warning light MERCEDES-BENZ GLC COUPE 2016 Service Manual

Exterior lighting
General notes
For reasons of safety, Mercedes-Benz recom-
mends that you drive with lights switched on
even during the daytime. In some countries,
operation of the headlamps varies due to legal
requirements and voluntary recommendations. Driving abroad
Vehicles with halogen headlamps It is not necessary to switch your headlamps to
symmetrical dipped beam when driving in coun- tries where vehicles are driven on the opposite
side of the road to the country in which the vehi-
cle is registered. Legal requirements are fulfilled
without switching the headlamps to symmetri-
cal dipped beam.
Vehicles with Intelligent Light System It is necessary to switch your headlamps to sym-
metrical dipped beam before crossing the bor-
der into countries where vehicles are driven on
the opposite side of the road. This prevents
oncoming traffic from being dazzled.
You can switch the headlamps to symmetrical or
asymmetrical dipped beam using the "dipped-
beam headlamps for driving on the right/left"
function via the on-board computer
(Y page 244). This must be switched back to
asymmetrical dipped beam upon your return.
Symmetrical lights do not illuminate as large an
area of the edge of the carriageway. In this case,
"highway mode" and "extended-range fog
lamps" are not available. Setting the exterior lighting
Setting options Exterior lighting can be set using the:
R light switch (Y page 115)
R combination switch (Y page 117)
R headlamp range control for vehicles with hal-
ogen headlamps (Y page 117)
R on-board computer (Y page 243) Light switch Operation
1
W
Left-hand parking lamps
2 X
Right-hand parking lamps
3 T
Side lamps, licence plate and instru-
ment cluster lighting
4 Ã
Automatic headlamp mode, controlled
by the light sensor
5 L
Dipped-beam/main-beam headlamps
B R
Rear fog lamp
If you hear a warning tone when you leave the
vehicle, the lights may still be switched on.
X Turn the light switch to the Ãposition.
The exterior lighting, except the side/parking
lamps, switches off automatically if you: R remove the key from the ignition lock
R open the driver's door with the key in posi-
tion 0in the ignition lock
Automatic headlamp mode G
WARNING
When the light switch is set to Ã, the
dipped-beam headlamps may not be switched on automatically if there is fog, snow or othercauses 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
L.
The automatic headlamp feature is only an aid.
The driver is responsible for the vehicle lighting at all times.
à is the preferred light switch position. Exterior lighting
115Lights and windscreen wipers Z

The light setting is automatically selected
according to the brightness of the ambient light,
but not in the event of poor visibility due to
weather conditions such as fog, snow or spray.
R With the key in position 1in the ignition lock,
the side lamps are switched on or off auto-
matically depending on the brightness of the
ambient light.
R The daytime driving lights or the side lamps
and dipped-beam headlamps are switched on
or off automatically while the engine is run-
ning depending on the ambient light condi-
tions.
X To switch on the automatic headlamps:
turn the light switch to the Ãposition.
The daytime driving lights improve the visibility
of your vehicle during the day.
When the side lamps and dipped-beam head-
lamps are switched on, the green Tside
lamps and Ldipped-beam headlamps indi-
cator lamps on the instrument cluster light up.
Dipped-beam headlamps G
WARNING
When the light switch is set to Ã, the
dipped-beam headlamps may not be switched on automatically if there is fog, snow or othercauses 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
L.
When the ignition is switched on and the light
switch is in the Lposition, the side lamps
and dipped-beam headlamps are switched on
even if the light sensor does not sense dark
ambient light conditions. This is advantageous
when there is fog or rain.
X To switch on the dipped-beam headlamps:
turn the key in the ignition lock to position 2
or start the engine.
X Turn the light switch to the Lposition.
The green Lindicator lamp on the instru-
ment cluster lights up.
Rear fog lamp The rear fog lamp improves the visibility of your
vehicle for the traffic behind in the event of
heavy fog. You must observe the legal require- ments 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 key
in the ignition lock to position 2or start the
engine.
X Turn the light switch to the LorÃ
position.
X Press the Rbutton.
The yellow Rindicator lamp on the instru-
ment cluster lights up.
Side lamps ! When the battery is discharged heavily, the
side lamps or parking lamps are automatically
switched off to facilitate an engine start.
Always park your vehicle safely and in a well lit area, in accordance with the relevant legal
stipulations. Avoid using the Tside lamps
for periods lasting several hours. Where pos-
sible, switch on the right Xor left W
parking lamp.
X To switch on the side lamp: turn the light
switch to the Tposition.
The green Tindicator lamp on the instru-
ment cluster lights up.
Parking lamps Switching on the parking lamps ensures that the
corresponding side of the vehicle is illuminated.
X To switch on the parking lamp: turn the key
to position 0in the ignition lock or remove the
key.
X Turn the light switch to the W(left-hand
side of the vehicle) or X(right-hand side of
the vehicle) position. 116
Exterior lightingLights and windscreen wipers

Adjusting the headlamp range (vehicles
with halogen headlamps) g
Driver's seat and front-passenger seat
occupied
1 Driver's seat, front-passenger seat and rear
seats occupied
2 Driver's seat, front-passenger seat and rear
seats occupied, luggage compartment
laden
3 Driver's and front-passenger seat occupied
and maximum permissible rear axle load uti-
lised, e.g. when towing a trailer
The headlamp range controller allows you to
adjust the cone of light from the headlamps to
suit the vehicle load.
X Start the engine.
X Turn the headlamp range controller to the
position that corresponds to the load in your
vehicle. Combination switch
:
Main-beam headlamps
; Turn signal lamp, right
= Headlamp flasher
? Turn signal lamp, left X
To indicate briefly: push the combination
switch briefly to the pressure point in the
direction of arrow ;or?.
The corresponding turn signal flashes three
times.
X To indicate: push the combination switch
beyond the pressure point in the direction of
arrow ;or?.
X To switch on the main-beam headlamps:
turn the light switch to the LorÃ
position.
X Push the combination switch beyond the
pressure point in the direction of arrow :.
In the Ãposition, the main-beam head-
lamps are switched on only when it is dark and
the engine is running.
The blue Kindicator lamp on the instru-
ment cluster lights up when the main-beam
headlamps are switched on.
X To switch off the main-beam headlamps:
move the combination switch back to its nor- mal position.
The blue Kindicator lamp on the instru-
ment cluster goes out.
Vehicles with Adaptive Highbeam Assist:
If Adaptive Highbeam Assist is activated, it auto- matically controls activation and deactivation of
the main-beam headlamps (Y page 119).
Vehicles with Adaptive Highbeam Assist
Plus:
If Adaptive Highbeam Assist Plus is activated, it
automatically controls activation and deactiva-
tion of the main-beam headlamps (Y page 119).
X Headlamp flasher: pull the combination
switch in the direction of arrow =. Hazard warning lamps Exterior lighting
117Lights and windscreen wipers Z

X
To switch the hazard warning lamps on or
off: press the :button.
All the indicator lamps will flash when the
hazard warning lamps are switched on. If you
now switch on an indicator lamp using the
combination switch, only the indicator lamp
on the corresponding side of the vehicle will
flash.
The hazard warning lamps switch on automati-
cally if:
R an airbag has been triggered or
R the vehicle decelerates rapidly from a speed
of above 70 km/h and comes to a standstill
The hazard warning lamps switch off automati-
cally if the vehicle reaches a speed of above
10 km/h again after a full brake application.
The hazard warning lamps continue to operate
even if the ignition is switched off. Intelligent Light System
General notes The Intelligent Light System is a system that
adjusts the headlamps to suit the prevailing
driving and weather conditions. It offers
advanced functions for improved illumination of the road surface, e.g. depending on the vehicle
speed or weather conditions. The system
includes the active light function, cornering light
function, motorway mode and extended-range
fog lamps. The system is active only when it is
dark.
You can activate/deactivate the Intelligent
Intelligent
Light System Light System function using the on-board
computer (Y page 243).
Active light function The active light function is a system that moves
the headlamps according to the steering move-
ments of the front wheels. In this way, relevant
areas remain illuminated while you are driving.
This allows you to recognise pedestrians,
cyclists and animals sooner.
Active: when the lights are switched on.
Vehicles with Lane Keeping Assist: the active
light function evaluates the course of the lane in which you are driving and adjusts the light in
advance. Cornering light function The cornering light function improves the illu-
mination of the road over a wide angle in the
direction you are turning, enabling better visi-
bility in tight bends, for example. It can be acti-
vated only when the dipped-beam headlamps
are switched on.
Active:
R if you are driving at speeds below 40 km/h
and switch on the turn signal or turn the steer-
ing wheel
R if you are driving at speeds between 40 km/h
and 70 km/h and turn the steering wheel
The cornering light function may remain lit for a short time, but is automatically switched off
after no more than three minutes.
Cornering light function with roundabout
function:
The cornering light function is activated on both
sides before entering a roundabout through an
evaluation of the current GPS position of the
vehicle. It remains active until after the vehicle
has left the roundabout. In this way, pedestrians crossing the road, for example, are illuminated
by your vehicle in good time.
Only vehicles with the COMAND multimedia sys-
tem have this function.
Motorway mode Motorway mode increases the range of the
beam.
Active:if you are driving at a speed above
110 km/h and do not make any large steering
movements for at least 1000 m or if you are
driving at a speed above 130 km/h.
Not active: if you are driving at speeds below
80 km/h following activation.
Extended range fog lamps The extended-range fog lamps reduce the glare
experienced by the driver and improve the illu-
mination of the edge of the carriageway.
Active: if you are driving at speeds below
70 km/h and you switch on the rear fog lamp.
Not active: if, following activation, you are driv-
ing at speeds above 100 km/h or if you switch
off the rear fog lamp. 118
Exterior lightingLights and
windscreen wipers

Adaptive Highbeam Assist
General notes You can use this function to set the headlamps
to switch automatically between dipped beam
and main beam. The system recognises vehicles
with their lights on, either approaching from the opposite direction or travelling in front of your
vehicle, and consequently switches the head-
lamps from main beam to dipped beam.
The system automatically adapts the dipped-
beam headlamp range depending on the dis-
tance to the other vehicle. Once the system no
longer detects any other vehicles, it switches on
the main-beam headlamps again.
The system's optical sensor is located behind
the windscreen near the overhead control
panel.
Important safety notes G
WARNING
Adaptive Highbeam Assist does not recognise 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 recognise other road users
that have lights, or may recognise them too
late. In this, or in similar situations, the auto-
matic main-beam headlamps will not be deac-
tivated or will be activated despite the pres-
ence of other road users. There is a risk of an accident.
Always carefully observe the traffic conditionsand switch off the main-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 in the case of:
R poor visibility, e.g. due to fog, heavy rain or
snow
R dirt on the sensors or obscured sensors
Switching Adaptive Highbeam Assist
on/off X
To switch on: turn the light switch to the
à position.
X Press the combination switch forwards
beyond the pressure point (Y page 117).
The indicator lamp _on the multifunction
display lights up when it is dark and the light
sensor switches on the dipped-beam head-
lamps.
If you are driving at speeds above approx-
imately 25 km/h:
The headlamp range is set automatically
depending on the distance between the vehi- cle and other road users.
If you are driving at speeds above approx-
imately 30 km/h and no other road users are
detected:
The main-beam headlamps are switched on
automatically. The Kindicator lamp on the
instrument cluster also lights up.
If you are driving at speeds below 25 km/h or
other road users are detected or the roads are adequately lit:
the main-beam headlamps are switched off
automatically The Kindicator lamp on the
instrument cluster goes out. The _indi-
cator lamp on the multifunction display
remains lit.
X To switch off: move the combination switch
back to its normal position or move the light
switch to another position.
The K indicator lamp on the instrument
cluster goes out. Adaptive Highbeam Assist Plus
General notes With Adaptive Highbeam Assist Plus, you can
automatically switch between dipped-beam,
partial main-beam and main-beam headlamps.
Partial main-beam illumination is a form of illu-
mination whereby the main beam is directed Exterior lighting
119Lights and windscreen wipers Z

past other road users. Other road users are kept
out of the main beam. This prevents glare. If
there is a vehicle in front, for example, the main- beam headlamps illuminate the areas to its right
and left, and the vehicle in front is illuminated by the dipped-beam headlamps.
The system automatically adapts the dipped-
beam headlamp range depending on the dis-
tance to the other vehicle. Once the system no
longer detects any other vehicles, it switches on
the main-beam headlamps again.
If the main-beam or partial main-beam head-
lamps are causing too much reflection from traf- fic signs, the lights are automatically dimmed
and glare for the driver caused by the reflectionsis thus avoided.
The system's optical sensor is located behind
the windscreen near the overhead control
panel.
Important safety notes G
WARNING
Adaptive Highbeam Assist Plus does not rec-
ognise 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
In very rare cases, Adaptive Highbeam Assist
Plus may not recognise road users who do
have lights, or may recognise them too late. In this, or in similar situations, the automatic
main-beam headlamps will not be deactivated
or will be activated despite the presence of
other road users. There is a risk of an acci-
dent.
Always carefully observe the traffic conditions and switch off the main-beam headlamps in
good time.
Adaptive Highbeam Assist Plus cannot take into
account road, weather or traffic conditions.
Adaptive Highbeam Assist Plus is only an aid.
You are responsible for adjusting the vehicle's
lighting to the prevailing light, visibility and traf-
fic conditions. In particular, the detection of obstacles can be
impaired in the case of:
R poor visibility, e.g. due to fog, heavy rain or
snow
R dirt on the sensors or obscured sensors
Switching Adaptive Highbeam Assist
Plus on/off X
To switch on: turn the light switch to the
à position.
X Press the combination switch forwards
beyond the pressure point (Y page 117).
The _ indicator lamp on the multifunction
display lights up when it is dark and the light
sensor switches on the dipped-beam head-
lamps.
At speeds above approx. 25 km/ h:the head-
lamp range is automatically controlled
according to the distance to other road users.
At speeds above approximately 30 km/h:
R if no other road users are detected, the
main-beam headlamps are automatically
switched on
R if other road users are detected, the partial
main-beam headlamps are automatically
switched on
The K indicator lamp on the instrument
cluster also lights up.
At speeds below approx. 25 km/h or when
there is sufficient street lighting:
R the partial main-beam headlamps are
switched off automatically
R the main-beam headlamps are switched off
automatically
The K indicator lamp on the instrument
cluster goes out. The _indicator lamp on
the multifunction display remains lit.
X To switch off:move the combination switch
back to its normal position or move the light
switch to another position.
The _ indicator lamp on the multifunction
display goes out. Headlamps misted up on the inside
Certain climatic and physical conditions may
cause moisture to form in the headlamp. This
moisture does not affect the functionality of the headlamp. 120
Exterior lightingLights and
windscreen wipers

Interior lighting
Overview of interior lighting
Front overhead control panel :
p Left-hand front reading lamp
; | Automatic interior lighting control
= c Front interior lighting
? u Rear interior lighting
A p Right-hand front reading lamp
Control panel in the grab handle (rear
compartment) :
Reading lamp
; p Switches the reading lamp on/off Interior lighting control
General notes In order to prevent the vehicle's battery from
discharging, the interior lighting functions are
automatically deactivated after some time
except for when the key is in position 2in the
ignition lock. The colour and brightness of the ambient light-
ing are set using the multimedia system (see
Digital Owner's Manual).
Automatic interior lighting control X
To switch on or off: press the|button.
When the automatic interior lighting control is
switched on, the button is flush with the over- head control panel.
The interior lighting automatically switches on if
you:
R unlock the vehicle
R open a door
R remove the key from the ignition lock
The interior lighting is activated for a short time
when the key is removed from the ignition lock. This delayed switch-off can be adjusted via the
multimedia system (see Digital Owner's Man-
ual). Replacing bulbs
Important safety notes
G
WARNING
Bulbs, lamps and plug connectors can
become very hot during use. When replacing a bulb, you could burn yourself on these com-
ponents. There is a risk of injury.
Allow these components to cool down beforereplacing the bulb.
Do not use a bulb if it has been dropped or if its
glass tube has been scratched.
The bulb may explode if:
R you touch it
R it is hot
R you drop it
R you scratch it
Use bulbs only in closed lamps that have been
designed for this purpose. Fit only spare bulbs of the same type and the specified voltage.
Marks on the glass tube reduce the service life
of the bulbs. Do not touch the glass tube with
your bare hands. If necessary, clean the glass
tube when cold with alcohol or spirit and rub it
off with a lint-free cloth. Replacing bulbs
121Lights and windscreen wipers Z

For this reason, you should always switch off
the windscreen wipers in dry weather. 1
$ Windscreen wipers off
2 Ä Intermittent wiping, normal
3 Å Intermittent wiping, frequent
4 ° Continuous wipe, slow
5 ¯ Continuous wipe, fast
B í Single wipe
î Wipe with washer fluid
X Turn the key to position 1or 2in the ignition
lock (Y page 144).
X Turn the combination switch to the corre-
sponding position.
Vehicles with a rain sensor: in theÅor
Ä position, the appropriate wiping frequency
is automatically set according to the intensity of
the rain. In the Åposition, the rain sensor is
more sensitive than in the Äposition, caus-
ing the windscreen wiper to wipe more fre-
quently.
If the wiper blades are worn, the windscreen will no longer be wiped properly. This could mean
you are unable to observe the traffic conditions. Replacing the wiper blades
Important safety notes G
WARNING
If the windscreen wipers begin to move while
you are changing the wiper blades, you can be trapped by the wiper arm. There is a risk of
injury.
Always switch off the windscreen wipers and
ignition before changing the wiper blades. !
Never open the bonnet if a windscreen
wiper arm has been folded away from the
windscreen.
Never fold a windscreen wiper arm without a
wiper blade back onto the windscreen.
Hold the windscreen wiper arm firmly when
you change the wiper blade. If you release the
windscreen wiper arm without a wiper blade
and it falls onto the windscreen, the wind-
screen may be damaged by the force of the
impact.
Mercedes-Benz recommends that you have
the wiper blades changed at a qualified spe-
cialist workshop.
! To avoid damaging the windscreen wiper
blades, make sure that you touch only the
wiper arm of the windscreen wiper.
Replacing the windscreen wiper blades Moving the wiper blades to the vertical
position
On vehicles without KEYLESS-GO or KEY-
LESS‑GO start function:
X Turn the key to position 1or 2in the ignition
lock (Y page 144).
X Set the windscreen wipers to the °posi-
tion on the combination switch.
X When the wiper arms have reached the verti-
cal position, turn the key to position 0in the
ignition lock and remove it.
X Fold the wiper arm away from the windscreen.
On vehicles with KEYLESS-GO or KEY-
LESS‑GO start function:
X Switch off the engine.
X Remove your foot from the brake pedal.
X Set the windscreen wipers to the °posi-
tion on the combination switch.
X Press the Start/Stop button repeatedly until
the windscreen wipers start.
X When the wiper arms have reached the verti-
cal position, press the Start/Stop button.
X Fold the wiper arm away from the windscreen. 124
Windscreen wipersLights and windscreen wipers

Activating/deactivating air-recircula-
tion mode
General notes You can also temporarily deactivate the flow of
fresh air manually if unpleasant odours are
entering the vehicle from outside. The air
already inside the vehicle will then be recircula-
ted.
If you activate air-recirculation mode, the win-
dows can mist up more quickly, particularly at
low outside temperatures. Use air-recirculation
mode only briefly to prevent the windows from
misting up.
Activating/deactivating X
Turn the key to position 2in the ignition lock
(Y page 144).
X To activate: press thegrocker switch up
or down.
The indicator lamp above the grocker
switch lights up.
Air-recirculation mode is activated automati-
cally:
R at high outside temperatures
R at high levels of pollution (THERMOTRONIC
automatic climate control only)
R in tunnels (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
approximately 30 minutes.
X To deactivate: press thegrocker switch
up or down.
The indicator lamp above the grocker
switch goes out.
Air-recirculation mode is deactivated automati-
cally:
R after approximately five minutes at outside
temperatures below approximately 5 †
R after approximately five minutes if "Cooling
with air dehumidification" is deactivated
R after approximately 30 minutes at outside
temperatures above approximately 5 †if the
"Cooling with air dehumidification" function is
activated Convenience opening or closing using
the air-recirculation button G
WARNING
When the convenience closing feature is oper- ating, parts of the body could become trapped
in the closing area of the side window and the
sliding sunroof. There is a risk of injury.
Observe the complete closing procedure
when the convenience closing feature is oper-
ating. When closing make sure that no parts of the body are in the closing area. G
WARNING
During convenience opening parts of the body could be drawn in or become trapped
between the side window and window frame.
There is a risk of injury.
When opening, make sure that nobody is
touching the side window. If someone
becomes trapped, immediately press
the W switch in the door to stop the move-
ment of the side windows. To continue closing
the side window, pull on the Wswitch.
X Convenience closing feature: press and
hold the grocker switch up or down until
the side windows start to close automatically. Vehicles with sliding sunroof: the sliding
sunroof closes simultaneously.
The indicator lamp above the grocker
switch lights up. Air-recirculation mode is
activated.
If you open the side windows or the sliding
sunroof manually after closing with the con-
venience closing feature, they will remain in
this position when opened using the conve-
nience opening feature.
If parts of the body are in the closing area during convenience closing, proceed as follows:
X Press the Wbutton to stop the side win-
dows.
The side windows stop.
X To then open the side windows, press the
W button again. 134
Operating the climate control systemClimate control

X
Only vehicles with sliding sunroof: press
the 3 switch to stop the sliding sunroof.
The sliding sunroof stops.
X Then, to open the sliding sunroof, pull back on
the 3 switch.
Notes on the automatic reversing feature for:
R the side windows (Y page 95)
R the sliding sunroof (Y page 99)
X Convenience opening feature: press and
hold the grocker switch up or down until
the side windows or the sliding sunroof start
to open automatically.
The indicator lamp above the grocker
switch goes out. Air-recirculation mode is
deactivated. Switching the residual heat on/off
General notes The residual heat function is available only with
THERMOTRONIC automatic climate control andTHERMATIC automatic climate control with aux-
iliary heating.
When 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 set interior temperature.
Activating/deactivating X
Turn the key to position 0in the ignition lock
or remove it (Y page 144).
X To switch on: 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 switch on the residual heat function at
high temperatures, only the ventilation will be
activated. The blower runs at medium speed. X
To switch off: press the!rocker switch
up or down.
The indicator lamp above the !rocker
switch goes out.
Residual heat is switched off automatically:
R after approximately 30 minutes
R when the ignition is switched on
R if the battery voltage drops
R when the auxiliary heating is switched on perfume atomiser
Operating the perfume atomiser G
WARNING
If children open the vial, they could drink the
perfume or it could come into contact with
their eyes. There is a risk of injury. Do not
leave children unsupervised in the vehicle.
If the perfume liquid has been drunk, consult
a doctor. If perfume comes into contact with
your eyes or skin, rinse the eyes with clean
water. If you continue to experience difficul-
ties, consult a doctor. H
Environmental note Full vials must not be dis-
posed of with household
waste. They must be collec-
ted separately and disposed
of in an environmentally
responsible recycling sys-
tem.
Dispose of full vials in an
environmentally responsible
manner and take them to a
harmful substance collec-
tion point.Operating the climate control system
135Climate control Z