2019 MERCEDES-BENZ C CLASS warning light

Symbols........................................................5
Ataglance....................................................6Cockpit ........................................................... 6Warning and indicator lamps ........................10Overhead control panel ................................14Door control panel and seat adjustment .......16Emergencies and breakdowns ......................18
Digital Operator's Manual.........................20Calling upthe Digital Operator's Manual ...... 20
General notes.............................................21Protectingthe environment ..........................21Genuine Mercedes-Benz parts ......................21Operator's Manual ........................................22Service andvehicle operation ......................23Operating safety ...........................................24Declaration of conformityfor wirelessvehicle components .....................................25Diagnostics connection ................................ 25Qualified specialistworkshop ....................... 26Correct use ofthevehicle ............................26
Problems withyourvehicle ...........................27Reporting safety defects ...............................27LimitedWarranty ..........................................27QR codeforrescue card ...............................28Datastorage .................................................28Copyright ......................................................31
Occupant safety.........................................33Restraint system ...........................................33Seat belts ..................................................... 36Airbags ......................................................... 40
PRE-SAFE®system .......................................47Safely transportingchildren inthevehi‐cle ................................................................48Notes on pets inthevehicle .........................62
Opening and closing..................................64SmartKey......................................................64Doors............................................................ 69Trunk ............................................................73Roller sun blinds ...........................................78Side windows............................................... 80Sliding sunroof ............................................. 83Anti-theft protection .....................................88
Seats andstowing.....................................90Notes onthe correct driver's seat posi‐tion ............................................................... 90Seats ............................................................91Steering wheel ............................................100Easy entry andexitfeature .........................101Operatingthe memory function ..................102Stowage areas ............................................104Cup holder ..................................................11 5Ashtrayand cigarettelighter .......................116Sockets .......................................................11 8Wirelesscharging ofthe mobile phoneand connection withtheexterior antenna ...11 9Installing/removingthefloor mats .............120
Light and visibility...................................12 2Exterior lighting ..........................................12 2Interior lighting ...........................................127Changing bulbs (onlyforvehicles withhalogen headlamps) ....................................12 8Windshield wiper and windshieldwashersystem ........................................................13 2Mirrors........................................................13 4Operatingthe sun visors .............................137
2Contents

1Steering wheel paddle shifters→15 6
2Combination switch→124
3DIRECT SELECT lever→154
4Multimedia system display→254
5Glovebox→105
6Start/stop button→14 5
7Climate control systems→13 9
8Control elementsforthe multimedia system→254
9Hazardwarning lights→12 5
APASSENGER AIRBAGindicator lamps→44
BStowage compartment→105
CControl panelforthe multimedia system→255
DControl knobforvolume and switchesthesound on/off
→254
ESwitchesthe multimedia system on/off→254
FRear window roller sunblind→79
GECOstart/stop function→15 2
HActiveParking Assist→211
ISetsthevehicle level→19 8
JDYNAMIC SELECT switch→15 3
KControl panelforthe multimedia system(steering wheel)
→227
LAdjuststhesteering wheel→101
MControl panelforthe on-board computer→227
Operates cruise control→182
OperatesActive Distance AssistDISTRONIC→185
NDiagnostics connection→25
OOpensthe hood→352
PElectric parking brake→16 8
QLight switch→12 2
RControl panelfor:
ActiveSteering Assist→191
Active LaneKeeping Assist→224
Ataglance – Cockpit7

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

Calling upthe Digital Operator's Manual
Multimedia system:
VehicleÕOperator's Manual
Select a menu item.
In addition,you can also call upthe Operator'sManual within a main function (e.g. viaMediaInfo).
The Digital Operator's Manual describesthefunction and operation ofthevehicle andthemultimedia system.
For safetyreasons,the Digital Operator's Man‐ual is deactivated while driving.
The Digital Operator's Manual containsthefol‐lowing menu items:
RSearch: allowsyoutosearchpreciselyforkeywords.
RQuick start: providesyou with importantinformation sothatyou canstart usingyourvehicle immediately.
RTips: provides tips on howtouseyourvehiclein certain situations.
RMessages: providesyou with further informa‐tion aboutthe messages inthe instrumentcluster.
RBookmarks: providesyou with a list of allthebookmarksyou havestoredyourself.
1Picture
2Menu
3Navigation window
Some sections ofthe Digital Operator's Manual,such aswarnings, can be made visiblebyhigh‐lighting and pressingthem.
The Operator's Manual can also befound inthe Mercedes-Benz Guides app in all com‐mon appstores.
20Digital Operator's Manual

Restraint system functionality
Whenthe ignition is switched on, a self-test isperformed, during whichtheurestraint sys‐temwarning lamp lights up. It goes out no laterthan afew seconds afterthevehicle isstarted.The components oftherestraint system arethenfunctional.
Malfunctioningrestraint system
A malfunction has occurred intherestraint sys‐tem if:
Rtheurestraint systemwarning lamp doesnot light up whenthe ignition is switched on
Rtheurestraint systemwarning lamplights up continuously orrepeatedly during ajourney
\nWARNINGRisk of injuryorfatal injuryduetoa malfunction intherestraint sys‐tem
Iftherestraint system is malfunctioning,restraint system components may be trig‐
gered unintentionally or might not be trig‐gered at all intheevent of an accident. Thismay affectthe EmergencyTensioning Deviceor airbag,forexample.
Havetherestraint systemchecked andrepaired immediately at aqualified spe‐cialistworkshop.
Function oftherestraint system in an acci‐dent
Howtherestraint systemworks is determinedbythe severity ofthe impact detected andthe typeof accident anticipated:
RFrontal impact
RRear impact
RSide impact
RRollover
The activationthresholdsforthe components oftherestraint system are determined based ontheevaluation ofthe sensorvalues measured atvarious points inthevehicle. This process is pre-emptive in nature. The triggering/deployment of
the components oftherestraint system musttakeplace in good time atthestart ofthe colli‐sion.
Factors whichcan only be seen and measuredafter a collision has occurred do not play a deci‐siverole inthe deployment of an airbag.Nordotheyprovide an indication of airbag deployment.
Thevehicle may be deformed significantly with‐out an airbag being deployed. This isthe case ifonly parts which arerelatively easily deformedare affected andtherateofvehicle decelerationis not high. Conversely, an airbag may bedeployedeventhoughthevehicle suffersonlyminor deformation. Ifveryrigidvehicle partssuch as longitudinal members are hit,forexam‐ple,this mayresult in sufficiently high levels ofvehicle deceleration.
34Occupant safety

Inthefollowing cases,the seat beltwarninglights up during a journey if:
RThevehicle speedexceeds15mph(25 km/h) andthe driver's or frontpassenger seat belt is notfastened.
RThe driver or front passenger unfastenstheirseat belt whilethevehicle is in motion.
Airbags
Overview of airbags
1Knee airbag
2Driver's airbag
3Front passenger front airbag
4Window curtain airbag
5Side airbag
The installation location of an airbag is identifiedbythe AIRBAGsymbol.
When activated, an airbag can provide additionalprotectionfortherespectivevehicle occupant.
Potential protection from each airbag:
AirbagPotential protectionfor…
Knee airbag Thigh, knee and lower leg
Driver's airbag,front passengerfront airbag
Head andribcage
Window curtainairbagHead
Side airbag Ribcage, also pelvisforfront seat occupants
The front passenger front airbag can only bedeployed in an accident ifthePASSENGER AIR
BAG OFF indicator lamp is off. Ifthe frontpassenger seat is occupied, make sure, bothbefore and duringthe journey,thatthestatus ofthe front passenger front airbag is correct(page44).
NOTEImportant pointstoremember ifthe front passenger seat is unoccupied
In an accident,the components oftherestraint system may deploy unnecessarilyonthe front passenger side if:
RThere are heavy objects onthe frontpassenger seat.
RThe seat belttongue is engaged intheseat belt buckle ofthe front passengerseat andthe front passenger seat isunoccupied.
Stowobjects in a suitable place.
Only one person should use each seatbelt at any one time.
40Occupant safety

RThe front passenger sits in such awaythattheirweight israised fromthe sitting sur‐face.
\nWARNINGRisk of injuryor death duetodeactivated front passenger airbag
IfthePASSENGER AIRBAG OFF indicatorlamp is lit,the front passenger airbag is disa‐bled. It will not be deployed intheevent ofan accident and cannotperformits intendedprotective function.
A person inthe front passenger seat couldthen,forexample, come into contact withthevehicle interior, especially ifthe person issittingtoo closetothe cockpit.
Ifthe front passenger seat is occupied,always ensurethat:
RThe classification ofthe person inthefront passenger seat is correct andthefront passenger airbag is enabled or disa‐bled in accordance withthe person inthefront passenger seat.
RThe front passenger seat has been movedasfar back as possible.
RThe person is seated correctly.
Ensure, bothbefore and duringthe jour‐ney,thatthestatus ofthe frontpassenger airbag is correct.
Ifthe front passenger seat is occupied,the clas‐sification ofthe person orchildrestraint systemonthe front passenger seattakes place afterthefront passenger front airbag shutoff self-test.ThePASSENGER AIRBAG indicator lamps dis‐playthestatus ofthe front passenger front air‐bag.
Always observethe notes onthe function ofthePASSENGER AIRBAG indicator lamps(page44).
Function ofthePASSENGER AIRBAG indica‐tor lamps
Self-testof automatic front passenger frontairbag shutoffWhenthe ignition is switched on, a self-test isperformed during whichthe twoPASSENGERAIRBAG ON and OFF indicator lamps light upsimultaneously.
44Occupant safety

Thestatus ofthe front passenger front airbag isdisplayed afterthe self-test:
RPASSENGER AIRBAG ON lights upfor60 seconds, subsequently bothindicatorlamps are off (PASSENGER AIRBAG ON andOFF):the front passenger front airbag is abletodeploy intheevent of an accident.
RPASSENGER AIRBAG OFF lights up continu‐ously:the front passenger front airbag is dis‐abled. It willthen not be deployed intheevent of an accident.
IfthePASSENGER AIRBAG ON indicator lamp isoff, onlythePASSENGER AIRBAG OFF indicatorlamp shows thestatus ofthe front passengerfront airbag. ThePASSENGER AIRBAG OFF indi‐cator lamp may be lit continuously or be off.
IfthePASSENGER AIRBAG OFF indicator lampandtheurestraint systemwarning lamplight up simultaneously,the front passenger seatmay not be used. Also inthis case, do not installachildrestraint system onthe front passengerseat. Haveautomatic front passenger front air‐bag shutoffchecked andrepaired immediately ataqualified specialistworkshop.
Status displayIfthe front passenger seat is occupied, ensure,bothbefore and duringthe journey,thatthesta‐tus ofthe front passenger front airbag is correctforthe current situation.
After installing arearward-facingchildrestraint system onthe front passengerseat:PASSENGER AIRBAG OFF must be lit con‐tinuously.
\nWARNINGRisk of injuryor death fromusing arearward-facingchildrestraintsystem whenthe front passenger frontairbag is enabled
Ifyou secure achild in arearward-facingchildrestraint system onthe front passengerseat andthePASSENGER AIRBAG OFF indi‐cator lamp is off,the front passenger airbagcan deploy intheevent of an accident.
Thechild could bestruckbythe airbag.
Always ensurethatthe front passenger air‐bag is deactivated. ThePASSENGER AIRBAGOFF indicator lamp must be lit.
NEVER use arearward-facingchildrestraintsystem on a seat protectedbyan ENABLEDFRONT AIRBAGin front of it, DEATH or SERI‐OUS INJURYtotheCHILD can occur.
When installing achildrestraint system onthefront passenger seat, observethevehicle-spe‐cific information (page 59).
Depending onthechildrestraint system andthestature ofthechild,thePASSENGER AIRBAGOFF indicator lamp may be off. Inthis case, donot installtherearward-facingchildrestraintsystem onthe front passenger seat.
Instead, installtherearward-facingchildrestraint system on a suitablerear seat.
After installing aforward-facingchildrestraint system onthe front passengerseat:depending onthechildrestraint systemandthestature ofthechild,PASSENGER AIRBAG OFF may be lit continuously or be off.Always observethefollowing information.
Occupant safety45