battery MERCEDES-BENZ E CLASS 2019 Owner's Guide

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.
RVehicles with automatic transmission:The transmission is in position].
RThe ignition and all electrical consumers areswitched off.
RThe hood is open.
Slide cover1of positive clamp2onthejump-starting connection point inthe direc‐tion ofthe arrow.
Connect positive clamp2onyourvehicletothe positive pole ofthe donor battery usingthe jumper cable/charging cable. Alwaysbegin with positive clamp2onyourownvehiclefirst.
374Breakdown assistance

Duringstarting assistance:starttheengine ofthe donorvehicle andrun at idlespeed.
Connectthe negative pole ofthe donor bat‐teryandground point3ofyourownvehiclebyusingthe 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, performthefollowingsteps:
First,removethe jumper cable/chargingcable from ground point3andthe negativepole ofthe donor battery,then from positiveclamp2andthe positive pole ofthe donor
battery.Begin eachtime with the contactsonyourownvehiclefirst.
Afterremovingthe jumper cable/chargingcable, close cover1of positive clamp2.
Further information can be obtained at aquali‐fied specialistworkshop.
Replacing the12V battery
Observethe notes onthe12V battery(→page370).
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 is
only 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.
Breakdown assistance375

Towingthevehicle with bothaxles ontheground
Observethe notes onthe permittedtowingmethods (→page375).
Makesurethatthe 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(→page378).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.
\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 (→page417).
Vehicles with automatic transmission:Donot openthe driver's door or front passengerdoor,otherwisethe automatic transmissionautomatically shiftstoposition].Installingthetowingeye (→page 380).
Fastenthetow bar.
NOTEDamageduetoincorrect connec‐tion
Only connectthetowrope ortow bartothetowingeyes.
Deactivatingthe automatic locking mecha‐nism (→page 69).
Breakdown assistance377

Display messagesPossible causes/consequences andPPSolutions
Theyellow$indicator lamp is lit andtheredI(USA only) or$(Canada only) indicator lamp isflashing.The electric parking brake is malfunctioning.
The electric parking brake could not be applied orreleased.
Switchoffthe ignition and switch it back on.
Toapply:
Release andthen applythe electric parking brake manually (→page164).
Torelease:
Apply andthenreleasethe electric parking brake manually.
Ifthe electric parking brake cannotbe applied ortheredI(USA only) or$(Canada only) indicator lampcontinuestoflash:
Do not continue driving under any circumstances. Consult aqualified specialistworkshop.
Where necessary,also safeguardthe parkedvehicle againstrollingaway.Theyellow$indicator lamp is on andtheredIindicator lamp (USA only) orthe$indicator lamp (Can‐ada only)flashesfor approximatelyten seconds afterthe electric parking brake has been applied orreleased. Itthenremains lit or goes out. The electric parking brake is malfunctioning.
Ifthe batterychargelevel istoo low:
Chargethe battery.
Toapply:
430Display messages andwarning/indicator lamps

Engine
Display messagesPossible causes/consequences andPPSolutions
=
See Operator's Manual
*The battery is not beingcharged.
NOTEPossible engine damage ifyou continue driving
Do not continue driving under any circumstances.
Consult aqualified specialistworkshop.
Pullover andstopthevehicle safely and switch offthe engine, paying attentiontoroad and traffic conditions.
Consult aqualified specialistworkshop.
Check Coolant Level SeeOperator's Manual
*The coolant level istoo low.
NOTEEngine damageduetoinsufficient coolant
Avoid long journeyswith insufficient coolant.
Add coolant (→page 353).
=
*The batterychargelevel istoo low.
Pullover andstopthevehicle safely as soon as possible, paying attentiontoroad and traffic conditions. Do notcontinue driving under any circumstances.
Leavethe enginerunning.
Display messages andwarning/indicator lamps451

Display messagesPossible causes/consequences andPPSolutions
Stop Vehicle Leave EngineRunning
Wait untilthe display message disappears before pullingaway.
=
12 V Battery See Opera-tor's Manual
*The engine is off andthe batterychargelevel istoo low.
Switch off electrical consumersthat are notrequired.
Leavethe enginerunningfor afew minutes, or drivefor a longer distance.The battery willcharge.Ifthe message appears whilethe engine isrunning,this indicates an on-board electrical system malfunction.
Visit aqualified specialistworkshop.
=
Stop Vehicle See Opera-tor's Manual
*The battery is no longer beingcharged andthe batterychargelevel istoo low.
NOTEPossible engine damage ifyou continue driving
Do not continue driving under any circumstances.
Consult aqualified specialistworkshop.
Pullover andstopthevehicle safely as soon as possible, paying attentiontoroad and traffic conditions. Do notcontinue driving under any circumstances.
Switch offthe engine.
Consult aqualified specialistworkshop.
Cannot Start Engine SeeOperator's Manual
*Thechargelevel ofthe 48 V battery istoo low.You can no longerstartthe engine.
Switch off electrical consumersthat are notrequired.
452Display messages andwarning/indicator lamps

Display messagesPossible causes/consequences andPPSolutions
Connect a suitablecharger approvedbyMercedes-Benz with sufficientchargeoutputtothe jump-startconnec‐tion point ofthe12V battery (→page374).The 48 V batteryischarged viathevoltage converter inthevehicle.
Engine Can Now Be Started*The 48 V battery has beencharged automatically viathevoltage converter.
Startthe engine and drivethevehiclefor a whiletochargethe12V battery andthe 48 V battery.

Display messagesPossible causes/consequences andPPSolutions
48 V Battery See Opera-tor's Manual

Display messagesPossible causes/consequences andPPSolutions
Apply Brake to Shift from'P'
Depressthe brake pedal.
Service Required Do NotShift Gears Visit Dealer
*The transmission is malfunctioning. The transmission position can no longer be shifted.
Whenthe transmission is in position[, consult aqualified specialistworkshop and do notchangethe trans‐mission position.
For allother transmission positions, parkthevehicle safely.
Consult aqualified specialistworkshop or breakdown service.
Reversing Not PossibleService Required
*The transmission is malfunctioning.Reversegear can no longer be engaged.
Visit aqualified specialistworkshop.
Only Shift to 'P' when Vehi-cle is Stationary
*The transmission can only be shiftedtoposition]whenthevehicle isstationary.
Driver's Door Open &Transmission Not in P Riskof Vehicle Rolling Away
*The driver's door is not fully closed andthe transmission is in position^,\\or[.
Shiftthe transmissiontoposition]whenyou parkthevehicle.
To Engage Transmiss. Posi-tion R First Depress theBrake
*You havetriedtoswitchtotransmission position^.
Depressthe brake pedal.
Shiftthe transmissiontoposition^.
Auxiliary Battery Malfunc-tion
*The auxiliarybatteryforthe transmission is no longer beingcharged.
Visit aqualified specialistworkshop.
Display messages andwarning/indicator lamps459

Display messagesPossible causes/consequences andPPSolutions
Á
Replace Key Battery
*The SmartKeybattery is discharged.
Replacethe battery (→page64).
Á
Place the Key in theMarked Space See Opera-tor's Manual
*The SmartKeydetection function is malfunctioning.
Changethe location ofthe SmartKeyinthevehicle.
Startthevehicle withthe SmartKeyinthe marked space (→page139).
Á
Don't Forget Your Key
*Awarningtone will also sound. This messageremindsyoutotakeyour SmartKeywithyou whenyou leavethevehicle.
466Display messages andwarning/indicator lamps