2022 MERCEDES-BENZ GLC SUV Owners Manual

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!

Notes on charging the high-voltage battery at a
w
allbox or charging station (mode 3) &
DANGER Risk of f
atal injury from incor-
rectly installed component parts
Connecting the charging cable to a wallbox
using incor
rectly installed component parts
could cause a Nre or an electric shock, for
example. 
Only connect the charging cable to a
w
allbox that:
= Has been pr
operly installed and
= Has been inspected by a qualiNed electri-
cian 
For safety reasons, only use charging
cables t

hat have been tested and
approved by the manufacturer for charg-
ing the high-voltage battery in an electric
vehicle. 
Never use damaged charging cables. 
Do not extend the charging cable. 
Do not use adapters. 
Observe the safety notes in the operat-
ing ins
tructions for the wallbox. If charging at a wallbox without pre-installed
cable, use t

he optionally available charging cable
for wallbox and charging station (mode 3). The
charging cable is stowed in a bag in the boot/
luggage compartment.
Only use charging cables that have been tested
and approved by the manufacturer for charging
the high-voltage battery in an electric vehicle. &
DANGER Risk of f
atal injuries due to dam-
aged components
Connecting the charging cable to a charging
s
tation using a damaged component part
could cause a Nre or an electric shock, for
example. 
For charging stations with a preinstalled
c

harging cable:
= Perform a visual check of the charg-
ing station for obvious faults, such as
massive damage to the housing or
charging cable. 
For charging stations without a preinstal-
led c

harging cable:
= For safety reasons, only use charging
cables that have been tested and
approved by the manufacturer for
charging the high-voltage battery in
an electric vehicle.
= Never use damaged charging cables.
= Do not extend the charging cable.
= Do not use adapters. 
Make sure to observe the safety informa-
tion on t

he charging station. Most charging stations must be activated before
t

he charging process, e.g. using an RFID card.
Observe the on-site operator's instructions for the
charging station.
The amount of energy dispensed for the charging
process, shown by the charging station, may be
higher than the amount of energy actually absor-
bed by the high-voltage battery. This is the result
of diMerent levels of charging losses and is descri-
bed as recharge ePciency. Charging losses occur,
for example, due to heat that builds up when the 218
Driving and parking

vehicle is charging or from auxiliary consumers
t hat are switched on. Further information on
recharge ePciency can be obtained at a qualiNed
specialist workshop. Notes on charging the high-voltage battery at a
r

apid charging station (mode 4) &
DANGER Risk of f
atal injuries due to dam-
aged components
Connecting the charging cable to a charging
s
tation using a damaged component part
could cause a Nre or an electric shock, for
example. 
For charging stations with a preinstalled
c

harging cable:
= Perform a visual check of the charg-
ing station for obvious faults, such as
massive damage to the housing or
charging cable. 
For charging stations without a preinstal-
led c

harging cable:
= For safety reasons, only use charging
cables that have been tested and approved by the manufacturer for
c

harging the high-voltage battery in
an electric vehicle.
= Never use damaged charging cables.
= Do not extend the charging cable.
= Do not use adapters. 
Make sure to observe the safety informa-
tion on t

he charging station. &
DANGER Risk of f
atal injuries when carry-
ing out maintenance work during the
charging process
During the charging process, the high-voltage
on-boar
d electrical system is under high volt-
age. 
Do not perform any maintenance work
dur

ing the charging process. Most charging stations must be activated before
t

he charging process, e.g. using an RFID card.
Observe the on-site operator's instructions for the
charging station. The charging cable for the vehicle must not be
long
er than 30 m due to the legal requirements in
some countries. This is to prevent the interfer-
ence of signals being received by radio communi-
cation devices in the vehicle or in close proximity
to the charging station. Be aware that parts of the
charging cable may be routed underground. If in
doubt, ask the charging station operator if this is
the case before charging the high-voltage battery.
The amount of energy dispensed for the charging
process, shown by the charging station, may be
higher than the amount of energy actually absor-
bed by the high-voltage battery. This is the result
of diMerent levels of charging losses and is descri-
bed as recharge ePciency. Charging losses occur,
for example, due to heat that builds up when the
vehicle is charging or from auxiliary consumers
that are switched on. Further information on
recharge ePciency can be obtained at a qualiNed
specialist workshop. Driving and parking
219

Setting the maximum permissible charging cur-
r
ent for charging at a mains socket *
NOTE Ov
erloading the mains socket due
to excessive charging current If the charging current is too high, the fuse
could be tr
ipped or the external mains supply
could overheat. 
Ensure that the external mains supply
has been designed t

o handle the charg-
ing current provided. 
For safety reasons, only use the charging
cable supplied wit

h the vehicle or an
original Mercedes-Benz charging cable.
Mercedes-Benz thoroughly tests these
original charging cables for their suitabil-
ity for high-voltage charging of your vehi-
cle. 
Purchase these parts at a Mercedes-
Benz Ser

vice Centre and obtain advice
there. 
Check the maximum charging current
using t

he charging capacity shown in the
driver's display. The charging cable supplied is set to a
countr
y-
speciNc maximum charging current value. When
charging abroad, the maximum value may exceed
the permitted value for that country. 
Before charging at a mains socket, have the
maximum per

missible charging current for the
relevant mains socket or the building inspec-
ted by a qualiNed electrician. 
When abroad, observe the countr
y-speciNc
laws when charging.
If you have questions concerning the charging
cur
rent or if there is a malfunction, please contact
a qualiNed specialist workshop. Overview of the charging cable control panel
The charging cable control panel shows the cur-
r

ent status of the charging process. 1
Supply voltage indicator
2 Charging process indicator
3 Temperature monitor indicator
4 Safety system indicator
Supply voltage indicator 1 Display
Meaning
Lights up white The supply voltage is connect
ed. 220
Driving and parking

Charging process indicator
2Display
Meaning
Flashes green The high-voltage bat- tery is charging. Temperature control indicator
3Display
Meaning
Lights up red The green LED Oashes simult
aneously: over-
temperature !