MERCEDES-BENZ GLC COUPE 2021 Owners Manual

+
ENVIRONMENTAL
NOTEEnvironmental
pollution due todisposing of operating
fl uids in a non-environmen tally responsi‐
ble manner Operating
fluids include thefo llowing:
R fuels
R exhaust gas af tertre atment additives, e.g.
Ad Blue ®
R lubricants
Incor rect disposal of opera tingfluids can
cause considerable damage tothe environ‐
ment. #
Dispose of operating fluids in an envi‐
ro nmentally responsible manner. Operating
fluids include thefo llowing:
R fuels
R DeNOx agent AdBlue ®
forex haust gas af ter‐
treatment
R lubri cants
R coolant R
brake fluid
R windsc reen washer fluid
R climate cont rol sy stem refrigerant
Only use products app rove dby Mercedes-Benz.
Damage caused bythe use of products that ha ve
not been appr oved is not co veredby the
Mercedes-Benz warranty or goodwill gestures.
The operating fluids appr ovedby Mercedes-Benz
can be identified bythefo llowing insc ript ions on
th e conta iner:
R MB- Freigabe (e.g. MB-Fr eigabe 229.51 )
R MB-Appr oval (e.g. MB-App rova l 229.51)
Fu rther information on appr oved operating flu‐
ids:
R inthe Mercedes-Benz Specifications for
Operating Fluids byentering the designation
- at https://be vo.mercedes-benz.com
- inthe Mercedes-Benz BeVo App
R at a qualified specialist workshop &
WARNING Risk offire or explosion from
fuel
Fu els are highly flammable. #
Fire, naked flames, smoking and crea‐
tion of spar ksmust be avoided. #
Swit choff the ignition and, if available,
th est ationary heater, before and while
re fuelling theve hicle. &
WARNING Risk of injury from fuels
Fu els are poisonous and hazardous to your
health. #
Do not swallow fuel or let it come into
contact with skin, eyes or clo thing. #
Do not inhale fuel vapour. #
Keep children away from fuel. #
Keep doors and windo wsclosed du ring
th ere fuelling process.
If yo u or other people come into contact with
fuel, obser vethefo llowing: 358
Tech nical da ta

#
Immedia tely rinse fuel off your skin with
soap and water. #
If fuel comes into contact with your
ey es, immediately rinse them thor‐
oughly with clean water.Seek medical
attention immediately. #
Ifyo u swallow fuel, seek medical atten‐
tion immediatel y.Do not induce vomit‐
ing. #
Change immediately out of clo thing that
has come into con tact with fuel. Flexible-fuel
vehicles can be refuelled with the
fo llowing fuel types:
R unleaded petrol
R E85 fuel
R a mixture of E85 fuel and unleaded petrol
Flexible-fuel vehicles can be identified bythe
Ethanol up toE85 sticke r on the inside of the
fuel filler flap.
Depending on the count ry,th e fuels you can use
in your vehicle may dif fer from the information in
th e Owner's Manual. The fuels that ha vebeen appr
oved foryo ur vehicle can be found on the
instruction label on the inside of the fuel filler
fl ap. Fu
el Information on fuel
grades forve hicles with
petrol engines
Obser vethe no tes on operating fluids
(/ page 357).
* NO
TEDama gecaused bythe wrong fuel Even small amounts of
the wrong fuel could
re sult in damage tothe fuel sy stem, the
engine and the emission control sy stem. #
Only refuel using unleaded, sulphu r-free
petrol that con form sto European
EN 228, or an equi valent specification.
Fu el of this specification may conta in upto
10 %ethanol by volume. Your vehicle is suita‐
ble for use with E10 fuel. Ne
verre fuel with one of thefo llowing fuels:
R diesel
R regular petrol with an octane number
lo we rth an 91 RON
R petrol with more than 10%ethanol byvol‐
ume, e.g. E15, E20, E85, E100
R petrol with more than 3% me thanol by
vo lume, e.g. M15, M30
R petrol with additives conta ining metal
If yo u ha veacciden tally refuelled with the
wrong fuel: #
do not swit ch the ignition on. #
consult a qualified specialist workshop. The
following compatibility indications for fuel
apply to yourvehicle: Te
ch nical da ta359

1
For petrol with maximum 5% ethanol byvol‐
ume
2 For petrol with maximum 10%ethanol by vol‐
ume
Ac cording toEuropean standard EN 1694 2you
can find the compatibility indications at thefo l‐
lowing locations:
R ontheve hicle on the information label on the
fuel filler flap (/ page171).
R onthe fuel pump or pump nozzle suitable for
yo ur vehicle thro ughout Europe.
If th eav ailable fuel is not suf ficiently low in sul‐
phu r,th is can produce unpleasant odours. The
recommended octane number foryo ur vehi‐
cle can also be found on the information label in
th e fuel filler flap (/ page171).
As a temp orary measure, if there commended
fuel is not available, you may also use regular
unleaded petrol with an octane number of at
least 91RON.
This may reduce engine output and increase fuel
consum ption.
Ne verre fuel using petrol with an even lo wer
RO N.
Fu rther information on fuel can be obtained at a
fi lling station or a qualified specialist workshop.
Information on additives in petrol
Obser vethe no tes on operating fluids
(/ page 357).
* NO
TEDama gefrom use of unsuitable
additives Even small amounts of
the wrong additive
may lead tomalfunctions occur ring. #
Only add cleaning additives recommen‐
ded byMercedes-Benz tothe fuel. Mercedes-Benz
recommends that you use
brand-name fuels with additives.
In some count ries, the fuel available may not
ha ve suf ficient additives. Residue could build up
in the fuel injection sy stem as a result. In this
case, in consultation with a Mercedes-Benz
service centre, mix the fuel with the cleaning
additive recommended byMercedes-Benz.
Obser vethe no tes and mixing ratios indica ted
on theta nk.
In fo rm ation on fuel grades forve hicles with
a diesel engine
Gene ral no tes
Obser vethe no tes on operating fluids
(/ page 357). &
WARNING Risk offire from fuel mixture
If yo u mix diesel fuel with petrol, theflash
point of the fuel mixture is lo werth an that of
pure diesel fuel. #
Neverre fuel using petrol in diesel
engines. #
Never mix petrol with diesel fuel. 360
Tech nical da ta

*
NO
TEDama gecaused bythe wrong fuel Even small amounts of
the wrong fuel could
re sult in damage tothe fuel sy stem, the
engine and the emission control sy stem. #
Only refuel using sulphur- free diesel
fuel that con form sto European stand‐
ard EN 590, or an equivalent specifica‐
tion.
In countries without sulphur-fre e diesel
fuel, refuel using only lo w-sulphur diesel
fuel with a sulphur content less than
50 ppm.
Ne verre fuel with one of thefo llowing fuels:
R petrol
R marine diesel
R heating oil
R pure bio-diesel fuel or vege table oil
R paraf fin or kerosene
If yo u ha veacciden tally refuelled with the
wrong fuel: #
Do not swit ch the ignition on. #
Consult a qualified specialist workshop. The
following compatibility indication for fuel
applies to yourvehicle: 1
For diesel fuel with a maximum of 7% byvol‐
ume bio-diesel (fatty acid me thyl es ter)
Ac cording toEuropean standard EN 1694 2you
can find the compatibility indications at thefo l‐
lowing locations:
R ontheve hicle on the information label in the
fuel filler flap (/ page171)
R onthe fuel pump or pump nozzle suitable for
yo ur vehicle thro ughout Europe Information on low outside
temperatures
Re fuel your vehicle with as much winter diesel
fuel as possible at the beginning of winter.
Before changing overto winter diesel fuel, the
fuel tank should be em pty, if possible. When first
re fuelling with winter diesel fuel, only refuel
using a small amount, e.g. toreser veleve l. The
fuel tank can be filled as usual when next refuel‐
ling.
Fu rther information on fuel can be obtained at a
fi lling station or a qualified specialist workshop.
Ta nk content and reser vefuel
The total capacity of the fuel tank may vary,
depending on theve hicle equipment. Te
ch nical da ta361

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

Coolant
Note
s on coolant
Obser vethe no tes on operating fluids
(/ page 357). &
WARNING Risk offire ‑ and inju ryfrom
antifreeze
If antifreeze comes into contact with hot
component parts in the engine compart‐
ment, it may ignite. #
Allow the engine tocool down before
yo uto p up the antif reeze. #
Make sure that no antifreeze spills out
next tothefiller opening. #
Thoroughly clean the antif reeze from
component parts before starting the
ve hicle. *
NO
TEDama gecaused byincor rect cool‐
ant #
Only use coolant that has been pre‐
mixed with therequ ired antifreeze pro‐
te ction.
Information on coolant is available at thefo l‐
lowing locations:
R inthe Mercedes-Benz Specification for
Operating Fluids 310.1
- at https://be vo.mercedes-benz.com
- inthe Mercedes-Benz BeVo app
R at a qualified specialist workshop *
NO
TEOverheating at high outside tem‐
peratures If an inapp
ropriate coolant is used, the
engine cooling sy stem is not suf ficiently pro‐
te cted against overheating and cor rosion at
high outside temp eratures. #
Alw ays use coolant appr ovedby
Mercedes-Benz. #
Obser vethe instructions in the
Mercedes-Benz Specifications for Oper‐
ating Fluids 310.1. Ha
ve the coolant regularly replaced at a qualified
specialist workshop.
Proportion of antifreeze concentrate in the
engine cooling sy stem:
R a minimum of 50% (antifreeze pr otection
down toappr oximately -37°C)
R a maximum of 55% (antifreeze pr otection
down to-45°C) Note
s on windscreen washer fluid Obser
vethe no tes on operating fluids
(/ page 357). &
WARNING ‑ Risk of fire and injury due to
windscreen washer concentrate
Wi ndsc reen washer concentrate is highly
fl ammable. It could ignite if it comes into
con tact with hot engine component parts or
th eex haust sy stem. Te
ch nical da ta365

#
Make sure that no windscre enwasher
concentrate spills out next tothefiller
opening. *
NO
TEDama getotheex terior lighting
due tounsuitable windsc reen washer
fl uid Uns
uitable windsc reen washer fluids may
damage the plastic sur face of theex terior
lighting. #
Only use windscreen washer fluids
which are also suitable for use on plas‐
tic sur faces, e.g. MB SummerFit or MB
Wi nterFit. *
NO
TEBlocked spr aynozzles caused by
mixing windscreen washer fluids #
Do not mix MB SummerFit and MB Win‐
te rFit with other windscreen washer flu‐
ids. Do not use distilled or de-ionised
water.Other‐
wise, thefill le vel sensor may be triggered er ro‐
neously.
Re commended windscreen washer fluid:
R abo vefreezing point: e.g. MB SummerFit
R below freezing point: e.g. MB WinterFit
Fo rth e cor rect mixing ratio, referto the informa‐
tion on the antif reeze contai ner.
Mix washer fluid with windsc reen washer fluid all
ye ar round. Ve
hicle data Ve
hicle dimensions The heights specifi
ed mayvary as a result of the
fo llowing factors:
R tyres
R load
R condition of the suspension
R optional equipment Height when opened and headroom
Model
1 1Height
when
opened 2 2
Head‐
ro om
All models 2209 mm 1933 mm Ve
hicle dimensions All models
Ve
hicle lengt h4 731 mm
Ve hicle width includ‐
ing outside mir rors 2096 mm366
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All models
Ve
hicle width exclud‐
ing outside mir rors 18
90 mm
Ve hicle height 1600 mm
Wheelbase 2873 mm We
ights and loads Please obser
vethefo llowing no tesfo rth e speci‐
fi ed vehicle data:
R Items of optional equipment increase the
unladen weight and reduce the pa yload.
R Vehicle-specific weight information can be
fo und on theve hicle identification plate
(/ page 355).
Obser vetheve hicle data specified below :
optional equipment increases the unladen
we ight and reduces the pa yload. Model
Maximumroof load
All models 75kg Tr
ailer hitch Gene
ral no tes on the trailer hit ch Modifications
tothe engine cooling sy stem may
be necessar y,depending on theve hicle model.
The retrofitting of a trailer hitch is only pe rmissi‐
ble if a towing capacity is specified in your vehi‐
cle documents.
Fu rther information can be obtained at a quali‐
fi ed specialist workshop. Mounting dimensions
1
Fastening points
2 Overhang dimension
3 Rear axle centre line Te
ch nical da ta367