2021 MERCEDES-BENZ GLC COUPE ECO mode

#
Only inter change the front and rear
wheels if the wheels and tyres ha vethe
same dimensions. Inter
changing the front and rear wheels if the
wheels or tyres ha vediffere nt dimensions can
re nder thege neral operating pe rmit in valid.
The wear pat tern s on the front and rear wheels
dif fer:
R front wheels wear more on the tyre shoulder
R rear wheels wear more in the cent reofthe
tyre
Do not drive wi thtyres that ha vetoo little tread
dep th. This significantly reduces traction on wet
ro ads (aquaplaning).
On vehicles with the same front and rear wheel
size, you can inter change the wheels every
5000 to10,000 km, depending on thewe ar.
Ensure the direction of rotation is maintained for
th e wheels.
Obser vethe instructions and saf ety no tes on
"Changing a wheel" when doing so
(/ page 345). Note
s onstoring wheels When
storing wheels, obser vethefo llowing
no tes:
R Afterre moving wheels, store them in a cool,
dry and preferably dark place.
R Protect the tyres from conta ct withoil,
grease or fuel. Overview of
the ty re-change tool kit *
NO
TEMercedes-AMG vehicles #
Obser vethe no tes in the Supplement.
Yo u could otherwise failto recognise
dangers. *
NO
TEPlug-in hybrid #
Obser vethe no tes in the Supplement.
Yo u could otherwise failto recognise
dangers. Apa
rtfrom some countr y-specific variants, vehi‐
cles are not equipped with a tyre-change tool kit. Fo
r more information on which tyre-changing
to ols are required and appr oved for per form ing a
wheel change on your vehicle, consult a qualified
specialist workshop.
Yo ure qu ire thefo llowing tools, forex ample, to
ch ange a wheel:
R Jack
R Chock
R Wheel wrench
R Cent ring pin
% The jack weighs appr oximately 3.4 kg.
The maximum load capacity of the jack can
be found on thest icke r af fixe dto the jac k.
The jack is maintenance-free. If there is a
malfunction, please conta ct aqualified spe‐
cialist workshop.
The tyre-change tool kit is located under the load
compartment floor.
% Depending on the model, the tyre change
to ol kit may be located in other positions
under the load compartment floor. 344
Wheels and tyres

ha
ve to to p up AdBlue ®
will also vary. Ha vethe
Ad Blue ®
supply checked at a qualified specialist
wo rkshop before making journe ysoutside of
Europe. Before a longer stay outside of Europe,
consult a qualified specialist workshop.
Ad Blue ®
ra nge and fill le vel
The AdBlue ®
fill le vel and range can be displ ayed
via the on-board computer. The AdBlue ®
ra nge
shown depends strongly on the driving style and
operating conditions. The actual range can
th erefore deviate from thera nge cur rently dis‐
pl ay ed in the on-board computer. The informa‐
tion supplied in the Owner's Manual rega rding
th ere ser vequantity at thefirs t display warning
and on the minimum top-up quantity with an
em pty fuel tank is also tobe under stood as
guide values. Engine oil
Note
s on engine oil
Obser vethe no tes on operating fluids
(/ page 357). *
NO
TEEngine damage causedbyan
incor rect oil filter, incor rect oil or addi‐
tives #
Do not use engine oils or oil filters
which do not cor respond tothe specifi‐
cations explicitly prescribed forthe
service inter vals. #
Do not alter the engine oil or oil filter in
order toachie velonger change inter vals
th an presc ribed. #
Do not use additives. #
Have the engine oil rene we d at regular
inter vals. Mercedes-Benz
recommends that you ha vethe
oil change car ried out at a qualified specialist
wo rkshop.
Only use engine oils appr oved byMercedes-
Benz.
Pe trol engines: for cer tain countries, dif fere nt
engine oils can be used in conjunction with
re duced maintenance inter vals.
% Further information on dif fere nt engine oils
can be ob tained at a qualified specialist
wo rkshop.
Quality and capacity of engine oil Pe
trol enginesM B-Freigabe or MB-
Appr oval
All models 229.51,229.52,
229.61
229.71* Te
ch nical da ta363

Diesel engines MB-F
reigabe or MB-
Appr oval
GLC 400 d 4MATIC 229.52
229.61*
All other models 229.52, 229.61
229.71**
re commended for lo west possible fuel con‐
sum ption (lo westSA E viscosity class in ea ch
case; obser vepossible restrictions of the
appr ovedSA E viscosity classes)
To achie vethe lo west possible fuel consum ption,
it is recommended touse the engine oil specifi‐
cations mar ked in theta ble forth e lo west SAE
viscosity class. Possible restrictions of the
appr ovedSA E viscosity classes mu stbe
obser ved.
% Ifth e engine oils lis ted in theta ble are not
av ailable, you may add a maximum of
1. 0 litr e ofthefo llowing engine oils once
onl y. Engine oils
for one-time filling only in exceptional
cases:
R vehicles with a petrol engine: MB-Freigabe
or MB-Appr oval 229.31 orAC EA C3
R Vehicles with a diesel engine:
- GLC 400 d 4MATIC: MB-Freigabe or MB-
Appr oval 229.51 orAC EA C3
- Allother models: ACEA C3
The following values referto an oil change,
including the oil filter. Model
Capacity
GLC 200 d
GLC 220 d 4MATIC 6.3 litres
GLC 300 d 4MATIC 6.8 litres
GLC 400 d 4MATIC 8.0 litres
All other models 6.0 litres Note
s on brake fluid Obser
vethe no tes on operating fluids
(/ page 357). &
WARNING Risk of an accident due to
va pour poc kets form ing in the brake sys‐
tem
The brake fluid cons tantly absorbs moi sture
from the air. This lo wersthe boiling point of
th e brake fluid. If the boiling point is too lo w,
va pour poc kets may form inthe brake sys‐
te m when the brakes are applied hard.
This impairs the braking ef fect. #
Have the brake fluid rene we d at the
specified inter vals. Ha
ve the brake fluid regularly replaced at a
qu alified specialist workshop.
Only use a brake fluid appr ovedby Mercedes-
Benz according toMB-F reigabe or MB-Appr oval
33 1.0. 364
Tech nical da ta

Display messages
Possible causes/consequences and M MSolutions
ç - - -km/h *A
ctive Dis tance Assi stDISTRONIC cannot be acti vated as not all activation conditions are fulfilled. #
Comply with the activation conditions of Active Dis tance Assi stDISTRONIC (/ page 199).
ç suspended *I
fyo u depress the accelera tor pedal be yond the setting of Active Dis tance Assi stDISTRONIC, the sy stem will
switch topassive mode (/ page196).
ç
Off *A
ctive Dis tance Assi stDISTRONIC was deactivated. If a warning tone also sounds, Active Dis tance Assi st
DISTRONIC has deacti vated automatically (/ page199).
Active Distance Assist cur-
rently unavailable See Own-
er's Manual *A
ctive Dis tance Assi stDISTRONIC is temp orarily una vailable.
The ambient conditions are outside the sy stem limits (/ page196).
As soon as the ambient conditions are within the sy stem limits, the sy stem will become available again. #
Drive on.
Active Distance Assist inop-
erative *A
ctive Dis tance Assi stDISTRONIC is malfunctioning.
Other driving sy stems and driving saf ety sy stems may also be malfunctioning. 398
Display messages and warning/indicator lamps

Electrical fuses
see Fuses
Electromagnetic compatibility Declaration of conformity........................ 26
Electronic Stability Prog ram
see ESP ®
(Electronic Stability Prog ram)
Emer gency
Fire extinguisher.................................... 314
Fir st-aid kit (so ftsided).......................... 314
Overview of the help functions................ 18
Re moving thewa rning triangle.............. .313
Saf etyve st............................................. 313
Setting up thewa rning triangle............. .313
Emer gency braking ................................... 182
Emer gency braking
see BAS (Brake Assi stSystem)
Emer gency call
see Mercedes-Benz emer gency call sy stem
Emer gency engine start............................ 331
Emer gency key
Inserting/removing.................................75
Locking/unlocking the doors.................. 80
Un locking theta ilgate............................ .86Emer
gency operation mode
St arting theve hicle...............................1 54
Emer gency spare wheel
Inflating................................................. 351
No tes....................................................3 50
Engine ECO start/ stop function........................ 16 0
Engine number...................................... 355
St arting (eme rgency operation mode)...1 54
St arting (Remo teOnline).......................1 55
St arting (s tart/s top button).................. 15 3
St arting assis tance................................ 325
Switching off (s tart/s top button).......... 17 7
Engine bonnet Function (active bonnet)........................ 298
Opening/closing................................... 298
Engine data Displaying.............................................. 16 6
Engine electronics Notes....................................................3 53
Engine number......................................... .355
Engine oil Additives...............................................3 63Capacity................................................ 363
Che
cking the oil le vel using the oil
dipstick..................................................3 01
Checking the oil le vel using the on-
board computer..................................... 302
MB-Fr eigabe or MB-Appr oval................ .363
Quality................................................... 363
To pping up............................................. 302
EQ Boost technology
Operating saf ety...................................... 24
ERA-GLONASS test mode
St arting/ending.................................... 288
Er ro r message
see Displ aymessa ge
ESC (Electronic Stability Control)
see ESP ®
(Electronic Stability Prog ram)
ESP ®
Crosswind Assis t.................................. .188
Tr ailer stabilisation................................ 188
ESP ®
(Electronic Stability Prog ram)
Ac tivating/deactivating................. 188, 189
Fu nction/no tes..................................... 186
EU general operating permit number ...... 355 Index
453

Garage door opene
rs
Opening/closing the door.....................1 80
Gearshift recommendation..................... .169
Gene ral operating permit number (EU)... 355
Genuine parts............................................. .23
Genuine wood (Care) ................................ .310
Glide mode................................................. 17 0H
Handbrake see Electric parking brake
Handling characteristics (unusual)......... 335
HANDS-FREE ACCESS ................................ .84
Hazard warning lights.............................. .129
Head restra int
Fr ont (adjusting mechanically)............... 101
Re ar (adjusting).................................... .102
Head-up display Adjusting display elements (on-board
compu ter)............................................. 253
Ad justing the brightness (on-board
computer).............................................2 53Fu
nction................................................ 252
Menu (on-board compu ter)................... 253
Operating the memory function............ 108
Setting the position (on-board com‐
puter)....................................................2 53
Switching on/of f................................... 253
Headlamp flashing.................................... 12 9
Headlamps see Automatic driving lights
Heating see Climate control
Help call see Mercedes-Benz emergency call sy stem
High beam Activating/deactivating......................... 12 9
Ad aptive Highbeam Assist Plus............ .133
High beam see Adaptive Highbeam Assist
High-pre ssure cleaner (care)................... 306
Hill Start Assist......................................... .191
HOLD function Function/no tes..................................... 19 0
Switching on/of f................................... 19 0Home screen (media display)
Overview............................................... 255
Hooking the luggage net .......................... .117 I
i-Size child seat securing sy stem
Fitting..................................................... .62
Seats suitable for attaching..................... 61
Identification pla te
Engine................................................... 355
Ve hicle..................................................3 55
Ignition Switching on (S tart/S top button).......... 15 2
Ignition key
see Key
Immobiliser .................................................. 93
Implied warranty
Ve hicle.................................................... 33
In-Car Of fice
Fe atures................................................ 282
Indicator lamp see Warning/indicator lamp Index
455

R
Ra dar and ultrasonic senso rs
Damage................................................. 184
Ra dio
Overview of the functions and sym‐
bols....................................................... 293
Ra in-closing feature
Side wind ows.......................................... 87
Sliding sunroof......................................... 91
Ra ising theve hicle
Re ar of theve hicle................................2 20
REA CHregulation........................................32
Re ading lamp
see Interior lighting
Re ading light
Switching on/off with hand mo ve‐
ments.................................................... 260
Re ar door (child saf ety lock)...................... 70
Re ar fog light
Switching on/of f................................... 12 8
Re ar of theve hicle
Lo we ring............................................... 220 Ra
ising.................................................. 220
Re ar seat
see Seat
Re ar seat belt
St atus display......................................... .44
Re ar seat belt status display ..................... 44
Re ar window heater.................................. 14 2
Re ar-view mir ror
Anti-dazzle mode (automatic)................ 14 0
Re ar-view mir ror
see Outside mir rors
Re cycling
see Take -ba ckof end-of-life vehicles
Re ducing agent
see AdBlue ®
Re fuelling
Re fuelling theve hicle............................. 171
Re gistration
Ve hicle.................................................... 32
Re gulatory radio identification................ 355 Re
mo tecont rol (stationa ryheater/
ve ntilation)
Displa ys................................................. 14 9
Problems............................................... 15 0
Re placing the battery............................ 14 9
Setting................................................... 14 8
Re mo teOnline
Charging thest ar ter battery.................. 154
Cooling/heating theve hicle interior...... 154
St arting theve hicle............................... 15 5
Re scue card................................................. 33
Re ser ve
Fu el........................................................ 361
Re set function (MBUX multimedia
sy stem)..................................................... .266
Re set function (MBUX multimedia
sy stem)
see Reset function (MBUX multime‐
dia sy stem)
Re setting (factory setting)
see Reset function (MBUX multime‐
dia sy stem)
Re sidual heat............................................. 14 5 Index
463

Snow
chains.............................................. 335
Soc ket (12 V)
Boot/luggage compa rtment.................. 121
Fr ont centre console.............................. 121
Soc ket (230 V)
Re ar...................................................... .122
Software update System updates.....................................2 63
Sound PRE-SAFE ®
Sound................................... 52
Wheels and tyres................................... 335
Sound menu Functions overview...............................2 96
Spare wheel see Emer gency spa rewheel
Specialist workshop
see Qualified specialist workshop
Specific absor ption rate ............................. 26
Speed limit for winter tyres
Setting................................................... 19 6
St andby mode
Ac tivating/deactivating......................... 183Fu
nction................................................ 183
St anding lights.......................................... 127
St art-off assi st
see Optimised acceleration
St art/s top button
Pa rking theve hicle................................1 77
St arting theve hicle...............................1 53
Switching on the po wer supply or
ignition................................................. .152
St art/s top function
see ECO start/ stop function
St arter battery
Charging (Remo teOnline)...................... 154
St arting
see Vehicle
St arting assi stance
see Jump -sta rt connection
St arting-o ffaid
see Hill Start Assist
St ationary heater/ventilation
Displ ays (remo tecontrol)...................... 14 9
Problems (remo tecontrol)..................... 15 0Re
placing the battery (remo tecon‐
trol)....................................................... 14 9
Setting (MBUX multimedia sy stem)....... 14 8
Setting (remo tecontrol)........................ 14 8
Switching on/off (control panel )........... 147
ST EER CONT ROL
Fu nction/no tes..................................... 189
Ste ering wheel
Ad justing (electrically)........................... 105
Ad justing (manually). ............................. 104
Buttons.................................................. 250
Ca re....................................................... 310
Operating the memory function............ 108
St eering wheel heater...........................1 05
Ste ering wheel gearshift paddles............ 16 8
Ste ering wheel heater
Ac tivating/deactivating......................... 105
St ow age areas
see Loading
see Stow age space
St ow age comp artments
see Loading
see Stow age space 466
Index