light MERCEDES-BENZ GLC 2017 Workshop Manual

Switching cooling with air dehumidification on/off
General notes If you deactivate the "Cooling with air-dehumidification" function, the air inside the vehicle will not
be cooled. The air inside the vehicle will also not be dehumidified. The windows can fog up more
quickly. Therefore, only deactivate the "Cooling with air-dehumidification" function briefly.
The "Cooling with air dehumidification" function is only available when the engine is running. The air
inside the vehicle is cooled and dehumidified according to the temperature selected.
Condensation may drip from the underside of the vehicle when it is in cooling mode. This is normal
and not a sign that there is a malfunction.
Activating/deactivating X
Press the Z rocker switch up or down.
The indicator lamp above the rocker switch lights up or goes out.
Problems with the "Cooling with air dehumidification" function Problem
Possible causes/consequences and P Solutions
The indicator lamp above
the Z rocker switch
remains off. The cooling
with air dehumidification
function cannot be acti-
vated via the multimedia
system any longer
( Y
page 273). Cooling with air dehumidification has been deactivated due to a mal-
function. X
Visit 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 X
Turn the SmartKey to position H in the igni-
tion lock ( Y
page 132).X
To activate: press the X rocker switch up
or down.
The indicator lamp above the X rocker
switch lights up. X
Set the desired temperature using the

Adjusting the climate mod e settingsIn automatic mod e you can select th e followin g
airflow setting s for th e driver's and front-
passenger areas :
FOCUS high airflow, slightly cooler setting
MEDIUM medium airflow, standard setting
DIFFUS El ow airflow, slightly warmer and draft-
free settingX
To set: set the climate mode using the mul-
timedia system ( Y
page 272).
Setting the temperature Dual-zone automatic climate control: different
temperatures can be set for the driver's and
front-passenger sides. X
Turn the SmartKey to position H in the igni-
tion lock ( Y
page 132).X
To increase or reduce: press rocker switch

The climate control system switches to the
following functions: R
high airflow R
high temperature R
air distribution to the windshield and front
side windows R
air-recirculation mode off
i If necessary, the "Cooling with air dehumid-
ification" function is activated. In this case,
the indicator lamp above the Z rocker
switch remains switched off. X
To switch off: press rocker switch d up or
down.
The indicator lamp above the d 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 X
Activate the "Cooling with air dehumidifica-
tion" function with the Z rocker switch.X
Switch on automatic mode using the X
rocker switch. X
If the windows continue to fog up, activate the
"Windshield defrosting" function using the
d rocker switch. i You should only select this setting until the
windshield is clear again.
Windows fogged up on the outside X
Activate the windshield wipers. X
Switch on automatic mode using the X
rocker switch.
i If 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 X
Turn the SmartKey to position H in the igni-
tion lock ( Y
page 132). X
Press rocker switch l up or down.
The indicator lamp above rocker switch l
lights up or goes out.
Problems with the rear window defroster Problem
Possible causes/consequences and P Solutions
The rear window
defroster has deactiva-
ted prematurely or can-
not be activated. The battery has not been sufficiently charged. X
Switch 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.
Switching 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.Operating the climate control systems 127
Climate control

Activating/deactivating X
Turn th e SmartKey to position H in th e igni-
tion loc k ( Y
page 132).X
To activate: press rocke r switch r up or
down .
The indicator lamp abov e rocke r switch r
lights up.
Air-recirculation mod e switches on automati-
cally: R
at high outside temperatures R
in a tunne l (vehicles wit h a navigation system
only)
The indicator lamp abov e th e r rocke r
switch is no t lit when automatic air-recirculation
mod e is activated. Outside air is added after
about 30 minutes. X
To deactivate: press th e r rocke r switch
up or down .
The indicator lamp abov e th e r rocke r
switch goe s out .
Air-recirculation mod e deactivates automati-
cally: R
after approximately fiv e minute s at outside
temperatures belo w approximately 41 ‡
(5 †) R
after approximately fiv e minute s if coolin g
wit h air dehumidification is deactivatedR
after approximately 30 minute s at outside
temperatures abov e approximately 41 ‡
(5 †) if th e "Cooling wit h dehumidification "
function is activated
Perfu me atomizer
Operating the perfu me at omi zer
G WARNIN G
If children open th e vial, they could drink th e
perfum e or it could come int o contact wit h
their eyes. There is a ris k of injury. Therefore ,
do no t leav e children unsupervised in th e vehi-
cle .
If th e perfum e liquid has been drunk, consult
a doctor. If perfum e comes int o contact wit h
your eyes or skin, rinse th e eyes wit h clean
water. If you continu e to experience difficul-
ties, consult a doctor. H Environmenta l not e
Full vials mus t no t be dis-
posed of wit h household
waste. The y mus t be collec -
te d separately and recycle d
to protect th e environment.
Dispose of full vials in an
environmentally responsibl e
manne r and tak e them to a
harmful substance collec -
tion point.
C
Vial lid D
Vial
The perfum e atomizer help s to improve drivin g
comfort .
Via th e multimedia system you can :R
switch th e perfum e atomizer on/off
( Y
page 272) R
regulat e th e perfum e intensit y ( Y
page 272)
The followin g condition s can affec t your percep-
tion of th e perfum e intensity:R
operating mod e of th e climat e control systemR
interior temperature R
time of year or day R
air humidit y R
physiological condition of occupants, e.g. fati-
gue or hunger
The perfum e atomizer is active only when th e
glov e box is closed.
The perfum e atomizer is provided wit h a pre-fil-
led vial. You can also choos e from a variet y of
filled perfum e vials and an empty vial whic h you
can fill yourself .
If you refill an empty perfum e vial, observ e th e
separat e information sheet attached to th e vial.128
Operating the climate control systems
Climate control

G WARNING
Flammable materials introduced through
environmental influence or by animals can
ignite if in contact with the exhaust system or
parts of the engine that heat up. There is a risk
of fire.
Carry out regular checks to make sure that
there are no flammable foreign materials in
the engine compartment or in the exhaust
system.
General notes Vehicles with a gasoline engine: the catalytic
converter is preheated for up to 30 seconds
after a cold start. The sound of the engine may
change during this time.
Automatic transmission X
Shift the transmission to position ]
( Y
page 141).
The transmission position indicator on the
multifunction display shows ]
( Y
page 142).
i You can start the engine in transmission
position ] and \\ .
Starting procedure with the SmartKey To start the engine using the SmartKey instead
of the Start/Stop button, pull the Start/Stop
button out of the ignition lock. X
To start a diesel engine: turn the SmartKey
to position H in the ignition lock
( Y
page 132).
The \( preglow indicator lamp in the instru-
ment cluster lights up. X
Turn the SmartKey to position I in the igni-
tion lock ( Y
page 132) and release it as soon
as the engine is running.
i Vehicles with a diesel engine: you can
start the engine without preglow if the engine
is warm.
If the engine will not start: X
Remove the SmartKey from the ignition lock. X
Reinsert the SmartKey into the ignition lock
after a short waiting period. X
Turn the SmartKey to position H in the igni-
tion lock ( Y
page 132).
The indicator lamps in the instrument cluster
light up ( Y
page 256). X
Turn the SmartKey to position I in the igni-
tion lock ( Y
page 132) and release it as soon
as the engine is running.
Starting procedure with the Start/Stop
button The Start/Stop button is only available on vehi-
cles with KEYLESS-GO or the KEYLESS-GO start
function.
The Start/Stop button can be used to start the
vehicle manually without inserting the SmartKey
into the ignition lock. The Start/Stop button
must be inserted in the ignition lock and the
SmartKey must be in the vehicle. This mode for
starting the engine operates independently of
the ECO start/stop automatic engine start func-
tion.
You can start the engine if a valid SmartKey is in
the vehicle. Switch off the engine and always
take the SmartKey with you when leaving the
vehicle, even if you only leave it for a short time.
Pay attention to the important safety notes. X
Depress the brake pedal and keep it
depressed. X
Press the Start/Stop button once
( Y
page 133).
Vehicles with a gasoline engine: the engine
starts.
Vehicles with a diesel engine: preglow is
activated and the engine starts.
Starting procedure via smartphone Observe the important safety notes on starting
the engine ( Y
page 133).
You can also start your engine via your smart-
phone from outside the vehicle. In this case, the
previously selected climate control setting is
activated. In this way you can cool or heat the
interior of the vehicle before starting the jour-
ney.
Only start the engine via your smartphone if it is
safe to start and run the engine where your vehi-
cle is parked.
Observe the legal stipulations in the area where
your vehicle is parked. Engine start via smart-
phone may be limited to certain countries or
regions.134
Driving
Driving and parking

The ECO start/stop function is operational
when: R
the indicator lamp in the ECO button is lit
green R
the outside temperature and the atmospheric
air pressure is within the range that is suitable
for the system R
the engine is at normal operating temperature R
the set temperature for the vehicle interior
has been reached R
the battery is sufficiently charged R
the system detects that the windshield is not
fogged up when the air-conditioning system is
switched on R
the hood is closed R
the driver's door is closed and the driver's
seat belt is fastened
All of the vehicle's systems remain active when
the engine is stopped automatically.
The HOLD function can also be activated if the
engine has been switched off automatically. It is
then not necessary to continue applying the
brakes during the automatic stop phase. When
you depress the accelerator pedal, the engine
starts automatically and the braking effect of
the HOLD function is deactivated.
Automatic engine switch-off can take place a
maximum of four times in a row (initial stop, then
three subsequent stops).
Automatic engine start The engine starts automatically if: R
you switch off the ECO start/stop function by
pressing the ECO button R
you switch to drive program S+R
Mercedes-AMG vehicles: you permanently
activate manual gearshifting ( Y
page 145)R
in transmission position [ or \\ , the brake
pedal is released and the HOLD function is not
active R
you depress the accelerator pedal R
you engage reverse gear ^R
you move the transmission out of position ]R
you unfasten your seat belt or open the driv-
er's door R
the vehicle starts to roll R
the brake system requires this R
the temperature in the vehicle interior devi-
ates from the set range R
the system detects moisture on the wind-
shield when the air-conditioning system is
switched on R
the condition of charge of the battery is too
low
Shifting the transmission to position ] does
not start the engine.
Deactivating or activating the ECO
start/stop function Mercedes-AMG vehicles
X
To deactivate: press ECO button C .
Indicator lamp D goes out.X
To activate: press ECO button C .
Indicator lamp D lights up.
If indicator lamp D is off, the ECO start/stop
function has been switched off manually or as
the result of a malfunction. The engine will then
not be switched off automatically when the vehi-
cle stops.
The ECO start/stop function is deactivated, if: R
you switch to drive program S+
( Y
page 139) R
you permanently activate manual gearshifting
( Y
page 145)
If you have permanently activated manual gear-
shifting and then press ECO button C , the ECO
start/stop function is switched on. Driving 137
Driving and parking Z

All other mod els X
To deacti vat e: press ECO butto n C .
Indicato r lamp D goes out .X
To act iva te: press ECO butto n C .
Indicato r lamp D light s up.
If indicator lamp D is off , th e ECO start/sto p
function has been deactivate d manually or as
th e result of a malfunction. The engin e will then
no t be switched off automatically when th e vehi-
cle stops.
Selectin g driv e program S+ deactivate s th e ECO
start/sto p function . If you press ECO butto n C ,
th e ECO start/sto p function is activated.
Problems with the engine Problem
Possible causes/consequence s and P Solutions
The engin e does no t
start . The HOLD function or DISTRONI C PLU S is activated.X
Deactivat e th e HOLD function ( Y
page 172) or DISTRONI C PLU S
( Y
page 169). X
Try to start th e engin e again ( Y
page 133).
The engin e does no t
start . The starter motor
can be heard. R
Ther e is a malfunctio n in th e engin e electronics .R
Ther e is a malfunctio n in th e fuel supply.
Before attemptin g to start th e engin e again :X
Turn th e SmartKey bac k to positio n

Problem
Possible causes/consequences and P Solutions
The starter motor was exposed to a thermal load that was too high. X
Try to start the engine again ( Y
page 133).
If the engine still does not start: X
Consult a qualified specialist workshop.
Vehicles with a gasoline
engine:
The engine is not running
smoothly and is misfir-
ing. There is a malfunction in the engine electronics or in a mechanical
component of the engine management system. X
Only depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic converter
and damage it. X
Have the cause rectified immediately at a qualified specialist work-
shop.
The coolant temperature
gauge shows a value
above 248 ‡ (120 †). The coolant level is too low. The coolant is too hot and the engine is no
longer being cooled sufficiently. X
Stop as soon as possible and allow the engine and the coolant to
cool down. X
Check the coolant level ( Y
page 309). Observe the warning notes
as you do so and add coolant if necessary.
DYNAMIC SELECT switch
Mercedes-AMG GLC 43 4MATIC
General information Select the drive program using the DYNAMIC
SELECT switch.
Available drive programs:
S+ Sport Plus Particularly sporty driving
characteristics
S Sport Sporty driving characteris-
tics
C Comfort Comfortable and economi-
cal driving characteristics
E Economy Particularly economical
driving characteristics
I Individual Individual settings
Depending on the drive program selected the
following vehicle characteristics will change: R
the engine management R
the transmission management R
the suspension R
the steering R
the availability of the ECO start/stop function R
climate control R
the driver assistance systems R
the availability of gliding mode
Further information for automatic drive program
characteristics ( Y
page 144).
Additionally, in drive program I you can config-
ure the respective vehicle characteristics using
the multimedia system. You can find informa-
tion about this in the Digital Operator's Manual.
Each time you start the engine with the Smart-
Key or the Start/Stop button, drive program C is
activated. For further information about starting
the engine, see ( Y
page 133).DYNAMIC SELECT switch 139
Driving and parking Z

Temporary setting X
To activate: shift the DIRECT SELECT lever to
position [ .X
Pull steering wheel paddle shifter C or D .
Temporary setting will be active for a certain
amount of time. Under certain conditions the
minimum amount of time is extended, e.g. in the
case of lateral acceleration, during an overrun
phase or when driving on steep terrain. X
To deactivate: pull steering wheel paddle
shifter D and hold it in place.
or X
Use the DIRECT SELECT lever to switch the
transmission position.
or X
Use the DYNAMIC SELECT switch to change
the drive program.
Permanent setting (Mercedes-AMG
vehicles)
! In manual mode, the automatic transmis-
sion does not shift up automatically even
when the engine limiting speed for the current
gear is reached. When the engine limiting
speed is reached, the fuel supply is cut to
prevent the engine from overrevving. Always
make sure that the engine speed does not
reach the red area of the tachometer. There is
otherwise a risk of engine damage. X
To activate: shift the DIRECT SELECT lever to
position [ . X
Press button C .
Indicator lamp D lights up.X
To deactivate: press button C .
Indicator lamp D goes out.
Shifting gears
X
To shift up: pull steering wheel paddle
shifter D .
The automatic transmission shifts up to the
next gear.
If the maximum engine speed on the currently
engaged gear is reached and you continue to
accelerate, the automatic transmission auto-
matically shifts up in order to prevent engine
damage.
Mercedes-AMG vehicles: if the permanent
setting is activated, the automatic transmis-
sion does not shift up automatically even
when the engine limiting speed for the current
gear is reached. It is essential to ensure pro-
tection against reaching the overrevving
range in the multifunction display. Always146
Automatic transmission
Driving an d parking

switched off. The sounds that can be heard while
this is occurring are normal.
Applying or releasing manually X
To apply: push handle C .
When the electric parking brake is applied,
the red I (USA only) or $ (Canada
only) indicator lamp lights up in the instru-
ment cluster.
The electric parking brake can also be applied
when the SmartKey is removed. X
To release: pull handle C .
The red I (USA only) or $ (Canada
only) indicator lamp in the instrument cluster
goes out.
The electric parking brake can only be released: R
if the SmartKey is in position G or H in the
ignition lock ( Y
page 132) orR
if the ignition was switched on using the
Start/Stop button
Applying automatically The electric parking brake is automatically
applied when the transmission is in position ]
and: R
the engine is switched off or R
the driver is not wearing a seat belt and the
driver's door is opened
To prevent the electric parking brake from being
automatically applied, pull handle C . The electric parking brake is also engaged auto-
matically if: R
DISTRONIC PLUS brings the vehicle to a
standstill or R
the HOLD function is keeping the vehicle sta-
tionary R
Active Parking Assist is keeping the vehicle
stationary
In addition, at least one of the following condi-
tions must be fulfilled: R
the engine is switched off R
the driver is not wearing a seat belt and the
driver's door is opened R
there is a system malfunction R
the power supply is insufficient R
the vehicle is stationary for a lengthy period
The red $ indicator lamp in the instrument
cluster lights up.
The electric parking brake is not automatically
engaged if the engine is switched off by the ECO
start/stop function.
Releasing automatically Your vehicle's electric parking brake is auto-
matically released if all of the following condi-
tions are met: R
the seat belt has been fastened. R
the engine is running. R
the transmission is in position [ or ^ and
you accelerate.
or
you shift from transmission position ] to
position [ or ^ . You will need to accelerate
more on steeper gradients.
If the transmission is in position ^ the tailgate
must be closed.
If your seat belt is not fastened, the following
conditions must be fulfilled to automatically
release the electric parking brake: R
the driver's door is closed. R
you are shifting out of transmission position
] or you have previously driven faster than
2 mph (3 km/h).
Ensure that you do not depress the accelerator
pedal unintentionally. Otherwise the parking
brake will be released and the vehicle will start
to move.156
Parking
Driving and parking