engine MERCEDES-BENZ S CLASS 2019 Repair Manual

Towingthevehicle with bothaxles ontheground
#Observethe notes onthe permittedtowingmethods (→page 424).
#Make surethatthe battery is connected andcharged.
Whenthe battery is discharged,thefollowingactions cannot be performed:
Rthe engine cannotbestarted
Rthe electric parking brake cannotbereleasedor applied
Rthe automatic transmission cannotbe shiftedtoposition\\or]
%Ifthe automatic transmission cannotbe shif‐tedtoposition\\, orthe multifunction dis‐play inthe instrument cluster does not showanything, havethevehicle transportedaway(→page 427). Atowingvehicle with liftingequipment isrequiredforvehicle transporta‐tion.
*NOTEDamagedueto towingawayatexcessively high speeds orover long dis‐tances
The drivetrain could be damaged whentow‐ing atexcessively high speeds orover longdistances.
#Atowing speed of 30mph (50 km/h)must not beexceeded.
#Atowing distance of 30 miles (50 km)mustnot beexceeded.
&WARNINGRisk of accident whentowingavehicle which istoo heavy
Ifthevehicle beingtow-started ortowedawayis heavierthanthe permissible grossmass ofyourvehicle,thefollowing situationscan occur:
RThetowingeye may become detached.
RThevehicle/trailer combination mayswerveorevenoverturn.
#If anothervehicle istow-started ortowedaway, itsweight must notexceed
the permissible gross mass ofyourownvehicle.
If avehicle must betow-started ortowedaway,itsweight must notexceedthe permissible grossmass ofthetowingvehicle.
#Information onthe permissible gross mass ofthevehicle can befound onthevehicle iden‐tification plate (→page 466).
#Do not openthe driver's door or frontpassenger door,otherwisethe automatictransmission automatically shiftstoposition].#Installthetowingeye (→page 429).
#Fastenthetow bar.
*NOTEDamageduetoincorrect connec‐tion
#Only connectthetowrope ortow bartothetowingeyes.
#Deactivatethe automatic locking mechanism(→page 68).
426Breakdown assistance

RThevehicle has been loaded ontothe transporter correctly
RThevehicle is secured at allfourwheels with suitabletensioningstraps
RThe maximum permissible speed of35mph (60 km/h) is notexceededwhen transporting
*NOTEDamagetothevehicle from secur‐ing it incorrectly
#After loading,thevehicle must besecured on allfour wheels. Otherwise,thevehicle could be damaged.
#A minimum distance of 4 in (10 cm)upwards and 8 in (20 cm) downwardsmust bekepttothe transport platform.
Transport level is notavailableforthefollowingvehicles:
RMercedes-AMGvehicles
RVehicles with MAGICBODYCONTROL
%Depending onthe model, button1is loca‐ted inthe control panel betweenthesteeringwheel andthe driver's door.
#Toactivate transportlevel:press button1.Indicator lamp2lights up.
Thevehicle israisedby1.2 in (30 mm) com‐paredtothe normal level.
#Press button1again and hold itfor at leastfiveseconds.Thevehicle israised fromtheraised leveltothe transport level.
The transport level isreached when indicatorlamp2flashes andtheMax. Speed 22mphdisplay message appears inthe multifunctiondisplay.
Thevehicle is lowered again inthefollowing sit‐uations:
RWhen drivingfasterthan 22mph (35 km/h).
RAfter selecting a drive program usingtheDYNAMIC SELECT switch.
Thevehicle isthen adjustedtothe height ofthe last active drive program.
#Securethevehicle on allfour wheels afterloading.
#Todeactivate transportlevel:starttheengine whenthevehicle is at astandstill.If transportlevel is activated, indicator lamp2flashes.
428Breakdown assistance

*NOTEDamageduetoincorrect use ofthetowingeye
When atowingeye is usedtorecover avehi‐cle,thevehicle may be damaged inthe proc‐ess.
#Only usethetowingeyeto towawayortowstartthevehicle.
Tow-startingthevehicle (emergency enginestart)
*NOTEDamagetothe automatic trans‐mission dueto towstarting
The automatic transmission may be damagedinthe process oftowstartingvehicles withautomatic transmission.
#Vehicles with automatic transmissionmust not betowstarted.
#Vehicles with automatic transmission mustnot betow-started.
Electrical fuses
Notes on electrical fuses
&WARNINGRisk of accident and injurydueto overloaded lines
Ifyou manipulate or bridge afaulty fuse or ifyoureplace it with a fuse with a higheramperage,the electric line could beoverloa‐ded.
This couldresult in afire.
#Alwaysreplacefaulty fuses with speci‐fied new fuses containingthe correctamperage.
*NOTEDamagecausedbyincorrect fuses
Incorrect fuses may cause damagetoelectri‐cal components or systems.
#Only use Mercedes-Benz approvedfuses withthe correct fuserating.
Blown fuses mustbereplaced with fuses ofthesamerating, whichyou canrecognizebythecolor and fuserating. The fuseratings and fur‐
ther informationtobe observed are listed inthefuse assignment diagram.
*NOTEDamageor malfunctions causedbymoisture
Moisture may cause damagetothe electricalsystem or cause ittomalfunction.
#Whenthe fuse box is open, make surethat no moisture can enterthe fusebox.
#When closingthe fuse box, make surethatthe seal ofthe lid is positioned cor‐rectly onthe fuse box.
Ifthe newly inserted fuse also blows, havethecause traced andrectified at aqualified special‐istworkshop, e.g. an authorized Mercedes-BenzCenter.
Ensurethefollowing beforereplacing a fuse:
RThevehicle is secured againstrollingaway
RAll electrical consumers are switched off
RThe ignition is switched off
430Breakdown assistance

The electrical fuses are located inthefollowingfuse boxes:
RFuse box inthe engine compartment onthedriver's side (→page 431)
RFuse box onthe driver's side ofthe cockpit(→page 432)
RFuse box inthe front passengerfootwell(→page 432)
RFuse box inthe trunk ontheright-hand sideofthevehicle when viewed inthe direction oftravel (→page 433)
Opening and closingthe fuse box intheengine compartment
Requirements:RObservethe notes on electrical fuses(→page 430).
RHavethefollowingtoolsreadilyavailable:
-a dry cloth
-a screwdriver
Opening
&WARNINGRisk of injuryfrom usingthewindshield wipers whilethe engine hoodis open
Whenthe engine hood is open andthe wind‐shield wipers are set in motion,you can betrappedbythe wiper linkage.
#Always switch offthe windshield wipersand ignition before openingthe enginehood.
#Releaseretaining clips1.Pull cover2up.
Breakdown assistance431

Setting upthefoldingchock
Preparingthevehiclefor a wheelchange
Requirements:RTherequired tire-changetool kit isavailable.Ifyourvehicle is not equipped withthe tire-changetool kit, consult aqualified specialistworkshoptofind out about suitabletools.
RThevehicle is not on a slope.
RThevehicle is on solid, non-slippery and levelground.
#The electric parking brake is applied man‐ually.
#Movethe front wheelstothestraight-aheadposition.
#Shiftthe transmissiontoposition].
#Vehicles with AIRBODYCONTROL orMAGICBODYCONTROL:Setthe normalvehicle level.
#Switchoffthe engine.
#Make surethatthe engine cannotbestarted.
#Placechocksorother suitable items underthe front andrear ofthe wheelthat is diago‐nally oppositethe wheelyou wishtochange.
#Removethe hub caps if necessary(→page 458).
#Raisethevehicle (→page 459).
Removing and installing hub caps
Requirements:RThevehicle is preparedfor a wheelchange(→page 458).
Plastic hub cap
#Toremove:turnthe center cover ofthe hubcap counter-clockwise andremovethe hubcap.
#Toinstall:make surethatthe center cover ofthe hub cap is turned counter-clockwise.
458Wheels and tires

RThe jack must be placed on afirm,flat andnon-slip surface. If necessary,use a large,flat, load-bearing, non-slip underlay.
RThefootofthe jack must be positionedverti‐cally underthe jack support point.
Rules of conduct whenthevehicle israised:
RNever placeyour hands orfeetunderthevehicle.
RNever lie underthevehicle.
RDo notstartthe engine and do notreleasethe electric parking brake.
RDo not open or close any doors orthe trunklid.
#Usingthe lug wrench, loosenthe wheel boltsonthe wheelyou wishtochangebyaboutone full turn. Do not unscrewthe bolts com‐pletely.
Position of jack support points
&WARNINGRisk of injuryfrom incorrectpositioning ofthe jack
Ifyou do not positionthe jack correctly atthe appropriate jacking point ofthevehicle,the jack could tip withthevehicleraised.
#Only positionthe jack atthe appropri‐ate jacking point ofthevehicle. Thebase ofthe jack must be positionedver‐tically underthe jacking point ofthevehicle.
460Wheels and tires

Thefollowing can be used inthevehicle withoutrestrictions:
RRF transmitters witha maximum transmis‐sion output of upto100 mW
RRF transmitters with transmitter frequenciesinthe 380 -410 MHz frequency band and amaximum transmission output of upto2 W(trunkedradio system/Tetra)
Rmobile phones (2G/3G/4G)
There are norestrictions when positioningtheantenna onthe outside ofthevehiclefor somewavebands.
This appliestothefollowingwavebands:
Rtrunkedradio system/Tetra
R70 cm frequency band
R2G/3G/4G
Vehicle identification plate, VIN and enginenumberoverview
Vehicle identification plate
Vehicle identification plate (USA only)
1Permissiblegrossweight
2Permissible front axle load
3Permissiblerear axle load
4Paint code
5VIN (vehicle identification number)
466Technical data

Vehicle identification plate (Canada only)
1Permissiblegrossweight
2Permissible front axle load
3Permissiblerear axle load
4Paint code
5VIN (vehicle identification number)
The permissible grossvehicleweight is made upofthevehicleweight, allvehicle occupants,thefuel andthe load. The maximum gross axleweightrating isthe maximumweightthat can becarried on one axle (front orrear axle).
Neverexceedthe permissible grossvehicleweight orthe maximum gross axleweightratingforthe front orrear axle.
VIN in front ofthe front seat
1VIN (vehicle identification number)
Additional plates
1Platewith information about emissionstest‐ing, including confirmation of emissionsguidelines attheU.S.federal level aswell asfor California
2VIN (vehicle identification number)
3Engine number (stamped intothe crankcase)
Technical data467

Only use products approvedbyMercedes-Benz.
You can identify operatingfluids approvedbyMercedes-Benzbythefollowing inscriptions onthe container:
RMB-Freigabe (e.g. MB-Freigabe 229.51 )
RMB-Approval (e.g. MB-Approval 229.51)
Further information on approved operatingflu‐ids:
Rinthe Mercedes-Benz SpecificationsforOperating Fluids at http://bevo.mercedes-benz.com (by enteringthe designation)
Rinthe Mercedes-Benz SpecificationsforOperating Fluids inthe Mercedes-Benz BeVoapp (by enteringthe designation)
Rat aqualified specialistworkshop
Fuel
Notes on fuelgradesforvehicles with agas‐oline engineObservethe notes on operatingfluids(→page 468).
*NOTEDamagecausedbythe wrong fuel
Even small amounts ofthe wrong fuel couldresult in damagetothe fuel system,theengine andthe emission control system.
#Onlyrefuel with low-sulfur unleadedfuel.
This fuel may contain upto10%ethanolbyvolume.Yourvehicle is suitablefor use withE10 fuel.
Neverrefuel with one ofthefollowing fuels:
RDiesel
RGasoline with morethan10%ethanolbyvolume, e.g. E15, E85, E100
RGasoline with morethan 3% methanolbyvolume, e.g. M15, M30, M85, M100
RGasoline with additives containing metal
Ifyou haveaccidentallyrefueled withthewrong fuel:
#Do not switchonthe ignition.
#Consult aqualified specialistworkshop.
Iftheavailable fuel is not sufficiently low in sul‐fur,this can produce unpleasant odors.
Onlyrefuel with fuel,that has at leastthe octanenumber specified inthe instruction label inthefuelfillerflap (→page180).
Ifyouwant maximum engine output:onlyrefuel with unleaded premium gradegasolinewith at least91AKI/95RON.
As atemporary measure, iftherecommendedfuel is notavailable,you may also use unleadedregulargasoline with an octane number of atleast87AKI/91RON.
*NOTEPrematurewearthrough unleadedregulargasoline
Unleadedregulargasoline can causetheenginetowear morequickly and impair lon‐gevity and performance.
If unleaded premium gradegasoline isunavailable andyou havetorefuel usingunleadedregulargasoline with87AKI/91RON:
Technical data469

#Onlyfillthe fueltanktohalf full withunleadedregulargasoline andtop up assoon as possible with unleaded pre‐mium gradegasoline.
#Do not drive atthe maximum speed.
#Avoid sudden acceleration and enginespeedsover 3000rpm.
This mayreduce engine performance andincrease fuel consumption. Neverrefuel usinggasoline with a lower octane number.
Further information on fuel can befound:
Rat agasstation
Rat aqualified specialistworkshop
RUSA only:at http://www.mbusa.com
Information on additives ingasolineObservethe notes on operatingfluids(→page 468).
*NOTEDamagefrom use of unsuitableadditives
Even small amounts ofthe wrong additivemay leadtomalfunctions occurring.
#Only add cleaning additivesrecommen‐dedbyMercedes-Benztothe fuel.
Mercedes-Benzrecommendsthatyou use fuelbrandsthat haveadditives.
In some countries,the fuelavailable may nothavesufficient additives.Residue could build upinthe fuel injection system as aresult. Inthiscase, in consultation with an authorizedMercedes-Benz Center,the fuel may be mixedwiththe cleaning additiverecommendedbyMercedes-Benz. Be suretoobservethe notesand mixingratios specified onthe container.
Tank content and fuelreserveThetotal capacity ofthe fueltank mayvary,depending onthevehicle equipment.
ModelTotal capacity
All models21.1gal (80.0 liters)
ModelOf whichreserve
All models2.1gal (8.0 liters)
Engine oil
Notes on engine oilObservethe notes on operatingfluids(→page 468).
47 0Technical data