service MERCEDES-BENZ C CLASS 2019 Repair Manual

Display messagesPossible causes/consequences andPPSolutions
Before openingthe hood, allowthe enginetocool down.
Intheevent of afireinthe engine compartment,keepthe hood closed and callthefireservice.
Wait untilthe engine has cooled down.
Make surethatthe air supplytotheradiator is not obstructed.
Avoiding high loads onthe engine, drivetothe nearestqualified specialistworkshop. In doing so, ensurethatthe coolanttemperature displayremains belowthered marking.

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/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

Overview ............................................... 40PASSENGER AIRBAG indicator lamp .....44Protection ..............................................41Side airbag ............................................ 40Window curtain airbag ...........................40
AirflowSetting .................................................138
AIRMATIC..................................................197Setting .................................................19 8Suspension ..........................................197
AlarmseePanic alarm
Alarm systemseeATA (anti-theft alarm system)
All-wheel drivesee 4MATIC
AlternativerouteseeRoute
Ambient lightingSetting (multimedia system) ................128
AndroidAuto............................................316Connecting a mobile phone .................317Ending ..................................................318
Information ..........................................317Overview ..............................................316Sound settings .....................................317Transferredvehicle data ......................318
AnimalsPets inthevehicle ................................. 62
Anti-lock braking systemsee ABS (Anti-lock Braking System)
Anti-skidchainssee Snowchains
Anti-theft alarmsystemseeATA (anti-theft alarm system)
Anti-theft protectionImmobilizer ............................................ 88
Anti-theft protectionseeATA (anti-theft alarm system)
Anticipatory occupant protection
see PRE-SAFE®(anticipatory occu‐pant protection)
see PRE-SAFE®PLUS (anticipatoryoccupant protection plus)
Apple CarPlay™........................................315
Connecting an iPhone®........................315
Ending ..................................................316Notes ...................................................315Overview ..............................................315Sound settings .....................................316Transferredvehicle data ......................318
AshtrayFront center console ............................116Rear passenger compartment ..............11 7Using ....................................................11 6
Assistance systemssee Driving safety system
Assistant displayMenu (on-board computer) .................. 231
ASSYST PLUS........................................... 351Battery disconnection periods .............352Displayingthe service due date ........... 351Function/notes .................................... 351Regular maintenancework.................. 351Special servicerequirements .............. 351
ATA(anti-theft alarmsystem).................. 88Deactivatingthe alarm .......................... 89Function ................................................ 88
ATTENTION ASSIST..........................215,217Function ...............................................215
Index495

Compass...................................................301
Computersee On-board computer
ConnectionstatusDisplaying ............................................ 325Overview .............................................325
ConnectivitySwitching transmission ofthevehicleposition on/off .................................... 265
Contacts................................................... 309Calling up .............................................310Deleting ...............................................311Downloading (from mobile phone) .......310Importing .............................................311Importing (overview) ............................310Information .......................................... 309Making a call ........................................311Nameformat ........................................310Options ................................................311Storing .................................................311
ControllerOperating ............................................ 256
Convenience closingfeature.................... 82
Convenience opening................................81
Coolant (engine)Check level .......................................... 357Filling capacity .................................... 429Notes .................................................. 429
Coolingsee Climatecontrol
CopyrightLicenses ................................................31Trademarks............................................31
Cornering light function..........................12 5
CrossTraffic Alert....................................215
Crosswind AssistFunction/notes ....................................175
Cruise control..........................................181Buttons ................................................182Calling up a speed ...............................182Function ...............................................181Requirements: .....................................182Selecting .............................................182Setting a speed ...................................182Storing a speed ...................................182Switching off .......................................182
Switching on ........................................182System limitations ...............................181
Cup holderRear passenger compartment ..............11 5
Cup holder inthe center consoleInstalling/removing (automatictransmission) .......................................115
Customer Assistance Center (CAC).........27
CustomerRelations Department.............27
D
Dashboardsee Cockpit
Dashboard lightingsee Instrument cluster lighting
Data acquisitionVehicle .................................................. 28
Data import/export................................ 269Function/notes ................................... 269Importing/exporting ...........................270
DatastorageElectronic control units .........................28Online services ...................................... 29
500Index

Intermediate destinationCalculating aroute with intermediatedestinations ........................................ 282Entering ............................................... 281Modifying ............................................. 281Starting an automaticgasstationsearch.................................................. 281Startingthe automatic servicesta‐tion search.......................................... 287
InternetCalling up aweb page .........................326Closingthe browser ............................327Deleting a bookmark ...........................327Deleting browser data .........................327Managing bookmarks.......................... 327
InternetconnectionCommunication module function .........324Connectionstatus ...............................325Displayingthe connectionstatus ........ 325Establishing .........................................324Information .......................................... 324Restrictions ......................................... 324
InternetradioCalling up ............................................ 328Deletingstations .................................328
Logging out ......................................... 329Overview ............................................. 328Registering .......................................... 329Savingstations .................................... 328Selecting and connectingtoastation.............................................................328Selectingstream .................................329Setting options ....................................329Terms of use ........................................329
IonizationActivating/deactivating (multimediasystem) ................................................141
iPhone®
see Apple CarPlay™see Mercedes-Benz Link
J
JackStorage location ...................................414
Jump-start connection............................379General notes ......................................377
K
KEYLESS-GOLockingthevehicle ................................ 70Problem .................................................70Unlocking setting .................................. 65Unlockingthevehicle ............................70
Kickdown.................................................157Using ...................................................157
Knee airbag................................................ 40
L
Labeling (tires)seeTirelabeling
Lampsee Interior lighting
Lamps (Instrument Display)seeWarning/indicator lamps
Lane detection (automatic)seeActive LaneKeeping Assist
LaneKeeping AssistseeActive LaneKeeping Assist
51 0Index

Media sourceSelecting (on-boardcomputer) ............ 235
Memory functionOperating ............................................102Outside mirror — Calling upstoredsettings ...............................................102Outside mirror —Storing settings ........102Seat — Calling upstored settings .........102Seat —Storing settings ........................102Steering wheel — Calling up savedsettings ...............................................102Steering wheel — Saving settings .........102
Menu (on-board computer)Assistant display.................................. 231Designs ............................................... 229Head-up Display .................................. 237Maintenance ........................................ 231Media .................................................. 235Navigation ...........................................233Overview ............................................. 228Radio ...................................................235Telephone ............................................ 236Trip ...................................................... 232
Mercedes me connect.............................319Accident and breakdown manage‐ment .................................................... 320Arranging a service appointment ........ 320Callingthe Mercedes-Benz CustomerCenter ..................................................319Information ..........................................318Making a call viatheoverhead con‐trol panel .............................................319Service call with the me button ........... 320Transferred data ..................................321
Mercedes-AMGvehiclesNotes ...................................................14 4
Mercedes-Benz AppsCalling up ............................................ 325Usingvoice control .............................. 325
Mercedes-Benz emergency call sys‐tem............................................................321Automatic emergency call ................... 322Information .......................................... 321Information on data processing ...........323Manual emergency call ........................ 322Overview .............................................. 321
Mercedes-Benz Link................................314Connecting ..........................................314Ending ..................................................314Overview ..............................................314Using ...................................................314
Message (multifunction display)see Display message
Message memory....................................433
MessagesVoice commands (Voice Control Sys‐tem) ..................................................... 250
MessagesseeText messages
Mirrorssee Exterior mirrors
Mobile phoneWirelesscharging ................................12 0
Mobile phonesee AndroidAutosee Apple CarPlay™see Mercedes-Benz Linksee SecondtelephoneseeTelephone
Index513

O
Occupant safetyPets inthevehicle ................................. 62
Occupant safetysee AirbagseeAutomatic front passenger frontairbag shutoff
see PRE-SAFE®(anticipatory occu‐pant protection)
see PRE-SAFE®PLUS (anticipatoryoccupant protection plus)seeRestraint systemsee Seat belt
OdometerseeTotal distance
Oilsee Engine oil
On-board computer................................. 228Assistance graphic menu ..................... 231Displayingthe service due date ........... 351Head-up Display menu ........................ 237Media menu ........................................235Menu designs ...................................... 229Menuoverview .................................... 228
Multifunction display ...........................230Navigation system menu ..................... 233Operating ............................................ 228Radio menu .........................................235Service menu ...................................... 231Telephone menu .................................. 236Trip menu ............................................ 232
On-boarddiagnostics interfacesee Diagnostics connection
Open-source software...............................31
Openingthe trunk lid usingyourfootHANDS-FREEACCESS ...........................76
OperatingfluidsAdditives (fuel) .................................... 427Brakefluid ...........................................428Coolant (engine) .................................. 429Engine oil ............................................. 427Fuel (gasoline) .....................................426Notes .................................................. 425Refrigerant (air conditioning system) ... 430Windshieldwasherfluid ...................... 429
Operating safetyDeclaration of conformity (wirelessvehicle components) ............................. 25
Information ............................................24
Operating systemsee On-board computer
Operator's ManualVehicle equipment ................................. 22
Operator's Manual (digital)......................20
Overhead control panelMaking calls (Mercedes me connect) ..319Overview ................................................14
P
Paint code................................................ 423
Paintwork (cleaning instructions).......... 361
Panic alarm................................................ 65Activating/deactivating ......................... 65
Panoramic sliding sunroofsee Sliding sunroof
ParkpositionInserting ..............................................15 5Selecting automatically.......................15 5
Parkingsee Electric parking brake
Index515