engine MERCEDES-BENZ C CLASS 2019 Manual Online

Display messagesPossible causes/consequences andPPSolutions
Pullover andstopthevehicle safely as soon as possible, paying attentiontoroad and traffic conditions. Do notcontinue driving under any circumstances.
Switch offthe engine.
Add1.1 US qt (1 l) engine oil.
Checkthe engine oil level.
Top up engine oil (page 355).
Notes on engine oil (page 427).

Display messagesPossible causes/consequences andPPSolutions
Check Engine Oil Level(Add 1 quart)NOTEEngine damagecausedbydriving with insufficient engine oil
Avoid long journeyswith insufficient engine oil.
When nextrefueling, add 1quart of engine oil.
Top up engine oil (page 355).
Notes on engine oil (page 427).

Display messagesPossible causes/consequences andPPSolutions
Transmission MalfunctionStop
Pullover andstopthevehicle safely as soon as possible, paying attentiontoroad and traffic conditions.
Switchthe transmissiontoposition].
Consult aqualified specialistworkshop.
N Permanently Active Riskof Rolling Away
*Whilethevehicle isrolling or whileyou are driving,the transmission has been shiftedtoposition\\.
Depressthe brake pedaltostop and, whenthevehicle isstationary,shiftthe transmissiontoposition].
Tocontinueyour journey,shiftthe transmissiontoposition[or^.
Stop Vehicle Leave EngineRunning Wait TransmissionCooling
*The transmission isoverheating. Pullingawaymay betemporarily impaired or not possible.
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.
To Deselect P or N,Depress Brake and StartEngine
*You haveattemptedtoshiftthe transmission out of position]or\\into another transmission position.
Depressthe brake pedal.
Startthe engine.
Apply Brake to Shift from'P'
*You haveattemptedtoshiftthe transmission out of position]and into another transmission position.
Depressthe brake pedal.
Service Required Do NotShift Gears Visit Dealer
*The transmission is malfunctioning. The transmission position can no longer be shifted.
464Display messages andwarning/indicator lamps

Display messagesPossible causes/consequences andPPSolutions
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.
Untilthen, manually setthe transmissiontoposition]beforeyou switchoffthe engine.
Before leavingthevehicle, applythe electric parking brake.
Display messages andwarning/indicator lamps465

Warning and indicator lamps
Overview ofwarning and indicator lamps
Some systems will performa self-test whentheignition is switched on. Somewarning and indi‐cator lamps may brieflylight up orflash. Thisbehavior is non-critical. Thesewarning and indi‐cator lamps indicate a malfunction only iftheylight up orflash afterthe engine has beenstar‐ted or during a journey.
Instrument Display (standard)
Widescreen Cockpit Instrument Display
Depending onthe display setting,the positionsofthe indicator lamps onthe Instrument Displaymay differ fromtheexample shown.
Warning and indicator lamps:XLow beam (page122)
`Parking lights (page122)
WHigh beam (page124)
>=Turnsignal indicator(page124)
^Rearfog light(page122)
uRestraint system (page 480)

Warning/indicator lampPossible causes/consequences andPPSolutions
\nWARNINGRisk of an accident duetolow brakefluid level
Ifthe brakefluid level istoo low,the braking effect andthe brakingcharacteristics may be impaired.
Pullover andstopthevehicle safely as soon as possible, paying attentiontoroad and traffic conditions. Donot continue driving under any circumstances.
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.
\nWARNINGThereisrisk of skidding if EBD or ABS is malfunctioning
If EBD or ABS is malfunctioning,the wheels could lock when braking
Display messages andwarning/indicator lamps481

Warning/indicator lampPossible causes/consequences andPPSolutions
Restraint systemwarninglamp\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.
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 (page 38).
Ifyou haveplaced objects onthe front passenger seat,the seat beltwarning lamp mayremain lit.
Display messages andwarning/indicator lamps485

Warning/indicator lampPossible causes/consequences andPPSolutions
Function ofActive Brake Assist .
Engine
Warning/indicator lampPossible causes/consequences andPPSolutions

Warning/indicator lampPossible causes/consequences andPPSolutions
Intheevent of afireinthe engine compartment,keepthe hood closed and callthefireservice.
Pullover andstopthevehicle safely and switch offthe engine, paying attentiontoroad and traffic conditions. Donot continue driving under any circumstances.
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 357).
Make surethatthe air supplytotheradiator is not obstructed.
Avoiding high loads onthe engine, drivetothe nearestqualified specialistworkshop. In doing so, ensurethatthecoolanttemperature displayremains belowthered area.
Display messages andwarning/indicator lamps489

Active Service System PLUSsee ASSYSTPLUS
Active Speed Limit Assist.......................187Display.................................................187Function ..............................................187
ActiveSteering Assist.............................189Activating/deactivating .......................191Active EmergencyStop Assist .............193Active Lane Change Assist...................191Displays inthe Instrument Display ......19 3Function ..............................................189System limitations ...............................189
Adaptive cruise controlseeActive Distance AssistDISTRONIC
Adaptive Highbeam AssistFunction ..............................................12 5Switching on/off .................................12 6
AdditionalvaluerangeSetting display content ........................ 229
Additives.................................................. 427Engine oil ............................................. 427Fuel ..................................................... 427
Additives (engine oil)seeAdditives
Additives (fuel)seeFuel
Address booksee Contacts
Adjusting the balance/fader
Burmester®surround sound system ... 350
Adjusting the headlamprange...............12 3
Adjusting the soundfocus
Burmester®surround sound system ... 350
Adjusting treble, mid-range and basssettings
Burmester®surround sound system ... 350
ADS PLUS damping systemsee AIRMATIC
After-sales service centersee ASSYST PLUS
Air bagReduced protection ...............................42
Air conditioning systemsee Climate control
Air distributionSetting .................................................138
Air freshener systemseePerfume atomizer
Air inletsee Air-water duct
Air pressureseeTirepressure
Air suspensionsee AIRMATIC
Airvents...................................................14 3Adjusting (front) ..................................14 3Adjusting (rear) ....................................14 3
Airventssee Airvents
Air-recirculation mode.............................141
Air-water duct.......................................... 358Keeping free ........................................358
Airbag.........................................................40Activation .............................................. 34Front airbag (driver, front passenger) ....40Installation locations .............................40Knee airbag ........................................... 40
494Index