2019 MERCEDES-BENZ C CLASS buttons

Climate control........................................13 8Overview of climate control systems ..........138Operatingthe climate control system .........13 9
Driving and parking.................................14 4Driving ........................................................14 4DYNAMIC SELECT switch ...........................15 3Automatic transmission ..............................154Function ofthe 4MATIC ..............................15 9Refueling ....................................................15 9Parking ........................................................161Driving and driving safety systems .............170Vehicletowing instructions .........................225
Instrument Display and on-boardcomputer..................................................226Instrument Displayoverview ...................... 226Overview ofthe buttons onthesteeringwheel ..........................................................227Operatingthe on-board computer .............. 228Settingthe design ...................................... 229Settingthe additionalvaluerange .............. 229Overview of displays onthe multifunc‐tion display .................................................230
Adjustingthe instrument lighting ................231Menus and submenus ................................. 231Head-up Display ......................................... 237
Voice Control System..............................239Notes on operating safety .......................... 239Operation ................................................... 239UsingtheVoice Control System effec‐tively ...........................................................241Essentialvoice commands ..........................241
Multimedia system..................................254Overview and operation .............................. 254System settings .......................................... 263Fit & Healthy...............................................274Navigation ...................................................276Telephone ...................................................302Online and Internet functions ..................... 324Media .........................................................329Radio .......................................................... 342Sound .........................................................349
Maintenance and care.............................351ASSYST PLUS service interval display .........351Engine compartment .................................. 352Cleaning and care ....................................... 359
Breakdown assistance............................368Emergency ..................................................368Flat tire .......................................................370Battery (vehicle) ..........................................376Towstarting ortowingaway....................... 381Electrical fuses ........................................... 386
Wheels and tires......................................390Notes on noise or unusual handlingchar‐acteristics ...................................................390Notes onregularlyinspecting wheels andtires ............................................................ 390Notes on snowchains .................................391Tirepressure .............................................. 392Loadingthevehicle .................................... 399Tirelabeling ................................................ 403Definition oftermsfor tires and loading ..... 409Changing a wheel ........................................411
Contents3

1QR codefor accessingtherescue card→28
2Safetyvests→368
3Buttonsforthe SOS emergency call systemand breakdown assistance
→319
4Tocheck andtop up operatingfluids→425
5Totow-start andtowaway→381
6Flat tire→370
7Starting assistance→379
8Hazardwarning lights→12 5
9Fuelfillerflap with instruction labelsfor tirepressure, fuel type and QR codefor accessingtherescue card
→15 9
ATotow-start andtowaway→381
BTIREFIT kit→371
CFirst-aid kit→369
DWarning triangle→369
Ataglance – Emergencies and breakdowns19

Pressthe lever in direction1(activate) or2(deactivate).
Make surethatthechild safety locksareworking properly.
Activating/deactivating thechild safety lockfor therear side windows
Toactivate/deactivate:press button2.
Therear side windowcan be opened orclosed inthefollowing cases:
Rwith indicator lamp1lit: viathe switchonthe driver's door
Rwith indicator lamp1off: viathe switchonthe correspondingrear door or driv‐er's door
Notes on pets inthevehicle
\nWARNINGRisk of accident and injuryduetoanimals left unsecured or unat‐tended inthevehicle
Ifyou leaveanimals inthevehicle unatten‐ded or unsecured,theycould possiblypressdown buttons or switches.
Thereby an animal may:
Ractivatevehicle equipment and becometrapped,forexample
Rswitchsystems on or off and endangerotherroad users
Unsecured animals may bethrown around inthevehicle intheevent of an accident orsuddensteering and braking maneuver andinjurevehicle occupants inthe process.
62Occupant safety

Ifthevehicle is not opened within approximately40 seconds after unlocking, it locksagain. Anti-theft protection is activated again.
Do notkeepthe SmartKeytogether with elec‐tronic devices or metal objects. This can affectthe SmartKey's functionality.
If batterycheck lamp2does not light upafter pressingthe6or7button,thebattery is discharged.
Replacingthe SmartKeybattery(page 66).
Activating/deactivating the acoustic lockingverification signal
Multimedia system:
VehicleîVehicle SettingsAcoustic Lock
Activatesor deactivateSthe function.
Activating/deactivating the panic alarm
Requirements:RThe ignition is switched off
The panic alarm function is onlyavailable incertain countries.
Toactivate:press button1for approx‐imatelyone second.A visual and audible alarm is triggered.Todeactivate:briefly press button1again.
or
Pressthestart/stop button onthe cockpit(the SmartKeyis insidethevehicle).
Changingthe unlocking settings
Possible unlocking functions ofthe SmartKey:
RCentral unlocking
RUnlockingthe driver's door and fuelfillerflap
Toswitch between settings:pressthe6and7buttons simultaneouslyforapproximately six seconds untilthe batterycheck lampflashes twice.
Ifthe unlocking functionforthe driver's doorand fuelfillerflap has been selected:
RPressingthe6button a second time cen‐trally unlocksthevehicle
RVehicles with KEYLESS-GO:Ifyoutouchthe inner surface ofthe door handle onthedriver's door, onlythe driver's door and fuelfillerflap are unlocked.
Deactivatingthe SmartKeyfunctions
Ifyou do not usethevehicle or a SmartKey foranextended period of time,you canreducetheenergy consumption oftherespective Smart‐Key .Todo so, deactivatethe SmartKeyfunc‐tions.
Opening and closing65

Side windows
Opening and closingthe side windows
\nWARNINGRisk of entrapment whenopening a side window
When opening a side window,parts ofthebody could be drawn in or become trappedbetweenthe side window and window frame.
When opening, make surethat nobodyistouchingthe side window.
If someone is trapped,releasethe but‐ton immediately or pull it in ordertoclosethe side window again.
\nWARNINGRisk of becoming trappedwhen closing a side window
When closing a side window,body partscould be trapped inthe closing area intheprocess.
When closing, make surethat no bodyparts are inthe closing area.
If someone is trapped,releasethe but‐ton immediately or pressthe button inordertoreopenthe side window.
\nWARNINGRisk of becoming trappedwhenchildren operatethe side windows
Children could become trapped iftheyoper‐atethe side windows, particularly when unat‐tended.
Activatethechild safety lockfortherear side windows.
When leavingthevehicle, alwaystakethe SmartKeywithyou and lockthevehicle.
Never leavechildren unattended inthevehicle.
Requirements:RThe power supply orthe ignition is switchedon.
1Closes
2Opens
The buttons onthe driver's doortakeprece‐dence.
Tostart automatic operation:pressthebbutton beyondthe point ofresistanceor pull andrelease it.
80Opening and closing

Children in particular could accidentallypressthe electrical seat adjustment buttonsand become trapped.
While movingthe seats, make surethathands orother body parts do notgetunderthe lever assembly ofthe seatadjustment system.
\nWARNINGRisk of injuryduetoheadrestraints which are not installed or areadjusted incorrectly
If headrestraints are not installed or areadjusted incorrectly,the headrestraints can‐not provide protection as intended.
There is an increasedrisk of injury inthehead and neck area, e.g. intheevent of anaccident or when braking.
Always drive withthe headrestraintsinstalled.
Before driving off, make sureforeveryvehicle occupantthatthe center oftheheadrestraint supportsthe back ofthehead at abouteye level.
Do not interchangethe headrestraints ofthefront andrear seats. Otherwise,you will not beabletoadjustthe height and angle ofthe headrestraints correctly.
Adjustthe headrestraintfore-and-aft position sothat it is as close as possibletothe back ofyourhead.
\nWARNINGRisk of injuryor death duetoincorrect seat position
The seat belt does not offerthe intendedlevel of protection ifyou havenot movedtheseat backresttoan almostvertical position.
When braking or intheevent of an accident,you could slide underneaththe seat belt andsustain abdominal or neck injuries,forexam‐ple.
Adjustthe seat properlybefore begin‐ningyour journey.
Always ensurethatthe seat backrest isin an almostvertical position andthatthe shoulder section ofyour seat belt isrouted acrossthe center ofyour shoul‐der.
NOTEDamagetothe seats when movingthe seats back
The seats may be damagedbyobjects whenmovingthe seats back.
When movingthe seats back,makesurethatthere are no objects inthefootwell, under or behindthe seats.
92Seats andstowing

Children in particular could accidentallypressthe electrical seat adjustment buttonsand become trapped.
While movingthe seats, make surethathands orother body parts do notgetunderthe lever assembly ofthe seatadjustment system.
\nWARNINGRisk of injuryduetoheadrestraints which are not installed or areadjusted incorrectly
If headrestraints are not installed or areadjusted incorrectly,the headrestraints can‐not provide protection as intended.
There is an increasedrisk of injury inthehead and neck area, e.g. intheevent of anaccident or when braking.
Always drive withthe headrestraintsinstalled.
Before driving off, make sureforeveryvehicle occupantthatthe center oftheheadrestraint supportsthe back ofthehead at abouteye level.
Do not interchangethe headrestraints ofthefront andrear seats. Otherwise,you will not beabletoadjustthe height and angle ofthe headrestraints correctly.
Adjustthe headrestraintfore-and-aft position sothat it is as close as possibletothe back ofyourhead.
\nWARNINGRisk of injuryor death duetoincorrect seat position
The seat belt does not offerthe intendedlevel of protection ifyou havenot movedtheseat backresttoan almostvertical position.
When braking or intheevent of an accident,you could slide underneaththe seat belt andsustain abdominal or neck injuries,forexam‐ple.
Adjustthe seat properlybefore begin‐ningyour journey.
Always ensurethatthe seat backrest isin an almostvertical position andthatthe shoulder section ofyour seat belt isrouted acrossthe center ofyour shoul‐der.
1Seat backrest inclination
2Seat height
3Seat cushion inclination
4Seatfore-and-aft position
94Seats andstowing

Using buttons1to4, adjustthe contourofthe backrest individuallytosuityour back.
Headrestraints
Adjusting the front seat headrestraintsmechanically
\nWARNINGRisk of injuryfrom adjustingthevehicle settings whilethevehicle is inmotion
You could lose control ofthevehicle inthefollowing situations:
Rifyou adjustthe driver's seat,the headrestraint,thesteering wheel orthe mirrorwhilethevehicle is in motion
Rifyoufastenyour seat belt whilethevehi‐cle is in motion
Beforestartingthe engine: adjustthedriver's seat,the headrestraint,thesteering wheel orthe mirror andfastenyour seat belt.
\nWARNINGRisk of injuryduetoheadrestraints which are not installed or areadjusted incorrectly
If headrestraints are not installed or areadjusted incorrectly,the headrestraints can‐not provide protection as intended.
There is an increasedrisk of injury inthehead and neck area, e.g. intheevent of anaccident or when braking.
Always drive withthe headrestraintsinstalled.
Before driving off, make sureforeveryvehicle occupantthatthe center oftheheadrestraint supportsthe back ofthehead at abouteye level.
Do not interchangethe headrestraints ofthefront andrear seats. Otherwise,you will not beabletoadjustthe height and angle ofthe headrestraints correctly.
Adjustthe headrestraintfore-and-aft position sothat it is as close as possibletothe back ofyourhead.
Toraise:pullthe headrestraint up.
Tolower:pressrelease knob1inthe direc‐tion ofthe arrowand pushthe headrestraintdown.Tomoveforwards:pullthe headrestraintforwards.
Tomovebackwards:press and holdreleaseknob2.
96Seats andstowing