warning light MERCEDES-BENZ C CLASS 2019 Repair Manual

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.
\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.
Checkthe tire pressure andthe tires.
w
Theyellow tire pressure monitoring systemwarning lamp (pressure loss/malfunction)flashesfor approximatelyoneminute andthenremains lit.
The tire pressuremonitoring system is defective.
490Display messages andwarning/indicator lamps

wWarningTireMalfunction............ 467
wWheel Sensor(s) Missing.............469
Display onthe windshieldsee Head-up Display
Distance controlseeActive Distance AssistDISTRONIC
DistancerecorderseeTrip distance
DISTRONICseeActive Distance AssistDISTRONIC
DoorChild safety lock(rear door) ...................61Locking (emergencykey) .......................72Opening (fromthe inside) ......................69Unlocking (emergencykey) ....................72Unlocking (fromthe inside) ...................69
Door control panel.....................................16
DOT,TireIdentificationNumber (TIN)... 404
DrawbarseeTow-bar system
Drinking and driving................................14 8
DriveAway Assist....................................214
Drive positionInserting ..............................................15 6
Drive program display.............................15 3
Drive programsseeDYNAMIC SELECT
Driver's seatsee Seat
Driving lightsseeAutomatic driving lights
Driving safety system.............................170ABS (Anti-lock Braking System) ...........171Active Brake Assist..............................175BAS (Brake AssistSystem) ...................172EBD (electronic brakeforce distribu‐tion) .....................................................175
ESP®Crosswind Assist........................175Overview ..............................................171Radar sensors ......................................171Responsibility ......................................17 0STEER CONTROL .................................175
Driving systemDYNAMICBODYCONTROL ..................19 6
Driving systemsee 360° CameraseeActive Blind Spot AssistseeActive Distance AssistDISTRONICseeActive EmergencyStop AssistseeActive Lane Change AssistseeActive LaneKeeping AssistseeActiveParking AssistseeActive Speed Limit AssistseeActiveSteering Assistsee AIRMATICseeATTENTION ASSISTsee Blind Spot Assistsee Cruise controlsee Driving safety systemsee HOLD functionseeParking AssistPARKTRONICseeRear view cameraseeTraffic Sign Assist
Driving tipsDrinking and driving ............................14 8General driving tips .............................148Notes on breaking-in a newvehicle .....147
Drowsiness detectionseeATTENTION ASSIST
Index505

Foil coveringRadar sensors ......................................171
FragranceseePerfume atomizer
Free software.............................................31
FrequenciesTwo-wayradio ...................................... 422
Frequency bandDialing (on-board computer) ................ 235
Front airbag (driver, front passenger).....40
Front passenger seatsee Seat
Front wheel arch.....................................12 9Installing/removingthe cover .............129
Front wheel archcoverInstalling/removing .............................12 9
Fuel...........................................................427Additives .............................................427E10 ...................................................... 426Fuelreserve......................................... 427Gasoline .............................................. 426Quality (gasoline) ................................ 426Refueling .............................................15 9
sulfur content ...................................... 426Tank content ....................................... 427
Fuel consumptionOn-board computer .............................232
Function seatsee Door control panel
Fuses........................................................ 386Beforereplacing a fuse ........................ 386Dashboard fuse box ............................ 388Fuse assignment diagram ...................386Fuse box inthe engine compartment .. 387Fuse box inthe front-passengerfoot‐well ...................................................... 388Fuse box inthe trunk ........................... 388Notes .................................................. 386
FusesseeFuses
G
Garage door openerClearingthe memory ...........................16 6Opening or closingthe door ................166Programming buttons ..........................16 3Radio equipment approval numbers ....16 6
Resolving problems .............................16 5Synchronizingtherolling code .............164
Gasstation searchStarting automatic search................... 281Switching automatic search on/off ..... 287Using automatic search....................... 287
Gasoline................................................... 426
Gearshiftrecommendation....................157
Genuine parts............................................21
Glide mode...............................................157
GloveboxLocking/unlocking ..............................105
H
Handbrakesee Electric parking brake
Handlingcharacteristics (unusual)....... 390
HANDS-FREEACCESS................................76
Hazardwarning lights.............................125
HeadrestraintFront (adjusting mechanically) .............. 96Rear (installing/removing) .....................97
508Index

Rear passenger compartment(adjusting) .............................................97
Head-up Display...................................... 237Adjusting display elements (on-boardcomputer) ............................................ 237Adjustingthe brightness (on-boardcomputer) ............................................ 237Function .............................................. 237Menu (on-board computer) .................. 237Settingthe position (on-board com‐puter) .................................................. 237Switching on/off ................................. 238
Headliner (care)....................................... 365
Heatingsee Climate control
High beamSwitching on/off .................................124
High-beam flasher...................................124
High-beam headlampsAdaptive Highbeam Assist ...................125Replacing bulbs ...................................130
Hillstart assist........................................19 5
HOLD function.........................................19 5Function/notes ...................................19 5Switching on/off .................................19 5
HoodOpening/closing ................................. 352
Hookingthe luggage net........................109
HotspotSetting up (Wi-Fi) ................................. 267
I
Identification plateEngine .................................................423Refrigerant .......................................... 430Vehicle ................................................ 423
IgnitionSwitching on (Start/Stop button) ........14 4
Ignitionkeysee SmartKey
Immobilizer................................................ 88
Indicator lampsseeWarning/indicator lamps
Individual drive programConfiguring ..........................................15 3
Selecting .............................................15 3
Insiderearview mirrorsee Exterior mirrors
Inspectionsee ASSYSTPLUS
Instrument clustersee Instrument Display
Instrument cluster lighting.................... 231
Instrument Display................................. 226Adjustingthe lighting ........................... 231Function/notes ................................... 226Instrument cluster .................................10Settingthe additionalvaluerange ....... 229Warning/indicator lamps .....................479
Intelligent Light SystemAdaptive Highbeam Assist ...................125Cornering light function .......................12 5
Interior lighting........................................127Ambient lighting ..................................12 8Reading light ........................................127Setting .................................................127Switch-off delaytime ...........................12 8
Index509

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

Language.................................................269Notes .................................................. 269Setting .................................................269
LATCH-type (ISOFIX)child seat secur‐ing systemInstalling ................................................54
Level control systemsee AIRMATIC
Light switchOverview .............................................122
Lightingsee Interior lightingsee Lights
Lights........................................................12 2Adaptive Highbeam Assist ...................125Adjustingthe instrument lighting ......... 231Automatic driving lights .......................12 3Changing bulbs ....................................12 8Combination switch.............................124Cornering light function .......................12 5Hazardwarning lights ..........................12 5Headlamprange ..................................12 3High beam ...........................................124High-beamflasher ...............................124
Light switch .........................................122Low-beam headlamps ..........................12 2Parking lights .......................................122Rearfog lamp ......................................12 2Responsibilityfor lighting systems .......122Settingtheexterior lighting switch-off delay time .......................................127Settingthe surround lighting ...............127Standing lights .....................................122Turnsignals .........................................124
LimitedWarrantyVehicle ...................................................27
LiveTraffic InformationDisplaying subscription information .... 294Displayingthe traffic map ...................294Displaying traffic incidents .................. 295Extending a subscription ..................... 294Issuing hazard alerts ........................... 295
Load index (tires).................................... 406
Load-bearing capacity (tires)................. 406
Loading.....................................................109Bag hook .............................................109Cargo tie-downrings ...........................109Definitions ...........................................409
Notes ...................................................104Roof carrier ..........................................11 3Stowage space underthe trunkfloor ...11 3
Loading guidelines..................................104
Loading information table...................... 399
LoadsSecuring ..............................................104
Locator lightingsee Surround lighting
Locking/unlockingActivating/deactivatingthe auto‐matic lockingfeature .............................71Emergencykey ......................................72KEYLESS-GO .......................................... 70Unlocking and opening doors fromthe inside ..............................................69
Low-beam headlampsReplacing bulbs ...................................130Switching on/off .................................12 2
Lubricant additivesseeAdditives
LuggageLuggage net .........................................109
Index511

Parking aidseeParking AssistPARKTRONIC
Parking AssistPARKTRONIC.................. 200Activating ............................................ 202Adjustingwarningtones ...................... 203Function .............................................. 200Side impact protection ........................ 201Switching off ....................................... 202System limitations ...............................200
Parking assistance systemsseeActiveParking Assist
Parking brakesee Electric parking brake
Parkingfor anextended period..............16 9
Parking lights...........................................122
Parking positionExterior mirrors...................................13 5Storingthe position ofthe front-passenger outside mirror usingreversegear .........................................136
PASSENGER AIRBAGstatus displayseeAutomatic front passenger frontairbag shutoff
PayloadCalculationexample ............................ 401Determiningthe maximum .................. 400
PerfumeseePerfume atomizer
Perfume atomizer....................................14 2Inserting/removingtheflacon .............142Setting .................................................141
Perfume vialseePerfume atomizer
Permittedtowing methods.....................381
Personalizationsee User profile
Pets in thevehicle.....................................62
Phone booksee Contacts
PictureformatsseeVideo mode
Picture settingsseeVideo mode
PIN protectionActivating/deactivating .......................270
Plastic trim (Care)................................... 365
Playback optionsSelecting ............................................. 333
POISelecting ............................................. 280
POI symbolsSelecting ............................................. 298
Power supplySwitching on (Start/Stop button) ........14 4
Powerwasher (care)...............................359
Power windowssee Side windows
PRE-SAFE®(anticipatory occupantprotection).................................................47Function ................................................47
PRE-SAFE®Sound .................................47Reversing measures .............................. 48
PRE-SAFE®PLUS (anticipatoryoccu‐pant protection plus)................................ 48Function ................................................ 48Reversing measures .............................. 48
516Index

RemoteOnlineChargingthe battery ............................146Cooling or heatingthevehicle inte‐rior .......................................................146Startingthevehicle ..............................147
Replacing a bulbsee Changing bulbs
Replacing bulbsHigh-beam headlamps .........................13 0Installing/removing cover (frontwheel arch) ..........................................12 9Low-beam headlamps .........................130Opening/closingthe side trim pan‐els .......................................................130Turnsignal light (front) ........................13 0
Reporting malfunctionsrelevanttosafety..........................................................27
Rescue card............................................... 28
ReserveFuel ..................................................... 427
Reset function (multimedia system)......274
Residual heat...........................................141
Restoring (factory settings)seeReset function (multimedia system)
Restraint system.......................................33Basic instructionsforchildren ...............48Function in an accident ......................... 34Functionality .......................................... 34Malfunction ........................................... 34Protection ..............................................33Reduced protection ...............................33Self-test ................................................. 34Warning lamp ........................................ 34
ReversegearInserting ..............................................15 5
Reversing lights (changing bulbs)..........131
Rims (Care).............................................. 364
Roadside Assistance................................. 23
Roadside Assistance callsee Mercedes me connect
Rollawayprotectionsee HOLD function
Roller sunblind...........................................78Rear window.......................................... 79Side windows........................................78
Roof carrierAttaching .............................................113Loading ................................................11 3
Roof load.................................................. 432
Route................................................ 284, 286Activating a commuterroute ...............286Calculating .......................................... 284Displaying destination information ...... 286Planning ...............................................281Selecting a type .................................. 285Selecting an alternativeroute .............286Selecting notifications ......................... 286Selecting options ................................ 285Startingthe automatic servicesta‐tion search.......................................... 287Switchingthe automaticgasstationsearchon/off ...................................... 287Using automaticgasstation search..... 287Withintermediate destinations ...........282
Route guidance....................................... 288Canceling ............................................. 291Changing direction .............................. 288Destinationreached ............................ 290From an off-road location .................... 292Lanerecommendations ....................... 289
518Index