light MERCEDES-BENZ C CLASS 2019 Repair Manual

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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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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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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If novehicle is detected inthe adjacent lane anda lanechange is permitted,the lanechangebegins. This is showntothe driver with a greenarrow2nexttothesteering wheel symbol.TheLane Change to the Leftmessage alsoappears,forexample. IfActive Lane ChangeAssisthas been activated withthe turn signalindicator but a lanechange is not immediatelypossible, a grayarrow1appears nexttothesteering wheel symbol, whichremains green.
Whenthe lanechange assistancestarts,the turnsignal indicator is automatically activated besidethe display inthe multifunction display.
Ifthe assistance graphic is shown whenchang‐ing lanes,the lanechange display appears with
an additional arrowpointingtowardsthe adja‐cent lane (page193).
If a lanechange is not possible,the arrow fadesout after afew seconds and a new lanechangemust be initiated. An immediate lanechange isonly possible on freeway sections without speedlimits.
Ifthe system is impaired,Active Lane ChangeAssistmay be canceled. If it is canceled,theLane Change Canceledmessage appears inthemultifunction display and awarningtone sounds.
\nWARNINGRisk of accident fromchang‐ing lanetoan occupied adjacent lane
Lane ChangeAssistcannot alwaysdetectclearly ifthe adjacent lane is free.
The lanechange might be initiated althoughthe adjacent lane is not free.
Beforechanging lanes, make surethatthe neighboring lane is free andthere isno dangerto otherroad users.
Monitorthe lanechange.
\nWARNINGRisk of accident if LaneChange Assistunexpectedlystops func‐tioning
Ifthe system limitationsfor Lane ChangeAssist havebeenreached,there is no guar‐anteethatthe system willremain active.
Lane Change Assist cannotthen assistyoubyapplyingsteeringtorques.
Always monitorthe lanechange andkeepyour hands onthesteering wheel.Observethe traffic conditions andsteerand/or brake if necessary.
System limitationsThe system limitations ofActiveSteering AssistapplytoActive Lane Change Assist(page189).
The system may also be impaired or may notfunction inthefollowing situations:
RThe sensors intherear bumper are dirty,damaged or covered,for instanceby asticker or ice and snow.
RTheexterior lighting is malfunctioning.
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Activating/deactivatingActive Lane ChangeAssistMultimedia system:
VehiclekAssistance
SelectLane Change Assist.
Activatesor deactivateSthe function.
Function ofActive EmergencyStop AssistIfthe driver continually ignoresthe visual oracousticwarningtoputtheir hands onthesteer‐ing wheel,theBeginning Emergency Stopmes‐sage appears inthe multifunction display.Ifthedriverstill does notrespond,Active DistanceAssistDISTRONICreducesthe speed. Thevehi‐cle is decelerated instagestoastandstill.Atspeeds below 40mph (60 km/h)the hazardwarning lights switch on automatically.
Whenthevehicle isstationary,thefollowingactions are carried out:
RThevehicle is secured withthe electric park‐ing brake
RActive Distance AssistDISTRONIC is ended
RThevehicle is unlocked
RIf possible, an emergency call is placedtothe Mercedes-Benz emergency call center
The driver can cancelthe deceleration at anytimebyperforming one ofthefollowing actions:
RSteering
RBraking or accelerating
RPressing asteering wheel button
ROperatingTouch Control
RActivating or deactivatingActive DistanceAssistDISTRONIC
OverviewofActive Distance AssistDISTRONIC displaysinthe instrument clus‐ter
The assistance graphic andthestatus displayshowthestatus ofthefollowing functions intheinstrument cluster:
RActive Distance AssistDISTRONIC
RRoute-based speed adaptation
RActiveSteering Assist
Assistant display
1Route-based speed adaptation (type ofrouteevent)
2Vehicle in front
3Distance indicator
4Set specified distance
5Active Lane Change Assistlanechange dis‐play
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Active Distance Assist DISTRONICstatus dis‐play androute-based speed adaptation
1Active Distance AssistDISTRONIC selected,set specified distance (number of segmentsbelowthevehicle)
2Active Distance AssistDISTRONIC deactiva‐ted, speedstored
3Active Distance AssistDISTRONIC active,speedstored, novehicle detected (brightvehicle symbol)
4Active Distance AssistDISTRONIC active,speedstored,vehicle detected (greenvehi‐cle symbol)
5Active Distance AssistDISTRONIC androute-based speed adaptation active, speedstored
On highways or high-speed majorroads,thegreençvehicle symbol is displayed cycli‐cally whenthevehicle isreadytopullaway.
SpeedometerThestored speed is highlighted onthe speedom‐eter. Ifthe speed ofthevehicle in front orthespeed adjustment is lessthanthestored speedduetotherouteevent ahead,the segments inthe speedometer light up.Activation or deactiva‐tion ofActive Distance AssistDISTRONIC, aswell as alterationstothe speed duetomanual orautomatic adoption ofthe speed limit, are dis‐played inthe controlfeedback ofthe multifunc‐tion display on a single line.
ActiveSteering Assiststatus display
1Graysteering wheel:ActiveSteering Assistswitched on and passive
2Greensteering wheel:ActiveSteering Assistswitched on and active
3Flashingsteering wheel: prompttothe drivertoactively confirmor transition from activetopassivestatus, system limitation detected
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Drive programCharacteristics
C(Sport)RThe suspension tuning isfirmer.
RThevehicle is settothe low level.
RThevehicle is not lowered any further ifyou are traveling at higher speeds.
B(Sport Plus)RThe suspension tuning isevenfirmer.
RThevehicle is settothe low level.
RThevehicle is not lowered any further ifyou are traveling at higher speeds.
Settingthevehicle level
\nWARNINGRisk of accident becausevehicle level istoo high
Ifyou drive at a highervehicle level,the driv‐ingcharacteristics may be impaired duetothe highervehicle center of gravity.
Thevehicle can drift outwards,forexample,whensteering or cornering.
Alwayschoose avehicle level which issuitedtothe drivingstyle andtheroadsurface conditions.
\nWARNINGRisk of entrapment fromvehi‐cle lowering
When loweringthevehicle, people couldbecome trapped iftheir limbs are betweenthevehicle body andthe tires or underneaththevehicle.
Make sure no one is underneaththevehicle or inthe immediate vicinity ofthe wheel arches whenyou lowerthevehicle.
\nWARNINGRisk of entrapment fromvehi‐cle lowering
Vehicles with AIRMATIC or level control:Whenyou unload luggage or leavethevehi‐cle,thevehiclefirstrises slightly andthenreturnstothe set level shortly afterwards.
You or anyone else inthe vicinity ofthewheel arches orthe underbody couldthusbecome trapped.
Thevehicle can also be lowered after beinglocked.
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When leavingthevehicle, make surethat nobody is inthe vicinity ofthewheel arches orthe underbody.
Requirements:RThevehicle has beenstarted.
RThevehicle must not be movingfasterthan37mph (60 km/h).
Raisingthevehicle
Press button1.Indicator lamp2lights up.
Thevehicle is settothe high level.
Your selection is saved.
Thevehicle is lowered again inthefollowing sit‐uations:
RWhen drivingfasterthan 50mph (80 km/h).
RWhen driving between37mph (60 km/h)and 50mph (80 km/h)for approximatelythree minutes.
RAfter selecting a drive program usingtheDYNAMIC SELECT switch.
Thevehicle is adjustedtothe height oftheactive drive program.
Loweringthevehicle
Press button1.Indicator lamp2goes out. Thevehicle isadjustedtothe height ofthe active drive pro‐gram.
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Vehicles withActiveParking Assist and a 360°Camera
IfActiveParking Assist is deactivated and anobstacle is detected inthe path ofthevehicle, apop-up windowforParking AssistPARKTRONIC1appears inthe multimedia system at speedsbelow 6mph (10 km/h).
System limitations
Parking AssistPARKTRONIC does not necessa‐rilytakeinto accountthefollowing obstacles:
RObstacles below the detectionrange, e.g.persons, animals or objects.
RObstacles abovethe detectionrange, e.g.overhanging loads,overhangs or loadingramps of trucks.
The sensors must be free of dirt, ice and slush.Otherwise,theymay not function correctly.Cleanthe sensorsregularly,taking care nottoscratch or damagethem.
Function ofthe passive side impact protec‐tionPassive side impact protection is an additionalParking AssistPARKTRONIC function whichwarnsthe driver about obstacles atthe side ofthevehicle. Awarning is issued when obstaclesare detected betweenthe front andrear detec‐tionrange. In orderfor an object onthe sidetobe detected,the sensors inthe front andrearbumper mustfirst detectthe object whileyouare driving past it.
Duringthe parking procedure or maneuvering,objects are detected asthevehicle drives past.Ifyousteer inthe direction of a detected obsta‐cle andthere is arisk of a lateral collision, awarning is issued. The segments onthe sides
light upyellow orred, depending onthe distancetothe obstacle.
Segment color depending on distance
ColorLateral distance incm
YellowApprox. 30 - 60
RedApprox. < 30
In orderfor lateral front orrear segmentstobedisplayed,thevehicle mustfirst travel a distanceof at least half ofthevehicle length. Oncethevehicle has traveledthe length ofthevehicle, allofthe lateral front andrear segments can be dis‐played.
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Wide-angle view
Vehicles withActiveParking AssistThefollowing camera viewsareavailable inthemultimedia system:
Normal view
1Yellow lane markingthe coursethe tires willtakeatthe currentsteering wheel angle(dynamic)
2Yellow guide line,vehicle width (driven sur‐face) depending onthe currentsteeringwheel angle (dynamic)
3Red guide line at a distance of approximately12in (0.3 m) fromtherear area
4Yellowwarning display ofParking AssistPARKTRONIC: obstacles are at a distance ofbetween approximately 2.0ft(0.6 m) and3.3ft(1.0 m)
5Redwarning display ofParking AssistPARKTRONIC: obstacles areveryclose(approximately1.0ft(0.3 m) or less)
6Orangewarning display ofParking AssistPARKTRONIC: obstacles are a medium dis‐tanceaway(between approximately1.0ft(0.3 m) and 2.0ft(0.6 m))
Ifthe entire systemfails,the inner segmentsofthewarning display are shown inred. Theindicator lamp onthePARKTRONIC buttonlights up andtheésymbol appears inthe multifunction display.Ifthe systemfails attherear,therear seg‐ments are shown inred when backing upand are hidden when drivingforwards.WhenActiveParking Assist is active,thelanes are displayed in green.IfParking AssistPARKTRONIC is deactivated,thewarning displayfades out.
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