly clean the
antifreeze from components before starting
the engine.
!Only add coolant that has been premixedwith the desired antifreeze protection. Youcould otherwise damage the engine.
You can find additional notes on the coolant inthe following places:
Rin the Mercedes-Benz Specifications forService Products, MB BeVo 310.1
-on the Internet athttp://bevo.mercedes-benz.com
-on the Mercedes-Benz BeVo app
Ra qualified specialized workshop
!Always use a suitable coolant mixture, evenin countries where high temperatures prevail.
Otherwise, the engine cooling system is notsufficiently protected from corrosion andoverheating.
iHave the coolant regularly replaced at aqualified specialist workshop and the replace-ment confirmed in the Maintenance Booklet.
Service products and filling capacities361
Technical data
Z