2013 MERCEDES-BENZ CLA bulb

Useful information ............................106
Exterior lighting ................................ 106
Interior lighting ................................. 113
Replacing bulbs ................................. 114
Windscreen wipers ...........................118105Lights and windscreen wipers

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 2 in the
ignition lock.
The brightness of the ambient lighting may be
set using the on-board computer
( Y page 222).
Automatic interior lighting control
XTo switch on: set the switch to centre
position B.XTo switch off: set the switch to the |
position.
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 igni-
tion lock. You can activate this delayed
switch-off using the on-board computer
( Y page 222).
Manual interior lighting control
XTo switch the front interior lighting on:
set the switch to the c position.XTo switch off the interior lighting: set the
switch to the | position or (if the door
is closed) to the centre position.XTo switch the rear interior lighting on/
off: press the u button.XTo switch the reading lamps on/off:
press the p button.
Crash-responsive emergency lighting
The interior lighting is activated automatically
if the vehicle is involved in an accident.
XTo switch off the crash-responsive
emergency lighting: press the hazard
warning lamp button.
or
XLock and then unlock the vehicle using the
key.
Replacing bulbs
Important safety notes
Xenon bulbs
GDANGER
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 starting the engine.
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
GWARNING
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.
114Replacing bulbsLights and windscreen wipers

The bulb may explode if:
R you touch it
R it is hot
R you drop it
R you scratch it
Only operate bulbs in enclosed lamps
designed for that purpose. Only fit spare
bulbs of the same type and the specified volt-
age.
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.
Protect bulbs from moisture during opera-
tion. Do not allow bulbs to come into contact
with liquids.
There are bulbs other than the xenon bulbs
that you cannot replace yourself. Replace
only the bulbs listed ( Y page 115). Have the
bulbs that you cannot replace yourself
replaced at a qualified specialist workshop.
If you require assistance replacing bulbs, con-
sult a qualified specialist workshop.
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.
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
:Turn signal lamp: PY 21 W;Main-beam headlamp/daytime driving
lights/side lamp/parking lamp:
H15 55 W/15 W=Dipped-beam headlamp: H7 55 W
Vehicles with Intelligent Light System
:Cornering lamp: H7 55 W
Tail lamp (halogen headlamps)
:Rear foglamp: P 21 W;Brake lamp: W 16 W=Brake lamp: W 16 WReplacing bulbs115Lights and windscreen wipersZ

?Turn signal lamp: PY 21 WAReversing lamp: W 16 W
Replacing the front bulbs
Fitting/removing the cover on the front
wheel arch
You must remove the cover from the front
wheel housing before you can change the
front bulbs.
XTo remove: switch off the lights.XTurn the front wheels inwards.XTurn rotary knob : through 90°.
Cover ; is released.XPush cover ; down.XTo fit: push cover ; up.XTurn rotary knob : through 90°.
Cover ; is locked.
Dipped-beam headlamps (halogen
headlamps)
XRemove the cover in the front wheel arch
( Y page 116).XTurn housing cover : anti-clockwise and
pull it out.XTurn bulb holder ; anti-clockwise and pull
it out.XTake the bulb out of bulb holder ;.XInsert the new bulb into bulb holder ;.XInsert bulb holder ; into the lamp and turn
it clockwise.XAlign housing cover : and turn it clock-
wise until it engages.XReplace the cover in the front wheel arch
( Y page 116).
Main-beam headlamps/daytime driving
lights/side lamps and parking lamps
(vehicles with halogen headlamps)
XSwitch off the lights.XOpen the bonnet.XTurn housing cover : anti-clockwise and
pull it out.XTurn bulb ; anti-clockwise and pull it out.XInsert the new bulb and engage it to the
stop.XAlign housing cover : and turn it clock-
wise until it engages.116Replacing bulbsLights and windscreen wipers

Turn signal lamp (halogen headlamps)XSwitch off the lights.XOpen the bonnet.XTurn bulb holder : anti-clockwise and pull
it out.XTake the bulb out of bulb holder :.XInsert the new bulb into bulb holder :.XInsert bulb holder : and turn it clockwise
until it engages.
Cornering lamps (Intelligent Light Sys-
tem)
XSwitch off the lights.XOpen the bonnet.XTurn housing cover : anti-clockwise and
pull it out.XTurn bulb holder ; anti-clockwise and pull
it out.XTake the bulb out of bulb holder ;.XInsert the new bulb into bulb holder ;.XInsert bulb holder ; into the lamp and turn
it clockwise.XAlign housing cover : and turn it clock-
wise until it engages.
Replacing the rear bulbs
Opening and closing the side trim pan-
els
You must open the side trim panel in the boot
before you can replace the bulbs in the tail
lamps.
Left-hand side trim panel
XTo open: turn release knob : 90° in the
direction of the arrow and remove side trim
panel ;.XTo close: insert side trim panel ; and turn
release knob : 90° in the opposite direc-
tion to the arrow.
Right-hand side trim panel
Replacing bulbs117Lights and windscreen wipersZ

XTo open: loosen side trim panel : at the
top and fold it down in the direction of the
arrow.XTo close: insert side panel :.
Tail lamps
XSwitch off the lights.XOpen the boot.XOpen the side trim panel ( Y page 117).XRelease and remove connector.XPress retaining clips : at the same time in
the direction of the arrows.XPull the bulb holder out with the bulbs.
Bulb holder
:Brake lamp;Brake lamp=Rear foglamp?Reversing lampATurn signalsXBrake lamp/rear foglamp/reversing
lamp: remove the corresponding bulb from
the bulb holder.XInsert the new bulb into the bulb holder.XTurn signal lamp: lightly press the bulb
into the bulb holder, turn it anti-clockwise
and remove it from the bulb holder.XInsert the new bulb into the bulb holder and
turn it clockwise.XReinsert the bulb holder and engage on
retaining clips :.XRe-establish contact with the connector.XClose the side trim panel ( Y page 117).
Windscreen wipers
Switching the windscreen wipers on/
off
! 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 it is necessary to switch on the wind-
screen wipers in dry weather conditions,
always operate them using washer fluid.
! 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. Clean the
windscreen with washer fluid after an auto-
matic car wash.
118Windscreen wipersLights and windscreen wipers

XPress 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
! You can connect accessories with a
power rating of up to 240 W to the perma-
nent power supply and with a power rating
of up to 180 W to the power supply that is
switched on via the ignition lock.
The trailer battery may not be charged from
the power supply.
XTo switch the connected power supply
on or off: turn the key in the ignition lock
to position 2 or 0 respectively.
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 permanent power 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.
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 find more information about instal-
ling the trailer electrics at a qualified special-
ist workshop.
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 could be that
the current has fallen below the minimum
of 50 mA.
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 notes
Trailers with 7-pin connector: you can
make a connection to the 13-pin connector
on the ball coupling using an adapter plug or,
if necessary, an adapter cable. Both can be
obtained in a qualified specialist workshop.
Fitting the adapter
! Make sure that there is sufficient cable
play so that the cable cannot become
detached when cornering.
! Remove the installed adapter cable
before folding in the ball coupling. Other-
wise, damage may occur to the rear
bumper and the adapter cable.
XOpen the socket cover.XInsert connector with lug : into
groove ; of the socket. Turn the connec-
tor clockwise to the stop.XLet the cover engage.XIf you are using an adapter cable, secure
the cable to the trailer with cable ties.206Towing a trailerDriving and parking

Display messagesPossible causes/consequences and M Solutions6
Rear left-hand
side malfunction
Consult workshop  
or  Rear right-hand
side malfunction
Consult workshopSRS has malfunctioned at the rear on the left or right. The 6
warning lamp also lights up in the instrument cluster.GWARNING
The airbags or belt tensioners may either be triggered uninten-
tionally or, in the event of an accident, may not be triggered.
This poses an increased risk of injury.
XVisit a qualified specialist workshop.6
Left windowbag mal‐
function Consult
workshop  or Right
windowbag malfunc‐
tion Consult work‐
shopThere is a malfunction in the left-hand and/or right-hand window-
bag. The 6 warning lamp also lights up in the instrument clus-
ter.GWARNING
The left or right windowbag may either be triggered unintentionally
or, in the event of an accident, may not be triggered.
This poses an increased risk of injury.
XVisit a qualified specialist workshop.
Lights
i Display messages about LEDs:
This display message will only appear if all the LEDs have failed.
Display messagesPossible causes/consequences and M Solutionsb
Left cornering
light  or Right cor‐
nering lightThe left or right-hand cornering light is faulty.XCheck whether you are permitted to replace the bulb yourself
( Y page 114).
or
XVisit a qualified specialist workshop.b
Left dipped beam  
or  Right dipped
beamThe left or right-hand dipped-beam headlamp is faulty.XCheck whether you are permitted to replace the bulb yourself
( Y page 114).
or
XVisit a qualified specialist workshop.236Display messagesOn-board computer and displays