2017 MERCEDES-BENZ S-CLASS CABRIOLET engine

Displa
ymessages
Possible causes/consequences and M
MSolutions
Radar sensors dirty See
Owner's Manual *T
heradar sensor sy stem is malfunctioning. Possible causes:
R soiling of thes ensors
R heavy rain
R extende dcountr ydriving wi thout other traf fic, e.g. in thed esert
Driving sy stems and driving saf etys ystems ma ybem alfunctioning or temp orarily una vailable.
Onc ethe cause of thep roblem is no longer present ,driving sy stems and driving saf etys ystems ar eavailable again.
If th ed ispla ymessag edoes no tdisappear: #
Pull overand stop thev ehicle safely as soon as possible, paying attention toroad and traf ficc onditions. #
Clea nallsenso rs . #
Restar tt he engine. 428
Displa ymessages and warning/indicator lamps

Displa
ymessages
Possible causes/consequences and M
MSolutions
Radar sensors dirty See
Owner's Manual *T
heradar sensor sy stem is malfunctioning. Possible causes:
R soiling of thes ensors
R heavy rain
R extende dcountr ydriving wi thout other traf fic, e.g. in thed esert
Driving sy stems and driving saf etys ystems ma ybem alfunctioning or temp orarily una vailable.
Onc ethe cause of thep roblem is no longer present ,driving sy stems and driving saf etys ystems ar eavailable again.
If th ed ispla ymessag edoes no tdisappear: #
Pull overand stop thev ehicle safely as soon as possible, paying attention toroad and traf ficc onditions. #
Clea nallsenso rs . #
Restar tt he engine. Displa
ymessages and warning/indicator lamps 429

Displa
ymessages
Possible causes/consequences and M
MSolutions
Active Blind Spot Assist
currently unavailable See
Owner's Manual *A
ctiv eBlind Spo tAssististemp orarily una vailable.
The sy stem border shave been reached (→ page212). #
Driv eon.
Once thec ause of thep roblem is no longer present ,the sy stem will be available again. #
Ifth ed ispla ymessag edoes no tdisappear ,stopt he vehicle while paying attention toroad and traf ficc onditions
and restar tt he engine.
Active Blind Spot Assist
inoperative *A
ctiveBlind Spo tAssistis malfunctioning. #
Consult aqualified specialis tworks hop.
Blind Spot Assist currently
unavailable See Owner's
Manual *B
lind Spo tAssis tist emporaril yunavailable.
The sy stem border shave been reached (→ page212). #
Driv eon.
Once thec ause of thep roblem is no longer present ,the sy stem will be available again.
or #
Ifth ed ispla ymessag edoes no tdisappear ,stopt he vehicle while paying attention toroad and traf ficc onditions
and restar tt he engine. #
If necessar y,clean ther ear bumper .Ifthe bumper is extreme lydirty ,the sensor sinthe bumper ma ybemal‐
functioning.
Blind Spot Assist inopera-
tive *B
lind Spo tAssis tism alfunctioning. #
Consult aqualified specialis tworks hop. 436
Displa ymessages and warning/indicator lamps

Displa
ymessages
Possible causes/consequences and M
MSolutions
Active Parking Assist and
PARKTRONIC inoperative
See Owner's Manual *A
ctiveParking Assis tand Parking Assis tPARKTRONIC ar emalfunctioning. #
Stop thev ehicle, paying attention toroad and traf ficc onditions ,and restar tt he engine. #
Ifth ed ispla ymessag econtinues tobe displa yed, consult aqualified specialis tworks hop.
Traffic Sign Assist inopera-
tive *T
raffic Sign Assis tismalfunctioning. #
Consult aqualified specialis tworks hop.
Traffic Sign Assist currently
unavailable See Owner's
Manual *T
raffic Sign Assis tistemporaril yunavailable. #
Driv eon.
Onc ethe cause of thep roblem is no longer present ,the sy stem will be available again.
Traffic Sig nAssist Camera
view restricted See Own-
er' sM anual *T
he camer aviewisr estricted. Possible causes:
R dirtont he windscreen in thec amera's field of vision
R heavy rain, sno worfog
Driv ings ystems and driving saf etys yst ems ma ybemalfunctioning or temp orarily una vailable.
Onc ethe cause of thep roblem is no longer present ,driving sy stems and driving saf etys yst ems ar eavailable again.
If th ed ispla ymessag edoes no tdisappear: #
Pull overand stop thev ehicle safely as soon as possible, paying attention toroad and traf ficc onditions. #
Clea nthe windscreen. Displa
ymessages and warning/indicator lamps 437

Engine
Displa
ymessages
Possible causes/consequences and M
MSolutions
Top up coolant See Own-
er’s Manual *T
he coolant le velist oo lo w.
* NO
TEEngine dama gedue toinsuf ficient coolant #
Avoid long journe yswit hinsuf ficient coolant. #
Addc oolant .
?
Coolant Stop vehicle
Switc hengin eoff *T
he coolant is tooh ot. #
Stop thev ehicle immediately ,paying attention toroad and traf ficc onditions ,and switc hoffthee ngine. &
WARNING Danger of bu rnsw hen opening theb onnet
If yo uo pen thee ngine bonn etwhen thee ngine has overheated or during afireint he engine compartment, you
could come int ocontact wi thhotg ases or other escaping operating fluids. #
Befor eopening theb onnet ,allowt he engine tocool down. #
Inthee vent of afireint he engine compartment, keep thee ngine bonn etclosed and cal lthe fire service. #
Wait until thee ngine has cooled down. #
Mak esuret hat thea ir supply tother adiator is no tobstructed. #
Avoiding high loads on thee ngine, driv eontothe neares tqualified specialis tworks hop. In doing so, ensur ethat
th ec oolant temp eratur edispla yremain sbelo w1 20 °C. Displ
aymessa gesa nd warning/indicator lamps 441

Displa
ymessages
Possible causes/consequences and M
MSolutions
? *T
hefanm otorisd efective. #
Avoiding high loads on thee ngine, driv eontothe neares tqualified specialis tworks hop. In doing so, ensur ethat
th ec oolant temp eratur edispla yremain sbelo w1 20 °C.
#
Stop vehicle See Owner's
Manual *T
he batter yisnolonger being charge da nd theb atter ychar geleve list oo lo w.
* NO
TEPossible engine damag eifyou continue driving #
Do no tcontin ue drivin gunder an ycircum stances. #
Consult aqualified specialis tworks hop. #
Pull overand stop thev ehicle safely as soon as possible, paying attention toroad and traf ficc onditions .Donot
continu edriving under an ycircums tances. #
Switc hoffthee ngine. #
Consult aqualified specialis tworks hop.
# Start engine See Owner's
Manual *T
he engine is of fand theb atter ychar geleve list oo lo w. #
Switc hoffelectrica lconsumer sthat ar enotrequ ired. #
Lea vethee ngine running foraf ewminutes, or driv efor alonger dis tance.
The batter ychar ges. 442
Displaymessa gesa nd warning/indicator lamps

Displa
ymessages
Possible causes/consequences and M
MSolutions
# Stop vehicle Leave engine
running *T
he batter ychar geleve list oo lo wand mus tbecharged. #
Pull overand stop thev ehicle safely as soon as possible, paying attention toroad and traf ficc onditions .Donot
continu edriving under an ycircums tances. #
Lea veengine running. #
Wait until thed ispla ymessag edisappear sbefor epulling away.
4 Chec keng.o il lev. when
next refuelling *T
he engine oil le velh as dropped tothem inimum le vel.
* NO
TEEngine dama gecaused bydriving wit hinsuf ficient engine oil #
Avoid long journe yswit hinsuf ficient engine oil. #
Chec kthe engine oil le velw hen next refuelling.
To pupt he engine oil (→ page349).
No tesone ngine oil (→ page412).
8 Reserve fuel level *T
he fuel suppl yhas dropped int othe reser verange. #
Refuel. Displ
aymessa gesa nd warning/indicator lamps 443

Key
Displa
ymessages
Possible causes/consequences and M
MSolutions
 Replace key *T
hekeyn eeds tobe replaced. #
Consult aqualified specialis tworks hop.
Replace key See Owner's
Manual *
Ve hicles with adigital vehicl ekeyinthes ma rtphone: onlyafew or no authorisations remain fors tartin gt he
engine. #
Mak esuret hat theI nterne tconnection is no tlimited bycer tain mobile phon esettings. #
Open theM ercedes me connect weba pp http://www.mercedes.me. and call up the" Digital Car Keyint he
smartphone" service. #
Deactivat ethe service firs ta nd then activat eitagain. #
Ifth ed ispla ymessag estilla ppears, con tact theM ercedes-Benz Cus tomer Assis tance Center (C AC).
 Change key batteries *T
hekeyb atte ry is dischar ged. #
Replace theb atter y. 448
Displaymessa gesa nd warning/indicator lamps