warning MERCEDES-BENZ SLC 2017 Owners Manual

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 132).
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 275).X
Shift th et ra nsmission to position P .X
Turn th ef ront wheels toward st he curb.X
Consult aq ualified specialist workshop .182
Display messages
On-boar dc omputer an dd isplays

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

Tires Display messages
Possible causes/consequence sa nd P Solutions
Check Tire Pressure
Soon Canad ao nly:
The tire pressure loss warning system ha sd et ecte das ig nificant loss
in pressure.
Aw ar ning tone also sounds.
Possibl ec auses: R
yo uh av ec hange dt he positions of the wheels and tire sori nstalled
new wheels and tires R
the tire pressure in one or mor et ire sh as dropped
G WARNING
Tire pressures tha ta re too lo wp os et he following hazards:R
the ym ay burst, especially as the load and vehicl es peed increaseR
the ym ay wear excessivel ya nd/or unevenly, which ma yg reatly
impai rt ire traction. R
the drivin gc haracteristics, as well as steerin ga nd braking ,m ay be
greatl yi mpaired
There is ar is kofana ccident.X
Stop the vehicl ew it hou tm ak ing any sudden steerin gorb raking
maneuvers. Pa ya ttentio ntot he traffi cc onditions as yo udos o.X
Secure the vehicl ea gain st rolling away ( Y
page 131).X
Check the tire sa nd ,ifn ecessary ,f ollo wt he instructions for af lat
tire ( Y
page 241). X
Check the tire pressures and ,ifn ecessary ,c orrect the tire pressure.X
Restart the tire pressure loss warning system when the tire pres-
sure is correct ( Y
page 262).
Check Tire Pressure
The nR estar tR un
Fla tI ndicator Canad ao nly:
The tire pressure loss warning system generated ad isplay message
and ha sn ot been restarted since. X
Set the correct tire pressure in al lf ou rt ires.X
Restart the tire pressure loss warning system ( Y
page 262).
Run Fla tI ndicator
Inoperative Canad ao nly:
The tire pressure loss warning system is faulty. X
Visi taq uali fied specialis tw or kshop.
Please Correct Tire
Pressure USA only:
The tire pressure is too lo winatl east one of the tires, or the tire
pressure differenc eb et ween the wheels is too great.X
Check the tire pressures at the next opportunity ( Y
page 262).X
If necessary ,c orrect the tire pressure.X
Restart the tire pressure monitor ( Y
page 264).196
Displa ym essages
On-boar dc omputer an dd isplays

and warning lamps only indicat eam alfunctio nift he yl ight up or flas ha fter starting th ee ngine or
whilst driving.
Safety
Seat belts Warning/
indicator
lamp Q Signa lt yp e
Possible causes/consequences and P Solutions

Safety systems Warning/
indicator
lamp Q Signal type
Possible causes/consequences and P Solutions
'M
Q ' (USA only) or M (Canada only): the red brake system warning lamp is
lit while the engine is running. Aw arning tone also sounds.
G WARNING
There is not enough brake fluid in the brake fluid reservoir.
The braking effect may be impaired.
There is ar isk of an accident.X
Pull over and stop the vehicle safely as soon as possible, paying attention to road
and traffic conditions. Do not continue driving under any circumstances. X
Secure the vehicle against rolling away ( Y
page 131).X
Do not add brake fluid. Adding more will not correct the malfunction. X
Consult aq ualified specialist workshop.X
Observe the additional display messages in the multifunction display.
'
Q USA only: the red brake system warning lamp is lit while the engine is running.
The multifunction display also shows ad isplay message with the & symbol.
The brake pads/linings have reached their wear limit. X
Visit aq ualified specialist workshop.
%
Q The yellow ABS warning lamp is lit while the engine is running.
ABS (anti-lock braking system) is malfunctioning.
If there is an additional warning tone, the EBD (electronic brake force distribution)
is malfunctioning.
Other driving systems and driving safety systems may also malfunction.
G WARNING
The brake system continues to function normally, but without the functions listed
above. The front and rear wheels could therefore lock if you brake hard, for exam-
ple.
The steerability and braking characteristics may be severely affected. The braking
distance in an emergency braking situation can increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident. X
Observe the additional display messages in the multifunction display. X
Drive on carefully. X
Visit aq ualified specialist workshop immediately.
If the ABS control unit is faulty, there is also ap ossibility that other systems, such
as the navigation system or the automatic transmission, will not be available.204
Warning and indicator lamps
On-board computer and displays

Warning/
indicator
lamp Q Signal type
Possibl ec auses/consequences and P Solutions
'M

Warning/
indicator
lamp Q Signal type
Possibl ec auses/consequences and P Solutions