light MERCEDES-BENZ CLS COUPE 2014 Repair Manual

Useful information
i This Owner's Manual describes all mod-
els, series and optional equipment for your
vehicle that were available at the time of
going to press. National variations are pos- sible. Note that your vehicle may not be
equipped with all of the functions descri-
bed. This is also the case for systems and
functions relevant to safety.
i Read the information on qualified special-
ist workshops: (Y page 26). Exterior lighting
General notes
For reasons of safety, Mercedes-Benz recom- mends that you drive with the lights switched
on even during the daytime. Therefore, your
vehicle is equipped with special daytime driv- ing lamps. In some countries, operation of the
headlamps varies due to legal requirements
and self-imposed obligations. Driving abroad
Symmetrical dipped-beam headlamps If your journey takes you to countries where
vehicles are driven on the opposite side of the
road to the country in which the vehicle is
registered, your headlamps must be switched to symmetrical dipped beam. This prevents
oncoming traffic from being dazzled. Sym-
metrical lights do not illuminate as large an
area of the edge of the carriageway.
Convert the headlamps as close to the border as possible before driving in these countries
(Y page 253).
Asymmetrical dipped-beam headlamps Convert the headlamps back to asymmetrical
dipped beam as soon as possible after cross-
ing the border (Y page 253). If the headlamps are converted to symmetri-
cal dipped beam, the "motorway mode" and
"extended range foglamps" functions (Intelli-
gent Light System) are not available. Setting the exterior lighting
Setting options Exterior lighting can be set by:
R using the light switch
R using the combination switch
(Y page 125)
R using the on-board computer
(Y page 253)
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, control-
led by the light sensor
5 L
Dipped-beam/main-beam head-
lamps
B R
Rear foglamp
If you hear a warning tone when you leave the
vehicle, the lights may still be switched on.
X Turn the light switch to Ã.122
Exterior lightingLights and windscreen wipers

The exterior lighting (except the side lamps/
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 0
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. 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, control-
led by the light sensor
5 L
Dipped-beam/main-beam head-
lamps
B R
Rear foglamp Ã
is the preferred light switch setting. The
light setting is automatically selected accord- ing to the brightness of the ambient light
(exception: poor visibility due to weather con- ditions such as fog, snow or spray):
R Key in position 1in the ignition lock: the
side lamps are switched on or off automat- ically depending on the brightness of the
ambient light.
R With the engine running: if you have
switched on the daytime driving lights func-
tion in the on-board computer, the daytime
driving lights or the side lamps and dipped- beam headlamps are switched on or off
automatically depending on the brightnessof the ambient light.
X To switch on automatic headlamp
mode: turn the light switch to Ã.
The daytime driving lights improve the detect- ability of your vehicle during the day. Here,
the daytime driving lights function must be
switched on via the on-board computer
(Y page 253).
When the side lamps and dipped-beam head- lamps are switched on, the green T(side
lamps) and L(dipped-beam headlamps)
indicator lamps in 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. Exterior lighting
123Lights and windscreen wipers Z

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, control-
led by the light sensor
5 L
Dipped-beam/main-beam head-
lamps
B R
Rear foglamp
When the ignition is switched on and the light
switch is in position L, the side lamps and
dipped-beam headlamps are switched on
even if the light sensor does not sense dark
ambient light conditions. This is advanta-
geous when there is fog or rain.
X To switch on the dipped-beam head-
lamps: turn the key in the ignition lock to
position 2or start the engine.
X Turn the light switch to L.
The green Lindicator lamp in the instru-
ment cluster lights up. Rear foglamp 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, control-
led by the light sensor
5 L
Dipped-beam/main-beam head-
lamps
B R
Rear foglamp
The rear foglamp improves the visibility of
your vehicle in heavy fog for the following
traffic. Please observe the country-specific
laws on the use of rear foglamps.
X To switch on the rear foglamp: turn the
key in the ignition lock to position 2or start
the engine.
X Turn the light switch to LorÃ.
X Press the Rbutton.
The yellow Rindicator lamp in the
instrument cluster lights up.
X To switch off the rear foglamp: press the
R button.
The yellow Rindicator lamp in the
instrument cluster goes out.
Side lamps ! If the battery has been excessively dis-
charged, the side lamps or parking lamps
are automatically switched off to enable
the next engine start. Always park your
vehicle safely and sufficiently lit according
to legal standards. Avoid the continuous
use of the Tside lamps for several 124
Exterior lightingLights and windscreen wipers

hours. If possible, switch on the
Xright
or the Wleft parking lamp. 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, control-
led by the light sensor
5 L
Dipped-beam/main-beam head-
lamps
B R
Rear foglamp
X To switch on: turn the light switch to T.
The green Tindicator lamp in the instru-
ment cluster lights up.
Parking lamps 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, control-
led by the light sensor 5
L
Dipped-beam/main-beam head-
lamps
B R
Rear foglamp
Switching on the parking lamps ensures that
the corresponding side of the vehicle is illu-
minated.
X To switch on the parking lamps: the key
is not in the ignition lock or it is in posi-
tion 0.
X Turn the light switch to W(left-hand side
of the vehicle) or X(right-hand side of
the vehicle). Combination switch
Turn signals :
Main-beam headlamps
; Turn signal, right
= Headlamp flasher
? Turn signal, left
X To indicate briefly: press the combination
switch briefly to the pressure point in the
direction of arrow ;or?.
The corresponding turn signal flashes three
times.
X To indicate: press the combination switch
beyond the pressure point in the direction
of arrow ;or?. Exterior lighting
125Lights and windscreen wipers Z

Main-beam headlamps
:
Main-beam headlamps
; Turn signal, right
= Headlamp flasher
? Turn signal, left
X To switch on the main-beam head-
lamps: turn the key in the ignition lock to
position 2or start the engine.
X Turn the light switch to LorÃ.
X Press the combination switch beyond the
pressure point in the direction of arrow :.
In the Ãposition, the main-beam head-
lamps are only switched on when it is dark
and the engine is running.
The blue Kindicator lamp in the instru-
ment cluster lights up when the main-beam headlamps are switched on.
X To switch off the main-beam head-
lamps: move the combination switch back
to its normal position.
The blue Kindicator lamp in the instru-
ment cluster goes out.
i Vehicles with Adaptive Highbeam Assist:
when Adaptive Highbeam Assist is active, it controls activation of the main-beam head-lamps (Y page 128). Headlamp flasher :
Main-beam headlamps
; Turn signal, right
= Headlamp flasher
? Turn signal, left
X To switch on: turn the key in the ignition
lock to position 1or 2, or start the engine.
X Pull the combination switch in the direction
of arrow =. Hazard warning lamps
X
To switch on the hazard warning lamps:
press button :.
All turn signals flash. If you now switch on a turn signal using the combination switch,
only the turn signal lamp on the corre-
sponding side of the vehicle will flash.
X To switch off the hazard warning lamps:
press button :.126
Exterior lightingLights and windscreen wipers

The hazard warning lamps switch on auto-
matically if:
R an airbag is deployed 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 auto-
matically if the vehicle reaches a speed of
above 10 km/ha gain after a full brake appli-
cation.
i The hazard warning lamps continue to
operate even if the ignition is switched off. Headlamp cleaning system
The headlamps are cleaned automatically if
the "Wipe with washer fluid" function is oper-
ated five times (Y page 133) while the lights
are on and the engine is running. When you
switch off the ignition, the automatic head-
lamp cleaning system is reset and counting is
resumed from 0. Intelligent Light System
General notes The Intelligent Light System is a system that
adjusts the headlamps automatically to suit
the prevailing driving and weather conditions. It offers advanced functions for improved illu-
mination 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 foglamps. The system is only
active when it is dark.
You can activate or deactivate the "Intelligent Light System" using the on-board computer
(Y page 253). Active light function
The active light function is a system that
moves the headlamps according to the steer-
ing movements of the front wheels. In this
way, relevant areas remain illuminated while
driving. This allows you to recognise pedes-
trians, cyclists and animals.
Active: when the lights are switched on.
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 vis-
ibility in tight bends, for example. It can only
be activated when the dipped-beam head-
lamps are switched on.
Active:
R if you are driving at speeds below 40 km/h
and switch on the turn signal or turn the
steering wheel
R if you are driving at speeds between
40 km/ha nd 70 km/h and turn the steer-
ing wheel Exterior lighting
127Lights andwindscreen wipers Z

Not active:
if you are driving at speeds above
70 km/h or switch off the turn signal or turn
the steering wheel to the straight-ahead posi- tion.
The cornering lamp may remain lit for a short
time, but is automatically switched off after
no more than three minutes.
Motorway mode Active:
if you are driving at a speed above
110 km/h and do not make any large steering movements for at least 1,000 mor 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 foglamps The extended range foglamps reduce the
glare experienced by the driver and improve
the illumination of the edge of the carriage-
way.
Active: if you are driving at speeds below
70 km/h and you switch on the rear foglamp. Not active:
if, following activation, you are
driving at speeds above 100 km/h or if you
switch off the rear foglamp. Adaptive Highbeam Assist
General notes You can use this function to set the head-
lamps to change between dipped beam and
main beam automatically. The system recog-
nises vehicles with their lights on, either
approaching from the opposite direction or
travelling in front of your vehicle, and conse-
quently switches the headlamps 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. 128
Exterior lightingLights and windscreen wipers

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
In very rare cases, Adaptive Highbeam Assist
recognises road users too late or not at all. In
this, or in similar situations, the automatic
main-beam headlamps will not be deactivated
or activated regardless. There is a risk of an
accident.
Always carefully observe the traffic conditions and 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 conditions.
In particular, the detection of obstacles can
be restricted if there is:
R poor visibility, e.g. due to fog, heavy rain or
snow
R dirt on the sensors or if the sensors are
obscured
Activating Adaptive Highbeam Assist :
Main-beam headlamps
; Turn signal, right =
Headlamp flasher
? Turn signal, left
X To switch on: turn the light switch to Ã.
X Press the combination switch beyond the
pressure point in the direction of arrow :.
The _ indicator lamp in the multifunc-
tion display lights up when it is dark and the light sensor activates the dipped-beam
headlamps.
If you are driving at speeds above approx-
imately 45 km/h:
The headlamp range is set automatically
depending on the distance between the
vehicle and other road users.
If you are driving at speeds above approx-
imately 55 km/h and no other road users
are detected:
The main-beam headlamps are switched on
automatically. The Kindicator lamp in
the instrument cluster also lights up.
If you are driving at speeds below 45 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 in
the instrument cluster goes out. The _
indicator lamp in 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 in the instrument
cluster 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. Exterior lighting
129Lights and windscreen wipers Z

Interior lighting
Overview of interior lighting
Front overhead control panel
:
u Switches the rear interior lighting
on/off
; | Switches the automatic interior
lighting control on/off
= p Switches the right-hand front read-
ing lamp on/off
? c Switches the front interior lighting
on/off
A p Switches the left-hand front reading
lamp on/off Rear-compartment overhead control panel
: p Switches the right-hand reading
lamp on/off
; p Switches the left-hand 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
lighting may be set using the on-board com-
puter (Y page 253).
Automatic interior lighting control Front overhead control panel
:
u Switches the rear interior lighting
on/off
; | Switches the automatic interior
lighting control on/off
= p Switches the right-hand reading
lamp on/off
? c Switches the front interior lighting
on/off
A p Switches the left-hand reading lamp
on/off
X To switch on/off: press the|button.
When the automatic interior lighting con-
trol is activated, the button is flush with the overhead 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 130
Interior lightingLights and windscreen wipers

The interior lighting is activated for a short
time when the key is removed from the igni-
tion lock. You can activate this delayed
switch-off using the on-board computer
(Y page 254).
Manual interior lighting control Front overhead control panel
:
u Switches the rear interior lighting
on/off
; | Switches the automatic interior
lighting control on/off
= p Switches the right-hand reading
lamp on/off
? c Switches the front interior lighting
on/off
A p Switches the left-hand reading lamp
on/off
X To switch the front interior lighting on/
off: press the cbutton.
X To switch the rear interior lighting on/
off: press the ubutton.
X To switch the reading lamps on/off:
press the pbutton. Crash-responsive emergency lighting
The interior lighting is activated automatically
if the vehicle is involved in an accident.
X To switch off the crash-responsive
emergency lighting: press the hazard
warning lamp button.
or X Lock and then unlock the vehicle using the
key. Replacing bulbs
Important safety notes
G
DANGER
Xenon bulbs are under high voltage. You can
get an electric shock if you remove the cover
of the xenon bulb and touch the electrical
contacts. There is a risk of fatal injury.
Never touch the parts or the electrical con-
tacts of the xenon bulb. Always have work on the xenon bulbs carried out at a qualified spe- cialist workshop.
If your vehicle is equipped with xenon bulbs,
you can recognise this by the following: the
cone of light from the xenon bulbs moves
from the top to the bottom and back again
when you start the engine. For this to be
observed, the lights must be switched on
before the engine is started. 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 before replacing the bulb.
Do not use a bulb that has been dropped or if
its glass tube has been scratched.
The bulb may explode if:
R you touch it
R it is hot Replacing bulbs
131Lights and windscreen wipers Z