warning light MERCEDES-BENZ SLC 2017 Service Manual

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 P .X
Visit aq ualified specialist workshop .
If it is no tp ossibl etor elease th ee lectric parking brake:X
Releas et he electric parking brak ea utomatically ( Y
page 132).
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 es elector lever to P ,ast he electric parking brak eisn ot
applie da utomatically. X
Visit aq ualified specialist workshop .
I (USA
only)
$ (C anada
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 .Display messages 18 3
On-boar dc omputer an dd isplays Z

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 P .X
Visit aq ualified specialist workshop .
' (USA
only)
M (C anada
only)
Check Brake Fluid
Level There is no te no ugh brak ef luid in th eb rak ef luid reservoir .
In addition ,t he ' (US Ao nl y) or M (Canada only) warning lamp
lights up in th ei nstrumen tc luste ra nd aw arning tone sounds.
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 131).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
Hav et he mbrace system checke dataq ualified specialist work-
shop.
PRE-SAFE Inopera‐
tiv e See Operator' s
Manual Importan tf unction sofP RE-SAF E ®
hav ef ailed. Al lo th er occupant
safet ys ystems ,e .g .a ir bags ,r emain available.X
Visit aq ualified specialist workshop immediately.
Active Brake Assist
Functions Currently
Limite dS ee Opera‐
tor's Manual Active Brake Assis tist em porarily inoperative.
Possibl ec auses are: R
th er adar sensor system is temporarily inoperative, e.g. due to elec -
tromagneti cr adiation emitted by nearby TV or radi os ta tion so r
other source sofe lectromagneti cr adiationR
th es ystem is outside th eo perating temperature rangeR
th eo n-bo ar 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 131).X
Restart th ee ng ine.184
Display messages
On-boar dc omputer an dd isplays

Display messages
Possible causes/consequences and P Solutions
Active Brake Assist
Functions Limite d
See Operator' sM an ‐
ual Active Brake Assis tisu navailable due to am alfunction .X
Visit aq ualified specialist workshop .
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
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 131).X
Switc ho ff th ee ng ine.X
Clean all sensor s( Y
page 240).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 37) .
u Front Lef tM alfunc‐
tio nS ervic e
Required or Fr on t
Right Malfunction
Servic eR equired The restrain ts ystem has malfunctioned 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. Display messages 18 5
On-boar dc omputer an dd isplays Z

Display messages
Possible causes/consequences and P Solutions
u Lef tS id eC urtai n
Airbag Malfunction
Servic e
Required or Ri gh t
Sid e Curtai n Airbag
Malfunction Servic e
Required There is am alfunction in th el eft-han da nd/o rr ight-hand head bag.
The u warning lamp also lights up in th ei nstrumen tc luster.
G WARNIN G
The lef torr ight head bag 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.186
Display messages
On-boar dc omputer an dd isplays

General notes The multimedia system section in this manual
describes the basi cp rinciples for operation.
More information can be found in the Digital
Operator's Manual.
Important safety notes
G WARNING
If you operate information systems and com-
municatio ne quipment integrated in the vehi-
cle whil ed riving, you wil lbed istracted from
traffic conditions. You could also lose control
of the vehicle .T here is ar isk of an accident.
Only operate the equipment when the traffic
situation permits. If you are not sure that this
is possible, park the vehicle paying attention
to traffic conditions and operate the equip-
ment when the vehicle is stationary.
You must observe the lega lr equirements for the
country in which you are currently driving when
operating the multimedia system.
The multimedia system calculates the route to
the destination withou tt aking the following into
account, for example: R
traffic lights R
stop and yield signs R
parking or stopping restrictions R
road narrowing R
other road and traffic rule sa nd regulations
The multimedia system may give incorrect nav-
igation recommendations if the actual street/
traffic situation does not correspond with the
digital map's data.
For example: R
ad iverted route R
the road layout or the direction of ao ne-way
street has been changed
For this reason, you must alway so bserve road
and traffic rule sa nd regulations during your
journey. Roa da nd traffic rule sa nd regulations
alway sh ave priority over multimedia system
driving recommendations.
Navigation announcements are intended to
direct you whil ed riving withou td iverting your
attention from the road and driving. Please alway su se this feature instead of con-
sulting the map display for directions. Looking
at the icons or map display can distract you from
traffic conditions and driving, and increase the
risk of an accident.
This equipment complies with FCC radiation
exposure limits set forth for uncontrolled equip-
ment and meets the FCC radi of requency (RF)
Exposure Guidelines in Supplement CtoO ET65.
This equipment has very low level sofRFe nergy
that is deeme dtoc omply withou tm aximum
permissive exposure evaluation (MPE). How-
ever, it is recommended to insta ll it at ad ista
nce
of at least 8i nches (approx. 20 cm) betwee nt he
radiation source and ap erson's body (not
including limb ss uch as hands, wrists, feet and
legs).
G WARNING
Modifications to electronic components, their
software as wel lasw iring can impair their
function and/or the function of other net-
worked components. In particular, systems
relevant to safety could also be affected. As a
result, these may no longer function as inten-
ded and/or jeopardize the operating safety of
the vehicle .T here is an increase dr isk of an
accident and injury.
Never tamper with the wiring as wel lase lec-
tronic components or their software .Y ou
shoul dh ave all work to electrica la nd elec-
tronic equipment carried out at aq ualified
specialist workshop.
If you make any changes to the vehicle elec-
tronics, the general operating permit is ren-
dered invalid.
Function restrictions
For safety reasons, some functions are restric-
ted or unavailable whil et he vehicle is in motion.
You wil ln otice this, for example, because either
you wil ln ot be abl etos elect certain menu items
or am essag ew il la ppear to this effect.Function restrictions 211
Multimedia system Z

X
To open: slid ec over D back.X
To remove the insert: slid ec atch C inwards
on both side sint he direction of the arrow.X
Remove the cup holde ri nsert upwards.X
To re-install the insert: place the insert in
the stowag es pace.X
Slide catch C outwards in the direction of the
arrow unti lite ngages.
Yo uc an remove the cup holde ri nsert for clean-
ing .C lean with clear, lukewarm water only.
Bottl eh olderObserve the "Important safety notes "i nt he
"Stowage compartments" section ( Y
page 217).
! Make sure tha ta ny bottle sw eighin gm ore
tha n1 .1 lb(0.5 kg) tha ta re stored in the bottle
holder, res tont he vehicl ef loor. The bottle
holde rc ould otherwise be damaged.
X
Press the outer edge of button C and slid ei n
the direction of the arrow unti lt he bottle fits
into the opening. X
Insert the bottle into the bottle holder.
The bottle holde riss ui tabl ef or bottle sw it ha
capacity of 25 fl. oz. (0.7 l) to 54 fl. oz. (1.5 l).
The bottle holde rd oe sn ot secur et he bottles; it
merel yp revents the mf ro mt ipping over.
Sun visors
Overview
G WARNING
If the mirro rc ove roft he vanity mirro risf olded
up when the vehicl eisinm otion, yo uc ould be blinded by incident light. There is ar is kofa n
accident.
Alway sk ee pt he mirro rc ove rf olde dd ow n
whil ed riving.
C
Mirro rl ig htD
Bracket

Cigarett el ighter
G WARNING
You can burn yourself if you touch th eh ot
heating elemen tort he socke toft he cigarette
lighter.
In addition ,f lammable material sc an ignite if:R
th eh ot cigarette lighter fallsR
ac hi ld hold st he hot cigarette lighter to
objects, for example
Ther eisar is koff ir ea nd injury.
Always hold th ec igarette lighter by th ek no b.
Always mak es ure that th ec igarette lighter is
out of reac hofc hi ldren. Never leave children
unsupervised in th ev ehicle.
Your attentio nm ust always be focused on the
traffic conditions. Only use th ec igarette lighter
when road and traffic condition sp ermit.X
Turn th eS ma rtKey to position 2 in th ei gnition
loc k( Y
page 115).X
To open: push th el ower sectio nofc over C .
The ashtray opens. X
Press in cigarette lighter D .
Cigarett el ighter D will pop out automatically
when th eh eating elemen tisr ed-hot.
12 Vs ockets
General notes X
Turn th eS ma rtKey to position 1 in th ei gnition
loc k( Y
page 115).
The sockets can be used for accessorie sw it ha
maximum draw of 18 0W( 15 A). Accessories
include suc hi tems as chargers for mobile
phones. If you use th es ockets for lon gp eriods when the
engin eiss witched off ,t he battery may dis-
charge.
i An emergenc yc ut-out ensure st ha tt he on-
boar dv oltage does no td ro pt oo low. If th eo n-
boar dv oltage is to ol ow, th ep ower to the
sockets is automaticall yc ut .T his ensures
that there is sufficient power to start the
engine.
Socket in th ef ro nt center console X
To open: push th el ower sectio nofc over C .
The stowage compartmen to pens.X
Lif tupt he cover of socket D .
mbrace
General notes You must have al icens ea greement to activate
th em brace service. Mak es ure that your system
is activated and operational. To log in, pres st he

X
Reac hi nt ot he gap, pull hoo dc atch handle D
up and lift hoo d C .
If you lift th eh oo dbya pproximately 15 in
(40 cm), th eh oo diso pened and held open
automatically by th eg as-filled strut .
Closin gt he hoodX
Lowe rt he hoo da nd let it fall from ah eight of
approximately 8in( 20 cm).X
Chec kt ha tt he hoo dh as engage dp roperly.
If th eh oo dc an be raised slightly, it is no t
properly engaged. Open it again and close it
wit hal ittl em or ef orce .
Engine oil
Notes on th eo il levelDependin gony our driving style, th ev ehicl e
consumes up to 0. 9USq t( 0.8 liters )ofo il pe r
60 0m iles (1,000 km). Th eo il cons umption may
be higher than th is when th ev eh icle is ne wori f
you frequently driv eath igh engin es peeds.
Depen din gont he engine, th eo il dipst ick may be
in ad ifferent location.
When checking th eo il leve l:R
park th ev eh icle on al eve ls urfaceR
th ee ng in es hould be swit ched off for appr ox-
imately fiv em in ute sift he engin eisatn orma l
operatin gt em pe ratureR
if th ee ng in eisn ot at normal operatin gt em -
perature, e.g .ift he engin ew as on ly started
brie fly, wait about 30 minute sb efore carrying
out the measurement Checking the oil level using the oil dip-
stick
G WARNING
Certain component sint he engine compart-
ment ,s uch as the engine, radiator and parts
of the exhaust system, can become very hot.
Workin gint he engine compartment poses a
risk of injury.
Where possible, let the engine cool down and
touch only the component sd escribed in the
following.
Example X
Pull oil dipstick C out of the dipstick guide
tube. X
Wipe off oil dipstick C .X
Slowly slide oil dipstick C into the guide tube
to the stop, and take it out again.
If the level is between MIN mark

! Make sure that: R
the side windows and the roof are com-
pletely closed R
the climate control blower is switched off R
the windshiel dw iper switch is at position 0
The vehicle could otherwise be damaged.
You can wash the vehicle in an automatic car
wash from the very start.
If the vehicle is very dirty, pre-wash it before
cleaning it in an automatic car wash.
After using an automatic car wash, wipe off wax
from the windshiel da nd the wiper blades. This
will prevent smears and reduce wiping noises
caused by residue on the windshield.
Washing by hand In some countries, washing by hand is only
allowed at speciall ye quipped washing bays.
Observe the legal requirements in each country. X
Do not use hot water and do not wash the
vehicle in direct sunlight. X
Use as oft sponge to clean.X
Use am ild cleaning agent, such as ac ar
shampoo approved by Mercedes-Benz. X
Thoroughly hose down the vehicle with ag en-
tle jet of water. X
Do not point the water jet directly towards the
air inlet. X
Use plenty of water and rinse out the sponge
frequently. X
Rinse the vehicle with clean water and dry
thoroughly with ac hamois.X
Do not let the cleaning agent dry on the paint-
work.
Carefully remove all deposits of road salt as
soon as possible when driving in winter.
Powe rw ashers
G WARNING
The water jet from ac ircular jet nozzle (dirt
blasters) can cause invisible exterior damage
to the tires or chassis components. Compo-
nent sd amage dint his way may fail unexpect-
edly .T here is ar isk of an accident.
Do not use power washers with circular jet
nozzles to clean the vehicle. Have damaged tires or chassis component sr eplaced imme-
diately.
! Alway sm aintain ad istance of at least
11.8 in (30 cm) between the vehicle and the
power washer nozzle. Information abou tt he
correct distance is available from the equip-
ment manufacturer.
Move the power washer nozzle around when
cleaning your vehicle.
Do not aim directly at any of the following: R
Tires R
Door gaps, roof gaps, joints, etc. R
Soft top (Designo retractable hardtop) R
Electrical components R
Battery R
Connectors R
Lights R
Seals R
Trim R
Ventilation slots
Damaged seals or electrical component sc an
lead to leaks or failures.
! Do not use high-pressure cleaners if the
tank recess is open while you clean it. This
can cause damage to the seals or other com-
ponents.
Cleaning the paintwork
! Do not affix: R
stickers R
films R
magnetic plates or simila ri tems
to painted surfaces. You could otherwise
damage the paintwork.
Scratches, corrosive deposits, areas affected by
corrosion and damage caused by inadequate
care cannot always be completely repaired. In
such cases, visit aq ualified specialist workshop. X
Remove dirt immediately ,w here possible,
while avoiding rubbing too hard. X
Soak insect remains with insect remover and
rinse off the treated areas afterwards. X
Soak bird droppings with water and rinse off
the treated areas afterwards. X
Remove coolant, brake fluid, tree resin, oils,
fuels and greases by rubbing gently with a Care 237
Maintenance and care Z

cloth soaked in petroleum ethe rorl ig hter
fluid. X
Use tar remover to remove tar stains. X
Use silicone remover to remove wax.
If water no longer forms "beads" on the paint
surface ,u se the paint care products recommen-
ded and approved by Mercedes-Benz. Thi sist he
case approximately every three to five months,
depending on the climate conditions and the
care product used.
If dirt ha sp enetrate dt he paint surface or if the
paint ha sb ecome dull ,t he paint cleane rr ecom-
mended and approved by Mercedes-Benz
shoul dbeu se d.
Do not us et hese care products in the su noro n
the hoo dw hile the hoo dish ot.X
Use as ui tabl et ouch-up stick, e.g. MB Touch-
Up Stick, to repai rs light damag etot he paint-
work quickl ya nd provisionally.
Matte finish care
! Neve rp olish the vehicle or the light alloy
wheels. Polishing causes the finish to shine.
! The following may cause the paint to
become shiny and thus reduce the matte
effect: R
strong rubbing of the paintwork with
unsuitabl em aterialsR
frequent us eofa ut omatic car washesR
washing the vehicle in direct sunlight
! Neve ru se paint cleaner, buffing or polishing
products, or gloss preserver, e.g. wax. These
products are only suitabl ef or high-gloss sur-
faces. Their us eonv ehicle sw it hm atte finish
lead stoc onsiderable surface damag e( shiny,
mottle da reas).
Alway sh av ep ai ntwork repairs carrie do ut at a
qualified specialist workshop.
! Do not us ew as hp rograms with ah ot wax
treatment under any circumstances.
Observe these notes if your vehicle ha sac lear
matte finish. Thi sw il lh el py ou to avoid damage
to the paintwork du etoi ncorrect treatment.
These notes also appl ytol ig ht alloy wheel sw it h
ac lear matte finish.
i The vehicle shoul dp referabl ybew as he db y
hand using as oft sponge, car shampo oa nd
plenty of water. i Use only insect remover and car shampoo
from the rang eofr ecommended and
approved Mercedes-Benz care products.
Cleanin gt he vehicle parts
Cleanin gt he Designo retractable hard-
top
! Whe nc leaning the Designo retractable
hardtop ,u nder no circumstances use: R
Gasoline R
Thinners R
Ta rors tai nr emover R
Other organic solvents
! Remove bird droppings immediately, as
they are corrosiv ea nd can therefore cause
damag etot he Designo retractable hardtop.
Do not clean the vehicle using ap ower
washer. Do not us es harp-edge de quipment
to remove ice and snow. X
Light soiling: yo uc an clean the Designo
retractable hardtop while it is dry or rinse it
with clean water. X
Normal to heav ys oili ng: clean the Designo
retractable hardtop with ab rush and clean
water. Clea ns tains and othe rd ir tw it hab rush
and soft top cleaning agents that have been
recommended and approved by Mercedes-
Benz. Alway sb rush from front to back, fol-
lowing the grain of the fabric.
Frequent cleaning reduce st he Designo retract-
able hardtop's dirt resistance.
To restore these properties ,c lean the Designo
retractable hardtop using roof cleaning agents
that have bee nr ecommended and approved by
Mercedes-Benz.
i If yo up la ntol ea ve the vehicle outsid ef or a
long period of time ,p la ce as ui tabl ec over
over the Designo retractable hardtop.
Cleanin gt he wheels
G WARNING
The water jet from ac ircula rj et nozzle (dirt
blasters) can cause invisible exterior damage
to the tire sorc hassi sc omponents. Compo-
nents damaged in this wa ym ay fai lu nexpect-
edly. There is ar is kofana ccident.238
Care
Maintenanc ea nd care