engine MERCEDES-BENZ S-CLASS CABRIOLET 2017 Repair Manual

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

Displa
ymessages
Possible causes/consequences and M
MSolutions
 Key not detected (white
displa ymessage) *T
hekeyisc urrently und etected. #
Chang ethe location of thek eyinthev ehicle. #
Ifth ek eyisstill no trecognised, star tt he engine wit hthe keyint he stow agec ompartment .
 Key no tdetected (red dis‐
pla ym essage) *T
hekeyc anno tbed etected and ma ynolonger be in thev ehicle.
The keyisn olon gerint hevehicle and yous wit ch offt he engine:
R youc an no lon gers tart thee ngine.
R youc anno tcentrally loc kthe vehicle. #
Ensur ethat thek eyis in thev ehicle.
If th ek eydetection function ha samalfunction du etoastrongradio signal source: #
pull overand stop thev ehicle safely as soon as possible, paying attention toroad and traf ficc onditions. #
Place thek eyinthes towa ge compartment fors tartin gt he engine wit hthe key.
 Plac ethe keyint he
marke dspac eSeeOwner's
Manual *T
hekeyd etection function is malfunctioning. #
Chang ethe location of thek eyinthev ehicle. #
Startt he vehicle wit hthe keyint he stow agec ompartment . Displa
ymessages and warning/indicator lamps 449

Ve
hicle Displa
ymessages
Possible causes/consequences and M
MSolutions
Apply brake to deselect
Park (P) position *
Yo uh ave attem ptedtos hiftthe transmission out of position jand int oanother transmission position. #
Depress theb rake pedal.
To shift out of PorN,
depress brake and start
engine *
Yo uh ave attem ptedtos hiftthe transmission out of position jori intoa nother transmission position. #
Depress theb rake pedal. #
Startt he engine.
Risk of vehicle rolling
Driver door open and trans-
mission not in P *
The driver's door is no tfully closed and thet ransmission is in position k,iorh. #
Shif tthe transmission toposition jwhen youp arkt he vehicle.
Np ermanently active Risk
of vehicle rolling *
While thev ehicle is rolling or while youa redriving, thet ransmission has been shif tedtop osition i. #
Depress theb rake pedal tostop and, when thev ehicle is stationar y,shif tthe transmission toposition j. #
Tocontinu eyour journe y,shif tthe transmission toposition hork.
Only select Park (P) when
vehicle is stationary *
The transmission can onl ybeshiftedtop osition jwhen thev ehicle is stationar y. 450
Displa ymessages and warning/indicator lamps

Displa
ymessages
Possible causes/consequences and M
MSolutions
Stop vehicle Leave engine
runnin gWait Transmission
cooling *T
he transmission has overheated. Pulling away can be temp orarily impaired or no tpossible. #
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.
Auxiliar ybattery malfunc-
tion *T
he auxiliary batteryfor thet ransmission is no longer being charge d. #
Consult aqualified specialis tworks hop. #
Untilthen, alw aysm anually se tthe transmission toposition jbefor eyou switc hoffthee ngine. #
Befor eleaving thev ehicle, apply thee lectric parking brake.
Air conditionin gMalfunc-
tion See Owner's Manual *O
peration of thec limat econtrol sy stem is temp orarily restricted. Air flow and fresh air suppl yaresettoa utomatic
mode. #
Have thec limat econtrol sy stem checkedataq ualified specialis tworks hop. 452
Displa ymessages and warning/indicator lamps

Displa
ymessages
Possible causes/consequences and M
MSolutions
Active bonnet malfunction
See Owner's Manual *T
he activ ebonne t(pedestrian pr otection) is malfunctioning or inoperativ eafter having already been triggered. #
Consult aqualified specialis tworks hop.
M *T
he engine bonne tisopen. &
WARNING Risk of accident du etodriving wit hthe engine bonne tunlo cked
An unloc kede ngin ebonn etma yopen up when thev ehicle is in motion and bloc kyour vie w. #
Neveru nloc kthe engine bonne twhen driving. #
Befor eevery trip, ensur ethat thee ngine bonn etis loc ked. #
Pull overand stop thev ehicle safely as soon as possible. #
Close thee ngine bonn et.
C *A
tlea st one door is open. #
Close al ldoo rs. Displ
aymessa gesa nd warning/indicator lamps 455

Displa
ymessages
Possible causes/consequences and M
MSolutions
N *T
he boo tlid is open. &
WARNING Risk ofexhaus tgas poisoning
Combustio nengines emit poisonous exhaus tgases suc hascarbon monoxide. Exhaus tgases can enter the
ve hicle interior if theb ootlid is open when thee ngine is running ,especially if thev ehicle is in motion. #
Alw ayss witc hoffthee ngine befor eopening theb ootlid. #
Neverd rive wit hthe boo tlid open. #
Close theb ootlid.
_ Example:Front left seat
backrest not locked *T
he seat backres tofthe cor responding front seat is no tengaged. #
Push thes eat backres tbacku ntil it engages.
¥
Top up washer fluid *T
hewasher fluid le velint hewasher fluid reser voir has dropped belo wthe minimum. #
Topupt hewasher fluid . 456
Displa ymessages and warning/indicator lamps

Sof
ttop Displa
ymessages
Possible causes/consequences and M
MSolutions
K Decrease speed *T
he sof ttop is open. If youd rive at speeds greater than 60 km/h, it is no tpossible toclos ethe sof ttop. #
Do no tdrive fast erthan 60 km/h. #
Pull or press and hold thes oft-to pswitc huntil thes oftt op is closed fully.
K Start engine See Owner's
Manual *T
he on-boar delectrical sy stem voltag eist oo lo w. #
Startt he engine.
K
While stationary, apply the
brakes before operating
the soft top. *T
hevehicle is stationar yand yout ryto open or close thes oftt op. #
Depress theb rake pedal. #
Push or pull thes oftt op switc hagain until thes oftt op is fully open or closed. Displa
ymessages and warning/indicator lamps 457