check engine MERCEDES-BENZ S CLASS 2019 User Guide

#Followthe instructions inthe serviceinterval displayregardingthe oilchange.
*NOTEDamagecausedbyaddingtoomuch engine oil
Too much engine oil can damagethe engineorthe catalytic converter.
#Haveexcess engine oilremoved at aqualified specialistworkshop.
#Turncap1counter-clockwise andremoveit.
#Add engine oil.
#Replace cap1and turn it clockwise asfaras it will go.
#Checkthe oil level again (→page 399).
Checking coolant level
&WARNINGRisk of burns from hot com‐ponent parts inthe engine compartment
Certain components inthe engine compart‐ment can beveryhot, e.g.the engine,theradiator and parts oftheexhaust system.
#Allowthe enginetocool down and onlytouch component parts described inthefollowing.
&WARNINGRisk of scalding from hotcoolant
The engine cooling system is pressurized,particularly whenthe engine iswarm. Ifyouopenthe cap,you could be scaldedbyhotcoolant spraying out.
#Letthe engine cool down before open‐ingthe cap.
#When openingthe cap,wear protectivegloves and safetyglasses.
#Openthe cap slowlytorelease pres‐sure.
Maintenance and care401

#Parkthevehicle on a level surface.
#Checkthe coolanttemperature display intheinstrument cluster.The coolanttemperature must be below158 °F (70 °C).
#If necessary,removethe cover.
#Slowly turn cap1counter-clockwisetorelieve overpressure.
#Continue turning cap1counter-clockwiseandremoveit.
The coolant level is correct:
RIfthe engine is cold, uptomarker bar2.
RIfthe engine iswarm, upto0.6 in (1.5 cm)over marker bar2.
#If necessary,add coolantthat has beenapprovedbyMercedes-Benz.RFurther information on coolant:(→page472)
Addingwasherfluidtothe windshieldwasher system
&WARNINGRisk of burns from hot com‐ponent parts inthe engine compartment
Certain component parts inthe engine com‐partment can beveryhot, e.g.the engine,the cooler and parts oftheexhaust system.
#Letthe engine cool down and onlytouchthe component parts describedasfollows.
&WARNINGDanger of burns when open‐ingthe hood
Ifyou openthe hood whenthe engine hasoverheated or during afireinthe enginecompartment,you could come into contactwith hotgases orother escaping operatingfluids.
#Before openingthe hood, allowtheenginetocool down.
#Intheevent of afireinthe engine com‐partment,keepthe hood closed andcallthefireservice.
&WARNING‑ Risk offireand injury fromwindshieldwasher concentrate
Windshieldwasher concentrate is highlyflammable. It could ignite if it comes intocontact withhot engine component parts ortheexhaust system.
#Make surethat no windshieldwasherconcentrate spills out nexttothefilleropening.
402Maintenance and care

#When givingstarting assistance, alwaysmake surethatyou onlyconnect bat‐teryterminals with identical polarity.
#Duringstarting assistance,you mustobservethe described orderfor con‐necting and disconnectingthe jumpercables.
#Do not connect or disconnectthe bat‐teryclamps whilethe engine isrunning.
&WARNINGRisk ofexplosion duringcharging process andstarting assistance
Duringthecharging process andstartingassistance,the battery mayrelease anexplo‐sivegas mixture.
#Avoidfire, openflames, creating sparksand smoking.
#Make surethatthere is sufficientventi‐lation duringthecharging process andduringstarting assistance.
#Do not leanover a battery.
&WARNINGRisk ofexplosion from a fro‐zen battery
A discharged battery may freeze attempera‐tures slightly aboveor below freezing point.
Duringstarting assistance or batterycharg‐ing, batterygas may bereleased.
#Alwaysthawa frozen batteryoutfirstbeforecharging it or performingstart‐ing assistance.
Ifthe indicator/warning lamps inthe instrumentcluster do not light up at lowtemperatures, it isverylikelythatthe discharged battery has fro‐zen. Inthis caseyou may neither jump-startthevehicle norchargethe battery.
The service life of a batterythat has beenthawed may be dramatically shortened. Thestartingcharacteristics may be impaired, espe‐cially at lowtemperatures.
It isrecommendedthatyou haveathawed bat‐terychecked at aqualified specialistworkshop.
Allvehicles
*NOTEDamagecausedbynumerous orextended attemptstostartthe engine
Numerous orextended attemptstostarttheengine may damagethe catalytic converterduetonon-combusted fuel.
#Avoid numerous andextended attemptstostartthe engine.
Observethefollowing points duringstartingassistance and whenchargingthe battery:
ROnly use undamaged jumper cables/charg‐ing cables with a sufficient cross-section andinsulatedterminal clamps.
RNon-insulated parts oftheterminal clampsmust not come into contact withother metalparts whilethe jumper cable/charging cableis connectedtothe battery/jump-startcon‐nection point.
RThe jumper cable/charging cable must notcome into contact withany parts which maymovewhenthe engine isrunning.
422Breakdown assistance

Display messagesPossible causes/consequences andPPSolutions
#Consult aqualified specialistworkshop.
=
Stop Vehicle Leave EngineRunning
*The batterychargelevel istoo low.
#Pullover andstopthevehicle safely as soon as possible, paying attentiontoroad and traffic conditions. Do notcontinue driving under any circumstances.
#Leavethe enginerunning.
#Wait untilthe display message disappears before pullingaway.
Check Coolant Level SeeOperator's Manual
*The coolant level istoo low.
*NOTEEngine damageduetoinsufficient coolant
#Avoid long journeyswith insufficient coolant.
#Add coolant (→page 401).

Warning/indicator lampPossible causes/consequences andPPSolutions
#Consult aqualified specialistworkshop.
#Do not add brakefluid.
#Pullover andstopthevehicle safely as soon as possible, paying attentiontoroad and traffic conditions. Do notcontinue driving under any circumstances.
#Observethe messages onthe multifunction display.
#Consult aqualified specialistworkshop.
%
ABSwarning lamp
Theyellow ABSwarning lamp is lit whilethe engine isrunning.
ABS is malfunctioning.
Ifthere is an additionalwarningtone, EBD is malfunctioning.
Other driving systems and driving safety systems may also malfunction.
&WARNINGThereisrisk of skidding if EBD or ABS is malfunctioning
If EBD or ABS is malfunctioning,the wheels could lock when braking
Thesteering capability and brakingcharacteristics arethus severelyimpaired. The braking distance in an emer‐gency braking situation can increase. In addition,other driving safety systems are switched off.
#Drive on carefully.
#Havethe brake systemchecked immediately at aqualified specialistworkshop.
#Drive on carefully.
Display messages andwarning/indicator lamps525

Warning/indicator lampPossible causes/consequences andPPSolutions
#Havetherestraint systemchecked andrepaired immediately at aqualified specialistworkshop.
#Drive on carefully.
#Observethe messages onthe multifunction display.
#Visit aqualified specialistworkshop immediately.
Seat belts
Warning/indicator lampPossible causes/consequences andPPSolutions
v
Seat beltwarning lamplights up
Thered seat beltwarning lamp will light upfor six seconds oncethe engine hasstarted.
In addition, awarningtone may sound.
The seat beltwarning lampremindsthe driver and front passengertofastentheir seat belts.
#Fastenyour seat belt (→page37).
Ifyou haveplaced objects onthe front passenger seat,the seat beltwarning lamp mayremain lit.
v
Seat beltwarning lampflashes
Thered seat beltwarning lampflashes and an intermittentwarningtone sounds.
The driver or front passenger has notfastenedtheir seat belt whilethevehicle is in motion.
#Fastenyour seat belt(→page37).There are objects onthe front passenger seat.
#Removethe objects fromthe front passenger seat.
Display messages andwarning/indicator lamps529

Warning/indicator lampPossible causes/consequences andPPSolutions
Engine diagnosiswarninglampIn somestates, legalrequirementsstipulatethatyou must immediately consult aqualified specialistworkshop as soonastheyellow Check Enginewarning lamp lights up.
#Havethevehiclechecked as soon as possible at aqualified specialistworkshop.
=
Electrical malfunctionwarn‐ing lamp
Thered electrical malfunctionwarning lamp is lit.
There is a malfunction inthe electrics.
#Observethe messages onthe multifunction display.

Warning/indicator lampPossible causes/consequences andPPSolutions
or
#Exitthevehicle andkeep a safe distance from it untilthe engine has cooled down.
#Checkthe coolant level (→page 401).
#Make surethatthe air supplytotheradiator is not obstructed.
#Avoiding high loads onthe engine, drivetothe nearestqualified specialistworkshop. In doing so, ensurethatthecoolanttemperature displayremains belowthered area.
Tires
Warning/indicator lampPossible causes/consequences andPPSolutions
w
Tirepressure monitoringsystemwarning lamp lightsup
Theyellow tire pressure monitoring systemwarning lamp (pressure loss/malfunction) is lit.
The tire pressure monitoring system has detected tire pressure loss in at least one ofthe tires.
&WARNINGRisk of an accident duetoinsufficient tire pressure
Tirepressuresthat aretoo low posethefollowing hazards:
RThe tires may burst, especially asthe load andvehicle speed increase.
RThe tires maywearexcessively and/or unevenly,which may greatly impair tire traction.
RThe drivingcharacteristics, aswell assteering and braking, may be greatly impaired.
You couldthen lose control ofthevehicle.
Display messages andwarning/indicator lamps533

Coolant (engine)Check level .......................................... 401Filling capacity .....................................473Notes ...................................................472
CopyrightLicenses ................................................ 29Trademarks............................................ 29
Cornering light function..........................14 8
Coversee Side windows
CrossTraffic Alert...................................236
Crosswind AssistFunction/notes ...................................19 5
Crosswind Assistsee MAGICBODYCONTROL
Cruise control.......................................... 200Buttons ................................................ 201Calling up a speed ............................... 201Function .............................................. 200Requirements: .....................................201Selecting ............................................. 201Setting a speed .................................... 201Storing a speed ................................... 201
Switching off ....................................... 201Switching on ........................................201System limitations ...............................200
Cup holder................................................131Installing/removing (center console) ...131Rear passenger compartment (vehi‐cles with arear benchseat) .................13 2Rear passenger compartment (vehi‐cles with electrically adjustablerearseats) ..................................................13 2Removing/installingthe insert (vehi‐cles with electrically adjustablerearseats) ..................................................13 2Switchingthe cooling/heating func‐tion on/off ..........................................13 3
Cushionbag................................................ 38
Customer Assistance Center (CAC).........25
CustomerRelations Department.............25
D
Dashboardsee Cockpit
Dashboard lightingsee Instrument cluster lighting
Data acquisitionVehicle .................................................. 26
Data import/export................................ 294Function/notes ................................... 294Importing/exporting ........................... 294
DatastorageElectronic control units .........................26Online services ......................................27Vehicle .................................................. 26
DateSettingthe time and date automati‐cally ..................................................... 288
Daytimerunning lamp modesee Daytimerunning lights
Daytimerunning lights...........................14 9Switching on/off .................................14 9
Deactivatingthe alarm(ATA)....................91
Dealershipsee Qualified specialistworkshop
Declaration of conformityWirelessvehicle components ................23
Decorativefoil (cleaning instructions)...................................................................406
544Index

Engine number........................................ 466
Engine oil.................................................400Additives ..............................................470Capacity ...............................................471Checkingthe oil level usingthe oildipstick ............................................... 399Checkingthe oil level usingthe on-board computer ................................... 399MB-Freigabe or MB-Approval ...............471Quality .................................................471Topping up ...........................................400
EnteringcharactersFunction/notes ................................... 285
ESC (ElectronicStability Control)
see ESP®(ElectronicStability Program)
ESP®
Crosswind Assist .................................19 5
ESP®(ElectronicStability Program)......19 3Activating/deactivating .......................195Function/notes ...................................19 3
Exterior lightingCare .................................................... 409
Exterior lightingsee Lights
Exterior mirrors...............................154,15 5Anti-glaremode (automatic) ................155Automatic mirrorfolding function ........157Folding in/out .....................................154Operatingthe memory function ...........11 5Parking position ...................................156Setting .................................................154
External deviceLocking (child safety lock) ...................293
Eyeglasses compartment.......................124
F
Fatigue detectionseeATTENTION ASSIST
FavoritesAdding .................................................283Calling up ............................................ 282Deleting ............................................... 283Moving ................................................ 283Overview ............................................. 282Renaming ............................................ 283
FlaconInserting/removing .............................16 3
Flat tire.....................................................413Changing a wheel ................................ 458MOExtended tires ................................41 4Notes ...................................................413TIREFIT kit ............................................41 5
FlattowingseeTow-bar system
Floor mats................................................14 3
Foil coveringRadar sensors ......................................191
Folding table............................................124
FragranceseePerfume atomizer
Free software............................................ 29
FrequenciesTwo-wayradio ...................................... 465
Frequency bandDialing (on-board computer) ................ 259
Front airbag (driver, front passenger).....38
Index551