2011 MERCEDES-BENZ C-CLASS SALOON headlamp

Manual interior lighting control
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. Changing bulbs
Important safety notes
Xenon bulbs If yourv
ehicle 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 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 126). Have the bulbs that
you cannot replace yourself changed at a
qualified specialist workshop.
Mercedes-Benzr ecommends 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 correct type.
If the new bulb still does not light up, consult
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. G
WARNING
Bulbs and lights can become very hot. For this
reason, allow them to cool down before
changing them. Otherwise, you could burn
yourself when you touch them.
Keep bulbs out of the reach of children .Oth-
erwise, they could damage them, for example,
and injure themselves. Changing bulbs
125Lights andwindscreen wipers
Z

Never use a bulb which has been dropped.
Such a bulb may explode and injure you.
Halogenb ulbs 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 replace the following bulbs. The
details for 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 Bi-xenon headlamps
:
Cornering lamp: H7 55 W Tail lamps
:
Reversing lamp: P 21 W
; Brake lamp: P 21 W
= Brake lamp/side 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 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. 126
Changing bulbsLights and windscreen wipers

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.
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 lug-
gage compartment/boot and remove the
first-aid kit before you can change the bulbs
in the tail lamps. Changing bulbs
127Lights and windscreen wipers Z

X
To reset the trip meter: press and hold
the V until the standard display
appears.
X Press and hold the Cbutton until the
value has been reset. Trip computer
X Press the Vbutton on the steering
wheel repeatedly until the trip computer
appears. :
Distance
; Average speed
= Time
? Average fuel consumption
X To reset the trip computer: press and
hold the Cbutton on the steering wheel
until the values have been reset. Calling up the range
X Press the Vbutton on the steering
wheel repeatedly until the approximate
range appears.
The approximate range which can be covered
depends on the fuel level and your current
driving style .Ifthere is only a small amount
of fuel left in the fuel tank, the display shows
a vehicle being refuelled Cinstead of the
range. Switching the daytime driving lights
on/off
If you have activated the Day. driv.lights: function and the light switch is in the Ã
position, the daytime driving lights are
automatically switched on during daylight
hours when the engine is running. When it is
dark, the side lamps and the dipped-beam
headlamps are switched on automatically.
On vehicles with daytime driving lamps, the
factory setting is on .
If you want to change the setting for the Day. driv. lights: function, you have to turn
the key in the ignition lock to position 1.
X Press the Vbutton on the steering
wheel repeatedly until the Day. driv. lights: menu appears.
You will see the selected setting: on or
off .
X Press the WorX button to change
the setting. Displays and operation (12-button
multifunction steering wheel)
Coolant temperature gauge
The coolant temperature gauge is in the
instrumentc lusteront he left-hand side.
Under normal operating conditions and with
the specified coolant level, the coolant tem-
perature may rise to 120 †.
At high outside temperatures and when driv-
ing uphill, the coolant temperature may rise
to the end of the scale. Rev counter
The red band in the rev counter indicates the
engine's overrevving range.
! Do not drive in the overrevving range.
Doing so will damage the engine.
The fuel supply is interrupted to protect the
engine when the red band is reached. 226
Displays and operation (12-button multifunction steering wheel)On-board computer and displays

daytime driving lights are automatically
switched on during daylight hours when the
engine is running. When it is dark, the side
lamps and the dipped-beam headlamps are
also switched on automatically.
X
Switch off the engine.
X Press the =or; button on the steer-
ing wheel to select the Settings menu.
X Press the :or9 button to select the
Light submenu.
X Press the abutton to confirm.
X Press the :or9 button to select the
Day lights function.
If the Day lights have been switched on,
the cone of light and the Wsymbol in
the multifunction display are shown in red.
X Press the abutton to save the setting.
Switching the Intelligent Light System
on/off
If you activate the Intell. Light Sys.function, you activate the following functions:
R
motorway mode
R active light function
R cornering light function
R extended range foglamps
X Press the =or; button on the steer-
ing wheel to select the Settings menu.
X Press the :or9 button to select the
Light submenu.
X Press the abutton to confirm.
X Press :or9 to select the Intell. Light Sys. function.
If the Intell. Light Sys. function has
been switched on, the cone of light and the
L symbol in the multifunction display
are shown in red.
X Press the abutton to save the setting.
If you set the dipped-beam headlamps for
driving on the right/left (Y page 240), the
multifunction display shows the Systeminoperative display message under the image of the vehicle for the
Intell. Light
Sys. function in the
Light submenu.
Setting the dipped-beam headlamps for
driving on the left/right
This function is only available on vehicles with
the Intelligent Light System.
You can use this function to switch between
symmetrical beam and asymmetrical dipped
beam (Y page 118).
If you set the dipped-beam headlamps for
driving on the right/left, then motorway
mode and the extended range foglamps are
not available.
X Press the =or; button on the steer-
ing wheel to select the Settings menu.
X Press the :or9 button to select the
Light submenu.
X Press the abutton to confirm.
X Press :or9 to select the Dipped beams Setting for function.
You will see the selected setting: Right- side traffic or
Left-side traffic .
X Press the abutton to save the setting.
When you change the setting, conversion
does not take place until the nex ttime the
vehicle is stationary.
You can also have the dipped-beam head-
lamps set for driving on the right or left at a
qualified specialist workshop.
Switching Adaptive Highbeam Assist on/
off
X Press the =or; button on the steer-
ing wheel to selec tthe Settings menu.
X Press the :or9 button to select the
Light submenu.
X Press the abutton to confirm.
X Press the :or9 button to select the
Adapt. main beam function.
If the Adapt. main beam function has
been switched on, the cone of light and the 240
Displays and operation (12-button multifunction steering wheel)On-board computer and displays

Display messages Possible causes/consequences and
M Solutions
Vehicles with trailer tow hitch
:afuse may have blown.
X Check the fuses (Y page 354).
X If necessary, replace the blown fuse .Observe the warning notes
as you do so.
If the display message continues to be displayed:
X Visit a qualified specialist workshop. b
AUTO
lights inoper‐
ative The light senso
ris faulty.
X Visit a qualified specialist workshop. b
Switch off lights The lights are still switched on when you leave the vehicle. A
warning tone also sounds.
X
Turn the light switch to Ã.Lights (12-button multifunction steering wheel)
i Display messages aboutL EDs:
This display message will only appear if all LEDs have failed. Display messages Possible causes/consequences and
M Solutions
b
Left cornering
light or
Right cor‐ nering light The left or right-hand cornering ligh
tis faulty.
X Check whether you are permitted to change the bulb yourself
(Y page 125).
or
X Visit a qualified specialist workshop. b
Left dipped beam
or
Right dipped beam The left or right-hand dipped-beam headlamp is faulty.
X
Check whether you are permitted to change the bulb yourself
(Y page 125).
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. 264
Display messagesOn-board computer and displays

must display less than 70
†.Otherwise, you
could be scalded if hot coolant escapes. X
Slowly tur ncap : half a turn anti-clock-
wise and allow excess pressure to escape.
X Turn cap :further anti-clockwise and
remove it.
If the coolant is at the level of marker bar
= in the fille rneck when cold, there is
enough coolant in coolant expansion
tank ;.
If the coolant level is approximately 1.5 cm
above marker bar =in the filler neckw hen
warm, there is enough coolant in coolant
expansion tank ;.
X If necessary, top up with coolant that has
been tested and approved by Mercedes-
Benz.
X Replace cap :and turn it clockwise as far
as it will go.
For further information on coolant, see
(Y page 383).
Windscreen washer system and head-
lamp cleaning system The washer fluid reservoir is used for both the
windscreen washer system and the headlamp
cleaning system.
i
Components and service products must
be matched. Mercedes-Benz recommends
that you use products tested and approved
by Mercedes-Benz. They are listed in this
Mercedes-Ben zOwner's Manual in the
appropriate section. You can identify service products approved
by Mercedes-Ben
zby th efollowing inscrip-
tions on the container:
R MB-Freigabe (e.g. MB-Freigabe 371.0)
R MB-Approval (e.g. MB-Approval 371.0)
Other labels and recommendations that
make reference to quality level or a speci-
fication according to an MB Sheet no. (e.g.
MB 371.0) are not necessarily approved by
Mercedes-Benz.
You can obtain further information from
any Mercedes-Benz Service Centre. G
WARNING
Windscreen washer fluid is highly flammable.
Fire, naked flames and smoking are prohibi-
ted when handling washer fluid concentrate.
! Only use washer fluid concentrate which
is suitable for plastic lamp lenses. Unsuit-
able washer fluid concentrate could dam-
age the plastic lamp lenses of the head-
lamps.
! Do not use distilled or de-ionised water in
the washer fluid reservoir. Otherwise, the
level sensor may be damaged.
i Add windscreen washer concentrate, e.g.
MB SummerFit, to the washer fluid all year
round. Example: washer fluid reservoir
X
Mix the windscreen washer fluid in a con-
tainer beforehand.
X At temperatures above freezing: fill the
washer fluid reservoir with amix of water Engine compartment
325Maintenance and care Z