2018 MERCEDES-BENZ GLC COUPE lock

Problems with the "Cooling with air dehumidification" function
ProblemPossible causes/consequences andMSolutions
The indicator lamp above
the¿ rocker switch
remains off. The cooling
with air dehumidification
function cannot be acti-
vated via the multimedia
system any longer
(
Ypage 271).
Cooling with air dehumidification has been deactivated due to a mal-
function.
XVisit a qualified specialist workshop.
Setting climate control to automatic
General notes
In automatic mode, the set temperature is main-
tained automatically at a constant level. The
system automatically regulates the temperature
of the dispensed air, the airflow and the air dis-
tribution.
During automatic controlling, the "Cooling with
air dehumidification" function is activated.
Automatic control
XTurn the SmartKey to position 2in the igni-
tion lock (Ypage 130).
XTo activate: press theÃrocker switch up
or down.
The indicator lamp above the Ãrocker
switch lights up.
XSet the desired temperature using the w
rocker switch on the front control unit.
XTo switch to manual operation: press the
H rocker switch up or down.
or
XPress the _rocker switch up or down.
The indicator lamp above the Ãrocker
switch goes out.
In automatic mode, if you adjust the airflow or
air distribution manually, the indicator lamp
above the Ãrocker switch goes out. The
function which has not been changed manually,
however, continues to be controlled automati-
cally. When the manually set function switches
back to automatic mode, the indicator lamp
above the Ãrocker switch lights up again.
Adjusting the climate mode settings
This function is only available with 3-zone auto-
matic climate control.
In automatic mode you can select the following
airflow settings for the driver's and front-
passenger areas:
FOCUS high airflow, slightly cooler setting
MEDIUM medium airflow, standard setting
DIFFUSE low airflow, slightly warmer and draft-
free setting
XTo set:set the climate mode using the mul-
timedia system (Ypage 271).
Setting the temperature
Dual-zone automatic climate control
Different temperatures can be set for the driv-
er's and front-passenger sides.
XTurn the SmartKey to position 2in the igni-
tion lock (Ypage 130).
XTo increase or reduce: press thew
rocker switch up or down.
Only change the temperature setting in small
increments. Start at 72 ‡ (22 †).
Dual-zone automatic climate control
General notes
You can select different temperature settings
for the driver's and front-passenger sides as well as for the rear compartment.
122Operating the climate control systems
Climate control

Setting the temperature in the front com-
partment using the front control panel
XTurn the SmartKey to position2in the igni-
tion lock (Ypage 130).
XTo increase or reduce: press rocker switch
w up or down.
Only change the temperature setting in small
increments. Start at 72 ‡ (22 †).
Setting the temperature in the rear com-
partment using the rear control panel
XTurn the SmartKey to position 2in the igni-
tion lock (Ypage 130).
XTo increase or reduce: press thew
rocker switch on the rear control panel up or
down (
Ypage 119).
Only change the temperature setting in small
increments. Start at 72 ‡ (22 †).
The set temperature appears on the rear-
compartment display.
Setting the air distribution
Air distribution settings
¯ Directs air through the defroster vents
P Directs air through the center and side air
vents
O Directs air through the footwell air vents
S Directs air through the center, side and
footwell vents
a Directs air through the defroster and
footwell vents
_ Directs air through the defroster, center,
side and footwell vents
b Directs air through the defroster, center
and side air vents
W Sets the air distribution to automatic
Setting
3-zone automatic climate control: you can set
the air distribution separately for the driver's
and front-passenger side.
XTurn the SmartKey to position 2
(Ypage 130).
XPress the _rocker switch up or down.
The various air distribution settings appear in
the multimedia system.
Setting the airflow
Setting the front-compartment airflow
XTurn the SmartKey to position 2in the igni-
tion lock (Ypage 130).
XTo increase or reduce: press rocker switch
H up or down.
Setting the rear compartment airflow
using the rear control panel
It is only possible to set the airflow using the rear
control panel on vehicles with 3-zone automatic
climate control.
You can set the airflow separately for the front
and rear compartment.
XTurn the SmartKey to position 2in the igni-
tion lock (Ypage 130).
XTo increase or reduce: press rocker switch
K orI on the rear control panel up or
down.
The selected airflow level appears in the rear
display.
Activating or deactivating the syn-
chronization function
General notes
The "Synchronization" function is available only
with dual-zone automatic climate control and 3-
zone automatic climate control.
Climate control can be set centrally using the
synchronization function. The temperature set-
ting is adopted for the front-passenger side. For
3-zone automatic climate control, the tempera- ture setting is adopted for the front-passenger
side and rear compartment.
Activating/deactivating
Dual-zone automatic climate control
XPress the 0rocker switch up or down.
The indicator lamp above the 0rocker
switch lights up or goes out.
The synchronization function deactivates if the
settings for the front-passenger side are
changed.
Operating the climate control systems123
Climate control

3-zone automatic climate control
XActivate or deactivate the "Synchronization"
function using the multimedia system
(
Ypage 271).
The synchronization function is deactivated:
Rif the settings for the front-passenger side are
changed
Rthe settings for the rear compartment are
changed
Defrosting the windshield
General notes
You can use this function to defrost the wind-
shield or to clear a fogged up windshield or front
side windows on the inside.
Switch off the "Windshield defrosting" function
as soon as the windshield is clear again.
Switching the "Windshield defrosting"
function on or off
XTurn the SmartKey to position 2in the igni-
tion lock (Ypage 130).
XTo switch on: press rocker switch ¬on
the front control unit up or down.
The indicator lamp above the ¬rocker
switch lights up. The current climate control
settings are deactivated.
The climate control system switches to the
following functions:
Rhigh airflow
Rhigh temperature
Rair distribution to the windshield and front
side windows
Rair-recirculation mode off
iIf necessary, the "Cooling with air dehumid-
ification" function is activated. In this case,
the indicator lamp above the ¿rocker
switch remains switched off.
XTo switch off: press rocker switch ¬up or
down.
The indicator lamp above the ¬rocker
switch goes out. The previously selected set- tings are restored. Air-recirculation mode
remains deactivated.
Defrosting the windows
Windows fogged up on the inside
XActivate the "Cooling with air dehumidifica-
tion" function with the ¿rocker switch.
XSwitch on automatic mode using the Ã
rocker switch.
XIf the windows continue to fog up, activate the "Windshield defrosting" function using the
¬ rocker switch.
iYou should only select this setting until the
windshield is clear again.
Windows fogged up on the outside
XActivate the windshield wipers.
XSwitch on automatic mode using the Ã
rocker switch.
iIf you clean the windows regularly, they do
not fog up so quickly.
Rear window defroster
General notes
The rear window defroster has a high current
draw. You should therefore switch it off as soon
as the rear window is clear. Otherwise, the rear
window defroster switches off automatically
after several minutes.
If the battery voltage is too low, the rear window defroster may switch off.
Activating/deactivating
XTurn the SmartKey to position 2in the igni-
tion lock (Ypage 130).
XPress rocker switch ¤up or down.
The indicator lamp above rocker switch ¤
lights up or goes out.
124Operating the climate control systems
Climate control

Problems with the rear window defroster
ProblemPossible causes/consequences andMSolutions
The rear window
defroster has deactiva-
ted prematurely or can-
not be activated.The battery has not been sufficiently charged.
XSwitch off any consumers that are not required, e.g. reading lamps,
interior lighting or the seat heating.
When the battery is sufficiently charged, the rear window defroster
can be activated again.
Switches air-recirculation mode
on/off
General notes
You can also temporarily deactivate the flow of
fresh air manually if unpleasant odors are enter-
ing the vehicle from outside. The air already
inside the vehicle will then be recirculated.
If you switch on air-recirculation mode, the win-
dows can fog up more quickly, in particular at
low temperatures. Only use air-recirculation
mode briefly to prevent the windows from fog-
ging up.
Activating/deactivating
XTurn the SmartKey to position 2in the igni-
tion lock (Ypage 130).
XTo activate: press thegrocker switch up
or down.
The indicator lamp above the grocker
switch lights up.
Air-recirculation mode switches on automati-
cally:
Rat high outside temperatures
Rat high levels of pollution (3-zone automatic
climate control only)
Rin a tunnel (vehicles with a navigation system
only)
The indicator lamp above the grocker
switch is not lit when automatic air-recirculation
mode is activated. Outside air is added after
about 30 minutes.
XTo deactivate: press thegrocker switch
up or down.
The indicator lamp above the grocker
switch goes out. Air-recirculation mode deactivates automati-
cally:
Rafter approximately five minutes at outside
temperatures below approximately 41 ‡
(5 †)
Rafter approximately five minutes if cooling
with air dehumidification is deactivated
Rafter approximately 30 minutes at outside
temperatures above approximately 41 ‡
(5 †) if the "Cooling with dehumidification"
function is activated
Switching the residual heat on or off
General notes
The residual heat function is only available with
3-zone automatic climate control.
Once the engine is switched off, it is possible to
make use of the residual heat of the engine to
continue heating or ventilating the front com-
partment of the vehicle for approximately
30 minutes. The heating or ventilation time
depends on the interior temperature that has
been set.
Activating/deactivating
XTurn the SmartKey to position uin the igni-
tion lock or remove it (Ypage 130).
XTo activate: press the!rocker switch up
or down.
The indicator lamp above the !rocker
switch lights up.
The blower will run at a low speed regardless of
the airflow setting.
If you activate the residual heat function at high
temperatures, only the ventilation will be acti-
vated. The blower runs at medium speed.
Operating the climate control systems125
Climate control

XTo refill the perfume vial:unscrew the lid of
the empty perfume vial to refill it yourself.
XFill the perfume vial with a maximum of
0.5 fl. oz. (15 ml) of the desired liquid per-
fume.
XScrew the lid back on to the vial.
!Only refill the perfume vial when you are
outside the vehicle. Otherwise, liquid perfume
could drip into the interior and contaminate it. Always refill the empty refillable vial with the
same perfume. Otherwise, you might not ach-
ieve optimum results from the perfume atom-
izer.
Problems with the perfume atomizer
ProblemPossible causes/consequences and
MSolutions
The vehicle interior is not
perfumed although the
perfume atomizer is acti-
vated.The perfume vial has not been pushed into the holder as far as it will
go.
XSlide the perfume vial into the holder as far as it will go.
The perfume vial is not filled sufficiently.
XPre-filled vials:dispose of the empty vial.
XUse a new pre-filled vial.
XRefillable vials: refill the vial with a maximum of 0.5 fl. oz. (15 ml)
of the same perfume.
The perfume atomizer is faulty.
XHave the perfume atomizer checked at a qualified specialist work-
shop.
Ionization
Ionization is used to purify the air in the vehicle
interior and attain an improved interior climate.
The ionization of the interior air is odorless and
cannot be perceived directly in the vehicle inte-
rior.
You can switch ionization on/off using the mul-
timedia system (
Ypage 271).
Ionization can only be operated when the auto-
matic climate control is switched on. The side air
vent on the driver's side must be open.
Air vents
Important safety notes
GWARNING
Very hot or very cold air can flow from the air
vents. This could result in burns or frostbite in
the immediate vicinity of the air vents. There
is a risk of injury.
Make sure that all vehicle occupants always
maintain a sufficient distance to the air out-
lets. If necessary, redirect the airflow to
another area of the vehicle interior.
In order to ensure the direct flow of fresh air
through the air vents into the vehicle interior,
please observe the following notes:
Rkeep the air inlet between the windshield and
the hood free of blockages, such as ice, snow
or leaves.
Rnever cover the air vents or air intake grilles in
the vehicle interior.
Air vents127
Climate control
Z

Setting the air vents
Air vents are located:
Ron the left and right-hand side of the dash-
board
Rin the middle of the dashboard
Rin the rear center console, depending on the
equipment installed
Side air vent (example)
:Side window defroster vent
;Side air vent, left
=Control for left side air vent
XTo open or close:turn control=to the
counter-clockwise or clockwise as far as it will
go.
XTo adjust the air direction: hold side air
vent ;by control =and move it up or down
or to the left or right.
Adjusting the rear air vents (see the Digital
Operator's Manual).
128Air vents
Climate control

Notes on breaking-in a new vehicle
Important safety notes
The sensor system of some driving and driving
safety systems adjusts automatically while a
certain distance is being driven after the vehiclehas been delivered or after repairs. Full system
effectiveness is not reached until the end of this
teach-in procedure.
New and replaced brake pads and discs only
reach their optimum braking effect after several hundred kilometers of driving. Compensate for
this by applying greater force to the brake pedal.
The first 1,000 miles (1,500 km)
The more you look after the engine when it is
new, the more satisfied you will be with its per-
formance in the future.
RYou should therefore drive at varying vehicle
and engine speeds for the first 1,000 miles
(1,500 km).
RAvoid heavy loads, e.g. driving at full throttle,during this period.
RWhen changing gears manually, change up in
good time, before the tachometer needle rea-
ches Ôof the way to the red area of the tach-
ometer.
RDo not manually shift to a lower gear to brake
the vehicle.
RTry to avoid depressing the accelerator pedal
beyond the pressure point (kickdown).
RAll vehicles (except Mercedes-AMG vehi-
cles): ideally, for the first 1,000 miles
(1,500 km), drive in drive program E.
Additional breaking-in notes for Mercedes-AMG
vehicles:
RDo not drive faster than 85 mph (140 km/h)
for the first 1,000 miles (1,500 km).
ROnly briefly allow the engine to reach a max-
imum engine speed of 4,500 rpm.
RChange gear in good time.
RIdeally, for the first 1,000 miles (1,500 km),
drive in program C.
After 1,000 mile s(1,500 km), you can i
ncrease
the engine speed gradually and accelerate the
vehicle to full speed.
You should also observe these notes on break-
ing in if the engine or parts of the drive train on
your vehicle have been replaced. Always observe the maximum permissible
speed.
Locking rear axle differential
(Mercedes-AMG GLC 63 4MATIC+/
GLC 63 S 4MATIC+)
Your vehicle is equipped with a self-locking dif-
ferential on the rear axle.
Change the oil to improve protection of the rear
axle differential:
Rafter a breaking-in period of 1,850 miles
(3,000 km)
Revery 31,000 miles (50,000 km) or 3 years
These oil changes prolong the service life of the differential. Have the oil change carried out at a
qualified specialist workshop.
Driving
Important safety notes
GWARNING
Objects in the driver's footwell may restrict
the clearance around the pedals or block a
depressed pedal. This jeopardizes the oper-
ating and road safety of the vehicle. There is a risk of an accident.
Stow all objects securely in the vehicle so that
they do not get into the driver's footwell.
When using floormats or carpets, make sure
that they are properly secured so that they do not slip or obstruct the pedals. Do not place
several floormats or carpets on top of one
another.
GWARNING
Unsuitable footwear can hinder correct usage of the pedals, e.g.:
Rshoes with thick soles
Rshoes with high heels
Rslippers
There is a risk of an accident.
Wear suitable footwear to ensure correct
usage of the pedals.
Driving129
Driving and parking
Z

GWARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could affect, for example, the power steering and the brake
boosting effect. You will require considerably
more effort to steer and brake. There is a risk
of an accident.
Do not switch off the ignition while driving.
GWARNING
If the parking brake has not been fully
released when driving, the parking brake can:
Roverheat and cause a fire
Rlose its hold function.
There is a risk of fire and an accident. Release
the parking brake fully before driving off.
!Do not warm up the engine while stationary.
Pull away immediately. Avoid high engine
speeds and full throttle until the engine has
reached its operating temperature.
In vehicles with automatic transmission,
engage positions P and R only when the vehi-
cle is stationary.
Where possible, avoid spinning the drive
wheels when pulling away on slippery roads.
You could otherwise damage the drive train.
!Mercedes-AMG vehicles: at low engine oil
temperatures below 68 ‡ (+20 †), the max-
imum engine speed is restricted in order to
protect the engine. To protect the engine and
maintain smooth engine operation, avoid driv-
ing at full throttle when the engine is cold.
Key positions
SmartKey
gTo remove the SmartKey
1Power supply for some consumers, such as
the windshield wipers
2Ignition (power supply for all consumers)
and drive position
3To start the engine
iThe SmartKey can be turned in the ignition
lock even if it is not the correct SmartKey for
the vehicle. The ignition is not switched on.
The engine cannot be started.
Start/Stop button
General notes
When you insert the Start/Stop button into the
ignition lock, the system needs approximately
two seconds recognition time. You can then use
the Start/Stop button.
Pressing the Start/Stop button several times in
succession corresponds to the different Smart-
Key positions in the ignition lock. This is only the
case if you are not depressing the brake pedal.
If you depress the brake pedal and press the
Start/Stop button, the engine starts immedi-
ately.
A check which periodically establishes a radio
connection between the vehicle and the Smart-
Key determines whether a valid SmartKey is in
the vehicle. This occurs, for example, when
starting the engine.
130Driving
Driving and parking