MERCEDES-BENZ GLC SUV 2022 Owners Manual

fuel with a sulphur content less than
50 ppm.
Never refuel with one of the following fuels: = P
etrol
= Marine diesel
= Heating oil
= Pure bio-diesel or vegetable oil
= ParaPn or kerosene
If you have accidentally refuelled with the
wrong fuel: 
Do not switch on the vehicle. 
Consult a q
ualiNed specialist workshop.*
NOTE Do no
t use diesel to refuel vehicles
with a petrol engine If you have accidentally refuelled with the
wr
ong fuel:
= Do not switch on the vehicle. Otherwise
fuel can enter the engine. Even small amounts of the wrong fuel
could r

esult in damage to the fuel system
and the engine. The repair costs are high. 
Consult a q
ualiNed specialist workshop. 
Have the fuel tank and fuel lines drained
com

pletely. *
NOTE Do no
t use petrol to refuel vehicles
with a diesel engine If you have accidentally refuelled with the
wr
ong fuel:
= Do not switch on the vehicle. Otherwise,
fuel can enter the fuel system.
Even small amounts of the wrong fuel
could result in damage to the fuel system
and the engine. The repair costs are high. 
Consult a q
ualiNed specialist workshop. 
Have the fuel tank and fuel lines drained
com

pletely. *
NOTE Damag
e to the fuel system due to
overNlling the fuel tank 
Only Nll t
he fuel tank until the pump noz-
zle switches oM.
If too much fuel has been added due, for
e
xample, to a faulty Nlling pump: 
Do not switch on the vehicle. 
Consult a q
ualiNed specialist workshop. *
NOTE F
uel may spray out when you
remove the fuel pump nozzle 
Only Nll t
he fuel tank until the pump noz-
zle switches oM. Requirements:
= The v

ehicle is unlocked.
= Plug-in hybrid with petrol engine: The fuel tank
was vented before refuelling (  page 210).
This function is country-dependent.
Observe the notes on service Ouids and fuel. 208
Driving and parking

The recommended octane number for your vehi-
cle can be f
ound on the information label in the
fuel Nller Oap. 1
Fuel Nller Oap
2 Bracket for fuel Nller cap
3 Tyre pressure table
4 QR code for rescue card
5 Fuel type %
Plug-in hybrid with petrol engine: The fuel Nller
Oap opens aut
omatically aser the fuel tank
has been vented ( page 210). 
Press on the rear part of fuel Nller Oap 1. 
Turn the fuel Nller cap anti-cloc
kwise and
remove it. 
Insert fuel Nller cap fr
om above into bracket
2. 
Completely insert the pump nozzle into the
t
ank Nller neck, hook in place and refuel. 
Only Nll t
he fuel tank until the pump nozzle
switches oM.
% Vehicles with diesel engine: The t
ank Nller
neck is designed for refuelling at diesel Nlling
pumps.
Your vehicle is equipped with an incorrect
fuelling protection system to prevent Nlling up
with the wrong fuel. This function may be
deactivated in some countries due to local cir-
cumstances. For more information, consult a
Mercedes-Benz service centre. %
Vehicles with diesel engine: R
efuel with at
least 5 litres of diesel if the fuel tank has been
run dry completely.
% Vehicles with diesel engine: Use a Nller nec
k
with a large diameter for vehicles with diesel
engine when topping up fuel from a fuel can.
Otherwise, the Nller neck cannot be pushed
into the tank shas.
Your vehicle is equipped with an incorrect
fuelling protection system to prevent Nlling up
with the wrong fuel. This function may be
deactivated in some countries due to local cir-
cumstances. For more information, consult a
Mercedes-Benz service centre. 
Replace the cap on the Nller nec
k and turn
clockwise until it engages audibly. 
Close fuel Nller Oap 1. Driving and parking
209

Depressurising the fuel tank (plug-in hybrid with
pe trol engine) 
Pull switch 1 once br
ieOy.
Indicator lamp 2 will Oash and the Please
wait Depressurising fuel tank message will
appear on the driver's display.
When the fuel tank is depressurised, indicator
lamp 2 will light up continuously. The Fuel tank is depressurised Ready for
refuelling
messag

e will appear on the driver's
display and the fuel Nller Oap will open auto-
matically.
% Depressurising the fuel tank may take several
minut

es.
The fuel tank can be depressurised only if the
conditions descr
ibed above are fulNlled. Other-
wise, drive the vehicle at least 0.5 km and repeat
the process.
% In the following situations, there is a malfunc-
tion:
= Indicat

or lamp 2 Oashes initially and then
goes out.
= The yellow engine diagnostics warning
lamp

Do not ingest AdBlue
n
. If A dBluen
is swallowed,
immediately rinse your mouth out thoroughly.
Drink plenty of water. Seek medical attention at
once.
Observe the notes on operating Ouids
( page 441).
AdBlue n
is available here:
= AdBlue n
can be topped up by fast service at a
qualiNed specialist workshop, e.g. a
Mercedes-Benz Service Centre.
= AdBlue n
is available at many Nlling stations
from AdBlue n
Nlling pumps.
= Alternatively, AdBlue n
is available at qualiNed
specialist workshops, e.g. Mercedes-Benz
Service Centres, and at many Nlling stations in
AdBlue n
reNll canisters or AdBlue n
reNll bot-
tles.
% Ensure the connection between the r
eNll con-
tainer and vehicle Nller neck does not drip.
qR
eNlling
AdBluen
* NOTE Engine damag
e due to AdBluen
being in the fuel 
AdBlue n
mus
t not be used to Nll the fuel
tank. 
Only use AdBlue n
t
o Nll the AdBlue n
tank. 
Do not o
verNll the AdBluen
tank. *
NOTE Cont
amination of the vehicle inte-
rior due to AdBlue n
leakage 
Aser t
opping up, carefully close the
AdBlue n
reNll container. 
Avoid carrying AdBlue n
r
eNll containers
permanently in the vehicle. Requirements:
= The v

ehicle is unlocked. The following messages appear in order in the
dr

iver's display when the AdBlue n
tank requires
reNlling:
= Refill AdBlue See Owner

Plug-in hybrid:
The f
ollowing messages appear in order in the
driver's display when the AdBlue n
tank requires
reNlling:
= Refill AdBlue See Owner


Screw on the fastener of AdBlue n
r eNll canis-
ter 4. 
Screw the disposable hose 3 ont
o the open-
ing of AdBlue n
reNll canister 4 until hand-
tight. 
Screw the disposable hose 3 ont
o the Nller
neck of the vehicle until hand-tight. 
Lis up and tip A
dBluen
reNll canister 4.
The Nlling process stops when the AdBlue n
tank is completely full.
AdBlue n
reNll canister 4 can be removed
when it has been only partially emptied. 
Unscrew and close the disposable hose 3
and A
dBluen
reNll canister 4 in reverse
order. 
Replace AdBlue n
Nller cap 2 and tur
n it
clockwise until it audibly engages. 
Close fuel Nller Oap 1. 
Switch on the vehicle for at least 60 seconds.
% If the vehicle could not be started as the
A

dBlue n
tank was empty, it can take up to
60 seconds for the reNll to be detected. 
Start the vehicle.
% Avoid storing AdBlue n
r
eNll containers perma-
nently in the vehicle. Charging the high-voltage battery (plug-in
h
ybrid) Notes on charging the high-voltage battery
*
NOTE High-v
oltage battery damage due to
leaving the vehicle idle for lengthy periods
of time Lithium-ion batteries experience a natural self-
disc
harge.
Exhaustive discharging can therefore occur if
the vehicle is idle for several months. This can
damage the high-voltage battery. 
To avoid damage, please observe the fol-
lo

wing recommendations when handling
the high-voltage battery. *
NOTE A
ccelerated ageing of the high-volt-
age battery due to not observing the fol-
lowing recommendations As a result of its basic characteristics, the
s
torage capacity of and the amount of energy
available from the high-voltage battery decrea- Driving and parking
213

ses over the course of its life. Due to this, both
t he maximum electrical range that can be ach-
ieved by the vehicle and its maximum electri-
cal output can be impaired.
The following factors could accelerate the age-
ing of the high-voltage battery:
= a high level of charge, especially if the
vehicle is idle for a lengthy period of time
= frequent rapid charging with direct current
(mode 4)
= leaving the vehicle idle for lengthy periods
at high ambient temperatures 
To avoid accelerated ageing, please
obser
ve the following recommendations
when handling the high-voltage battery. Recommendations when handling the high-voltage
batt
ery:
= Only charge the high-voltage battery with
direct current (mode 4) if necessary.
= If leaving the vehicle idle for lengthy periods,
park up the vehicle with a high-voltage battery
charge level between 25% and 30%. Do not keep the high-voltage battery continuously
connect
ed to power supply equipment.
= If leaving the vehicle idle for lengthy periods of
time avoid, if possible, high ambient tempera-
tures.
= Check the high-voltage battery's charge level
every six weeks (  page 231).
= Charge the high-voltage battery if the charge
level is below 15%.
= Do not disconnect the 12 V battery even if the
vehicle is les idle for a lengthy period. Other-
wise, the condition of the vehicle's high-volt-
age battery cannot be monitored.
Depending on the equipment and national ver-
sion, your vehicle is equipped with one of the fol-
lowing vehicle sockets:
= Type 1 for charging with alternating current
(mode 2/3)
= Type Combo 1 for charging with alternating
current (mode 2/3) and charging with direct
current (mode 4)
= Type 2 for charging with alternating current
(mode 2/3) =
T ype Combo 2 for charging with alternating
current (mode 2/3) and charging with direct
current (mode 4) Combo 1 vehicle socket214
Driving and parking

Combo 2 vehicle socket
1
Type 1 or type 2 connection for charging with
alt
ernating current
2 Socket extension for charging with direct cur-
r
ent
% When using a CCS (Combined Charging Sys-
t
em) charging cable to charge with direct cur-
rent at a combo vehicle socket, both vehicle socket connections
1 and 2 ar
e used for
charging.
Charging options for the high-voltage battery
(mode 2, 3 or 4): = Char

ging through recuperation while the vehi-
cle is in motion
= Charging with alternating current when sta-
tionary:
- at a mains socket (mode 2)
- at a wallbox or charging station (mode 3)
= Charging with direct current when stationary
(vehicles with combo vehicle sockets):
- at a rapid charging station (mode 4)
Depending on the country-speciNc vehicle equip-
ment and your vehicle's charging cable, single
phase AC charging is also possible.
Observe the diMerent grid requirements of your
current location when charging. Only use charging
cables which conform to the grid requirements.
Consult a qualiNed electrician or your local grid
operator if you have any questions. It is recommended that you charge the high-volt-
ag

e battery at a wallbox or charging station due to
the improved charging performance and better
charging ePciency oMered.
System limits
The power output of the high-voltage battery may
be impaired by the following:
= High or low outside temperatures
= Electrical auxiliary consumers in the vehicle
being switched on, e.g. operating the air con-
ditioning system
= Extended periods without charging
The charging time of the high-voltage battery may
be increased by the following:
= High or low outside temperatures
= Extended periods without charging
= The maximum available charge current of the
charging facility Driving and parking
215

Stowing the charging cable
Always stow the vehicle's charging cable in the
c
harging cable bag provided, and secure the
charging cable bag in the boot or load compart-
ment with the included retaining strap. Otherwise,
the charging cable bag with the charging cable is
not suPciently secured. Example: charging cable bag in the boot/load com-
par

tment As delivered, charging cable bag
1 wit
h retaining
strap 2 is located in the boot or load compart-
ment. To secure the charging cable bag, the
retaining strap must be attached to tie-down eye
3. Do not use bag hooks to attach the retaining
strap. 
Feed the loop end of retaining strap 2
t
hrough tie-down eye 3 into the boot or load
compartment. 
Feed the end with the snap hook through the
loop of r
etaining strap 2. 
Tighten retaining strap 2 so t
hat the knot
around tie-down eye 3 is tight and secure. 
Hook the snap hook of retaining strap 2 in a
tie-do
wn eye of charging cable bag 1.216
Driving and parking

Notes on charging the high-voltage battery at the
mains soc ket (mode 2) &
DANGER Risk of f
atal injury from incor-
rectly installed component parts
Connecting the charging cable to a mains
soc
ket using incorrectly installed component
parts could cause a Nre or an electric shock,
for example. 
Only connect the charging cable to a
mains soc
ket that:
= Has been pr
operly installed and
= Has been inspected by a qualiNed electri-
cian 
For safety reasons, only use the charging
cable supplied wit

h the vehicle or an
original Mercedes!