light MERCEDES-BENZ CLA 2018 Repair Manual

R
Distance Pilo tD ISTRONICR
ASSYST PLU Ss ervic ei nterva ld isplay
Switchin gt he additional speedometer
on/off If the additional speedomete riss wi tched on,
the spee diss hown in the status ba rint he mul-
tifunctio nd isplay instea doft he outside tem-
perature.
The spee dd isplay is invers etot he speedome-
ter. X
Press the Y or e button on the steering
whee ltos elect the Sett. menu.X
Press the d or c button to select the
Instrumen tC luster submenu.X
Press v to confirm.X
Press the d or c button to select the
Speedometer [km/h] or Speedometer
[mph] function.
Yo uw il ls ee the selecte ds etting: On or Off .X
Press the v button to save the setting.
Selecting permanent display The Permanent Display: functio na llow sy ou
to choose whether the multifunctio nd isplay
always shows the outside temperatur eort he
speed.
The spee dd isplay is invers etot he speedome-
ter. X
Press the Y or e button on the steering
whee ltos elect the Sett. menu.X
Press the d or c button to select the
Instr. Cluster submenu.X
Press v to confirm.X
Press the d or c button to select the
Permanent Display: function.
The current setting, Outsid eT emperature
or Speedometer [km/h] / Speedometer
[mph] ,a ppears .X
Press the v button to save the setting.
Lights
Switchin gt he daytime runnin gl amps on/
off
Thi sf un ctio ni sn ot availabl einC an ada.X
Press the Y or e button on the steering
whee ltos elect the Sett. menu.X
Press the d or c button to select the
Light submenu. X
Press v to confirm. X
Press the d or c button to select the
Daytim eR unnin gL ights function.
If the Daytime Running Lights functio nh as
been switched on, the multifunctio nd isplay
shows the cone of light and the

Comfort Switching th ef old-in mirror sw hen lock-
ing feature on/off This function is only available in Canada.
This function is only available when th ev ehicle is
equipped wit ht he electrical fold-in function.
When you activat et he Auto. Mirror Folding
function ,t he exterior mirror sa re folded in when
th ev ehicle is locked. If you unlock th ev ehicle
and then open th ed river' sorf ront-pa ssenger
door ,t he exterior mirror sf old out again.
If you have switched on the Auto. Mirror
Folding function and you fold in th ee xteri or
mirror su sin gt he butto nont he door
( Y
page 97), they will no tf old out automatically.
The exterior mirror sc an then only be folded out
usin gt he butto nont he door.X
Press the Y or e butto nont he steering
wheel to selec tt he Sett. menu.X
Press the d or c butto ntos elec tt he
Convenience submenu.X
Press v to confirm.X
Press the d or c butto ntos elec tt he
Auto. Mirror Folding function.
If the Auto. Mirror Folding function is
switched on ,t he multifunction display shows
th ee xteri or mirror in orange.X
Press the v butto ntos ave th es etting.
Restoring th ef ac tor ys ettingsX
Press the Y or e butto nont he steering
wheel to selec tt he Sett. menu.X
Press the d or c butto ntos elec tt he
Factor yS etting submenu.X
Press v to confirm.
The Reset All Settings? function
appears. X
Press the d or c butto ntos elect No or
Yes .X
Press the v butto ntoc onfir mt he selec-
tion.
If you have selected Yes
,t he multifunction
display shows ac onfirmation message.
For safety reasons, the Daytim eR unning
Lights function in the Light submen uiso nl y
reset if th ev ehicle is stationary. AMG men u( Mercedes-AM Gv ehicles)
Warm-up
C
Digital speedometer D
Gear indicator

Display messages
Possible causes/consequences and P Solutions
The yellow $ warning lamp and th er ed I (US Ao nl y) or $
(Canada only) indicator lamp ligh tu p.
The electric parking brak eism alfunctioning .
To release: X
Switc ho ff th ei gnition and tur nitb ac ko n.X
Releas et he electric parking brak em anually.
or X
Releas et he electric parking brak ea utomatically ( Y
page 142).
If th ee lectric parking brak es ti ll canno tber eleased:X
Do no td rive on .X
Consult aq ualified specialist workshop .
The red I (US Ao nl y) or $ (Canada only) indicator lamp flashes
and th ey ellow $ warning lamp lights up.
The electric parking brak eism alfunctioning .
To release: X
Switc ho ff th ei gnition and tur nitb ac ko n.X
Releas et he electric parking brak em anually.
To apply : X
Switc ho ff th ei gnition and tur nitb ac ko n.X
Apply th ee lectric parking brak em anually.
If th er ed I (US Ao nl y) or $ (Canada only) indicator lamp con-
tinue stof lash: X
Do no td rive on .X
Secur et he vehicl ea gainst rollin ga way ( Y
page 309).X
Shift th et ra nsmission to position E .X
Turn th ef ront wheels toward st he curb.X
Consult aq ualified specialist workshop .Display messages 19 5
On-boar dc omputer an dd isplays Z

Display messages
Possible causes/consequences and P Solutions
The yellow $ warning lamp lights up. The red I (US Ao nl y)
or $ (Canada only) indicator lamp flashes for about te ns econds
after th ee lectric parking brak eh as been applie dorr eleased. It then
goe so ut or remain sl it .
The electric parking brak eism alfunctioning .X
Switc ho ff th ei gnition and tur nitb ac ko n.X
Apply th ee lectric parking brake.
If it is no tp ossibl etoe ng age th ee lectric parking brake:X
Shift th et ra nsmission to position E .X
Visit aq ualified specialist workshop .
If it is no tp ossibl etor elease th ee lectric parking brak em anually:X
Releas et he electric parking brak ea utomatically ( Y
page 142).
If th ee lectric parking brak es ti ll canno tber eleased:X
Consult aq ualified specialist workshop .
The yellow $ warning lamp lights up. If you manually apply or
release th ee lectric parking brake, th er ed I (US Ao nl y) or $
(Canada only) indicator lamp flashes .
The electric parking brak eism alfunctioning .Itisn ot possibl etoa pply
th ee lectric parking brak em anually.X
Shift th et ra nsmission to position E ,ast he electric parking
brak eisn ot applie da utomatically.X
Visit aq ualified specialist workshop .
I (US A
only)
$ (Canada
only)
Parkin gB rake Inop‐
erativ e The yellow $ warning lamp lights up. The red I (US Ao nl y)
or $ (Canada only) indicator lamp flashes for about te ns econds
after th ee lectric parking brak eh as been applie dorr eleased. It then
goe so ut or remain sl it .
The electric parking brak eism alfunctioning ,e .g .b ecause of over-
voltag eoru ndervoltage. X
Remove th ec aus ef or th eo vervoltage or undervoltage, e.g. by
charging th eb attery or restarting th ee ng ine.X
Engage or release th ee lectric parking brake.
If it remain si mpossible to apply or release th ee lectric parking brake:X
Switc ho ff th ei gnition and tur nitb ac ko n.X
Engage or release th ee lectric parking brake.
If th ee lectric parking brak es ti ll canno tber eleased:X
Consult aq ualified specialist workshop .
If th ee lectric parking brak es ti ll canno tbea pplied:X
Visit aq ualified specialist workshop .196
Display messages
On-boar dc omputer an dd isplays

Display messages
Possible causes/consequences and P Solutions
The yellow $ warning lamp lights up and th er ed I (US Ao nl y)
or $ (Canada only) indicator lamp flashes .
It is no tp ossibl etoa pply th ee lectric parking brak em anually.X
Shift th et ra nsmission to position E .X
Visit aq ualified specialist workshop .
' (US Ao nl y)
M (Canada only)
Check Brake Fluid
Level There is no te no ugh brak ef lui dint he brak ef luid reservoir .
Aw arning tone sounds. The ' (US Ao nl y) or M (Canada only)
warning lamp sint he instrumen tc luste rm ay also ligh tu p.
G WARNIN G
The braking effec tm ay be impaired.
There is ar is kofana ccident.X
Pull ove ra nd stop th ev ehicl es afely as soo nasp ossible, payin g
attention to roa da nd traffic conditions. Do no tc ontinue drivin g
under any circumstances. X
Secur et he vehicl ea gainst rollin ga way ( Y
page 141).X
Consult aq ualified specialist workshop .X
Do no ta dd brak ef luid .T his does no tc orrect th em alfunction .
& Check Brake Pad Wea r The brak ep ads/linings hav er eached their wear limit.X
Visit aq ualified specialist workshop .
S Inoperative On eorm or em ain features of th em brace system are malfunctioning .X
Visit aq ualified specialist workshop .
Active Brake Assist
Functions Currently
Limite dS ee Opera‐
tor's Manual Active Brake Assis tist em porarily inoperative.
Possibl ec auses are: R
The radar sensor system is temporarily inoperative, e.g. due to
electromagneti cr adiation emitted by nearby TV or radi os ta tion so r
other source sofe lectromagneti cr adiation .R
The system is outside th eo perating temperature range.R
The on-boar dv oltag eist oo low.
Whe nt he causes state da bov enol onger apply, th ed isplay message
disappears.
Active Brake Assis tiso perational again .
If th ed isplay message does no td isappear :X
Pull ove ra nd stop th ev ehicl es afely as soo nasp ossible, payin g
attention to roa da nd traffic conditions.X
Secur et he vehicl ea gainst rollin ga way ( Y
page 141).X
Restart th ee ng ine.
Active Brake
Assist : System Inop‐
erativ e Active Brake Assis tisu navailable due to am alfunction .S ituation -
dependen tb raking assistanc em ay also hav ef ailed.X
Visit aq ualified specialist workshop immediately. Display messages 19 7
On-boar dc omputer an dd isplays Z

Display messages
Possible causes/consequences and P Solutions
Radar Sensor s Dirty
See Operator' sM an ‐
ual The radar sensor system is malfunctioning .
Possibl ec auses are: R
Dirt on sensor sR
Heavy rain or snow R
Whe nd rivin goni nter-urban roads without traffic or infrastructure,
e.g. in desert-like area s
At least on ed rivin gs ystem or drivin gs afet ys ystem is malfunctioning
or is temporarily unavailable :R
Active Brake Assis tR
Distanc eP ilo tD ISTR ONI C
Aw arning tone also sounds.
Once th ec aus eoft he problem is no longer present, th ed rivin ga nd
drive safet ys ystems will be available again .T he display message dis-
appears.
If th ed isplay message does no td isappear :X
Pull ove ra nd stop th ev ehicl es afely as soo nasp ossible, payin g
attention to roa da nd traffic conditions.X
Secur et he vehicl ea gainst rollin ga way ( Y
page 141).X
Switc ho ff th ee ng ine.X
Clean all sensor s( Y
page 265).X
Restart th ee ng ine.
The display message disappears.
u SRS Malfunction Ser ‐
vic eR equired The restrain ts ystem is malfunctioning .T he u warning lamp also
lights up in th ei nstrumen tc luster.
G WARNIN G
The air bags or Emergency Tensioning Devices may either be triggered
unintentionally or, in th ee vent of an accident, may no tbet ri ggered .
There is an increased ris kofi njury.X
Visit aq ualified specialist workshop immediately.
Fo rf urther information about th er estrain ts ystem, see ( Y
page 40) .
u Front Lef tM alfunc‐
tio nS ervic e
Required or Front
Right Malfunction
Servic eR equired The restrain ts ystem is malfunctioning at th ef ront on th el ef torr ight .
The u warning lamp also lights up in th ei nstrumen tc luster.
G WARNIN G
The air bags or Emergency Tensioning Devices may either be triggered
unintentionally or, in th ee vent of an accident, may no tbet ri ggered .
There is an increased ris kofi njury.X
Visit aq ualified specialist workshop immediately.198
Display messages
On-boar dc omputer an dd isplays

Display messages
Possible causes/consequences and P Solutions
u Rea rL ef tM alfunc‐
tio nS ervic e
Required or Rea r
Right Malfunction
Servic eR equired The rear left-han dorr ight-hand restrain ts ystem is malfunctioning .
The u warning lamp also lights up in th ei nstrumen tc luster.
G WARNIN G
The air bags or Emergency Tensioning Devices may either be triggered
unintentionally or, in th ee vent of an accident, may no tbet ri ggered .
There is an increased ris kofi njury.X
Visit aq ualified specialist workshop immediately.
u Lef tS id eC urtai n
Airbag Malfunction
Servic eR equired or
Right Sid eC urtai n
Airbag Malfunction
Servic eR equired The left-han dorr ight-hand window curtai na ir bag is malfunctioning .
The u warning lamp also lights up in th ei nstrumen tc luster.
G WARNIN G
The lef torr ight window curtai na ir bag may either be triggered unin-
tentionally or, in th ee vent of an accident, may no tbet ri ggered .
There is an increased ris kofi njury.X
Visit aq ualified specialist workshop immediately. Display messages 19 9
On-boar dc omputer an dd isplays Z

Display messages
Possible causes/consequences and P Solutions
If th ec onditi on sa re no tf ulfilled ,t he system is no to perating correctly.X
Visit aq ualified specialist workshop immediately.
Fo rf urther information about th eO cc upant Classification System, see
( Y
page 48).
Lights
i Vehicles wit hL ED bulbs in th el igh tc lusters :
The display message for th ec orre spondin gl amp only appear sw hen all of th eL ED sint he lamp
hav ef ailed.
Display messages
Possible causes/consequences and P Solutions
I Check Lef tC orner ‐
ing Light or Check
Right Cornering
Light The lef torr ight-hand cornering ligh tisd efective.X
Chec kw hether you are permitte dtor eplace th eb ulb yourself
( Y
page 104).
or X
Visit aq ualified specialist workshop .
I Check Lef t Low Bea m
or Check Right Low
Bea m The lef torr ight-hand low-beam headlamp is defective. X
Chec kw hether you are permitte dtor eplace th eb ulb yourself
( Y
page 104).
or X
Visit aq ualified specialist workshop .
I Check Rea rL ef t
Tur nS ignal or
Check Rea rR ight
Tur nS ignal The rear left-han dorr ear right-hand tur ns ignal is defective.X
Chec kw hether you are permitte dtor eplace th eb ulb yourself
( Y
page 104).
or X
Visit aq ualified specialist workshop .
I Check Front Lef t
Tur nS ignal or
Check Front Right
Tur nS ignal The fron tl eft-han dorf ront right-hand tur ns ignal is defective.X
Chec kw hether you are permitte dtor eplace th eb ulb yourself
( Y
page 104).
or X
Visit aq ualified specialist workshop .
I Check Lef tM irror
Tur nS ignal or
Check Right Mirror
Tur nS ignal The tur ns ignal in th el eft-han dorr ight-hand exterio rm irror is defec -
tive. X
Visit aq ualified specialist workshop .
I Check Center Brake
Lam p The high-mounte db rak el amp is faulty.X
Visit aq ualified specialist workshop .202
Display messages
On-boar dc omputer an dd isplays

Display messages
Possible causes/consequences and P Solutions
I Check Lef tB rake
Lam p or Check Right
Brake Lam p The lef torr ight-hand brak el amp is defective.X
Chec kw hether you are permitte dtor eplace th eb ulb yourself
( Y
page 104).
or X
Visit aq ualified specialist workshop .
I Check Lef t Tai l and
Brake Lamps or
Check Right Tai l
and Brake Lamps The lef torr ight-hand tai ll amp/brake lamp is defective.X
Chec kw hether you are permitte dtor eplace th eb ulb yourself
( Y
page 104).
or X
Visit aq ualified specialist workshop .
I Check Lef t Hig h Bea m
or Check Right
Hig hB ea m The lef torr ight-hand high beam is defective. X
Chec kw hether you are permitte dtor eplace th eb ulb yourself
( Y
page 104).
or X
Visit aq ualified specialist workshop .
I Licens eP late Lam p The lef torr ight-hand license plat el amp is faulty.X
Visit aq ualified specialist workshop .
I Rea rF og Lam p The rear fog lamp is faulty. X
Chec kw hether you are permitte dtor eplace th eb ulb yourself
( Y
page 104).
or X
Visit aq ualified specialist workshop .
I Check Front Lef t
Parkin gL am p or
Check Front Right
Parkin gL am p The fron tl ef torf ront right parking or standing lamp is defective.X
Chec kw hether you are permitte dtor eplace th eb ulb yourself
( Y
page 104).
or X
Visit aq ualified specialist workshop .
I Backup Light The backup lamp is defective. X
Chec kw hether you are permitte dtor eplace th eb ulb yourself
( Y
page 104).
or X
Visit aq ualified specialist workshop .
I Check Lef tT ai l
Lam p or Check Right
Tai lL am p The lef torr ight-hand tai ll amp is defective.X
Visit aq ualified specialist workshop .Display messages 20 3
On-boar dc omputer an dd isplays Z

Display messages
Possible causes/consequences and P Solutions
I Check Front Lef t
Sidemarke rL am p or
Check Front Right
Sidemarke rL am p The fron tl eft-han dorf ront right-hand side marke rl amp is faulty.X
Visit aq ualified specialist workshop .
I Check Rea rL ef t
Sidemarke rL am p or
Check Rea rR ight
Sidemarke rL am p The rear left-han dorr ear right-hand side marke rl amp is faulty.X
Visit aq ualified specialist workshop .
I Check Lef tD aytim e
Runnin gL ight or
Check Right Daytim e
Runnin gL ight The lef torr ight-hand daytime runnin gl amp is faulty.X
Chec kw hether you are permitte dtor eplace th eb ulb yourself
( Y
page 104).
or X
Visit aq ualified specialist workshop .
I Malfunction See
Operator' sM anual The exterio rl ighting is malfunctioning .X
Visit aq ualified specialist workshop .
I Aut oL am pF unction
Inoperative The ligh ts ensor is defective. X
Visit aq ualified specialist workshop .
I Switch Off Lights The lights are still switched on when you leav et he vehicle. Aw arning
tone also sounds. X
Turn th el igh ts witch to th e X position .
I Switch On Headlamps You are drivin gw it hl ow-beam headlamp ss witched off .X
Turn th el igh ts witch to th e X or X position .
Adaptive Highbeam
Assist Currently
Unavailable See
Operator' sM anual Adaptive Highbea mA ss is tisd eactivated and temporarily inoperative.
Possibl ec auses are: R
The windshield in th ec amera' sf ield of vision is dirty.R
Visibilit yisi mpaire dd ue to heav yr ain ,s no worf og .X
Clean th ew indshield.
If th es ystem detects that th ec amera is full yo perational again ,t he
Adaptive Highbeam Assist Now Available message is displayed.
Adaptive Highbea mA ss is tiso perational again .
Adaptive Highbeam
Assist Inoperative Adaptive Highbea mA ss is tisf aulty.X
Visit aq ualified specialist workshop .204
Display messages
On-boar dc omputer an dd isplays