heating MERCEDES-BENZ C CLASS 2019 User Guide

Tirepressure
Notes on tire pressure
\nWARNINGRisk of accident duetoinsuf‐ficient orexcessive tire pressure
Underinflated oroverinflated tires posethefollowingrisks:
RThe tires may burst, especially astheload andvehicle speed increase.
RThe tires maywearexcessively and/orunevenly,which maygreatlyimpair tiretraction.
RThe drivingcharacteristics, aswell assteering and braking, may be greatlyimpaired.
Comply withtherecommended tirepressure andcheckthe tire pressure ofall tires includingthe spare wheelregu‐larly:
Rat least once a month
Rwhenthe loadchanges
Rbefore embarking on a longer journey
Rif operating conditionschange, e.g. off-road driving
Adjustthe tire pressure as necessary.
Driving withtire pressurethat istoo high ortoolow can:
RShortenthe service life ofthe tires.
RCause increased tire damage.
RAdversely affect drivingcharacteristics andthus driving safety,e.g. dueto hydroplaning.
\nWARNINGRisk of an accident duetoinsufficient tire pressure
Tires with pressurethat istoo low canover‐heat and burstas aresult.
In addition,theyalso suffer fromexcessiveand/or irregularwear, which can significantlyimpairthe braking properties andthe han‐dlingcharacteristics.
Avoidexcessively low tire pressures inallthe tires, includingthe spare wheel.
Tirepressure which istoo low can cause:
RTiredefects as aresult ofoverheating
RImpaired handlingcharacteristics
RIrregularwear
RIncreased fuel consumption
\nWARNINGRisk of accident fromexces‐sive tire pressure
Tires withexcessively high pressure canburstbecausetheyare damaged more easilybyhighwayfill, pot holesetc.
In addition,theyalso suffer from irregularwear, which can significantly impairthe brak‐ing properties andthe handlingcharacteris‐tics.
Avoidexcessively high tire pressures inallthe tires, includingthe spare wheel.
Excessively high tire pressure canresult in:
RIncreased braking distance
RImpaired handlingcharacteristics
RIrregularwear
392Wheels and tires

and one-half times aswell onthe governmenttesttrack as a tire graded100.
Therelative performance of tires depends uponthe actual conditions oftheir use, however,andmay depart significantly fromthe norm duetovariations in driving habits, service practices anddifferences inroadcharacteristics and climateconditions.
Tractiongrade
\nDANGERRisk of accident duetoinade‐quate traction
The tractiongrade assignedtothis tire isbased onstraight-ahead braking tractiontests, and does not include either accelera‐tion, cornering,hydroplaning or peak tractioncharacteristics.
Always adaptyour drivingstyle anddrive at a speedtosuitthe prevailingtraffic andweather conditions.
NOTEDamagetothe drivetrain fromwheelspin
Avoid wheelspin.
The traction grades – from highesttolowest –are AA,A,B and C. Those gradesrepresentthetire's abilitytostop onwet pavement as meas‐ured under controlled conditions on specifiedgovernmenttestsurfaces made of asphalt andconcrete.
Temperaturegrade
\nWARNINGRisk of accident from tireoverheating and tirefailure
Thetemperature gradeforthis tire is estab‐lishedfor a tirethat is properly inflated andnotoverloaded. Excessive speed, underinfla‐tion, orexcessive loading, either separatelyor in combination, can causeexcessive heatbuild-up and possible tirefailure.
Observetherecommended tire pres‐sures andregularlycheckthe tire pres‐
sure of all tires includingthe sparewheel.
Adjustthe tire pressure as necessary.
Thetemperature grades are A (the highest), Band C. Theyrepresentthe tire'sresistancetothegeneration of heat and its abilitytodissipateheat whentested under controlled conditions ona specified indoor laboratorytestwheel. Sus‐tained hightemperature can causethe materialofthe tiretodegenerate andreduce tire life, andexcessivetemperature can leadtosudden tirefailure. Grade C correspondstoa level of per‐formance which all passenger car tires mustmeet undertherequirements ofthe US Depart‐ment ofTransportation.
DOT,TireIdentificationNumber (TIN)
US tireregulationsstipulatethateverytire man‐ufacturer orretreader mustimprint a TIN in oronthe sidewall of each tire produced.
404Wheels and tires

Rat aqualified specialistworkshop
Coolant
Notes on coolantObservethe notes on operatingfluids(page 425).
\nWARNING‑ Risk offireand injury fromantifreeze
If antifreeze comes into contact withhotcomponent parts inthe engine compart‐ment, it may ignite.
Allowthe enginetocool down beforeadding antifreeze.
Makesurethat no antifreeze spills outnexttothefiller opening.
Thoroughly clean off any antifreezefrom component parts beforestartingthevehicle.
NOTEDamagecausedbyincorrect cool‐ant
Only add coolantthat has been pre‐mixed withtherequired antifreeze pro‐tection.
Information on coolant isavailable atthefol‐lowing locations:
RInthe Mercedes-Benz SpecificationforOperating Fluids310.1
-Athttp://bevo.mercedes-benz.com
-Inthe Mercedes-Benz BeVo app
RAtaqualified specialistworkshop
NOTEOverheating at high outsidetem‐peratures
If an inappropriate coolant is used,theengine cooling system is not sufficiently pro‐tected againstoverheating and corrosion athigh outsidetemperatures.
Always use coolant approvedbyMercedes-Benz.
Observethe instructions intheMercedes-Benz Specificationsfor Oper‐ating Fluids310.1.
Havethe coolantregularlyreplaced at aqualifiedspecialistworkshop.
The proportion of corrosion inhibitor/antifreezeconcentrate inthe engine cooling system shouldbe:
Ra minimum of 50% (antifreeze protectiondowntoapproximately -35 °F (-37 °C))
Ra maximum of 55% (antifreeze protectiondownto-49 °F (-45 °C))
Coolant capacity
ModelCapacity
All models9.1 US qt (8.6 liters)
Notes on windshieldwasher fluid
Observethe notes on operatingfluids(page 425).
Technical data429

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
w
Wheel Sensor(s) Missing
*The tire pressure sensor signal is missing from one or more tire(s). The pressure ofthe affected tire is not dis‐played.
Havethe defective tire pressure sensorreplaced at aqualified specialistworkshop.
w
Tire Pressure Monitor Inop-erative No Wheel Sensors
*The wheels installed do not havesuitable tire pressure sensors. The tire pressure monitoring system is deactivated.
Install wheels with suitable tire pressure sensors.
w
Tire Press. Monitor Inopera-tive
*The tire pressure monitoring system is defective.
\nWARNINGThereis arisk of an accident ifthe tire pressure monitoring system is malfunctioning
Ifthe tire pressure monitoring system is malfunctioning, it is not abletoissue awarning ifthere is pressure lossin one or more ofthe tires.
Underinflated tires may,forexample, impairthe driving,steering and brakingcharacteristics.
Havethe tire pressure monitoring systemchecked at aqualified specialistworkshop.
Visit aqualified specialistworkshop.
Tires Overheated*At least one tire isoverheating. The affected tires are displayed inred.Attemperatures closetothe limitvalue,thetires are displayed inyellow.
Displaymessages andwarning/indicator lamps469

Display messagesPossible causes/consequences andPPSolutions
Drive more slowly.
Decrease Speed*At least one tire isoverheating. The affected tires are displayed inred.Attemperatures closetothe limitvalue,thetires are displayed inyellow.
\nWARNINGRisk of an accident from driving withoverheated tires
Overheated tires may burst, particularly at high speeds.
Reduce speed sothatthe tires cool down.
Reduce speed sothatthe tires cool down.
Check Tire Pressure ThenRestart Run Flat Indicator
*Canada only:
The tire pressure losswarning systemgenerated a displaymessageand has not beenrestarted since.
Whenthe tire pressure is correct,restartthe tire pressure losswarning system (page 398).
Run Flat Indicator Inopera-tive
*Canada only:
The tire pressure losswarning system is malfunctioning.
Visit aqualified specialistworkshop.
47 0Displaymessages andwarning/indicator lamps

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

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

Seat heatingActivating/deactivating ......................... 98
SeatventilationSwitching on/off................................... 99
Secondtelephone...................................305Connecting .......................................... 305Features .............................................. 305
Selecting agearsee Changinggears
Selector leversee DIRECT SELECT lever
Self-testAutomatic front passenger front air‐bag shutoff ............................................44
Sensors (Care)......................................... 364
Service centersee Qualified specialistworkshop
Service interval displaysee ASSYSTPLUS
Servicestation searchStarting automatic search................... 287
Setting a speedsee Cruise control
Setting summer time.............................. 264
Setting the dateformat.......................... 265
Settingthe distance unit........................ 269
Settingthe map scalesee Map
Shift paddlesseeSteering wheel paddle shifters
ShiftinggearsGearshiftrecommendation ..................157
Short messagesseeText messages
Side airbag.................................................40
Side impact protection...........................201
Side windows............................................. 80Child safety lockintherearpassenger compartment .......................62Closing .................................................. 80Closing usingthe SmartKey................... 82Convenience closingfeature .................82Convenience opening ............................81Opening .................................................80Opening withthe SmartKey...................81Problem .................................................82
Roller sunblind .......................................78
Size designation (tires)........................... 406
Sliding sunroof.......................................... 83Automatic functions .............................. 86Closing .................................................. 83Closing usingthe SmartKey................... 82Opening ................................................. 83Opening with the SmartKey...................81Problem .................................................86Rain closing function .............................86
SmartKey...................................................64Acoustic lockingverification signal ....... 65Battery .................................................. 66Energy consumption .............................. 65Features ................................................64Keyring attachment .............................. 66Mechanicalkey ...................................... 66Overview ...............................................64Panic alarm ........................................... 65Problem .................................................67Unlocking setting .................................. 65
SmartKey functionsDeactivating .......................................... 65
520Index

Data acquisition .................................... 28Datastorage .......................................... 28Diagnostics connection .........................25Equipment ............................................. 22LimitedWarranty ...................................27Locking (automatically) ..........................71Locking (fromthe inside) ....................... 69Locking (KEYLESS-GO) .......................... 70Locking/unlocking (emergencykey) ......72Lowering ............................................. 420Maintenance ......................................... 23Parkingfor anextended period ............16 9Problem notification ..............................27QR coderescue card ............................. 28Qualified specialistworkshop ................26Raising .................................................416Standby mode function .......................170Starting (emergency operationmode) ..................................................14 5Starting (RemoteOnline) .....................147Starting (start/stop button) .................145Switching off (start/stop button) .........161Towing .................................................225Unlocking (fromthe inside) ...................69Unlocking (KEYLESS-GO) .......................70Ventilating (convenience opening) .........81
Voice commands (Voice Control Sys‐tem) ..................................................... 251
Vehicle dataDisplaying (DYNAMIC SELECT) ............154Roof load ............................................. 432TransferringtoAndroidAuto™ .............318TransferringtoApple CarPlay™ ...........318Turningradius ...................................... 431Vehicle height ...................................... 431Vehicle length ...................................... 431Vehicle width ....................................... 431Wheelbase ...........................................431
Vehicle datastorageEvent datarecorders .............................30Multimedia system/Mercedes meconnect .................................................30
Vehicle dimensions................................. 431
Vehicle electronicsNotes ................................................... 421Two-wayradios .................................... 421
Vehicle identification numbersee VIN
Vehicle identification plate.................... 423Paint code ...........................................423
VIN ...................................................... 423
Vehicle interiorCooling or heating (RemoteOnline) .....14 6
Vehiclekeysee SmartKey
Vehicle maintenancesee ASSYST PLUS
Vehicle operationOutsidethe USA or Canada ...................23
Vehicle positionSwitching transmission on/off ............ 265
Vehicletool kit.........................................371TIREFIT kit ............................................371Towingeye .......................................... 385
VentilatingConvenience opening ............................81
Ventilationsee Climate control
Ventssee Airvents
Video mode.............................................. 336Activating ............................................ 334
Index527