lights MERCEDES-BENZ GLC 2017 Owner's Manual

SmartKey battery
Important safety notes
G WARNING
Batteries contain toxic and corrosive substan-
ces. If batteries are swallowed, it can result in
severe health problems. There is a risk of fatal
injury.
Keep batteries out of the reach of children. If
a battery is swallowed, seek medical attention
immediately.
H Environmental note
Batteries contain dangerous
substances. It is against the
law to dispose of them with
the household rubbish. They
must be collected separately
and recycled to protect the
environment.
Dispose of batteries in an
environmentally friendly
manner. Take discharged
batteries to a qualified spe-
cialist workshop or a special
collection point for used bat-
teries.
The SmartKey batteries contain perchlorate
material, which may require special handling
and regard for the environment. National guide-
lines must be observed during disposal. In Cal-
ifornia, see www.dtsc.ca.gov/
HazardousWaste/Perchlorate/index.cfm .
Mercedes-Benz recommends that you have the
batteries replaced at a qualified specialist work-
shop. Checking the battery X
Press the 7 or 6 button.
The battery is working properly if battery
check lamp C lights up briefly.
The battery is discharged if battery check
lamp C does not light up briefly. X
Change the battery ( Y
page 80).
If the SmartKey battery is checked within the
signal reception range of the vehicle, pressing
the 7 or 6 button: R
locks or R
unlocks the vehicle
i You can get a battery at any qualified spe-
cialist workshop.
Replacing the battery You require a CR 2025 3 V cell battery. X
Take the mechanical key out of the SmartKey
( Y
page 79).
X
Press mechanical key D into the SmartKey
opening in the direction of the arrow until bat-
tery compartment cover C opens. Do not
hold battery compartment cover C closed
while doing so. X
Remove battery compartment cover C .80
SmartKey
Opening and closing

Exterior lighting
General notes USA only: if you wish to drive during the daytime
without lights, switch off the Daytime Run‐
ning Lights function via the on-board com-
puter ( Y
page 223).
Setting the exterior lighting
Setting options Exterior lighting can be set using the: R
light switch ( Y
page 111)R
combination switch ( Y
page 112)R
on-board computer ( Y
page 223)
Light switch Operation
G c
Left-hand standing lampsH d
Right-hand standing lampsI `
Parking lamps, license plate and
instrument cluster lightingJ X
Automatic headlamp mode, controlled
by the light sensor
K X
Low-beam/high-beam headlamps

When the engine is running and the vehicle is
stationary: if you move the selector lever from a
driving position to P , the daytime running lamps
and low-beam headlamps go out after three
minutes.
When the engine is running, the vehicle is sta-
tionary and in bright ambient light: if you turn the
light switch to the ` position, the daytime
running lamps and parking lamps switch on.
If the engine is running and you turn the light
switch to the X position, the manual settings
take precedence over the daytime running
lamps.
Low-beam headlamps
G WARNING
When the light switch is set to X , the low-
beam headlamps may not be switched on
automatically if there is fog, snow or other
causes of poor visibility due to the weather
conditions such as spray. There is a risk of an
accident.
In such situations, turn the light switch to
X .
Even if the light sensor does not detect that it is
dark, the parking lamps and low-beam head-
lamps switch on when the ignition is switched on
and the light switch is set to the X position.
This is a particularly useful function in the event
of rain and fog. X
To switch on the low-beam headlamps:
turn the SmartKey to position H in the igni-
tion lock or start the engine. X
Turn the light switch to the X position.
The green X indicator lamp in the instru-
ment cluster lights up.
Rear fog lamp
The rear fog lamp improves visibility of your
vehicle for the traffic behind in the event of thick
fog. You must observe the legal requirements
for the country in which you are currently driving
when operating the rear fog lamp. X
To switch on the rear fog lamp: turn the
SmartKey in the ignition lock to position H or
start the engine. X
Turn the light switch to the X or X
position. X
Press the ^ button.
The yellow ^ indicator lamp on the instru-
ment cluster lights up.
Parking lamps
! If the battery charge is very low, the parking
lamps or standing lamps are automatically
switched off to enable the next engine start.
Always park your vehicle safely and in a well lit
area, in accordance with the relevant legal
stipulations. Avoid using the ` parking
lamps over a period of several hours. If pos-
sible, switch on the right-hand d or left-
hand c standing lamps. X
To switch on the parking lamps: turn the
light switch to the ` position.
The green ` indicator lamp on the instru-
ment cluster lights up.
Standing lamps Switching on the standing lamps ensures the
corresponding side of the vehicle is illuminated. X
To switch on the standing lamps: turn the
SmartKey t o position

The system automatically adapts the low-beam
headlamp range depending on the distance to
the other vehicle. Once the system no longer
detects any other vehicles, it reactivates the
high-beam headlamps.
The system's optical sensor is located behind
the windshield near the overhead control panel.
Important safety notes
G WARNING
Adaptive Highbeam Assist does not recognize
road users: R
who have no lights, e.g. pedestrians R
who have poor lighting, e.g. cyclists R
whose lighting is blocked, e.g. by a barrier
On very rare occasions, Adaptive Highbeam
Assist may fail to recognize other road users
that have lights, or may recognize them too
late. In this, or in similar situations, the auto-
matic high-beam headlamps will not be deac-
tivated or will be activated regardless. There is
a risk of an accident.
Always carefully observe the traffic conditions
and switch off the high-beam headlamps in
good time.
Adaptive Highbeam Assist cannot take into
account road, weather or traffic conditions.
Adaptive Highbeam Assist is only an aid. You are
responsible for adjusting the vehicle's lighting
to the prevailing light, visibility and traffic con-
ditions.
In particular, the detection of obstacles can be
impaired if: R
there is poor visibility, e.g. due to fog, heavy
rain or snow R
there is dirt on the sensors or anything else
covering the sensors
Switching Adaptive Highbeam Assist
on/off X
To switch on: turn the light switch to the
X position.X
Press the combination switch forwards
beyond the pressure point ( Y
page 112).
The

Protect bulbs from moisture during operation.
Do not allow bulbs to come into contact with
liquids.
Replace only the bulbs listed ( Y
page 116).
Have the bulbs that you cannot change yourself
replaced at a qualified specialist workshop.
If you require assistance replacing bulbs, con-
sult a qualified specialist workshop.
If the new bulb still does not light up, consult a
qualified specialist workshop.
Headlamps and lights are an important aspect of
vehicle safety. You must therefore make sure
that these function correctly at all times. Have
the headlamp setting checked regularly.
Vehicles with LED headlamps: the front and
rear light clusters of your vehicle are equipped
with LED bulbs. Do not replace the bulbs your-
self. Contact a qualified specialist workshop
which has the necessary specialist knowledge
and tools to carry out the work required.
Overview of bulb types You can replace the following bulbs. The bulb
type can be found in the legend.
Halogen headlampsC
Low-beam headlamp: H7 55 W
D
High-beam headlamp: H7 55 W

High-beam headlamps X
Switch off the lights. X
Open the hood. X
Turn housing cover C counter-clockwise and
remove it. X
Push bulb holder D upwards and pull out.X
Pull defective bulb out of bulb holder D .X
Insert new bulb into bulb holder D .X
Insert bulb holder D into groove with lug at
top. X
Push bulb holder D down until it engages
audibly. X
Press on housing cover C and turn it clock-
wise.
Turn signals
X
Remove the cover in the front wheel housing
( Y
page 117). X
Turn bulb holder C counter-clockwise using
the grip under the headlamp casing and
remove it downwards with bulb. X
Turn defective bulb counter-clockwise and
remove it from bulb holder C .X
Insert new bulb into bulb holder C . X
Insert bulb holder C , turn it clockwise and
lock. X
Replace the cover in the front wheel housing
( Y
page 117).
Removing and installing the cover in the
front wheel housing You must remove the cover of the front wheel
housing before you can change the front turn
signal lamp.
X
To remove: switch off the lights. X
Turn the front wheels inwards. X
Turn rotary knob C 180° outwards until it
stops using a suitable object.
Cover D is released. X
Fold cover D up. X
To install: insert cover D into the left, right
and two lower catches. X
Turn rotary knob C 180° inwards until it
stops using a suitable object.
Cover D is locked.Replacing bulbs 117
Lights and windshield wipers Z

Replacing rear bulbs (vehicles with
halogen headlamps)
Opening and closing the side trim pan-
els
Example: right-hand side paneling
You must open the side trim panel in the cargo
compartment before you can replace the bulbs
in the tail lamps. X
To open: release right or left side trim
panel C at the top and fold it down in the
direction of the arrow. X
To close: insert side trim panel C .
Rear lamp cluster
Changing the backup lamp Due to their location, have the bulbs in the
backup lamp in the tailgate replaced at a quali-
fied specialist workshop. X
Switch off the lights. X
Open the tailgate.
Example: right-hand side handle X
In recess

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

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