MERCEDES-BENZ C CLASS 2019 Owners Manual

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.
AllvehiclesPlug-inhybrid:observethe notes inthe Supple‐ment. Otherwise,you mayfailtorecognize dan‐gers.
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.
RAlways make surethat neitheryou northebattery is electrostaticallycharged.
RKeepawayfromfireand openflames.
RDo not leanoverthe battery.
Observethe additionalfollowing points whenchargingthe battery:
ROnly use batterychargerstested andapprovedfor Mercedes-Benz.
RReadthe batterycharger's operating instruc‐tions beforechargingthe battery.
Observethe additionalfollowing points duringstarting assistance:
RStarting assistance may only be providedusing batteries with a nominalvoltage of12V.
RThevehicles must nottouch.
RGasoline engine:Onlyacceptstarting assis‐tance ifthe engine andexhaust system arecold.
Starting assistance andchargingthe12 Vbattery
Requirements:RThevehicle is secured withthe electric park‐ing brake.
RAutomatic transmission:The transmissionis in position].
RThe ignition and all electrical consumers areswitched off.
RThe hood is open.
Breakdown assistance37 9

Fold cover1up inthe direction ofthearrow.
Slide cover2of positive clamp3onthejump-starting connection point inthe direc‐tion ofthe arrow.
Connect positive clamp3onyourvehicletothe positive pole ofthe donor battery usingthe jumper cable/charging cable. Alwaysbegin with positive clamp3onyourownvehiclefirst.
Duringstarting assistance:starttheengine ofthe donorvehicle andrun at idlespeed.
Connectthe negative pole ofthe donor bat‐teryandground point4ofyourownvehiclebyusingthe jumper cable/charging cable.Begin withthe donor batteryfirst.
Duringstarting assistance:starttheengine ofyourownvehicle.
Duringthecharging process:startthecharging process.
Duringstarting assistance:letthe enginesrunfor several minutes.
Duringstarting assistance:before discon‐nectingthe jumper cable, switch on an elec‐trical consumer inyourownvehicle, e.g.therear windowheater or lighting.
Whenthestarting assistance/charging processis complete:
First,removethe jumper cable/chargingcable from ground point4and negativepole ofthe donor battery,then from positiveclamp3and positive pole ofthe donor bat‐
380Breakdown assistance

tery. Begin eachtime with the contacts onyourownvehiclefirst.
Afterremovingthe jumper cable/chargingcable, close cover2of positive clamp3.
Close cover1.
Further information can be obtained at aquali‐fied specialistworkshop.
Replacing the12V battery
Observethe notes onthe12V battery(page376).
Mercedes-Benzrecommendsthatyou havethe12V batteryreplaced at aqualified specialistworkshop, e.g. at an authorized Mercedes-BenzCenter.
Observethefollowing notes ifyouwanttoreplacethe batteryyourself:
RAlwaysreplace afaulty batterywith a batterywhich meetsthe specificvehiclerequire‐ments.
Thevehicle is equipped with anAGMtechnol‐ogy battery (Absorbent Glass Mat) or a lith‐ium-ion battery.Fullvehicle functionality isonly guaranteed with anAGM battery or lith‐ium-ion battery.For safetyreasons,Mercedes-Benzrecommendsthatyou onlyuse batteries which havebeentested andapprovedforyourvehiclebyMercedes-Benz.
RCarryover detachable parts, such asventhoses, elbowfitting orterminal coversfromthe battery beingreplaced.
RMake surethatthevent hose is alwayscon‐nectedtothe original opening onthe side ofthe battery.
Install anyexisting or supplied cell caps.
Otherwise,gases or battery acid couldescape.
RMake surethat detachable parts arerecon‐nected inthe sameway.
Towstarting ortowingaway
Permittedtowing methods
Mercedes-Benzrecommends transportingyourvehicle inthe case of a breakdown,ratherthantowing itaway.
Fortowing, use atowrope ortow bar with bothaxles onthe ground. Do not usetow bar sys‐tems.
NOTEDamagetothevehicle dueto tow‐ingawayincorrectly
Observethe instructions and notes ontowingaway.
Breakdown assistance381

Permittedtowing methods
Vehicle equipment/towingmethod
Bothaxles onthegroundFront axleraisedRear axleraised
Vehicles with automatic transmis‐sionYes, maximum31miles (50 km) at31mph (50 km/h)NoYes, ifthesteering wheel isfixed inthe center position with asteeringwheel lock.
4MATICvehiclesYes, maximum31miles (50 km) at31mph (50 km/h)NoNo
Towing with araised axle:towing should beperformedbyatowing company.
Towingthevehicle with bothaxles ontheground
Observethe notes onthe permittedtowingmethods (page 381).
Make surethatthe battery is connected andcharged.
Observethefollowing points whenthe battery isdischarged:
RThe engine cannotbestarted
RThe electric parking brake cannotbereleased or applied
RVehicles with automatic transmission:The automatic transmission cannot be shif‐tedtoposition\\or].
Vehicles with automatic transmission:Ifthe automatic transmission cannotbe shif‐tedtoposition\\, orthe multifunction dis‐play inthe instrument cluster does not showanything, havethevehicle transportedaway(page 384). Atowingvehicle with lift‐ing equipment isrequiredforvehicle trans‐portation.
382Breakdown assistance

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)must not beexceeded.
\nWARNINGRisk 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 betowstarted ortowedaway,its permissible gross mass must notexceedthepermissible gross mass ofthetowingvehicle.Information onthe permissible gross mass ofthevehicle can befound onthevehicle iden‐tification plate (page 423).
Vehicles with automatic transmission:Donot openthe driver's door or front passengerdoor,otherwisethe automatic transmissionautomatically shiftstoposition].Installingthetowingeye (page 385).
Fastenthetow bar.
NOTEDamageduetoincorrect connec‐tion
Only connectthetowrope ortow bartothetowingeyes.
Deactivatingthe automatic locking mecha‐nism (page71).
Do notactivatethe HOLD function.
DeactivateActive Brake Assist(page181).
Vehicles with automatic transmission:Shiftthe automatic transmissiontoposition\\.
Releasethe electric parking brake.
\nWARNINGRisk of accident duetolimi‐ted safety-related functions duringthetowing process
Safety-related functions are limited or no lon‐geravailable inthefollowing situations:
Rthe ignition is switched off.
Rthe brake system or powersteering sys‐tem is malfunctioning.
Rthe energy supply orthe on-board electri‐cal system is malfunctioning.
Whenyourvehicle isthentowedaway, signif‐icantly more effortmay berequiredtosteerand brakethan is normallyrequired.
Use atow bar.
Breakdown assistance383

Make surethatthesteering wheel canmovefreely, beforetowingthevehicleaway.
NOTEDamageduetoexcessive tractivepower
Ifyou pullawaysharply,the tractive powermay betoo high andthevehicles could bedamaged.
Pullawayslowly and smoothly.
Loading thevehiclefor transport
Observethe notes ontowingaway(page 382).
Connectthetow bartothetowingeye inordertoloadthevehicle.
Vehicles with automatic transmission:Shiftthe automatic transmissiontoposition\\.
Vehicles with automatic transmission:The automatic transmission may be locked
in position]intheevent of damagetotheelectrical system.Toshiftto\\, providetheon-board electrical system with power(page379).
Loadthevehicle ontothe transporter.
Vehicles with automatic transmission:Shiftthe automatic transmissiontoposition].
Usethe electric parking braketosecurethevehicle againstrollingaway.
Only securethevehiclebythe wheels.
Vehicles with ADS PLUS (Adaptive DampingSystem PLUS)
\nWARNINGRisk of an accident whentransportingvehicles withAdaptiveDamping System PLUS
Thereduced dampingforces onthevehiclebeing transported can causethevehicle/trailer combinationtostarttoswing.
As aresult, when transportingvehicles withtheAdaptive Damping System PLUS,the
vehicle/trailer combination maystarttoskid.Consequently,you could lose control ofyourvehicle.
When transporting, ensurethat: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 at allfour wheels. Otherwise,thevehicle could be damaged.
A minimum distance of 8 in (20 cm) upand 4 in (10 cm) down mustbekepttothe transport platform.
384Breakdown assistance

Securethevehicle on allfour wheels afterloading.
4MATICvehicles/vehicles with automatictransmission
Make surethatthe front andrear axles cometorestonthe same transportationvehicle.
NOTEDamagetothe drivetrain duetoincorrect positioning
Do not positionthevehicle abovetheconnection point ofthe transportvehi‐cle.
Towingeyestoragelocation
Towingeye1is located inthestowage spaceunderthe trunkfloor.
Installingthetowingeye
Pressthe mark on cover1inwards andremove.
Screwinthetowingeyeclockwise asfar as itwill go and tighten.
Make surethat cover1engages inthebumper whenyouremovethetowingeye.
Breakdown assistance385

NOTEDamageduetoincorrect use ofthetowingeye
When atowingeye is usedtorecover avehi‐cle,thevehicle may be damaged inthe proc‐ess.
Only usethetowingeyeto towawayortowstartthevehicle.
Towstartingthevehicle (emergency enginestart)
Vehicles with automatic transmission
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
\nWARNINGRisk 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.
NOTEDamageduetoincorrect fuses
Electrical components or systems may bedamagedbyincorrect fuses, ortheir func‐tionality may be significantlyimpaired.
Only use fusesthat havebeen approvedbyMercedes-Benz and which havethecorrect fuserating.
Blown fuses mustbereplaced with fuses ofthesamerating, whichyou canrecognizebythecolor and fuserating. The fuseratings and fur‐ther informationtobe observed are listed inthefuse assignment diagram.
Fuse assignment diagram:onthe fuse box inthe trunk (page 388).
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.
Ensurethefollowing beforereplacing a fuse:
RThevehicle is secured againstrollingaway
386Breakdown assistance

RAll electrical consumers are switched off
RThe ignition is switched off
The electrical fuses are located invarious fuseboxes:
RFuse box inthe engine compartment onthedriver's side (page 387)
RFuse box onthe driver's side ofthe cockpit(page 388)
RFuse box inthe front passengerfootwell(page 388)
RFuse box inthe trunk ontheright-hand sideofthevehicle when viewed inthe direction oftravel (page 388)
Opening and closingthe fuse box intheengine compartment
Requirements:RA dry clothand a screwdriver areavailable.
Observethe notes on electrical fuses(page 386).
Opens
\nWARNINGRisk 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.
Turnclip2on cover1aquarter-turncounter-clockwise.
Fold cover1up inthe direction ofthearrow.
Breakdown assistance387

Removeanyexisting moisture fromthe fusebox using a dry cloth.
Loosen screws3andremovefuse box lid4fromthetop.
Closing
Check whetherthe seal is positioned cor‐rectly in lid4.
Insert lid4intothe bracket attherear ofthe fuse box.
Fold down lid4ofthe fuse box and tightenscrews3.
Fold down cover1.
Turnclip2on cover1onequarter-turntotheright.
Closethe hood.
Opening and closingthe fuse box inthecockpit
The fuse box is onthe side ofthe dashboardunder a cover.
Contact an authorized Mercedes-Benz Cen‐terfor further information.
Opening and closingthe fuse box inthe frontpassengerfootwell
Observethe notes on electrical fuses(page 386).
Open cover1inthe direction ofthe arrowandremoveit.
Opening and closingthe fuse box inthetrunk
Observethe notes on electrical fuses(page 386).
388Breakdown assistance