light MERCEDES-BENZ C-CLASS SALOON 2012 Service Manual

ULTRA RANGE Highbeam increases
the bright‐
ness of the cone of light tothe legally permitted
maximum.
Pa rtial high beam uses the high beam toshine
past other road users rath er than dazzling them.
The vehicle in front will be illuminated bythe low
beam.
At speeds below 25 km/h or when there is suf fi‐
cient stre et lighting:
R The partial high beam and the high beam will
be switched off automaticall y.
At speeds greater than 30 km/h:
R If no other road users are de tected, the high
beam will switch on automaticall y.
R Ifot her road users are de tected, the partial
high beam will switch on automaticall y.
At speeds abo ve40 km/h:
R If no other road users are de tected on a
st ra ight road, ULTRA RANGE Highbeam will
be swit ched on automaticall y.
R Ifot her road users are de tected, the partial
high beam will switch on automaticall y.R
If highly reflective signs are de tected, ULTRA
RANGE Highbeam will be switched off au to‐
matical ly.
At speeds greater than appr oximately 50 km/h:
R The headlamp range of the low beam is regu‐
lated automatically based on the dis tance to
ot her road users.
% The sy stem's optical sensor is located
behind the windscreen near theove rhead
control panel.
Switching Adaptive Highbeam Assist Plus
on/off
Switching on #
Turn the light switch tothe à position. #
Switch on the high beam using the combina‐
tion switch.
When the high beam is switched on automat‐
ically in the dar k,the_ indicator lamp on
th e multifunction display will light up. Switching off #
Switch off the high beam using the combina‐
tion switch. Setting
the dipped beam Multimedia sy
stem:
4 Vehicle 5
÷ Light settings
5 Dipped-beams #
Select Left-side traffic orRight-side traffic. Setting
theex terior lighting switch-off delay
time Multimedia sy
stem:
4 Vehicle 5
÷ Light settings
5 Exterior light shut-off #
Set the switch-off delay time. Light and sight
13 3
Internal use only

Setting
the sur round lighting Multimedia sy
stem:
4 Vehicle 5
÷ Light settings
5 Locator lighting #
Activate Oor deacti vate ª the function.
If th e sur round lighting is swit ched on, theex te‐
ri or lighting remains lit for 40 seconds af terthe
ve hicle is unloc ked. When youstart theve hicle,
th e sur round lighting is deactivated and the
automatic driving lights are activated. Interior lighting
Ad
justing the in terior lighting Fr
ont overhead control panel 1
p Front left reading lamp
2 | Automatic interior lighting control
3 c Front interior lighting
4 u Rear interior lighting
5 p Front right reading lamp #
Toswitch on/off: press button1–5
accordingly. Control panel in
thegr ab handle 1
p Rear reading lamp #
Toswitch on/off: press button1. Ad
justing the ambient lighting Multimedia sy
stem:
4 Vehicle 5
÷ Light settings
5 Ambient lighting
Setting the colour #
Select Colour. #
Set a colour. 134
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Internal use only

Ad
justing the brightness #
Select Brightness . #
Set a brightness value.
Ac tivating the brightness for zones #
Select Brightness zones . #
Activate Oor deacti vate ª the function.
The Display ,Front andRear zones can be set
separately. Setting
the interior lighting switch-off delay
time Multimedia sy
stem:
4 Vehicle 5
÷ Light settings
5 Interior light shut-off #
Set the switch-off delay time. Changing bulbs (only
forve hicles with halo‐
ge n headla mps) Note
s onchanging bulbs &
WARNING Risk of burn s from hot com‐
ponent parts whilst replacing a bulb
Bulbs, lamps and plugs can become very hot
during operation.
When replacing a bulb, you could burn your‐
self on these component parts. #
Allow the component parts tocool
down before replacing the bulb. R
Do not use a bulb if it has been dropped or if
itsglass has been sc ratched. The bulb may
ot herwise explode.
R Do not touch theglass bulb with your bare
hands.
R Protect bulbs from moisture and do not allow
bulbs tocome into contact wi thliquids. Overview of
the bulbs tobe changed Halogen headlamps
1
Turn signal light: PWY 24W bulb
2 High beam: H7 55 W bulb
3 Low beam: H7 55 W bulb Light and sight
13 5
Internal use only

Ta
il lamps 1
Turn signal light: PY 21W bulb
2 Reversing light: W 16W bulb Changing
the front bulbs (vehicles with halo‐
ge n headla mps) Fi
tting/ removing the co ver in the front
wheel ar ch
Re quirements:
R The lighting sy stem is switched off.
R The appropriate front wheel is turned
inwa rds. #
Toremo ve:using a suitable object, turn the
two mounts 1ofthe co ver2 in an anti-
clockwise direction as far as they will go. #
Remo vethe unloc ked co ver2 from the
wheel ar chliner bypulling it upwards. #
Tofit: inse rtco ver 2 at bottom of the wheel
ar ch liner. #
Using a suitable object, turn the two mounts
1 ofthe co ver2 in clockwise direction as
fa r as they will go.
Re placing bulbs in the halo gen headla mp
Re quirements:
The lighting sy stem is switched off.
Low beam/high beam
R A H7 55 W light bulb is available.
R The bonnet is open.
Tu rn signal lights:
R A PWY 24W light bulb is available.
R The co ver in the front wheel ar chhas been
re mo ved. 13 6
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Internal use only

1
Low beam
2 High beam
3 Turn signal lights #
Turn there leva nt housing co ver1–3 anti-
clockwise and remo veit. #
Low beam / high beam: turnthe soc ket
anti-clockwise and remo veit. #
Indicator: turnthe soc ket anti-clo ckwise,
re lease it and remo veit. #
Pull the bulb out of the soc ket. #
Inse rtthe new bulb into the soc ket su chthat
th e entire base of the bulb is resting on the
bottom of the soc ket. #
Inse rtthe soc ket and turn it clo ckwise. #
Press on the housing co ver and turn it clock‐
wise. #
Turn signal lights: installth e co ver in the
front wheel ar ch. Changing
there ar bulbs (vehicles with halo‐
ge n headla mps) Opening and closing
the side trim panels in
th e boot #
Toopen: release right-hand or left-hand side
trim panels 1attheto p and remo ve. #
Toclose: reinse rtside trim panel 1.Re
placing the tail lamp bulbs
Re quirements:
The lighting sy stem is switched off.
The side trim panel in the boot is open.
Tu rn signal lights:
R A PY 21W light bulb is available.
Re versing lights:
R A W 16W light bulb is available. Light and sight
137
Internal use only

#
Push the upper and lo wer catches on the
plug toge ther and remo vethe plug. #
Turn wing scr ew1 90° anti-clockwise and
re mo vethe bulb holder. #
Indicator: push bulb2gently into the bulb
mount, turn it anti-clockwise and remo veit
from the bulb mount. #
Insert the new bulb into the bulb mount and
turn it clockwise. #
Reversing light: pull bulb3out of the bulb
mount. #
Insert the new bulb into the bulb mount. #
Insert the bulb mount again. #
Turn wing scr ew1 90° clockwise. #
Insert the plug until the catch hooks engage
audibl y. #
Close the side trim panel. Wi
ndscreen wipers and windscreen washer
sy stem Switching
the windscreen wipers on/off 1
gWindsc reen wipers off
2 Ä Intermittent wiping, normal
3 Å Intermittent wiping, frequent 13 8
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Internal use only

4
° Continuous wiping, slow
5 ¯ Continuous wiping, fast #
Turn the combination switch tothe cor re‐
sponding position 1-5. #
Single wipe/washing: pushthe button on
th e combination switch in the direction of
ar row 1.
R í Single wipe
R î Wiping with washer fluid Re
placing the windsc reen wiper blades &
WARNING Risk of becoming trapped if
th e windscreen wipers are switched on
while wiper blades are being replaced
If th e windscreen wipers begin tomo vewhile
yo u are changing the wiper blades, you can
be trapped bythe wiper arm. #
Alw ays switch off the windscreen wip‐
ers and ignition before changing the
wiper blades. Moving
the wiper arms into there placement
position #
Switch the ignition on and then off again
immediatel y. #
Within around 15seconds, press and hold
th eî button on the combination switch
fo r appro ximately thre e seconds
(/ page 138).
The wiper arms will mo veinto there place‐
ment position.
Re moving the wiper blades #
Foldthe wiper arms away from the wind‐
screen. #
Hold the wiper arm with one hand. With the
ot her hand, turn the wiper blade away from
th e wiper arm in the direction of ar row 1 as
fa r as it will go. #
Slide catch 2inthe direction of ar row 3
until it engages in there mo val position. #
Remo vethe wiper blade from the wiper arm
in the direction of ar row4. Light and sight
13 9
Internal use only

Fi
tting the wiper blades #
Inse rtthe new wiper blade into the wiper
arm in the direction of ar row1. #
Slide catch 2inthe direction of ar row 3
until it engages in the locking position. #
Make sure that the wiper blade is seated cor‐
re ctly. #
Foldthe wiper arms back onto the wind‐
screen. #
Switch on the ignition. #
Press theî button on the combination
switch (/ page138).
The wiper arms will return tothe original
position. #
Switch the ignition off. Maintenance display #
Remo veprotective film 1 from the mainte‐
nance display on the tip of the newly fitted
wiper blades.
When the colour of the maintenance display
ch anges from black to yellow, the wiper blades
should be replaced. 14 0
Light and sight
Internal use only

%
The duration until the colour changes varies
depending on the usage conditions. Mir
rors Operating
the outside mir rors &
WARNING Risk of injury ifve hicle set‐
tings are adjus ted while theve hicle is in
motion
Yo u could lose cont rol of theve hicle in par‐
ticular in thefo llowing situations:
R Ifyo u adjust the driver's seat, the head
re stra ints, thesteering wheel or the mir‐
ro r while theve hicle is in motion.
R Ifyo ufast enyour seat belt while theve hi‐
cle is in motion. #
Before starting the engine: adjust the
driver's seat, head restra ints, steering
wheel and mir ror in particular and fas‐
te nyo ur seat belt. &
WARNING Risk of accident due tomis‐
judgement of dis tance when using the
outside mir ror
The outside mir rors reflect objects on a
smaller scale. The objects in view are in fact
closer than they appear. #
Therefore, alw ays look over your shoul‐
der in order toensure that you are
aw are of the actual dis tance between
yo u and thero ad users driving behind
yo u. Fo
lding the outside mir rors in/out #
Brief lypress button 1.
Re setting the outside mir rors
% Ifth e battery has been disconnected or com‐
ple tely discharged, the outside mir rors must
be reset. Only then will the automatic mir ror
fo lding function workproperly. #
Brief lypress the1 button. Light and sight
141
Internal use only

Ad
justs the outside mir rors #
Press button 3or4 toselect the outside
mir rorto be adjus ted. #
Use button 2toadjust the position of the
mir rorgl ass.
Engaging the outside mir rors #
Vehicles without electrically folding out‐
side mir rors: manually mo vethe outside
mir ror into the cor rect position. #
Vehicles with electrically folding outside
mir rors:press and hold button 1.
Yo u will hear a click and the mir ror will audi‐
bly click into place. The outside mir ror will
now be set tothe cor rect position. Au
tomatic anti-dazzle mir rors function &
WARNING Risk of acid burn s and poi‐
soning due tothe anti-dazzle mir ror elec‐
trolyte
Electrolyte may escape if theglass in an
automatic anti-dazzle mir ror breaks. The electrolyte is hazardous
tohealth and
causes ir rita tion. It mu stnot come into con‐
ta ct with your skin, eyes,respiratory or gans
or clo thing or be swallo wed. #
Ifyo u come into contact with electro‐
ly te , obser vethefo llowing:
R Immediately rinse the electrolyte
from your skin with water and seek
medical attention.
R If electrolyte comes into contact
with your eyes, immediately rinse
th em thoroughly with clean water
and seek medical attention.
R Ifth e electrolyte is swallo wed,
immediately rinse your mouth out
th oroughl y.Do not induce vomiting.
Seek medical attention immediately.
R Immedia tely ch ange out of clo thing
which has been con taminated with
electrolyte.
R If an allergic reaction occurs, seek
medical attention immediatel y. The inside
rearview mir ror and the outside mir‐
ro r on the driver's side will automatically go into
anti-dazzle mode if light from a headlamp hits
th e sensor on the inside rearview mir ror.
Sy stem limits
The sy stem will not go into anti-dazzle mode if:
R the engine is switched off.
R reve rsege ar is engaged.
R the interior lighting is switched on. Fr
ont-passenger outside mir ror parking posi‐
tion function The pa
rking position makes parking easier.
The front-passenger outside mir ror will swivel
down wards in the direction of there ar wheel on
th e front passenger's side when:
R the parking position is stored (/ page143).
R the front-passen ger mir ror is selected.
R reve rsege ar is engaged. 14 2
Light and sight
Internal use only