headlamp MERCEDES-BENZ CLA 2014 User Guide

XPress the combination switch beyond the
pressure point in the direction of
arrow.
In theposition, the high-beam
headlamps are only switched on when it is
dark and the engine is running.
The blueindicator lamp in the
instrument cluster lights up when the high-
beam headlamps are switched on.
XTo switch off the high-beam
headlamps:move the combination switch
back to its normal position.
The blueindicator lamp in the
instrument cluster goes out.
iVehicles with Adaptive Highbeam Assist:
when Adaptive Highbeam Assist is active,
it controls activation of the high-beam
headlamps (Ypage 108).
High-beam flasher
XTo switch on:turn the SmartKey in the
ignition lock to position1or2or start the
engine.
XPull the combination switch in the direction
of arrow".
Hazard warning lamps
The hazard warning lamps automatically
switch on if:
Ran air bag is deployed
Rthe vehicle decelerates rapidly from a
speed of more than 45mph(70 km/h) and
comes to a standstill
XTo 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
corresponding side of the vehicle will flash.
XTo switch off the hazard warning
lamps:press button.
The hazard warning lamps switch off
automatically if the vehicle reaches a speed
of over 6mph (10km/h) again after a full
brake application.
iThe hazard warning lamps still operate if
the ignition is switched off.
Headlamp cleaning system
The headlamps are cleaned automatically if
the "Wipe with washer fluid" function is
operated five times while the lights are on and
the engine is running (Ypage 115). When you
switch off the ignition, the automatic
headlamp cleaning system is reset and
counting is resumed from 0.
Cornering light function
The cornering light function improves the
illumination of the road over a wide angle in
the direction you are turning, enabling better
visibility in tight bends, for example. The
cornering light function can only be activated
whenthe low-beam headlamps are switched
on.
Exterior lighting107
Lights and windshield wipers
Z

Active:
Rif you are driving at speeds below 25 mph
(40 km/h) and switch on the turnsignal or
turnthe steering wheel.
Rif you are driving at speeds between
25 mph(40 km/h) and 45 mph(70 km/h)
and turn the steering wheel.
Not active:if you are driving at speeds above
25 mph (40 km/h) or switch off the turn
signal or turn the steering wheel to the
straight-ahead position.
The cornering lamp may remain lit for a short
time, but is automatically switched off after
no more than three minutes.
Extended range fog lamps
The extended range fog lamps reduce the
glare experienced by the driverand improve
the illuminationofthe edge of the road.
Active:if you are driving at speeds below
40 mph (70 km/h) and you switch on the rear
fog lamp.
Not active:if, following activation, you are
driving at speeds above 60 mph (100 km/h)
or if you switch off the rear fog lamp.
Adaptive Highbeam Assist
Important safety notes
GWARNING
Adaptive Highbeam Assist does not recognize
road users:
Rwho have no lights, e.g. pedestrians
Rwho have poor lighting, e.g. cyclists
Rwhose lighting is blocked, e.g. by a barrier
In very rare cases, Adaptive Highbeam Assist
may fail to recognize other road users that
have lights, or may recognize them too late.
In this or similar situations, the automatic
high-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 high-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:
Rpoor visibility, e.g. due to fog, heavy rain or
snow
Rdirt on the sensors or the sensors are
obscured
General notes
You can use this function to set the
headlamps to change between low beam and
high beam automatically.The system
recognizes vehicles with their lights on, either
approaching from the opposite direction or
traveling in front of your vehicle, and
consequently switches the headlamps from
high beam to low beam.
The system automatically adapts the low-
beam headlamp range depending on the
distance to the other vehicle. Once the
108Exterior lighting
Lights and windshield wipers

system no longer detects any other vehicles,
it reactivates the high-beam headlamps.
The system's optical sensor is located behind
the windshield near the overhead control
panel.
Switching Adaptive Highbeam Assist
on/off
XTo activate:activate the Adaptive
Highbeam Assist function using the on-
board computer (Ypage 207).
XTurn the light switch to.
XPress the combination switch beyond the
pressure point in the direction of arrow
(Ypage 106).
Theindicator lamp in the
multifunction display lights up if it is dark
and the light sensor activates the low-beam
headlamps.
If you are driving at speeds above
approximately 28 mph (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
approximately 35 mph (55 km/h) and no
other road users have been detected:
The high-beam headlamps are switched on
automatically. Theindicator lamp in
the instrument cluster also lights up.
If you are driving at speeds below
approximately 30 mph (45 km/h) or other
road users have been detected or the roads
are adequately lit:
The high-beam headlamps are switched off
automatically. Theindicator lamp in
the instrument cluster goes out. The
indicator lamp in the multifunction display
remains lit.
XTo deactivate:move the combination
switch back to its normal position.
Theindicator lamp in the
multifunction display goes out.
Headlamps fogged up on the inside
The headlamps may fog up on the inside if
there is high atmospheric humidity.
XSwitch on the lights and drive off.
The level of moisture diminishes,
depending on the length of the journey and
the weather conditions (humidity and
temperature).
If the level of moisture does not diminish:
XHave the headlamps checked at a qualified
specialist workshop.
Exterior lighting109
Lights and windshield wipers
Z

Crash-responsive emergency lighting
The interiorlighting 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
XLockand then unlock the vehicle using the
key.
Replacing bulbs
Important safety notes
Xenon bulbs
GDANGER
Xenonbulbs carry a 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
contacts of the Xenon bulb. Always have work
on the Xenon bulbs carried out at a qualified
specialist workshop.
If your vehicle is equipped with Xenon bulbs,
you can recognize 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 aspectof
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 connectors can get very hot
when operating. If you change a bulb, you
could burn yourself on these components.
There is a risk of injury.
Allow these components to cool down before
changing a bulb.
Do not use a bulb that has been dropped or if
its glass tube has been scratched.
The bulb may explode if:
Ryou touch it
Rit is hot
Ryou drop it
Ryou scratch it
Only operate bulbs in enclosed lamps
designed for that purpose. Only install spare
bulbs of the same type and the specified
voltage.
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.
Protectbulbs from moisture during
operation.Do not allow bulbs to come into
contact with liquids.
There are bulbs other than the Xenon bulbs
that you cannot replace. Replace only the
bulbs listed (Ypage 111). Have the bulbs that
you cannot replace yourself changed at a
qualified specialist workshop.
If you require assistance changing bulbs,
consult 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: changing bulbs/bulb types
You can change the following bulbs. The bulb
type can be found in the legend.
Replacing bulbs111
Lights and windshiel dw ipers
Z

Halogen headlamps
Turnsignal lamp: PY 21 W
Low-beam headlamp/daytime running
lamp/parking lamp/standing lamp:
H15 55 W/15 W
"Low-beam headlamp: H7 55 W
Vehicles with IntelligentLight System
Cornering lamp: H7 55 W
Tail lamp (halogen headlamps)
Rear fog lamp: P 21 W
Brake lamp: W 16 W
"Brake lamp: W 16 W
!Turn signal lamp: PY 21 W
Backup lamp: W 16 W
Changing the front bulbs
Removing and installing thecover in the
front wheel housing
You must remove the cover from the front
wheel housing before you can change the
frontbulbs.
XTo remove:switch off the lights.
XTurn the frontwheels inwards.
XTurn rotary knobthrough 90°.
Coveris released.
XPush coverdown.
XTo install:push coverup.
XTurn rotary knobthrough 90°.
Coveris locked.
Low-beam headlamps (halogen
headlamps)
112Replacing bulbs
Lights and windshield wipers

XRemove the cover in the front wheel
housing (Ypage 112).
XTurn housing covercounter-clockwise
and pull it out.
XTurn bulb holdercounter-clockwise and
pull it out.
XTake the bulb out of bulb holder.
XInsertthe new bulb into bulb holder.
XInsert bulb holderinto the lamp and turn
it clockwise.
XAlign housing coverand turn it
clockwise until it engages.
XReplace the cover in the front wheel
housing (Ypage 112).
High-beam headlamps/daytime
running lamps/parking lamps/
standing lamps (vehicles with halogen
headlamps)
XSwitch off the lights.
XOpen the hood.
XTurn housing covercounter-clockwise
and pull it out.
XTurn bulbcounter-clockwise and pull it
out.
XInsert the new bulb and engage it to the
stop.
XAlign housing coverand turn it
clockwise until it engages.
Turn signals (halogen headlamps)
XSwitch off the lights.
XOpen the hood.
XTurn bulb holdercounter-clockwise and
pull it out.
XTake the bulb out of bulb holder.
XInsert the new bulb into bulb holder.
XInsert bulb holderand turn it clockwise
until it engages.
Cornering light function (Intelligent
Light System)
XSwitch off the lights.
XOpen the hood.
XTurn housing covercounter-clockwise
and pull it out.
XTurn bulb holdercounter-clockwise and
pull it out.
XTake the bulb out of bulb holder.
XInsert the new bulb into bulb holder.
Replacing bulbs113
Lights and windshield wipers
Z

thesymbol in the multifunction
display are shown in orange.
XPress thebutton to save the setting.
Further information on daytime running
lamps (Ypage 105).
Switching Adaptive HighbeamAssist on/
off
This function is only available on vehicles with
the Intelligent Light System.
XPress theorbutton on the
steering wheel to select theSettings
menu.
XPress theorbutton to select the
Lightssubmenu.
XPressto confirm.
XPress theorbutton to select the
Adaptive Highbeamfunction.
If theAdaptive Highbeamfunction has
been switched on, the cone of light and the
symbol in the multifunction display
are shown in orange.
XPress thebutton to save the setting.
For further information about Adaptive
Highbeam Assist, see (Ypage 108).
Setting the brightness of the ambient
lighting
XPress theorbutton on the
steering wheel to select theSettings
menu.
XPress theorbutton to select the
Lightssubmenu.
XPressto confirm.
XPress theorbutton to select the
Amb. Light +/-function.
You will see the selected setting.
XPressto confirm.
XPress theorbutton to adjust the
brightness to any level fromDisabled
toLevel 5(bright).
XPress theorbutton to save the
setting.
Activating/deactivating surround
lighting and exterior lighting delayed
switch-off
If you have activated theSurround
Lightingfunction and the light switch is set
to, the following functions are activated
when it is dark:
Rsurround lighting:the exterior lighting
remains lit for 40 seconds after unlocking
with the key. If you start the engine, the
surround lighting is switched off and
automatic headlamp mode is activated
(Ypage 105).
Rexterior lighting delayed switch-off:the
exterior lighting remains lit for
60 seconds after the engine is switched off.
If you close all the doors and the trunklid,
the exterior lighting goes off after
15 seconds.
XPress theorbutton on the
steering wheel to selecttheSettings
menu.
XPress theorbutton to select the
Lightssubmenu.
XPressto confirm.
XPress theorbutton to select the
Surround Lightingfunction.
When theSurround Lightingfunction is
activated, the light cone and the area
around the vehicle are displayed in orange
in the multifunction display.
XPress thebutton to save the setting.
Deactivating delayed switch-off of the
exterior lighting temporarily:
XBefore leaving the vehicle, turn the
SmartKey to position0in the ignition lock.
XTurn the SmartKey to position2in the
ignition lock.
The exterior lighting delayed switch-off is
deactivated.
Delayed switch-off of the exterior lighting is
reactivated the next time you start the
engine.
Menus and submenus207
On-board computer and displays
Z

iDepending on your vehicle'sequipment,
when the surround lighting and delayed
switch-offexterior lighting are on, the
following light up:
RParking lamps
RFront fog lamps
RLow-beam headlamps
RDaytime running lamps
RSide marker lamps
RSurround lighting in the exterior mirrors
Activating/deactivating the interior
lighting delayedswitch-off
If you activate theInterior Lighting
Delayfunction, the interior lighting remains
on for 20 seconds after you remove the key
from the ignition lock.
XPress theorbutton on the
steering wheel to select theSettings
menu.
XPress theorbuttonto select the
Lightssubmenu.
XPressto confirm.
XPress theorbutton to select the
Interior Lighting Delayfunction.
If theInteriorLightingDelayfunction
has been switched on, the vehicle interior
is displayed in orange in the multifunction
display.
XPress thebutton to save the setting.
Vehicle
Activating/deactivating the automatic
door locking mechanism
XPress theorbutton on the
steering wheel to select theSettings
menu.
XPress theorbutton to select the
Vehiclesubmenu.
XPressto confirm.
XPress theorbutton to select the
Automatic Door Lockfunction.
When theAutomaticDoorLockfunction
is activated, the vehicle doors are displayed
in orange in the multifunction display.
XPress thebutton to save the setting.
If you activate theAutomatic Door Lock
function, the vehicle is centrally locked above
a speed of around 9 mph (15 km/h).
For further information on the automatic
locking feature, see (Ypage 79).
Activating/deactivating the acoustic
locking verification signal
If you switch on theAcousticLockfunction,
an acoustic signal sounds when you lock the
vehicle.
XPress theorbutton on the
steering wheel to select theSettings
menu.
XPress theorbutton to select the
Vehiclesubmenu.
XPressto confirm.
XPress theorbutton to select the
Acoustic Lockfunction.
If theAcousticLockfunction is activated,
the\nsymbol in the multifunction
display lights up orange.
XPress thebutton to save the setting.
Activating/deactivating the radar sensor
system
XPress theorbutton on the
steering wheel to select theSettmenu.
XPress theorbutton to select the
Vehiclesubmenu.
XPressto confirm.
XPress theorbutton to select
Radar Sensor (See Oper. Manual).
You will see the selected setting:Onor
Off.
XPress thebutton to save the setting.
208Menus and submenus
On-board computer and displays

Display messagesPossible causes/consequences and
Solutions
XWait foraperiod of at least 60 seconds until the necessary
system checks have been completed.
XMake sure that the display messages do not appear in the
multifunction display.
If these conditions are fulfilled, the front-passenger seat can be
occupied again. Whether the PASSENGER AIR BAG OFF indicator
lamp remains lit or goes out depends on how OCS classifies the
occupant.
If the conditions are not fulfilled, the system is not operating
correctly.
XVisit a qualified specialist workshop immediately.
For further information about the Occupant Classification System,
see (Ypage 45).
Lights
iDisplay messages about LEDs:
This display message will only appear if all LEDs have failed.
Display messagesPossible causes/consequences and
Solutions

Check Left
Cornering Lightor
Check Right
Cornering Light
The left or right-hand cornering light is defective.
XCheck whether you are permitted to replace the bulb yourself
(Ypage 111).
or
XVisit a qualified specialist workshop.

Check Left Low
BeamorCheck
Right Low Beam
The left or right-hand low-beam headlamp is defective.
XCheck whether you are permitted to replace the bulb yourself
(Ypage 111).
or
XVisit a qualified specialist workshop.

Check Rear Left
Turn Signalor
Check Rear Right
Turn Signal
The rear left-hand or rear right-hand turn signal is defective.
XCheck whether you are permitted to replace the bulb yourself
(Ypage 111).
or
XVisit a qualified specialist workshop.
Display messages223
On-board computer and displays
Z

Checking and adding other service
products
Checking coolantlevel
GWARNING
The engine cooling system is pressurized,
particularly when the engine is warm. When
opening the cap, you could be scalded by hot
coolant spraying out.There is a risk of injury.
Let the engine cool down before opening the
cap. Wear eye and hand protection when
opening the cap. Open the cap slowly half a
turn to allow pressure to escape.
!The coolant may only be checked and
corrected when the engine is cool (coolant
temperature below 104 ‡ (40 †).
Checking the coolant when the coolant
temperature is above 104 ‡ (40 †) may
result in damage to the engine or to the
engine cooling system.
Example
XPark the vehicle on a level surface.
Only check the coolant level when the
vehicle is on a level surface and the engine
has cooled down.
XTurn the SmartKey to position2in the
ignition lock (Ypage 137).
XCheck the coolant temperature display in
the instrument cluster.
The coolant temperature must be below
104 ‡ (40 †).
XTurn the SmartKey to position
0(Ypage 137) in the ignition lock.
XSlowly turn caphalf a turn counter-
clockwise to allow excess pressure to
escape.
XTurn capfurther counter-clockwise and
remove it.
If the coolant is at the level of marker bar
"in the filler neck when cold, there is
enough coolant in coolant expansion
tank.
XIf necessary, add coolant that has been
tested and approved by Mercedes-Benz.
XReplace capand turn it clockwise as far
as it will go.
For further information on coolant, see
(Ypage 349).
Adding washer fluid to the windshield
washer system/headlampcleaning
system
GWARNING
Windshield washer concentrate is highly
flammable. If it comes into contact with hot
engine components or the exhaust systemit
could ignite. There is a riskoffire and injury.
Make sure that no windshield washer
concentrate is spilled next to the filler neck.
Example
XTo open:pull capupwards by the tab.
XAdd the premixed washer fluid.
XTo close:press caponto the filler neck
until it engages.
Engine compartment283
Maintenance and care
Z