2019 MERCEDES-BENZ C CLASS Owners Manual

Toactivate cruise control:pressrockerswitch2up (SET+) or down (SET-).The current speed isstored and maintainedbythevehicle whenyoutakeyourfootoffthe accelerator pedal.
or
Pressrocker switch3up (RES).The laststored speed is called up and main‐tainedbythevehicle.
Ifthe laststored speed has previously beendeleted,the currently driven speed isstored.
Whenyou switchoffthevehicle,the lastspeedstored is cleared.
Toincrease/reduce speed:pressrockerswitch2up/downtothe pressure point.Thestored speed is increased orreducedby1mph (1km/h).
or
Pressrocker switch2beyondthe pressurepoint.Thestored speed is increased orreducedby5mph (10 km/h).
or
Acceleratethevehicletothe desired speed.
Pressrocker switch2up.If cruise control is activated andTraffic SignAssisthas detected a speedrestriction sign witha maximum permissible speed andthis is dis‐played inthe instrument cluster:
Toadoptthe detected speed:pressrockerswitch3up.The maximum permissible speed shownbythe traffic sign isstored andthevehiclemaintainsthis speed.Todeactivate cruise control:pressrocker switch3down (CNCL).
Todeactivate cruise control:pressrockerswitch1down.
Ifyou brake, deactivate ESP®or if ESP®
intervenes, cruise control is deactivated.Whenyou switchoffthevehicle,the lastspeedstored is cleared.
Active Distance Assist DISTRONIC
Function ofActive Distance AssistDISTRONIC
Active Distance AssistDISTRONIC maintainstheset speed on free-flowingroads. Ifvehicles infront are detected,the set distance is main‐tained, if necessary,untilthevehicle comesto ahalt. Thevehicle accelerates or brakes depend‐ing onthe distancetothevehicle in front andthe set speed. The speed and distancetothevehicle in front are set and saved onthesteeringwheel onvehicles withoutthe Driving AssistancePackage, intherange between15mph(20 km/h) and120mph (200 km/h) and, on
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vehicles withthe Driving AssistancePackage, intherange between15mph (20 km/h) and130mph (210km/h).
Otherfeatures ofActive Distance AssistDISTRONIC:
RAdjuststhe drivingstyle depending ontheselected drive program (fuel-saving, comfort‐able or dynamic) (page153)
RVehicles with Driving AssistancePack‐age:reactstostationaryvehicles detected inurban speedranges (except bicycles andmotorcycles).
RInitiates accelerationtothestored speed ifthe turn signal indicator is switched ontochangetotheovertaking lane.
RVehicles with Driving AssistancePack‐age:takes one-sidedovertakingrestrictionsinto account on highways or on multi-laneroads with separateroadways (country-dependent).
Vehicles withActiveParking Assist and Driv‐ing AssistancePackage:ifthevehicle hasbeen brakedtoastandstill on multi-lane,struc‐
turallyseparateroadwaysbyActive DistanceAssistDISTRONIC, it can automaticallyfollowthevehicle in front driving off again within30 seconds. If a critical situation is detectedwhen driving off, a visual and acousticwarning isgiven indicatingthatthe driver must nowtakecontrol ofthevehicle. Thevehicle is not acceler‐ated any further.
Active Distance AssistDISTRONIC is only an aid.The driver isresponsibleforkeeping a safe dis‐tancetothevehicle in front,forvehicle speedandfor braking in good time.
System limitations
The system may be impaired or may not functioninthefollowing instances:
RIn snow,rain,fog, heavy spray, ifthere isglare, in direct sunlight or ingreatlyvaryingambient light.
RThe windshield inthe area ofthe camera isdirty,fogged up, damaged or covered.
RIftheradar sensors are dirty or covered.
RIn parkinggarages or onroads withsteepuphill or downhill gradients.
RIfthere are narrowvehicles in front, such asbicycles or motorcycles.
In addition, on slipperyroads, braking or accel‐erating can cause one or several wheelstolosetraction andthevehicle couldthen skid.
Do not useActive Distance AssistDISTRONIC inthese situations.
\nWARNINGRisk of accident from acceler‐ation or brakingbyActive DistanceAssistDISTRONIC
Active Distance AssistDISTRONIC may accel‐erate or brake inthefollowing cases,forexample:
RIfthevehicle pullsawayusingActive Dis‐tance AssistDISTRONIC.
RIfthestored speed is called up and isconsiderablyfaster or slowerthanthecurrently driven speed.
RIfActive Distance AssistDISTRONIC nolonger detects avehicle in front or doesnotreacttorelevant objects.
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Always carefully observethe traffic con‐ditions and bereadytobrake at alltimes.
Takeinto accountthe traffic situationbefore calling upthestored speed.
\nWARNINGRisk of accident duetoinsuf‐ficient decelerationbyActive DistanceAssistDISTRONIC
Active Distance AssistDISTRONIC brakesyourvehicle with upto50% ofthe maximumpossible deceleration. Ifthis deceleration isnot sufficient,Active Distance AssistDISTRONIC alertsyou with a visual andacousticwarning.
Inthese cases, adjustyour speed andkeep a sufficient distance.
Brakethevehicleyourself and/ortakeevasive action.
\nWARNINGRisk of accident if detectionfunction ofActive Distance AssistDISTRONIC is impaired
Active Distance AssistDISTRONIC does notreact or has a limitedreaction:
Rwhen driving on a different lane or whenchanging lanes
Rtopedestrians, animals, bicycles orsta‐tionaryvehicles, or unexpected obstacles
Rtocomplextraffic conditions
Rtooncomingvehicles and crossing traffic
As aresult,Active Distance AssistDISTRONIC may neither givewarnings norintervene in suchsituations.
Always observethe traffic conditionscarefully andreact accordingly.
OperatingActive Distance Assist DISTRONIC
Requirements:RThevehicle has beenstarted.
RThe electric parking brake isreleased.
RESP®is activated and is not intervening.
RThe transmission is in position[.
RAllthe doors are closed.
RCheck oftheradar sensor system has beensuccessfully completed (vehicle travelingfasterthan12mph (20 km/h)).
RParking AssistPARKTRONIC is not beingusedtoparkthevehicle ortoexit from aparking space.
RThevehicle does not skid.
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Toactivate/deactivateActive DistanceAssist DISTRONIC:press button1.
ToactivateActive Distance AssistDISTRONIC:pressrocker switch3up (SET+) or down (SET-), or pressrocker switch4up.Removeyourfootfromthe acceleratorpedal.The current speed isstored and maintainedbythevehicle.
or
ToactivateActive Distance AssistDISTRONIC with astored speed:pressrocker switch4up.Removeyourfootfromthe accelerator pedal.
Ifrocker switch4is pressed up again afteractivation with astored speed,Active Dis‐tance AssistDISTRONIC is activated withthespeedrestriction displayed inthe instrumentcluster.
Toacceptthe displayed speedrestrictionwhenActive Distance Assist DISTRONICis active:pressrocker switch4up (RES).The speed limit displayed inthe instrumentcluster is adopted asthestored speed. Thevehicle adapts its speedtothat ofthevehiclein front, but only uptothestored speed.
TopullawaywithActive Distance AssistDISTRONIC:removeyourfootfromthebrake pedal and activateActive DistanceAssistDISTRONIC.
Pressrocker switch4up (RES).
or
Depressthe accelerator pedal briefly andfirmly.The functions ofActive Distance AssistDISTRONIC continuetobe carried out.
\nWARNINGRisk of accident duetoActiveDistance AssistDISTRONICstill beingactivated whenyou leavethe driver'sseat
Ifyou leavethe driver's seat whilethevehicleis being brakedbyActive Distance AssistDISTRONIC only,thevehicle canrollaway.
Always deactivateActive DistanceAssistDISTRONIC and securethevehi‐cletoprevent it fromrollingawaybeforeyou leavethe driver's seat.
TodeactivateActive Distance AssistDISTRONIC:pressrocker switch4down(CNCL).
Toincrease/reduce speed:pressrockerswitch3up/downtothe pressure point.Thestored speed is increased orreducedby1mph (1km/h).
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or
Press and holdrocker switch3up/downtothe pressure point.Thestored speed is increased orreduced inincrements of 1mph (1 km/h).
or
Pressrocker switch3beyondthe pressurepoint.Thestored speed is increased orreducedby5mph (10 km/h).
or
Press and holdrocker switch3beyondthepressure point.Thestored speed is increased orreduced inincrements of 5mph (10 km/h).Toincrease orreduce the specified dis‐tance fromthevehicle in front:pressrocker switch2up or down.
Function ofActive Speed Limit Assist
If achange inthe speed limit is detected andActive Distance AssistDISTRONIC is activated,Active Distance AssistDISTRONIC adaptsthisnew speed asthestored speed.
The driven speed is adjusted whenthevehicle islevel withthe traffic sign atthe latest. Inthecase of signs indicating entry into an urban area,the speed is adapted accordingtothe speed
permitted withinthe urban area. The speed limitdisplay inthe instrument display is always upda‐ted whenthevehicle is level withthe traffic sign.
Ifthere is no speedrestriction on an unlimitedstretch ofroad (e.g. on a freeway),therecom‐mended speed is adopted asthestored speed.The system usesthe speedstored on an unlimi‐tedstretch ofroad astherecommended speed.Ifyou do not alterthestored speed on an unlimi‐tedstretch ofroad,therecommended speed is80mph (130 km/h).
IfActive Distance AssistDISTRONIC has beenput into passivemodebypressingthe accelera‐tor pedal, only speed limits whichare higherthanthe set speed are adopted.
Active Speed Limit Assistis only an aid. Thedriver isresponsibleforkeeping a safe distancetothevehicle in front,forvehicle speed andforbraking in good time. The maximum permissiblespeed also depends onfactors suchastheroadsurface and traffic conditions.
System limitationsTemporary speedrestrictions (e.g.for a certaintime or duetoweather conditions) cannot be
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properlydetectedbythe system. The maximumpermissible speed applyingfor avehicle with atrailer is not detectedbythe system. Inthese sit‐uationsyou must adjustyour speedyourself.
\nWARNINGRisk of accident duetoActiveSpeed Limit Assistadaptingthevehicle'sspeed
The speed adoptedbyActive Speed LimitAssistmay betoo high or incorrect in someindividual cases, suchas:
RInthewet or infog
RWhentowing a trailer
Ensurethatthe driven speed complieswith trafficregulations.
Adjustthe driving speedtosuit currenttraffic andweather conditions.
Function ofroute-based speed adaptation
Thefollowing function is country-dependentand onlyavailable in conjunction withtheDriving AssistancePackage.
When Distance AssistDISTRONIC is active,thefunction adjuststhe speed depending ontherouteevents ahead. Depending onthe drive pro‐gram selected,thevehicle negotiatestherouteevent ahead in a fuel-saving, comfortable ordynamic manner. Whentherouteevent has beenpassed,thevehicle accelerates againtothestored speed. The set distancetothevehicle infront,vehicles detected ahead and speedrestric‐tions ahead aretaken into account.
Route-based speed adjustment canbyconfig‐ured inthe multimedia system(page189).
Routeevents ahead are:
RBends
RT-intersections, traffic circles andtollsta‐tions
RTurns andexits
RTraffic jams ahead (only withLiveTraffic(page 293))
Whenthetollstation isreached,Active Dis‐tance AssistDISTRONIC adoptsthe speed asthestored speed.
Also,the speed isreduced ifthe turn signaltochange lanes is switched on and one ofthefol‐lowing situations is detected:
RTurning off at intersections
RDriving on slowing-down lanes
RDriving on lanes adjacenttoslowing-downlanes
The driver isresponsibleforchoosingtherightspeed and observingotherroad users. Thisapplies in particulartointersections, traffic cir‐cles and traffic lights, asroute-based speedadaptation does not brakethevehicletoastand‐still.
Whenroute guidance is active,thefirst speedadjustment is carried out automatically. Iftheturn signal indicator is switched on,the selectedroute is confirmed and further speed adjustmentis activated.
Speed adjustment is canceled inthefollowingcases:
RIfthe turn signal indicator is switched offbeforetherouteevent.
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RIfthe driver depressesthe accelerator orbrake pedal duringthe process.
System limitationsRoute-based speed adaptation does nottakeright ofwayregulations into account. The driverisresponsiblefor complying withroad trafficregulations and driving at a suitable speed.
In difficult conditions (e.g. unclearroads, narrowlanes,wetroad surfaces, snow or ice) or whendriving witha trailer,the speed adjustment madebythe system may not always be suitable. Inthese situationsthe driver must interveneaccordingly.
\nWARNINGRisk of accident in spiteofroute-based speed adjustment
Route-based speed adjustment might mal‐function or betemporarily unavailable inthefollowing situations:
RIf map data is not uptodate oravailable
RIfyou do notfollowthe selectedrouteguidance
RIfthe setroute isre-planned
RInroad construction areas
RWhentowing a trailer
RIn badweather orroad conditions
RIfthe accelerator pedal is depressed
Adjustthe speedtothe traffic situation.
Settingroute-based speed adjustment
Requirements:RActive Distance AssistDISTRONIC is activa‐ted.
Multimedia system:
VehiclekAssistanceSpeed Adjustment
Activatesor deactivateSthe function.
ActiveSteering Assist
Function ofActiveSteering Assist
ActiveSteering Assist is country-dependentand onlyavailableforvehicles withthe Driv‐ing AssistancePackage.
ActiveSteering Assist is operational at speedsupto130mph (210km/h) and helpsyoutostayinthe center ofthe lanebymeans of moderatesteering interventions. It usesthevehicle in frontandthe lane markings as areference dependingonthe driven speed.
Whenthe system is activelysteering,theèsymbol is shown in green inthe multifunctiondisplay.
Ifthe detection of lane markings andvehiclesahead is impaired,ActiveSteering Assistswitchestopassive mode. The system providesno support inthis case. Duringthe transitionfrom activetopassivestatus,theèsymbol isshown as enlarged andflashesyellow.Oncethesystem is passive,theèsymbol is shown asgrayinthe multifunction display.
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Steering andtouch detectionThe driver isrequiredtokeeptheir hands onthesteering wheel at all times and be abletointer‐vene at any timetocorrectthe course ofthevehicle andkeep it in lane. The driver mustexpect achange from activetopassive mode orviceversa at any time.
Ifthe systemreaches a system limitation orthedriver has notsteeredthevehiclefor a consider‐able period of time or hasremovedtheir handsfromthesteering wheel,the system will,depending onthe situation, alertthe drivereither with a visualwarning or a visual andacousticwarning. Display1appears inthe mul‐tifunction display.
Ifthe driver does notsteerthevehicleover along period, or has nottaken hold ofthesteeringwheel, arepeatedwarningtone sounds in addi‐tiontothe visualwarning message (dependingonthe country).
Thewarning message does not appear or disap‐pears if one ofthefollowing conditions are met:
RThe driversteersthevehicle.
RThe driver presses asteering wheel button oroperatesTouch Control.
ActiveSteering Assist is only an aid. The driver isresponsibleforthe distancetothevehicle infront,forvehicle speed,for braking in good timeandforstaying in lane. Beforechanging lanes,the driver must make surethatthe neighboringlane is free (glanceoverthe shoulder).
System limitationsActiveSteering Assist has a limitedsteeringtor‐quefor lateral guidance. In some cases,thesteering intervention is not sufficienttokeepthevehicle inthe lane ortodrive pastexits.
The system may be impaired or may not functioninthefollowing instances:
RIn snow,rain,fog, heavy spray, ifthere isglare, direct sunlight,greatlyvarying ambientlight,reflections orstrong shadowsontheroadway.
RInsufficientroad illumination.
RThe windshield inthe area ofthe camera isdirty,fogged up, damaged or covered.
RAbsence of lane markings, or several unclearlane markings, or ifthe markingschangerap‐idly.
RThe distancetothevehicle in front istoosmall andthe lane markingsthus cannot bedetected.
RTheroad is narrow and winding.
RObstacles onthe lane or projecting out intothe lane.
The system does not provide assistance inthefollowing conditions:
ROn tight bends, intersections,tollstations,traffic circles and when turning.
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