light MERCEDES-BENZ A-CLASS SALOON 2018 Service Manual

Ac
tivating/deactivating the hazard warning
lights #
Press button 1.
The hazard warning lights will switch on auto‐
matically if:
R the airbag has been deplo yed.
R theve hicle is heavily braked from a speed of
more than 70 km/h toast andstill. When
you pull away again, the hazard warning
lights will switch off automatically at appr ox‐
imately 10km/h. You can also swit choff the
hazard warning lights using button 1. Ad
aptive functions, MULTIBEAM LED Intelligent Light Sy
stem function
The MULTIBEAM LED headlamps adapt tothe
driving and weather situation and pr ovide exten‐
ded functions for impr oved illumination of the
ro ad.
The sy stem comprises thefo llowing functions:
R Active headla mps (/ page130)
R Cornering light (/ page131)
R Motorw ay mode (/ page131)
R City lighting ( /page131)
Sy stem limitations
R The sy stem is active only when it is dar k.Ac
tive headlamps function R
The headlamps follow thesteering mo ve‐
ments.
R Releva nt areas are better illumina ted during
tra vel.
The functions are active when the high beam is
switched on. 13 0
Light and sight

Cornering light function
The cornering light impr
ovesth e illumination of
th e car riag ewa yove r a wide angle in the turning
direction, enabling better visibility on tight
bends, forex ample. It can be activated on ly
when the low beam is switched on.
The function is active:
R at speeds below 40 km/h when the turn sig‐
nal light is switched on or thesteering wheel
is turned
R at speeds between 40 km/h and 70 km/h
when thesteering wheel is turned Ro
undabout and intersection function: the
cornering light is acti vated on bo thsides thro ugh
an evaluation of the cur rent GPS position of the
ve hicle. It remains active until af terth eve hicle
has left thero undabout or the intersection.
Mo torw ay mode function
Mo torw ay mode increases thera nge and bright‐
ness of the cone of light, enabling better visibil‐
ity. The function is active if a mo
torw ay jou rney is
de tected by:
R theve hicle's speed
R the multifunction camera R
the GPS
The function is not active: R at speeds below 80 km/h.
Fu nction of city lighting
City lighting impr ovesth e illumination of road‐
sides within built-up areas using a broader distri‐
bution of light.
The function is active:
R at low speeds
R in illuminated parts of built-up areas
Swit ching the Intelligent Light Sy stem on or
off
Requ irement:
R The ignition is switched on.
Multimedia sy stem:
4 © 5
Settings 5
Lights
5 Intell. Light System #
Activate or deacti vate the function. Light and sight
131

Ad
aptive Highbeam Assist Ad
aptive Highbeam Assist function &
WARNING Risk of accident despi te
Ad aptive Highbeam Assist
Ad aptive Highbeam Assist does not recog‐
nise thefo llowing road users:
R Road users without lights, e.g. pedes‐
trians
R Road users with poor lighting, e.g.
cyclists
R Road users whose lighting is obstructed,
e.g. bya bar rier
On very rare occasions, Adaptive Highbeam
Assist may failto recognise other road users
with their own lighting, or may recognise
th em too late.
In this, or in similar situations, the automatic
main beam will not be deactivated or will be
activated despite the presence of other road
users. #
Alw ays obser vethe tra ffic carefully and
switch off the main beam in good time. Ad
aptive Highbeam Assist cannot take into
account road, weather or traf fic conditions.
De tection may be restricted in thefo llowing
cases:
R in poor visibilit y,e.g. fog, heavy rain or snow
R ifth ere is dirt on the sensors or the sensors
are obscured
Ad aptive Highbeam Assist is on lyan aid. You are
re sponsible for adju sting theve hicle's lighting to
th e pr evailing light, visibility and traf fic condi‐
tions. The
Adaptive Highbeam Assist automatically
swit ches between thefo llowing types of light:
R Low beam
R High beam
At speeds abo ve30 km/h:
R If no other road users are de tected, the high
beam will be switched on automatically. 13 2
Light and sight

The high beam switches off automatically in
the
fo llowing cases:
R Atspeeds below 25 km/h.
R Ifot her road users are de tected.
R Ifstre et lighting is suf ficient.
At speeds abo veappr 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
th e windscreen near theov erhead control panel.
Switching Adaptive Highbeam Assist on/off #
Toswitch on: turnthe light switch tothe
à position. #
Switch on the main beam using the combina‐
tion switch.
When the main beam is switched on auto‐
matically in the dar k,the _ indicator
lamp on the multifunction display comes on. #
Toswitch off: switch offthe main beam
using the combination switch. Ad
aptive Highbeam Assist Plus Ad
aptive Highbeam Assist Plus function &
WARNING Risk of accident despi te
Ad aptive Highbeam Assist Plus
Ad aptive Highbeam Assist Plus does not rec‐
ognise thefo llowing road users:
R Road users without lights, e.g. pedes‐
trians
R Road users with poor lighting, e.g.
cyclists
R Road users whose lighting is obstructed,
e.g. bya bar rier
On very rare occasions, Adaptive Highbeam
Assist Plus may failto recognise other road
users that ha velights, or may recognise
th em too late.
In this, or in similar situations, the automatic
main beam will not be deactivated or will be
activated despite the presence of other road
users. #
Alw ays obser vethe tra ffic carefully and
switch off the main beam in good time. Ad
aptive Highbeam Assist Plus cannot take into
account road, weather or traf fic conditions.
De tection may be restricted in thefo llowing
cases:
R in poor visibilit y,e.g. fog, heavy rain or snow
R ifth ere is dirt on the sensors or the sensors
are obscured
Ad aptive Highbeam Assist Plus is on lyan aid.
Yo u are responsible for adju sting theve hicle's
lighting tothe pr evailing light, visibility and traf‐
fi c conditions. Light and sight
13 3

The
Adaptive Highbeam Assist Plus automati‐
cally swit ches between thefo llowing types of
light:
R Low beam
R Partial high beam
R High beam
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 abo ve30 km/h:
R If no other road users are de tected, the high
beam will be switched on automaticall y.
R Ifot her road users are de tected, the partial
high beam will be switched on automaticall y.
At speeds below 25 km/h or when there is suf fi‐
cient stre et lighting:
R The high beam will switch off automaticall y.
R The partial high beam will switch off auto‐
maticall y.
The sy stem's optical sensor is located behind
th e windscreen near theov erhead control panel.
Switching Adaptive Highbeam Assist Plus
on/off #
Toswitch on: turnthe light switch tothe
à position. #
Switch on the main beam using the combina‐
tion switch.
When the main beam is switched on auto‐
matically in the dar k,the _ indicator lamp on
the multifunction display will light
up. #
Toswitch off: switch offthe main beam
using the combination switch. Setting
theex terior lighting switch-off delay
time Re
quirements:
R The light switch is in theà position.
Multimedia sy stem:
4 © 5
Settings 5
Lights
5 Ext. light. del. shut-off
The exterior lighting is activated forth e confi g‐
ured time when theve hicle is par ked. #
Set the switch-off delay time. 134
Light and sight

Switching
the sur round lighting on or off Multimedia sy
stem:
4 © 5
Settings 5
Lights
5 Surround lighting
When Surround lighting is active,theex terior
lighting lights up for 40 seconds af terth eve hicle
is unloc ked. When youstart theve hicle, the sur‐
ro und lighting is deactivated and the automatic
driving lights are activated. #
Activate or deacti vate the function. 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 or off: press button1–5
accordingly. Control panel in
thegr ab handle 1
p Rear reading lamp #
Toswitch on or off: press button1. Ad
justing the ambient lighting Multimedia sy
stem:
4 © 5
Comfort 5
Ambient lighting
Setting the colour #
Select Colour. #
Set therequ ired colour.
% There are 64colours available. Light and sight
13 5

Ad
justing the brightness #
Select Brightness .
Ad just the brightness.
Ac tivating the brightness for zones #
Select Brightness . #
Select Brightness zones .#
Activate or deacti vate the function.
The EMPHASIS, AMBIENTandVENTS zones
can be set separatel y.
Ac tivating multi-coloured lighting #
Select Colour. #
Select Multi-colour.
The reare ten preset colour combinations
av ailable. #
Select a colour combination.
Ac tivating multi-coloured animation #
Select Colour. #
Select Multi-colour animat..
The chosen colour combination will change
at predefined inter vals. Ac
tivating welcome lighting #
Select Colour. #
Select Welcome.
When theve hicle is unloc ked, a special ambi‐
ent lighting sequence will run.
Ac tivating dependency on air conditioning
settings #
Select Colour. #
Select Climate.
If ch anges are made tothete mp erature set‐
ting in theve hicle, the colour of the ambient
lighting will change brief ly. Switching
the interior lighting switch-off
delay time on or off Multimedia sy
stem:
4 © 5
Settings 5
Lights
5 Int. light. del. shut-off #
Switch the lighting switch-off delay time on
or off.
When this function is active, the interior light‐
ing lights up again briefly af terth eve hicle
has been loc ked. Changing bulbs (only
forve hicles with halo‐
ge n headla mps) Note
s onchanging bulbs &
WARNING Risk of bu rns 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. 13 6
Light and sight

#
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
Main beam: H7 55 W bulb
2 Dipped beam: H7 55 W bulb Ta
il lamps 1
Turn signal indicator: PY 21W bulb
2 Reversing light: W 16W bulb Light and sight
137

Changing
the front bulbs (vehicles with halo‐
ge n headla mps) Fi
tting/ removing the co ver on the front
wheel ar ch
Re quirements:
R The lighting sy stem is switched off.
R The appropriate front wheel is turned
in wa rds. #
Toremo ve:turn co ver1 tothe left and
re mo veit from the wheel ar chliner. #
Toinstall: insert co ver1 into the wheel
ar ch liner and turn it totheright until it
engages.
Re placing bulbs in the halo gen headla mp
Re quirements:
R Dipped beam: a H7 55 W light bulb is availa‐
ble.
R Highbeam: a H7 55 W light bulb is available. 1
Dipped beam housing co ver
2 Main beam housing co ver #
Switch the lighting sy stem off. #
Remo vethe co ver in the front wheel ar ch
( / page138). #
Turn there leva nt housing co ver anti-clock‐
wise and remo veit. #
Turn the soc ket anti-clo ckwise 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. #
Replace the co ver in the front wheel ar ch
( / page138). Changing
there ar bulbs (vehicles with halo‐
ge n headla mps) Re
placing the tail lamp bulbs #
Due totheir locations, ha vethe bulbs forthe
turn signal light and reve rsing light changed
at a qualified specialist workshop. 13 8
Light and sight

Wi
ndscreen wipers and windscreen washer
sy stem Switching
the windscreen wipers on/off 1
gWindsc reen wipers off
2 Ä Automatic wiping, normal
3 Å Automatic wiping, frequent 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 Wipes 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 tothech ange posi‐
tion #
Switch the ignition on and switch off again
immediatel y. #
Within around 15seconds, press button
î onthe combination switch for appro x‐
ima tely thre e seconds (/ page139).
The wiper arms will mo veinto thech ange
position.
Re moving the wiper blades #
Foldthe wiper arms away from the wind‐
screen. Light and sight
13 9