check engine MERCEDES-BENZ E CLASS 2019 User Guide

Parkthevehicle on a level surface.
Checkthe coolanttemperature display intheinstrument cluster.The coolanttemperature must be below158 °F (70 °C).
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:(→page 423)
Addingwasherfluidtothe windshieldwasher system
\nWARNINGRisk 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.
\nWARNINGDanger 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.
\nWARNING‑ 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.
354Maintenance 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.
\nWARNINGRisk 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.
\nWARNINGRisk 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.
Breakdown assistance373

Display messagesPossible causes/consequences andPPSolutions
Active Brake Assist Func-tions Currently Limited SeeOperator's Manual
*Vehicles withthe Driving AssistancePackage:Active Brake Assistwith cross-traffic function, EvasiveSteering
Assist or PRE‑SAFE®PLUS aretemporarily unavailable or only partiallyavailable.
Vehicles withoutthe Driving Assistance package:Active Brake Assististemporarily unavailable.
The ambient conditions are outsidethe system limits (→page170).
Drive on.As soon asthe ambient conditions are withinthe system limits,the system will becomeavailable again.
Ifthe display message does not disappear,stopthevehicle while paying attentiontoroad and traffic conditionsandrestartthe engine.
u
SRS Malfunction ServiceRequired
*Therestraint system isfaulty (→page 32).
\nWARNINGRisk of injuryorfatal injury duetoa malfunction intherestraint system
Iftherestraint system is malfunctioning,restraint system components may be triggered unintentionally ormight not be triggered at all intheevent of an accident. This may affectthe EmergencyTensioning Device orairbag,forexample.
Havetherestraint systemchecked andrepaired immediately at aqualified specialistworkshop.
Detection of arestraint system malfunction:
RTheurestraint systemwarning lamp does not light up whenthe ignition is switched on.
RTheurestraint systemwarning lamp lights up continuously orrepeatedly during a journey.Visit aqualified specialistworkshop immediately.
Displaymessages andwarning/indicator lamps441

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
Untilthen, manually setthe transmissiontoposition]beforeyou switchoffthe engine.
Before leavingthevehicle, applythe electric parking brake.
Tires
Display messagesPossible causes/consequences andPPSolutions
Check Tire Pressure Soon*Canada only:
The tire pressure losswarning system has detected a significant loss in pressure.
\nWARNINGRisk 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.
Observetherecommended tire pressure.
Adjustthe tire pressure if necessary.
Stopthevehicle, paying attentiontoroad and traffic conditions.
460Display messages andwarning/indicator lamps

Warning/indicator lampPossible causes/consequences andPPSolutions
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.
\nWARNINGThereisrisk 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.
Observethe messages onthe multifunction display.
Visit aqualified specialistworkshop.

Warning/indicator lampPossible causes/consequences andPPSolutions
ESP®warning lamp lightsup
Other driving systems and driving safety systems may also malfunction.
\nWARNINGRisk of skidding if ESP®is malfunctioning
If ESP®is malfunctioning, ESP®cannot carryoutvehiclestabilization. In addition,other driving safety systems areswitched off.
Drive on carefully.
HaveESP®checked at aqualified specialistworkshop.
Drive on carefully.
Observethe messages onthe multifunction display.
Visit aqualified specialistworkshop.
u
Restraint systemwarninglamp
Theredrestraint systemwarning lamp is lit whilethe engine isrunning.
Therestraint system isfaulty (→page 32).
\nWARNINGRisk of injuryorfatal injury duetoa malfunction intherestraint system
Iftherestraint system is malfunctioning,restraint system components may be triggered unintentionally or might notbe triggered at all intheevent of an accident. This may affectthe EmergencyTensioning Device or airbag,forexam‐ple.
Havetherestraint systemchecked andrepaired immediately at aqualified specialistworkshop.
Drive on carefully.
Display messages andwarning/indicator lamps47 9

Warning/indicator lampPossible causes/consequences andPPSolutions
Observethe messages onthe multifunction display.
Ifthe coolanttemperature display is atthe lower end ofthetemperature scale:
Consult aqualified specialistworkshop.
or
Exitthevehicle andkeep a safe distance from it untilthe engine has cooled down.
Checkthe coolant level (→page 353).
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.
484Display messages andwarning/indicator lamps

Refrigerant ...........................................424Refrigerantfilling capacity ...................425Removing condensation fromthewindows..............................................13 4Residual heat .......................................13 4Settingthe air distribution ...................131Settingthe airflow...............................131Settingthe climatestyle ......................133Settingthe fragrance system ...............13 4Settingthetemperature .......................131Switchingtherear windowdefrosteron/off ..................................................131Ventilatingthevehicle (convenienceopening) ................................................ 79
ClimatestyleFunction ..............................................13 3Setting .................................................13 3
Cockpit.........................................................6Overview .................................................6
Coffee cup symbolseeATTENTION ASSIST
COMANDsee Multimedia system
COMANDTouchManaging devices ................................ 262
Combination switch.................................11 8
Compass.................................................. 294
Computersee On-board computer
ConnectionstatusDisplaying ............................................319Overview ..............................................318
ConnectivitySwitching transmission ofthevehicleposition on/off .................................... 259
Contacts................................................... 303Calling up ............................................ 304Deleting ............................................... 305Downloading (from mobile phone) ...... 303Importing ............................................ 304Importing (overview) ...........................304Information .......................................... 303Making a call ....................................... 305Nameformat .......................................304Options ................................................ 305Storing ................................................ 305
ControllerOperating ............................................ 250
Convenience closingfeature.................... 79
Convenience opening................................ 79
Coolant (engine)Check level .......................................... 353Filling capacity .................................... 423Notes .................................................. 423
Coolingsee Climatecontrol
CopyrightLicenses ................................................ 30Trademarks............................................ 30
Cornering light function..........................12 0
CrossTraffic Alert...................................208
Crosswind AssistFunction/notes ...................................17 0
Cruise control..........................................175Buttons ................................................176Calling up a speed ...............................176Function ...............................................175Requirements: .....................................176Selecting ..............................................176
494Index

EBD (electronic brakeforce distribu‐tion)Function/notes ...................................17 0
ECO AssistDisplaying ............................................14 8Function/notes ...................................14 6
ECO displayFunction ..............................................14 6Resetting ............................................. 227
ECOstart/stop function.........................14 4Automatic enginestart ........................14 4Automatic enginestop .........................144Method of operation ............................144Switching off/on .................................14 6
Electric parking brake.............................162Applying automatically ........................16 2Applying orreleasing manually ............16 4Emergency braking ..............................16 4Releasing automatically .......................163
ElectronicStability Program
see ESP®(ElectronicStability Program)
EmergencyOverview ofthe help functions ..............16Reflective safetyvest.......................... 364
Emergency braking.................................164
Emergency brakingseeBAS (Brake AssistSystem)
Emergency call systemsee Mercedes-Benz emergency call system
Emergency enginestart......................... 380
EmergencykeyLocking a door ....................................... 70Unlocking a door ...................................70
Emergency operation modeStartingthevehicle .............................13 9
EmergencyreleaseTrunk lid (from inside) ............................76
EmergencyTensioning DevicesActivation .............................................. 32
ENERGIZING comfortOverview of programs .........................268Startingthe program ........................... 269
EngineECOstart/stop function ......................144Engine number .....................................417Starting (emergency operationmode) ..................................................13 9
Starting (RemoteOnline) ......................141Starting (start/stop button) .................139Starting assistance ..............................374Switching off (start/stop button) ........15 6
Engine dataDisplaying ............................................14 9
Engine number.........................................417
Engine oil.................................................352Additives .............................................. 421Capacity .............................................. 422Checkingthe oil level usingthe oildipstick ................................................ 351Checkingthe oil level usingthe on-board computer ................................... 351MB-Freigabe or MB-Approval ...............422Quality ................................................. 422Topping up ...........................................352
EnteringcharactersFunction/notes ................................... 255
EQ boostOperating safety .................................... 22Qualified specialistworkshop ................25
ESC (ElectronicStability Control)
see ESP®(ElectronicStability Program)
Index501