2017 MERCEDES-BENZ SLC ECU

Display messages
Possible causes/consequences and P Solutions
Front Passenger Air ‐
bag Disabled See
Operator' sM anual The front-passenger air bag and front-passenger knee bag are deac -
tivated during th ej ou rney, although:R
an adult
or R
ap erson of th ec orre spondin gs ta tur eisont he front-passenger seat
If additional force sa re applie dtot he seat ,t he system may interpret
th eo cc upant's weigh tasl ower than it actually is.
G WARNIN G
The front-passenger fron ta ir bag and fron tp assenger knee bag may
no tbet ri ggered in th ee vent of an accident.
There is an increased ris kofi njury.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 ht he ignition off .X
Hav et he occupant get out of th ev ehicle.X
Kee pt he seat unoccupied ,c lose th ef ront-pa ssenger door and
switch on th ei gnition .X
Observ et he PASSENGER AI RB AG indicator lamp sint he center
console and th em ultifunction display and chec kt he following:
Seat unoccupied and ignition switched on :R
as elf-diagnosis is carrie do ut .T he PASSENGER AI RB AG OF Fa nd
PASSENGER AI RB AG ON indicator lamp sm us tl igh tups imulta-
neousl yf or approximately six seconds R
th eP ASSENG ER AI RB AG OF Fi ndicator lamp mus tt he nl igh tu p
a nd remain lit after th es elf-diagnosis .Ift he indicator lamp is on ,
OCS has deactivated th ef ront-pa ssenger fron ta ir bag and front-
passenger knee bag ( Y
page 45 )R
th e Front Passenger Airbag Enable dS ee Operator' s
Manual or Front Passenger Airbag Disabled See Opera‐
tor's Manual display message sm us tn ot be shown in th em ul-
tifunction display X
Wait for ap eriod of at least 60 seconds until th en eces sar ys ystem
checks hav eb een completed.X
Mak es ur et ha tt he display message sdon ot appear in th em ulti-
function display.
If these condition sa re fulfilled ,t he front-passenger seat can be occu-
pied again .W hether th eP ASSENG ER AI RB AG OF ForONi ndicator
lamp remain sl it or goe so ut depend sonh ow OCS classifies th eo cc u-
pant.
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.
Observ et he additional information on OCS ( Y
page 45).Display messages 18 7
On-boar dc omputer an dd isplays Z

Display messages
Possible causes/consequences and P Solutions
Front Passenger Air ‐
bag Enable dS ee
Operator' sM anual The front-passenger air bag and front-passenger knee bag are enabled
during th ej ou rney, eve nt ho ugh :R
ac hi ld, as mall adult or an objec tw eighing less than th es ystem' s
weigh tt hr eshold is locate dont he front-passenger seat
or R
th ef ront-pa ssenger seat is unoccupied
The system may detec to bjects or force sa pplyin ga dditional weigh to n
th es eat .
G WARNIN G
The front-passenger fron ta ir bag and th ef ront-pa ssenger knee bag
may be triggered unintentionally.
There is an increased ris kofi njury.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 ht he ignition off .X
Ope nt he front-passenger door .X
Remove th ec hi ld and th ec hi ld restrain ts ystem from th ef ront -
passenger seat .X
Mak es ur et ha tt he re are no objects on th es eat addin gtot he
weight.
The system may otherwise detec tt he additional weigh ta nd inter-
pre tt he seat occupant's weigh tasg reate rt ha nita ctually is.X
Kee pt he seat unoccupied ,c lose th ef ront-pa ssenger door and
switch on th ei gnition .X
Observ et he PASSENGER AI RB AG indicator lamp sint he center
console and th em ultifuncti on display and chec kt he fo llowing:
Seat unoccupied and ignition switched on :R
as elf-diagnosis is carrie do ut .T he PASSENGER AI RB AG OF Fa nd
PASSENGER AI RB AG ON indicator lamp sm us tl igh tups imulta-
neousl yf or approximately six seconds R
th eP ASSENG ER AI RB AG OF Fi ndicator lamp mus tt he nl igh tu p
and remain lit after th es elf-diagnosis .Ift he indicator lamp is on ,
OCS (Occupant Classification System) has disabled th ef ront -
passenger fron ta ir bag and front-passenger knee bag
( Y
page 45) R
th e Front Passenger Airbag Enable dS ee Operator' s
Manual or Front Passenger Airbag Disabled See Opera‐
tor's Manual display message sm us tn ot be shown in th em ul-
tifunction display X
Wait for ap eriod of at least 60 seconds until th en eces sar ys ystem
checks hav eb een completed.X
Mak es ur et ha tt he display message sdon ot appear in th em ulti-
function display.
If these condition sa re fulfilled ,t he front-passenger seat can be occu-
pied again .W hether th eP ASSENG ER AI RB AG OF ForONi ndicator188
Display messages
On-boar dc omputer an dd isplays

Display messages
Possible causes/consequences and P Solutions
= See Operator' sM an ‐
ual The battery is no tb ein gc ha rged.
Aw arning tone also sounds.
Possibl ec auses are: R
af ault ya lternato rR
at or np oly-V-belt R
am alfunction in th ee lectronics
! Do no tc ontinue driving. The engin ec ou ld otherwise overheat.X
Pull ove ra nd stop th ev ehicl es afely and switch off th ee ng ine, pay-
ing attention to roa da nd traffic conditions.X
Secur et he vehicl ea gainst rollin ga way ( Y
page 131).X
Consult aq ualified specialist workshop .
= Sto pV ehicl eS ee
Operator' sM anual The battery is no longer bein gc ha rged and th ec onditi on of charg ei s
to ol ow.
Aw arning tone also sounds. X
Pull ove ra nd stop th ev ehicl es afely and switch off th ee ng ine, pay-
ing attention to roa da nd traffic conditions.X
Secur et he vehicl ea gainst rollin ga way ( Y
page 131).X
Observ et he instruction sint he display message = See Oper‐
ator's Manual .X
Consult aq ualified specialist workshop .

Display messages
Possible causes/consequences and P Solutions
Lan e Keepin g Assist
Currently Unavaila‐
ble See Operator' s
Manual Lan eK eepin gA ss is tisd eactivated and temporarily inoperative.
Possibl ec auses are: R
th ew indshield in th ec amera' sf ield of vision is dirtyR
visibilit yisi mpaire dd ue to heav yr ain ,s no worf ogR
there hav eb een no lan em arking sf or an extended periodR
th el an em arking sa re worn, dark or covered, e.g. by dir tors no w
Whe nt he causes state da bov enol onger apply, th ed isplay message
disappears.
Lan eK eepin gA ss is 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
Clean th ew indshield.
Lan e Keepin g Assist
Inoperative Lan eK eepin gA ss is tisf aulty.X
Visit aq ualified specialist workshop .
Blind Spo tA ssist
Currently Unavaila‐
ble See Operator' s
Manual Blind Spot Assis tist em porarily inoperative.
Possibl ec auses are: R
function is impaire dd ue to heav yr ain or snowR
th er adar sensor system is outside th eo perating temperature rangeR
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 adiation
The yellow c indicator lamp sa lso ligh tupint he exterio rm irrors.
Whe nt he causes state da bov enol onger apply, th ed isplay message
disappears.
Blind Spot 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
Clean th es ensor s( Y
page 240).X
Restart th ee ng ine.
Blind Spo tA ssist
Inoperative Blind Spot Assis tisf aulty.
The yellow c indicator lamp sa lso ligh tupint he exterio rm irrors.X
Visit aq ualified specialist workshop .
Parkin gG uidance
Inoperative Parking Guidance is malfunctioning ( Y
page 152).X
Restart th ee ng ine.
If th em ultifunction display still shows th ed isplay message :X
Visit aq ualified specialist workshop .Display messages 19 3
On-boar dc omputer an dd isplays Z

Display messages
Possible causes/consequences and P Solutions
Parkin gG uidance
Canceled Parking Guidance is deactivated.
Possibl ec auses are: R
th ev ehicl eiss ki dding.R
th es ensor sa re dirty.R
am alfunction has occurred .
Aw arning tone also sounds. X
Reactivat eP arking Guidance later ( Y
page 152).
If th em ultifunction display does no ts ho wt he parking spac es ymbol at
speeds belo w19m ph (30 km/h):X
Clean th es ensor s( Y
page 240).X
Restart th ee ng ine.
If th em ultifunction display still does no ts ho wt he parking spac es ym-
bol at speeds belo w19m ph (30 km/h):X
Visit aq ualified specialist workshop .
Parking Guidance has been deactivated because you are no longer
followin gt he recommended path.X
Park again and ,w hile doin gs o, observ et he display message sint he
multifunction display.
Parkin gG uidance
Finished The vehicl eisp arked. Aw arning tone also sounds.
The display message disappear sa utomatically.
Distance Pilot Off Distanc eP ilo tD ISTR ONI Cisd eactivated ( Y
page 140).
If it was deactivated automatically, aw arning tone also sounds.
Distance Pilot Now
Available Distanc eP ilo tD ISTR ONI Ciso perational again after having been tem-
porarily unavailable .Y ou can no wr eactivat eD istance Pilo t
DISTRONI C( Y
page 140).
Distance Pilot Cur ‐
rently Unavailable
See Operator' sM an ‐
ual Distanc eP ilo tD ISTR ONI Cist 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.
Aw arning tone also sounds.
Whe nt he causes state da bov enol onger apply, th ed isplay message
disappears.
Distanc eP ilo tD ISTR ONI Ciso 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.194
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

Display messages
Possible causes/consequences and P Solutions
Tir eP ressure Soo n The tire pressur eino ne or mor et ir es has dropped significantly. The
whee lp osition is shown in th em ultifunction display.
Aw arning tone also sounds.
G WARNIN G
Tir ep ressures that are to ol ow pos et he followin gh azards :R
they may burst, especially as th el oad and vehicl es peed increas eR
they may wear excessivel ya nd/o ru nevenly, whic hm ay greatl y
impair tire traction .R
th ed rivin gc ha racteristics ,asw ell as steering and braking ,m ay be
greatl yi mpaire d
There is ar is kofana ccident.X
Stop th ev ehicl ew ithout making any sudden steering or braking
maneuvers .P ay attention to th et ra ffic condition sasy ou do so.X
Secur et he vehicl ea gainst rollin ga way ( Y
page 131).X
Chec kt he tires and ,ifn eces sary, follow th ei nstruction sf or af lat
tire ( Y
page 241). X
Chec kt he tire pressur e( Y
page 262).X
If necessary, correc tt he tire pressure.
Warnin gT ir eM al ‐
function The tire pressur eino ne or mor et ir es has dropped suddenly. The whee l
position is shown in th em ultifunction display.
G WARNIN G
Drivin gw it haf lat tire poses ar is koft he followin gh azards :R
af lat tire affects th ea bilit yt os te er or brak et he vehicl eR
you could lose control of th ev ehicle.R
continued drivin gw it haf lat tire will caus ee xces sive heat build-up
and possibl yaf ir e
There is ar is kofana ccident.X
Stop th ev ehicl ew ithout making any sudden steering or braking
maneuvers .P ay attention to th et ra ffic condition sasy ou do so.X
Secur et he vehicl ea gainst rollin ga way ( Y
page 131).X
Chec kt he tires and ,ifn eces sary, follow th ei nstruction sf or af lat
tire ( Y
page 241).
Tir e Press. Monito r
Currently Unavaila‐
ble Becaus et he re is interferenc ef ro mas tr on gs ource of radi ow aves, no
signals from th et ir ep ressur es ensor sa re detected. The tire pressur e
monitor is temporarily malfunctioning .X
Drive on .
The tire pressur em onitor restarts automatically as soo nast he
problem has been resolved.
TirePress .S en ‐
sor(s) Missin g There is no signal from th et ir ep ressur es ensor of on eors everal
wheels. The pressur eoft he affecte dt ir ed oes no ta ppear in th em ul-
tifunction display. X
Hav et he fault yt ir ep ressur es ensor replace dataq ualified special -
ist workshop . Display messages 19 7
On-boar dc omputer an dd isplays Z

Display messages
Possible causes/consequences and P Solutions
Servic e Required Do
Not Shift Gears
Visit Dealer You canno tc ha ng et he transmission position due to am alfunction .
Aw arning tone also sounds.
If transmission position D is selected:X
Drive to aq ualified specialist workshop without shifting th et ra ns -
mission from position D .
If transmission position R , N or P is selected:X
Notify aq ualified specialist workshop or breakdown service.
Reversing Not Possi‐
ble Servic e Required You canno ts hift int ot he transmission position R due to am alfunction .
The transmission position s P , N or D continu etobea vailable.
Aw arning tone also sounds. X
Visit aq ualified specialist workshop .
Transmission Mal ‐
function Sto p Am alfunction has occurred in th em echanical transmission compo -
nents.
Aw arning tone also sounds. The gearbox automatically shift stop osi-
tion N . 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
Shift th et ra nsmission to position P .X
Secur et he vehicl ea gainst rollin ga way ( Y
page 131).X
Notify aq ualified specialist workshop or breakdown service.
Sto pV ehicl eL eave
Engine Runnin g Wai t
Transmission Cool‐
ing The transmission has overheated. Pullin ga way can be temporarily
impaire dorn ot possible.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
Wait until th ed isplay message disappear sb efore pullin ga way.
Auxiliary Batter y
Malfunction The auxiliary battery for th ea utomatic transmission is no longer bein g
charged. X
Visit aq ualified specialist workshop at th en ex to pportunity.X
Unti lt hen, set th et ra nsmission to position P before you switch off
th ee ng ine. X
Befor el eaving th ev ehicle, apply th ee lectric parking brake.