2018 MERCEDES-BENZ GLC COUPE brake fluid

Pulling away ................................... 133
Starting the engine ........................ 132
Steering wheel paddle shifters ...... 146
Trailer towing ................................. 144
Transmission position display
(DIRECT SELECT lever) ................... 142
Transmission positions .................. 142
Automatic transmission emer-
gency mode ....................................... 149
Axle load, permissible (trailer tow-
ing) ...................................................... 368
B
Back button ....................................... 267
Backup lamp
Display message ............................ 237
Bag hook ............................................ 282
Ball coupling
Installing ........................................ 202
Removing ....................................... 204
BAS (Brake Assist System) ................. 66
Battery (SmartKey)
Checking .......................................... 80
Important safety notes .................... 80
Replacing ......................................... 80
Battery (vehicle)
Charging ........................................ 324
Display message ............................ 239
Important safety notes .................. 322
Jump starting ................................. 325
Belt warning ......................................... 48
Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 218
Display message ............................ 244
Notes/function .............................. 191
see Active Blind Spot Assist
Blower
see Climate control
Bluetooth
®
Searching for a mobile phone ........ 273
see also Digital Operator's Man-
ual .................................................. 266
Brake
Active Brake Assist with cross-
traffic function ................................. 72 Brake Assist
see BAS (Brake Assist System)
Brake assistance
see BAS (Brake Assist System)
Brake fluid
Display message ............................ 231
Notes ............................................. 364
Brake force distribution
see EBD (electronic brake force
distribution)
Brake linings
Display message ............................ 231
Brakes
ABS .................................................. 65
Adaptive Brake Assist ...................... 67
BAS .................................................. 66
Brake fluid (notes) ......................... 364
Display message ............................ 226
EBD .................................................. 72
Hill start assist ............................... 134
HOLD function ............................... 168
Important safety notes .................. 156
Maintenance .................................. 157
Parking brake ................................ 153
Riding tips ...................................... 156
Warning lamp ................................. 256
Breakdown assistance
Where will I find...? ........................ 316
see Flat tire
see Towing away
Brightness control (instrument
cluster lighting) ................................... 35
Buttons o
n the steering wheel ......... 207
C
California
Important notice for retail cus-
tomers and lessees .......................... 28
Calling up a malfunction
see Display messages
Calling up the climate control bar
Multimedia system ........................ 271
Calling up the climate control
menu
Multimedia system ........................ 271
Camera
see 360° camera
6Index

Adjusting the 4-way lumbar sup-
port ................................................ 100
Adjusting the head restraint ............ 98
Calling up a stored setting (mem-
ory function) .................................. 107
Cleaning the cover ......................... 314
Folding the backrest (rear com-
partment) forwards/back .............. 279
Important safety notes .................... 96
Seat heating .................................. 100
Seat heating problem .................... 101
Seat ventilation .............................. 101
Seat ventilation problem ................ 101
Storing settings (memory func-
tion) ............................................... 107
Securing a load
see Securing cargo
Securing cargo .................................. 281
Selecting a gear
see Automatic transmission
Selector lever
Cleaning ......................................... 314
see Automatic transmission
Sensors (cleaning instructions) ....... 312
Service menu (on-board com-
puter) .................................................. 217
Service message
see ASSYST PLUS
Service products
Brake fluid ..................................... 364
Coolant (engine) ............................ 364
Engine oil ....................................... 363
Fuel ................................................ 361
Important safety notes .................. 361
Refrigerant (air-conditioning sys-
tem) ............................................... 365
Washer fluid ................................... 365
Setting the date/time format
see also Digital Operator's Man-
ual .................................................. 266
Setting the language
see also Digital Operator's Man-
ual .................................................. 266
Setting the time
see also Digital Operator's Man-
ual .................................................. 266
Settings
Factory (on-board computer) ......... 221 On-board computer ....................... 217
SETUP (on-board computer,
Mercedes-AMG vehicles) .................. 222
Side impact air bag ............................. 50
Side marker lamp (display mes-
sage) ................................................... 237
Side running board
Cleaning ......................................... 312
Side w
indows
Cleaning ......................................... 311
Convenience closing feature ............ 91
Convenience opening feature .......... 91
Important safety information ........... 89
Opening/closing .............................. 90
Problem (malfunction) ..................... 92
Resetting ......................................... 92
Reversing feature ............................. 90
SIRIUS services
see also Digital Operator's Man-
ual .................................................. 266
Ski and snowboard bag .................... 278
Sliding sunroof
Important safety notes .................... 93
Opening/closing .............................. 93
Problem (malfunction) ..................... 94
Resetting ......................................... 94
SmartKey
Changing the battery ....................... 80
Changing the programming ............. 79
Checking the battery ....................... 80
Convenience closing feature ............ 91
Convenience opening feature .......... 91
Display message ............................ 253
Door central locking/unlocking ....... 77
Important safety notes .................... 77
KEYLESS-GO start function .............. 79
Loss ................................................. 81
Mechanical key ................................ 79
Overview .......................................... 77
Positions (ignition lock) ................. 130
Problem (malfunction) ..................... 81
Starting the engine ........................ 132
Smartphone
Starting the engine ........................ 133
SMS
see also Digital Operator's Man-
ual .................................................. 266
Index19

Reporting problems........................ .31
Securing from rolling away ............ 354
Technical data ............................... 359
Towing away .................................. 327
Transporting .................................. 329
Unlocking (in an emergency) ........... 84
Unlocking (SmartKey) ...................... 77
Vehicle data ................................... 366
Vehicle data
Dimensions .................................... 366
Vehicle emergency locking ................ 84
Vehicle identification number
see VIN
Vehicle identification plate .............. 360
Vehicle level
AIR BODY CONTROL ...................... 171
Display message ............................ 242
Vehicle maintenance
see ASSYST PLUS
Video
Operating the DVD ......................... 215
see also Digital Operator's Man-
ual .................................................. 266
VIN
Seat ............................................... 361
Type plate ...................................... 360
W
Warning and indicator lampsABS ................................................ 257
Active Brake Assist ........................ 263
Airbag ............................................ 260
Brakes ........................................... 256
Coolant .......................................... 261
Distance warning ........................... 263
Engine diagnostics ......................... 260
ESP
®.............................................. 257
ESP®OFF ....................................... 259
Fuel tank ........................................ 260
General notes ................................ 254
Overview .......................................... 36
Parking brake ................................ 260
PASSENGER AIR BAG ...................... 44
Reserve fuel ................................... 260
Restraint system ............................ 260
Seat belt ........................................ 255
SPORT handling mode ................... 259 Steering ......................................... 265
Tire pressure monitor .................... 264
Warranty .............................................. 28
Washer fluid
Display message ............................ 253
Weather display (COMAND)
see also Digital Operator's Man-
ual .................................................. 266
Wheel and tire combinations
Tires ............................................... 357
Wheel bolt tightening torque ........... 357
Wheel chock ...................................... 354
Wheels
Changing a wheel .......................... 353
Checking ........................................ 333
Cleaning ......................................... 311
Important safety notes .................. 333
Information on driving .................... 333
Interchanging/changing ................ 353
Mounting a new wheel ................... 356
Mounting a wheel .......................... 354
Removing a wheel .......................... 356
Snow chains .................................. 335
Storing ........................................... 354
Tightening torque ........................... 357
Wheel size/tire size ....................... 357
Window curtain air bag
Display message ............................ 234
Operation ......................................... 50
Windows
see Side windows
Windshield
Defrosting ...................................... 124
Windshield washer fluid
see Windshield washer system
Windshield washer system
Adding washer fluid ....................... 307
Important safety notes .................. 365
Windshield wipers
Problem (malfunction) ................... 117
Replacing the wiper blades ............ 115
Switching on/off ........................... 114
Winter driving
Important sa
fety notes .................. 335
Slippery road surfaces ................... 158
Snow chains .................................. 335
Winter operation
Radiator cover ............................... 304
24Index

The following text is reproduced as required of
all manufacturers under Title 49, Code of U.S.
Federal Regulations, Part 575 pursuant to the
National Traffic and Motor Vehicle Safety Act of
1966.
If you believe that your vehicle has a defect
which could cause a crash or could cause injury
or death, you should immediately inform the
National Highway Traffic Safety Administration
(NHTSA) in addition to notifying Mercedes-Benz USA, LLC.
If NHTSA receives similar complaints, it may
open an investigation, and if it finds that a safety
defect exists in a group of vehicles, it may order
a recall and remedy campaign. However, NHTSA
cannot become involved in individual problems
between you, your dealer, or Mercedes-Benz
USA, LLC.
To contact NHTSA, you may call the Vehicle
Safety Hotline toll-free at 1-888-327-4236
(TTY: 1-800-424-9153); go tohttp://
www.safercar.gov; or write to: Administrator,
NHTSA, 400 Seventh Street, SW., Washington,
DC 20590.
You can also obtain other information about
motor vehicle safety from
http://www.safercar.gov
Limited Warranty
!
Observe the notes in this Operator's Manual
regarding the correct operation of your vehi-
cle and possible damage to the vehicle. Dam-
age to the vehicle which is caused by violation
of these notes is not covered by the
Mercedes-Benz implied warranty or the new
or used-vehicle warranty.
QR codes for the rescue card
The QR codes are secured in the fuel filler flap
and on the opposite side on the B-pillar. In the
event of an accident, rescue services can use
the QR code to quickly find the appropriate res-
cue card for your vehicle. The current rescue
card contains the most important information
about your vehicle in a compact form, e.g. the
routing of the electric cables.
You can find more information under
www.mercedes-benz.de/qr-code.
Data stored in the vehicle
Data storage
A wide range of electronic components in your
vehicle contain data memories.
These data memories temporarily or perma-
nently store technical information about:
Rthe vehicle's operating state
Rincidents
Rmalfunctions
In general, this technical information docu-
ments the state of a component, a module, a
system or the surroundings.
This includes, for example:
Roperating conditions of system components.
For example, fluid levels
Rthe vehicle's status messages and those of its
individual components, e.g. number of wheel
revolutions/speed, deceleration in move-
ment, lateral acceleration, accelerator pedal
position
Rmalfunctions and defects in important system
components, e.g. lights, brakes
Rvehicle reactions and operating conditions in
special driving situations, e.g. air bag deploy-
ment, intervention of stability control sys-
tems
Rambient conditions, e.g. outside temperature
This data is of an exclusively technical nature
and can be used to:
Rassist in recognizing and rectifying malfunc-
tions and defects
Ranalyze vehicle functions, e.g. after an acci-
dent
Roptimize vehicle functions
The data cannot be used to trace the vehicle's
movements.
When your vehicle is serviced, technical infor-
mation can be read from the event data memory and malfunction data memory.
Services include, for example:
Rrepair services
Rservice processes
Rwarranties
Rquality assurance
The vehicle is read out by employees of the ser-
vice network (including the manufacturer) using
special diagnostic testers. More detailed infor-
mation is obtained from it, if required.
32Data stored in the vehicle
Introduction

For this reason, you should always switch off
the windshield wipers in dry weather.
1$Windshield wiper off
2ÄIntermittent wipe, normal
3ÅIntermittent wipe, frequent
4°Continuous wipe, slow
5¯Continuous wipe, fast
BíSingle wipe
î Wipe with washer fluid
XSwitch on the ignition.
XTurn the combination switch to the corre-
sponding position.
Vehicles with a rain sensor: in theÅor
Ä position, the appropriate wipe frequency
is automatically set according to the intensity of
the rain. In the Åposition, the rain sensor is
more sensitive than in the Äposition, caus-
ing the windshield wiper to wipe more fre-
quently.
If the wiper blades are worn, the windshield will
no longer be wiped properly. This could prevent
you from observing the traffic conditions.
Replacing the wiper blades
Important safety notes
GWARNING
If the windshield wipers begin to move while
you are changing the wiper blades, you could be trapped by the wiper arm. There is a risk of
injury.
Always switch off the windshield wipers and
ignition before changing the wiper blades.
!Never open the hood if a windshield wiper
arm has been folded away from the wind-
shield.
Never fold a windshield wiper arm without a
wiper blade back onto the windshield.
Hold the windshield wiper arm firmly when
you change the wiper blade. If you release the
windshield wiper arm without a wiper blade
and it falls onto the windshield, the windshield
may be damaged by the force of the impact.
Mercedes-Benz recommends that you have
the wiper blades changed at a qualified spe-
cialist workshop.
!To avoid damaging the wiper blades, make
sure that you touch only the wiper arm of the
wiper.
Changing the windshield wiper blades
Moving the wiper arms to a vertical posi-
tion
On vehicles without KEYLESS-GO or KEY-
LESS‑GO start function:
XTurn the SmartKey to position 1or2 in the
ignition lock (Ypage 130).
XSet the windshield wipers to the °posi-
tion on the combination switch.
XWhen the wiper arms are vertical to the hood,
turn the SmartKey to position uin the igni-
tion lock and remove SmartKey.
XFold the wiper arm away from the windshield.
On vehicles with KEYLESS-GO or KEY-
LESS‑GO start function:
XSwitch off the engine.
XRemove your foot from the brake pedal.
XSet the windshield wiper to the °position
on the combination switch.
XPress the Start/Stop button repeatedly until
the windshield wiper starts.
XWhen the wiper arms are vertical to the hood,
press the Start/Stop button.
XFold the wiper arm away from the windshield.
Windshield wipers115
Lights and windshield wipers
Z

This helps you to avoid overheating the
brakes and wearing them out excessively.
When you take advantage of engine braking, a
drive wheel may not turn for some time, e.g.
on a slippery road surface. This could cause
damage to the drive train. This type of damage is 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 constantly
results in excessive and premature wear to
the brake pads.
If the brakes have been subjected to a heavy
load, do not stop the vehicle immediately. Drive
on for a short while. This allows the airflow to
cool the brakes more quickly.
Wet roads
If you have driven for a long time in heavy rain
without braking, there may be a delayed reac-
tion from the brakes when braking for the first
time. This may also occur after the vehicle has
been washed or driven through deep water.
You have to depress the brake pedal more
firmly. Maintain a greater distance from the
vehicle in front.
After driving on a wet road or having the vehicle
washed, brake firmly while paying attention to
the traffic conditions. This will warm up the
brake discs, thereby drying them more quickly
and 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 brake
pads. This can result in a significantly longer
braking distance.
RIn order to prevent any salt build-up, apply the
brakes occasionally while paying attention to
the traffic conditions.
RCarefully depress the brake pedal and the
beginning and end of a journey.
RMaintain a greater distance to the vehicle
ahead.
Servicing the brakes
!The brake fluid level may be too low, if:
Rif the red brake warning lamp lights up in
the instrument cluster and
Ryou hear a warning tone while the engine is
running
Observe additional warning messages in the
multifunction display.
The brake fluid level may be too low due to
brake pad wear or leaking brake lines.
Have the brake system checked immediately.
Consult a qualified specialist workshop to
arrange this.
!Vehicles with 4MATIC: function or per-
formance tests may only be carried out on a 2-
axle dynamometer. If you wish to operate the
vehicle on such a dynamometer, please con-
sult a qualified specialist workshop in
advance. You could otherwise damage the
drive train or the brake system.
!Vehicles with 4MATIC: the ESP®system
operates automatically. If the electric parking
brake is tested on a brake dynamometer, the
engine and ignition must be switched off: turn
the SmartKey in the ignition lock to position
u or1 or press the Start/Stop button
repeatedly in accordance with the given
SmartKey positions.
Braking triggered automatically by ESP
®may
cause severe damage to the brake system.
All checks and maintenance work on the brake
system must be carried out at a qualified spe-
cialist workshop.
Have brake pads installed and brake fluid
replaced at a qualified specialist workshop.
If the brake system has only been subject to
moderate loads, you should test the functional-
ity of your brakes at regular intervals.
Information on BAS (Brake Assist System)
(
Ypage 66) and Active Brake Assist with cross-
traffic function (Ypage 72).
Driving tips157
Driving and parking
Z

For safety reasons, Mercedes-Benz recom-
mends only installing the following brake disks
and brake pads/linings:
Rbrake disks that have been approved by
Mercedes-Benz
Rbrake pads/linings that have been approved
by Mercedes-Benz or that are of an equivalent
standard of quality
Other brake disks or brake pads/linings can
compromise the safety of your vehicle.
Always replace all brake disks and brake pads/
linings on an axle at the same time. Always
install new brake pads/linings when replacing
brake disks.
The vehicle is equipped with lightweight brake
disks to which the wheel assembly with rim and
threaded connection is matched.
The use of brake disks other than those
approved by Mercedes-Benz can change the
track width and is subject to approval, if appli-
cable.
Shock-type loads when handling the brake
discs, such as when changing wheels, can lead
to a reduction in comfort when driving with light-
weight brake discs. Avoid shock-type loads on
the lightweight brake disks, particularly on the
brake plate.
Mercedes-Benz recommends that you only use
brake fluid that has been specially approved for
your vehicle by Mercedes-Benz, or which corre-
sponds to an equivalent quality standard. Brake
fluid which has not been approved for
Mercedes-Benz vehicles or which is not of an
equivalent quality could affect your vehicle's
operating safety.
Driving on wet roads
Hydroplaning
If water has accumulated to a certain depth on
the 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 in
conditions 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 front
or in the opposite direction create waves. This
may cause the maximum permissible water
depth to be exceeded.
Failure to observe these notes may result in
damage to the engine, electrical systems and
transmission.
If you have to drive on stretches of road on which
water has collected, please bear in mind that:
Rin the case of standing water, the water level may be no higher than the lower edge of the
vehicle 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 qualified
specialist workshop at the onset of winter.
Drive particularly carefully on slippery road sur-
faces. Avoid sudden acceleration, steering and
158Driving tips
Driving and parking

Display messagesPossible causes/consequences andMSolutions
The yellow!warning lamp lights up and th ered F (USAonly)
or ! (Canada only) indicator lamp flashes .
It is no tpossibl eto apply th eelectric parking brak emanually.
XShift th etransmission to position j.
XVisitaqualified specialist workshop .
$(USAonly)
J(Canada only)
Check Brake Fluid
Level
There is no tenough brak eflui din th ebrak efluid reservoir .
In addition ,th e$ (USAonly) or J(Canada only) warning lamp
lights up in th einstrumen tcluste rand awarning tone sounds.
GWARNIN G
The braking effec tmay be impaired.
There is aris kof an accident.
XPull ove rand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions. Do no tcontinu edrivin g
under any circumstances.
XSecur eth evehicl eagainst rollin gaway (Ypage 151).
XConsult aqualified specialist workshop .
XDo notadd brak efluid .This does no tcorrec tth emalfunction .
#
CheckBrakePadWear
The brak epads/linings hav ereached their wear limit.
US Aonly: th ered $ brakesystem warning lamp is lit while th e
engin eis running.
XVisit aqualified specialist workshop .
G
Inoperative
Oneor mor emain features of th embrace system are malfunctioning .
XVisitaqualified specialist workshop .
ActiveBrakeAssistFunctionsCurrentlyLimitedSee Opera‐tor's Manual
Active Brake Assis tis temporarily inoperative.
Possibl ecauses are:
Rth eradar sensor system is temporarily inoperative, e.g. due to elec -
tromagneti cradiation emitted by nearby TV or radi ostation sor
other source sof electromagneti cradiation
Rth esystem is outside th eoperating temperature range
Rth eon-boar dvoltag eis to olow
Whe nth ecauses state dabov eno longer apply, th edisplay message
disappears.
Active Brake Assis tis operational again .
If th edisplay message does no tdisappear :
XPull overand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 151).
XRestart th eengine.
Display messages23 1
On-board computer and displays
Z