bulb MERCEDES-BENZ C-CLASS COUPE 2011 User Guide

X
Drive with the headlamps switched on.
The level of moisture diminishes, depend-
ing on the length of the journey and the
weather conditions (humidity and temper-
ature).
If the level of moisture does not diminish:
X Have the headlamps checked at a qualified
specialis tworkshop. Interior lighting
Overview of interior lighting
:
u To switch the rear interior lighting
on/off
; | To switch the automatic interior
lighting control on/off
= p To switch the right-hand front read-
ing lamp on/off
? c To switch the front interior lighting
on/off
A p To switch the left-hand front reading
lamp on/off Interior lighting control
Important 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. Automatic interior lighting control 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
The interior light is activated for a short while
when the key is removed from the ignition
lock. You can activate this delayed switch-off
using the on-board computer (Y page 225).
Manual interior lighting control X
To switch the interior lighting on/off:
press the cbutton.
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. Changing bulbs
Important safety notes
Xenon bulbs 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 be114
Changing bulbsLights and windscreen wipers

observed, the lights must be switched on
before starting the engine. G
DANGER
Xenon bulbs carry a high voltage. You could
get an electric shock and be seriously or even
fatally injured if you touch the electric con-
tacts on xenon bulbs. Therefore, never
remove the cover from xenon bulbs.
Do not change xenon bulbs yourself, but have
them replaced at a qualified specialist work-
shop which has the necessary specialist
knowledge and tools to carry out the work
required.
Mercedes-Benz recommends that you use a
Mercedes-Benz Service Centre for this pur-
pose. In particular, work relevant to safety or
on safety-related systems must be carried out
at a qualified specialist workshop.
Bulbs and lamps 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.
Other bulbs There are bulbs other than the xenon bulbs
that you cannot replace. Replace only the
bulbs listed (Y page 115). Have the bulbs that
you cannot replace yourself changed at a
qualified specialist workshop.
Mercedes-Benz recommends that you use a
Mercedes-Benz Service Centre for this pur-
pose. In particular, work relevant to safety or
on safety-related systems must be carried out
at a qualified specialist workshop.
If you require assistance changing bulbs, con-
sult a qualified specialist workshop.
Do not touch the glass tube of new bulbs with
your bare hands. Even minor contamination
can burn into the glass surface and reduce
the service life of the bulbs. Always use a lint-
free cloth or only touch the base of the bulb
when fitting.
Only use bulbs of the correc ttype. If the new bulb still does no
tlight up, consult
a qualified specialist workshop.
Bulbs and lamps are an importan taspect of
vehicle safety. You must therefore make sure
that these function correctly at all times.
Have the headlamp setting checked regularly. G
WARNING
Bulbs and lights can become very hot. For this
reason, allow them to cool down before
changing them. Otherwise, you could burn
yourselfw hen you touch them.
Keep bulbs out of the reach of children. Oth-
erwise, they could damage them, for example,
and injure themselves.
Never use a bulb which has been dropped.
Such a bulb may explode and injure you.
Halogen bulbs are pressurised and could
explode when you change them, especially if
they are very hot. You should therefore wear
eye protection and gloves when you are
changing them. Overview of bulb replacement
–bulbs
You can change the following bulbs. The bulb
type can be found in the legend. Halogen headlamps
:
Side lamp/parking lamp: W5W
; Main-beam headlamp: H7 55 W
= Dipped-beam headlamp: H7 55 W Changing bulbs
115Lights and windscreen wipers Z

Bi-xeno
nheadlamps
: Cornering lamp: H7 55 W Tail lamps
:
Reversing lamp: P 21 W
; Brake lamp: P 21 W
= Brake lamp/tail lamp: P 21 W Changing the front bulbs
Dipped-beam headlamps (halogen
headlamps) X
Switch off the lights.
X Open the bonnet. X
Turn housing cover :anti-clockwise and
pull it out.
X Turn bulb holder ;anti-clockwise and pull
it out.
X Take the bulb out of bulb holder ;.
X Inser tthe new bulb into bulb holder ;.
X Insert bulb holder ;into the lamp and turn
it clockwise.
X Align housing cover :and turn it clock-
wise until it engages.
Main-beam headlamps (halogen head-
lamps) X
Switch off the lights.
X Open the bonnet.
X Turn housing cover :anti-clockwise and
pull it out.
X Turn bulb holder ;anti-clockwise and pull
it out.
X Take the bulb out of bulb holder ;.
X Insert the new bulb into bulb holder ;.
X Insert bulb holder ;into the lamp and turn
it clockwise.
X Align housing cover :and turn it clock-
wise until it engages. 116
Changing bulbsLights and windscreen wipers

Side lamps/parking lamps(
halogen
headlamps) X
Switch off the lights.
X Open the bonnet.
X Turn housing cover :anti-clockwise and
pull it out.
X Pull out bulb holder ;.
X Take the bulb out of bulb holder ;.
X Insert the new bulb into bulb holder ;.
X Insert bulb holder ;.
X Align housing cover :and turn it clock-
wise until it engages.
Cornering light function (Intelligent
Light System) X
Switch off the lights.
X Open the bonnet.
X Turn housing cover :anti-clockwise and
pull it out.
X Turn bulb holder ;anti-clockwise and pull
it out. X
Take the bulb out of bulb holder ;.
X Insert the new bulb into bulb holder ;.
X Insert bulb holder ;into the lamp and turn
it clockwise.
X Align housing cover :and turn it clock-
wise until it engages. Changing the rear bulbs
Opening and closing the side trim pan-
els You must open the side trim panel in the boot
and remove the first-ai
dkit before you can
change the bulbs in the tail lamps. Example: right-hand side trim panel
X
To open: loosen side trim panel :at the
top and fold it down in the direction of the
arrow.
X To close: insert side panel :. Left-hand side trim panel (vehicles with a sound
system or trailer coupling) Changing bulbs
117Lights and windscreen wipers Z

X
To open: turn rotary catch :90° in the
direction of the arrow and remove side trim
panel ;.
X To close: insert side trim panel ;and turn
release knob :90° in the opposite direc-
tion to the arrow.
Tail lamps X
Switch off the lights.
X Ope nthe boot.
X Open the side trim panel (Y page 117).X
Remove the tail lamp connector
X Simultaneously press retaining lugs :in
the direction of the arrow and slightly pull
out the bulb holder with the bulbs.
X Remove the connector for LED light func-
tions from the top of the bulb holder.
X Pull the bulb holder out with the bulbs. :
reversing lamp
; brake lamp
= Side lamp/brake lamp X
Press the respective bulb :,;or= back
and turn it anti-clockwise to remove it from
the bulb holder.
X Insert the new bulb into the bulb holder and
turn it clockwise.
X Reinsert the connector for LED light func-
tions in the bulb holder.
X Insert the bulb holder again and lock it in
place.
X Insert the tail lamp connector.
X Close the side trim panel (Y page 117). Windscreen wipers
Switching the windscreen wipers on/
off
G
WARNING
The windscreen will not longer be wiped prop-
erly if the wiper blades are worn. This could
prevent you from observing the traffic condi-
tions, thereby causing an accident. Replace
the wiper blades twice a year, ideally in spring
and autumn.
! Do not operate the windscreen wipers
when the windscreen is dry, as this could
damage the wiper blades. Moreover, dust
that has collected on the windscreen can
scratch the glass if wiping takes place when
the windscreen is dry.
! If the windscreen wipers leave smears on
the windscreen after the vehicle has been
washed in an automatic car wash, this may
be due to wax or other residue. Cleant he
windscreen with washer fluid after an auto-
matic car wash. 118
Windscreen wipersLights and windscreen wipers

X
Place the protective cap on the ball cou-
pling.
The release wheel is located behind the left-
hand side trim panel in the boot. Coupé
X
To open the cover: turn handle:anti-
clockwise and fold down cover ;.X
Pull out release wheel =.
X Turn release wheel =anti-clockwise.
The ball coupling unlocks and lowers. Indi-
cator lamp ?flashes. X
Press the ball coupling in the direction of
the arrow until it engages behind the
bumper.
Indicator lamp ?goes out and the mes-
sage in the multifunction display disap-
pears. Trailer power supply
When it leaves the factory, your vehicle's
trailer socket is equipped with a permanent
power supply and a power supply that is
switched on via the ignition lock.
The permanen tpower supply is supplied via
trailer socket pin 9.
The power supply that is switched on via the
ignition lock is supplied via trailer socket pin
10.
! You can connect consumers with a power
rating of up to 240 W to the permanent
power supply and up to 180 W to the power
supply that is switched on via the ignition
lock.
You must not charge a trailer battery using
the power supply.
The trailer's permanent power supply is
switched off in the event of low vehicle supply
voltage and after six hours at the latest.
You can obtain further information about
installing the trailer electrics from a qualified
specialist workshop, e.g. aMercedes-Benz
Service Centre.
X To switch the connected power supply
on or off: turn the key in the ignition lock
to position 2or 0respectively. Bulb failure indicator for LED lamps
i If LED lamps are fitted in the trailer, an
error message may appear in the multi-
function display even if there is no fault. The
reason for the error message may be that
the curren thas falle nbelow the minimum
of 50 milliamperes (mA). Trailer towing
203Driving and parking Z

To ensure reliable operation of the bulb failure
indicator, each LED chain in the trailer lighting
must be guaranteed a minimum current of
50 mA. Trailer with 7-pin connector
General information If your trailer has a 7-pin connector, you can
connect it to the 13-pin socket on the ball
coupling using an adapter or, if necessary, an
adapter cable. Both of these can be obtained
at a qualified specialist workshop, e.g. at a
Mercedes-Benz Service Centre.
Fitting the adapter X
Open the socket cover.
X Insert the connector with lug :into
groove ;on the socket and turn the con-
nector clockwise to the stop.
X Let the cover engage.
X If you are using an adapter cable, secure
the cable to the trailer with cable ties.
! Make sure that there is sufficient cable
play so that the cable cannot become
detached when cornering. 204
Trailer towingDriving and parking

Display messages Possible causes/consequences and
M Solutions
6
Rear left malfunc‐
tion Consult work‐
shop or
Rear right malfunction Con‐
sult workshop G
Risk of injury
SRS has malfunctioned at the rear on the left or right. The 6
warning lamp also lights up in the instrumen tcluster.
X Visit a qualified specialist workshop. 6
Left
windowbag mal‐
function Consult
workshop or
Right windowbag malfunc‐
tion Consult work‐
shop G
Risk of injury
There is a malfunction in the left-hand and/or right-hand window-
bag. The 6warning lamp also lights up in the instrumen tclus-
ter.
X Visit a qualified specialist workshop. Lights (4-button multifunction steering wheel)
i Display messages about LEDs:
This display message will only appear if all LEDs have failed. Displa
ymessages Possible causes/consequences and
M Solutions
b
Left corner. light
or
Right corner. light The left or right-hand cornering light is faulty.
X
Chec kwhether you are permitted to change the bulb yourself
(Y page 114).
or
X Visit a qualified specialist workshop. b
Left dipped beam
or
Right dipped-beam The left or right-hand dipped-beamh
eadlamp is faulty.
X Check whether you are permitted to change the bulb yourself
(Y page 114).
or
X Visit a qualified specialist workshop. b
Trailer left tail
lamp or
Trailer right tail lamp The left or right-hand trailer tail lamp is faulty.
X
Check whether you are permitted to change the bulb yourself.
or
X Visit a qualified specialist workshop. 244
Display messagesOn-board computer and displays

Display messages Possible causes/consequences and
M Solutions
b
Trailer
left indic.
or
Trailer right indic. The lef
torright-hand trailer tur nsignal lamp is faulty.
X Check whether you are permitted to change the bulb yourself.
or
X Visit a qualified specialist workshop. b
Trailer brake lamp The trailer brake lamp is faulty.
X
Check whether you are permitted to change the bulb yourself.
or
X Visit a qualified specialist workshop. b
Rear
left indicator
or
Rear right indi‐ cator The rear left-hand or rear right-hand tur
nsignal is faulty.
X Check whether you are permitted to change the bulb yourself
(Y page 114).
or
X Visit a qualified specialist workshop. b
Front left indica‐
tor or
Front right indicator The front left-hand or front right-hand turn signal is faulty.
X
Check whether you are permitted to change the bulb yourself
(Y page 114).
or
X Visit a qualified specialist workshop. b
Left
mirror indica‐
tor or
Right mir‐ ror indicator The turn signal in the left-hand or right-hand exterior mirror is
faulty.
X Check whether you are permitted to change the bulb yourself
(Y page 114).
or
X Visit a qualified specialist workshop. b
Third brake lamp The third brake lamp is faulty.
X
Check whether you are permitted to change the bulb yourself
(Y page 114).
or
X Visit a qualified specialist workshop. b
Tail/brake lamp,
left or
Tail/brake lamp, right The left or right-hand tail lamp/brake lamp is faulty.
X
Check whether you are permitted to change the bulb yourself
(Y page 114).
or
X Visit a qualified specialist workshop. Display messages
245On-board computer and displays Z

Display messages Possible causes/consequences and
M Solutions
b
Left main beam
or
Right main beam The lef
torright-hand high beam is faulty.
X Check whether you are permitted to change the bulb yourself
(Y page 114).
or
X Visit a qualified specialist workshop. b
Left fog lamp
or
Right fog lamp The left-hand or right-hand front foglamp is faulty.
X
Check whether you are permitted to change the bulb yourself
(Y page 114).
or
X Visit a qualified specialist workshop. b
Rear fog lamp The rear foglamp is faulty.
X
Check whether you are permitted to change the bulb yourself
(Y page 114).
or
X Visit a qualified specialist workshop. b
Front
left parking
lamp or
Front right parking lamp The front left or front right parking lamp is faulty.
X
Check whether you are permitted to change the bulb yourself
(Y page 114).
or
X Visit a qualified specialist workshop. b
Reversing light The reversing lamp is faulty.
X
Check whether you are permitted to change the bulb yourself
(Y page 114).
or
X Visit a qualified specialist workshop. b
Rear left marker
lamp or
Rear right marker lamp The rear left or right side marker lamp is faulty.
X
Check whether you are permitted to change the bulb yourself
(Y page 114).
or
X Visit a qualified specialist workshop. 246
Display messagesOn-board computer and displays