2021 MERCEDES-BENZ GLC COUPE fuel cap

Model
Total capacity
GLC 200 d5 0.0 litres
or
66.0 litres
All other models 66.0 litresModel
of whichreser ve
fuel
All model s7 .0 litresAd
Blue ®
(vehicles with a diesel engine only) Note
s onAdBlue ®
Obser vethe no tes on operating fluids
(/ page 357).
Ad Blue ®
is a wate r-soluble fluid forth e NOx
ex haust gas af tertre atment of diesel engines.
It may be improper or punishable in some coun‐
tries tooperate a vehicle that uses no AdBlue ®
or one that does not comply with the specifica‐
tions of these operating instructions. *
NO
TEMalfunctions due tothe dilution of
Ad Blue ®
or the use of additive-enhanced
Ad Blue ® The function of
the NOx exhaust gas af ter‐
treatment can be impaire dby the use of
unsuitable denoxification agents. #
Only use AdBlue ®
in accordance wi th
ISO 222 41 . #
Do not dilu teAd Blue ®
wi th wate r. #
Do not use additive-enhanced AdBlue ®
. *
NO
TEDama geand malfunctions due to
impurities in AdBlue ® Consequences of impuri
ties inAdBlue ®
:
R increased emission values
R damage tothe catalytic con verter
R NOx exhaust gas af tertre atment malfunc‐
tions #
Avoid impurities in AdBlue ®
. Ad
Blue ®
re sidues cr ystallise af ter a period of
time, and contaminate the sur faces wi thwhich
th ey come into contact. Clean the dirty sur faces
wi th wate r as soon as possible.
When you open theAd Blue ®
tank, small
amounts of ammonia vapour may escape. Do
not inhale any ammonia vapours that may be
re leased. Only fill th eAd Blue ®
tank in well-venti‐
lated areas.
Ad Blue ®
filling capacity and consum ption Model
Total capacity
All models 27.5 litres Ad
Blue ®
consu mption
The average AdBlue ®
consu mption is between
1% and 5% of fuel consumption. Li kefuel con‐
sum ption, AdBlue ®
consu mption is highly
dependent upon driving style and operating con‐
ditions. Forth is reason, your vehicle's actual
consum ption figures under da y-to -day operating
conditions may di ffer from the consum ption fig‐
ures calculated. The frequency at which you will 362
Tech nical da ta

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

Sy
stem limitations................................. 232
Ac tive Se rvice Sy stem PLUS
see AS SYST PLUS
Ac tive Speed Limit Assi st
Displ ay.................................................. 200
Fu nction................................................ 200
Ac tive Steering Assist
Ac tivating/deactivating......................... 205
Ac tive Emergency Stop Assis t............... 205
Fu nction................................................ 203
Sy stem limits.........................................2 03
Ad aptive brake lights ................................ 191
Ad aptive cruise control
see Active Dis tance Assi stDISTRONIC
Ad aptive functions, MULTIBEAM LED
see Intelligent Light Sy stem
Ad aptive Highbeam Assist
Fu nction................................................ 13 2
Switching on/of f................................... 13 3
Ad aptive Highbeam Assist Plus
Fu nction................................................ 13 3
Switching on/of f................................... 13 4Ad
Blue ®
Ad ditives...............................................3 62
Capacity................................................ 362
No tes..................................................... 174
Purity..................................................... 362
To pping up............................................. 175
Ad ditional door lo ck.................................... 76
Ad diti ves
Ad Blue ®
................................................ 362
Engine oil.............................................. 363
Fu el....................................................... 360
Ad diti ves (AdBlue ®
)
see AdBlue ®
Ad diti ves (engine oil)
see Additives
Ad diti ves (fuel)
see Fuel
ADS PLUS damping sy stem
see AIR BODY CONTROL
Af ter-sales service centre
see ASS YST PLUS
AIR BODY CONT ROL
Setting................................................... 219Suspension............................................
217
Air conditioning menu Calling up.............................................. 14 3
Air distribution Setting................................................... 14 2
Setting (MBUX multimedia sy stem)....... 14 4
Air freshener sy stem
see Frag rance sy stem
Air inlet see Air-water duct
Air pressure see Tyre pressure
Air suspension see AIR BODY CONTROL
Air vents
Ad justing (front).................................... .151
Ad justing (rear)..................................... .151
Air vents
see Air vents
Ai r-conditioning sy stem
see Climate control
Air-recirculation mode.............................. 14 5 Index
441

St
ow age space
Armrest.................................................. 111
Centre console....................................... 111
Door....................................................... 111
Glo vecompa rtment................................ 111
Stre etnames and house numbers
Displaying..............................................2 70
Suggestions Configuri ng........................................... 262
Sulphur content........................................ 359
Sur round lighting
Switching on/of f................................... 13 5
Sur round View
see 360° Camera
Suspension Adjusting thech assis le vel (AIR
BO DY CONTROL)...................................2 19
Suspension see AIR BODY CONTROL
SV HC (substances of very high con‐
cern) ............................................................. 32
Switch-off del aytime
Exterio r.................................................. 13 5Interior..................................................
13 6
Synchronisation function Activating/deactivating (control
panel).................................................... 14 4
Ac tivating/deactivating (MBUX mul‐
timedia sy stem).....................................1 44
Sy stem settings
Overview of the sy stem settings
menu.....................................................2 62
Re set function (MBUX multimedia
sy stem)................................................. 266 T
Ta ilgate
Closing.................................................... 81
HANDS-FREE ACCES S............................. 84
Limiting the opening angle......................85
Opening................................................... 81
Un locking (emer gency key)..................... 86
Ta ilpipes (care)......................................... .309
Ta ke -back of end-of-life vehicles
Pr otection of the environmen t................. 22
Ta nk content
Ad Blue ®
................................................ 362 Fu
el........................................................3 61
Re ser ve(fuel)........................................ 361
Te ch nical data
Axle load (trailer operation)...................3 69
Fa stening points (trailer hitch)............... 367
Information............................................ 353
Mounting dimensions (trailer hitch)....... 367
No tes (trailer hitch)............................... 367
Overhang dimension (trailer hitch)........3 67
Re gulatory radio identification.............. 355
To ngue weight...................................... .368
To wing capacity (trailer operation )........ 368
Ve hicle identification plate....................3 55
Te lephone
Connecting a mobile phone (Passk ey)... 276
Connecting a mobile phone (Secure
Simple Pairing)...................................... 276
Fu nctions in thete lephone men u.......... 276
No tes..................................................... 273
Operating modes...................................2 75
Te lephone menu overvie w..................... 275
Wi reless charging (mobile phone).......... 124
Te lephony operating modes
Blue tooth ®
Te lephony........................... .275 Index
467