MERCEDES-BENZ GLC 2018 Owners Manual

! Only use the fuel recommended. Operating
the vehicle with other fuels can lead to dam-
age to the fuel system, engine and exhaust
system.
! Do not use the following: R
Gasoline with more than 10% ethanol R
E100 (1 00% ethanol)R
Gasoline with methanol R
M100 (1 00% methanol)R
Gasoline with metalliferous additives R
Diesel
Do not mix such fuels with the fuel recom-
mended for your vehicle.
! To ensure the longevity and full perform-
ance of the engine, only premium-grade
unleaded gasoline must be used.
If standard unleaded gasoline is unavailable
and you have to refuel with unleaded gasoline
of a lower grade, observe the following pre-
cautions: R
Only fill the fuel tank to half full with regular
unleaded gasoline and fill the rest with pre-
mium-grade unleaded gasoline as soon as
possible. R
Do not drive at the maximum speed. R
Avoid sudden acceleration and engine
speeds over 3,000 rpm.
You will usually find information about the fuel
grade on the fuel pump. If you cannot find the
label on the fuel pump, ask the gas station staff.
i For further information, consult a qualified
specialist workshop or visit
http://www.mbusa.com (USA only).
As a temporary measure, if the recommended
fuel is not available, you may also use regular
unleaded gasoline with an octane rating of
87 AKI/91 RON. This may reduce engine per-
formance and increase fuel consumption. Avoid
driving at full throttle and sudden acceleration.
Never refuel using gasoline with a lower AKI.
Information on refueling .
Additives
! Operating the engine with fuel additives
added later can lead to engine failure. Do not
mix fuel add itives w ith fuel. This does not
i
nclude additives for the removal and preven-
tion of residue buildup. gasoline must only be
mixed with additives recommended by Mercedes-Benz. Comply with the instructions
for use on the product label. More information
about recommended additives can be
obtained from any authorized Mercedes-Benz
Center.
Mercedes-Benz recommends that you use bran-
ded fuels that have additives.
The fuel quality available in some countries may
not be sufficient. Residue could build up in the
fuel injection system as a result. In such cases,
and in consultation with an authorized
Mercedes-Benz Center, the fuel may be mixed
with the cleaning additive recommended by
Mercedes-Benz. You must observe the notes
and mixing ratios specified on the container.
Engine oil
General notes
! Do not use engine oil or an oil filter with
specifications deviating from those expressly
required for the prescribed service intervals.
Do not change the engine oil or oil filter in
order to set replacement intervals longer than
those prescribed. This could otherwise cause
damage to the engine or exhaust gas after-
treatment.
Follow the instructions on the service interval
display for changing the engine oil. This could
otherwise cause damage to the engine or
exhaust gas aftertreatment.
When handling engine oil, observe the important
safety notes on service products ( Y
page 377).
The engine oils are matched to the performance
of Mercedes-Benz engines and service intervals.
You should therefore only use engine oils and oil
filters that are approved for vehicles with main-
tenance systems.Service products and filling capacities 379
Technical data Z

For a list of approved engine oils and oil filters,
consult an authorized Mercedes-Benz Center.
Or visit the website
http://bevo.mercedes-benz.com.
The table shows which engine oils have been
approved for your vehicle.
Model MB-Freigabe or
MB-Approval
Mercedes-AMG vehicles
229.5
All other models
229.5, 229.6
Use only SAE 0W-40 or SAE 5W-40 engine oils
for Mercedes-AMG vehicles.
i MB approval is indicated on the oil contain-
ers.
Filling capacities The following values refer to an oil change
including the oil filter.
Model Capacity
Mercedes-AMG
GLC 63 4MATIC+
Mercedes-AMG
GLC 63 S 4MATIC+ 9.5 US qt (9.0 l)
Al l ot her models
6.9 US qt (6.5 l)
Ad ditives
! Do not use any additives in the engine oil.
This could damage the engine.
Brake fluid
G WARNING
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
( Y
page 377).
The brake fluid change intervals can be found in
the Maintenance Booklet.
Only use brake fluid approved by Mercedes-
Benz in accordance with MB-Freigabe or MB-
Approval 331.0.
Information about approved brake fluid can be
obtained at any qualified specialist workshop or
on the Internet at
http://bevo.mercedes-benz.co m.
i Have the brake fluid regularly replaced at a
qualified specialist workshop in accordance
with the replacement intervals and the
replacement confirmed in the Maintenance
Booklet.
Coolant
Important safety notes
G WARNING
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 premixed
with the desired antifreeze protection. You
could otherwise damage the engine.
Further information on coolants can be found
in the Mercedes-Benz Specifications for Ser-
vice Products, MB BeVo 310.1, e.g. on the
Internet at
http://bevo.mercedes-benz.com . Or con-
tact a qualified specialist workshop.
! Always use a suitable coolant mixture, even
in countries where high temperatures prevail.
Otherwise, the engine cooling system is not
sufficiently protected from corrosion and
overheating.
i Have the coolant regularly replaced at a
qualified specialist workshop and the replace-
ment confirmed in the Maintenance Booklet.380
Service products and filling capacities
Technical data

Comp ly wit h the impo rtant safety notes for ser-
vice products when han dlin g coolant
( Y
page 377).
The coolant is a mixture of water and ant i-
freeze/corrosion inh ibit or. It performs the fol-
lowin g tasks: R
anti-corrosion protection R
antifreeze protection R
raising the boilin g poin t
If the coolant has antifreeze protection down to
-35 ‡ (-37 †), the boilin g poin t of the coolant
during operation is appr oximately 266 ‡
(130 †).
The antifreeze concentrate /c orrosion inh ibit or
concentration in the engine co olin g system
sho uld: R
be at least 50 %. This will protect the engine
co olin g system against freezing down to
approximate ly -35 ‡ (-37 †).R
not exceed 55% (antifreeze protection down
to -49 ‡[ -45 †]). Otherwise, heat will not be
dissipated as effectively
Mercedes-Benz recommends an antifreeze/
corrosion inhibitor concentrate in accordance
with MB Specifications for Service Products
310.1.
i When the vehicle is first delivered, it is filled
with a coolant mixture that ensures adequate
antifreeze and anti-corrosion protection.
i The coolant is checked with every mainte-
nance interval at a qualified specialist work-
shop.
Filling capacities Model Capacity
Mercedes-AMG
GLC 43 4MATIC 12.2 US qt (11.5 l)
Mercedes-AMG
GLC 63 4MATIC+
Mercedes-AMG
GLC 63 S 4MATIC+ 11.7 US qt (11.1 l)
Al l ot her models
12.7 US qt (12.0 l) Windshield washer system
Important safety notes
G WARNING
Windshield washer concentrate could ignite if
it comes into contact with hot engine compo-
nents or the exhaust system. There is a risk of
fire and injury.
Make sure that no windshield washer con-
centrate is spilled next to the filler neck.
! Only use washer fluid that is suitable for
plastic lamp lenses, e.g. MB SummerFit or MB
WinterFit. Unsuitable washer fluid could dam-
age the plastic lenses of the headlamps.
! Only MB SummerFit and MB WinterFit
washer fluid should be mixed together. The
spray nozzles may otherwise become
blocked.
Do not use distilled or de-ionized water. Other-
wise, the level sensor may give a false reading.
When handling washer fluid, observe the impor-
tant safety notes on service products
( Y
page 377).
At temperatures above freezing: X
Fill the washer fluid reservoir with a mixture of
water and windshield washer fluid, e.g. MB
SummerFit.
Add 1 part MB SummerFit to 100 parts water.
At temperatures below freezing: X
Fill the washer fluid reservoir with a mixture of
water and washer fluid, e.g. MB WinterFit.
For the correct mixing ratio refer to the infor-
mation on the antifreeze reservoir.
i Add windshield washer fluid, e.g. MB Sum-
merFit or MB WinterFit, to the washer fluid all
year round.
Climate control system refrigerant
Important safety notes
The climate control system of your vehicle is fil-
led with refrigerant R ‑ 134a.
The instruction label regarding the refrigerant
type used can be found on the radiator cross
member.Service products and filling capacities 381
Technical data Z

! Only the refrigerant R ‑ 134a and the PAG oil
approved by Mercedes-Benz may be used.
The approved PAG oil may not be mixed with
any other PAG oil that is not approved for
R-134a refrigerant. Otherwise, the climate
control system may be damaged.
Service work, such as refilling with refrigerant or
replacing component parts, may only be carried
out by a qualified specialist workshop. All appli-
cable regulations, as well as SAE standard J639,
must be adhered to.
Always have work on the climate control system
carried out at a qualified specialist workshop.
Refrigerant instruction label
Example: refrigerant instruction labelC
Warning symbolD
Refrigerant filling capacity

Missing values were not available at time of
going to print.
Mercedes-AMG
GLC 43 4MATIC
Vehicle length
183.5 in (4661 mm)
Vehicle width
including exterior
mirrors 82.5 in (2096 mm)
Vehicle height
64.1 in (1627 mm)
Wheelbase
113.1 in (2873 mm)
Turning radius
39.7 ft (12.10 m)
Maximum roof load
165 lb (75 kg)
Mercedes-AMG
GLC 63 4MATIC+
Vehicle length
184.2 in (4679 mm)
Vehicle width
including exterior
mirrors 82.5 in (2096 mm)
Vehicle height
63.8 in (1620 mm)
Wheelbase
113.1 in (2873 mm)
Turning radius
39.7 ft (12.10 m)
Maximum roof load
165 lb (75 kg)
Mercedes-AMG
GLC 63 S 4MATIC+
Vehicle length
184.3 in (4682 mm)
Vehicle width
including exterior
mirrors 82.5 in (2096 mm)
Vehicle height
64.0 in (1625 mm)
Wheelbase
113.1 in (2873 mm)
Turning radius
39.7 ft (12.10 m)
Maximum roof load
165 lb (75 kg) All other models
Vehicle length
183.3 in (4656 mm)
Vehicle width
including exterior
mirrors 82.5 in (2096 mm)
Vehicle height
65.5 in (1664 mm)
Wheelbase
113.1 in (2873 mm)
Turning radius
38.7 ft (11.80 m)
Maximum roof load
165 lb (75 kg)
Vehicle data for off-road driving
Maximum water depth
! The water depth must not exceed the speci-
fied value. Note that the permissible water
depth is less in flowing water.
Maximum water depth C when the vehicle is
ready to drive can be found in the following
table.
When the vehicle is loaded and ready to drive, it
has a full tank, all fluids have been refilled and
the driver is in the vehicle.
Further information about driving on flooded
roads ( Y
page 165).Vehicle data for off-road driving 383
Technical data Z

App roa ch/depa rt ure angle
When th e vehicl e is loade d and read y to drive, it
has a full tank, all fluid s hav e been refilled and
th e driver is in th e vehicle.
On vehicles wit h AI R BODY CONTROL loads up
to th e maximum permissibl e load hav e no influ-
ence on approac h and departur e angles.
Maximum gradient-cli mb ing capabil-
ity Not e that th e vehicle's gradient-climbing capa-
bilit y depend s on th e off-road condition s and th e
road surfac e conditions.
If th e load on th e fron t axl e is reduce d when
pullin g away on a steep uphil l slope, th e fron t
wheels hav e a tendency to spin . Accelerate
carefully and mak e sur e that th e wheels do no t
spin when drivin g on steep terrain .
Trailer tow hitch
Trailer loads
Per mi ssible trailer load, braked (at a
mi nimum gradient-cli mb ing capability
of 12% fr om a standstill)
Model
All models
3500 lb (1588 kg)
Maximum drawbar noseweight
! Use a drawbar noseweight as close as pos -
sibl e to th e maximum permissibl e nose-
weight. Do no t use a noseweight of less than
50 kg, otherwise th e trailer may come loose. Not e that th e payload and th e rear axl e load
are reduce d by th e actual payload .
The drawbar load reduce s th e permissibl e over-
all load and rear axl e load.
The drawbar load act s from abov e onto th e ball
head on th e trailer to w hitch .
The drawbar noseweight is no t included in th e
trailer load.
Model Permissible nose-
weigh t
All models
28 0 lbs (12 7 kg)
The actual noseweight may no t be higher than
th e value whic h is given . The value can be foun d
on th e trailer to w hitch or trailer identification
plates. The lowes t weigh t applies.
The maximum permissibl e trailer drawbar nose-
weigh t is th e maximum weigh t wit h whic h th e
trailer drawbar can be loaded. The permissibl e
trailer drawbar noseweight is th e limi t for
Mercedes-Benz-approved trailer couplings.
Per mi ssible rear axle load when tow-
ing a trailer Missing value s were no t available at time of
goin g to print .
Model Permissible axle
load
Mercedes-AMG
GLC 43 4MATIC 2822 lbs (1280 kg)
Mercedes-AMG
GLC 63 4MATIC+/
GLC 63 S 4MATIC+ 2910 lbs (1320 kg)
All other models384
Trailer tow hitch
Technical data

Ball position of the ball coupling
When the ball coupling is selected, the following
dimensions must not be exceeded:
C
7.0 in
D
0.625 in

386

387

388