ESP MERCEDES-BENZ C CLASS 2019 Repair Manual

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.
Driving and parking18 9

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.
19 0Driving and parking

RWhen activelychanging lane without switch‐ing onthe turn signal.
RWhenthe tire pressure istoo low.
\nWARNINGRisk of accident ifActiveSteering Assist unexpectedlystops func‐tioning
Ifthe system limitations ofActiveSteeringAssist arereachedthere is no guaranteethatthe system willremain active or willkeepthevehicle in lane.
Alwayskeepyour hands onthesteeringwheel and observethe traffic carefully.
Alwayssteerthevehicle paying atten‐tiontotraffic conditions.
\nWARNINGRisk of accident ifActiveSteering Assist unexpectedly intervenes
A malfunction inthe detection of lane mark‐ings and objects can occur.
This could cause unexpectedsteering inter‐vention.
Steer accordingtotraffic conditions.
ActivatingActiveSteering Assist
RequirementsRESP®must be activated, but not intervening.
RActive Distance AssistDISTRONIC is activa‐ted.
If indicator lamp1is off: press button2.
Function ofActive Lane Change Assist
Thefollowing function is country-dependentand onlyavailable in conjunction withtheDriving AssistancePackage.
Active Lane Change Assistsupportsthe driverwhenchanging lanesbyapplyingsteeringtorqueifthe driver operates a turn signal.
Assistance whenchanging lanes is provided if allthefollowing conditions are met:
RYou are driving on a freeway orroad withmultiple lanes inthe direction of travel.
RThe neighboring lane is separatedbya bro‐ken lane marking.
RNovehicle is detected inthe adjacent lane.
RThe driven speed is between 50mph(80 km/h) and110mph (180 km/h).
RActive Lane Change Assistis switched on inthe multimedia system.
RActiveSteering Assist is switched on andactive.
Driving and parking191

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
Driving and parking19 3

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
194Driving and parking

Function of HillStart Assist
HillStart Assist holdsthevehiclefor a shorttime when pullingawayon a hill underthefol‐lowing conditions:
RVehicles with automatic transmission:The transmission is in position[or^.
RThe electric parking brake isreleased.
This givesyou enough timetomoveyourfootfromthe brake pedaltothe accelerator pedaland depress it beforethevehicle beginstorollaway.
\nWARNINGRisk of accident and injuryduetothevehiclerollingaway
After a short time, HillStart Assist no longerholdsthevehicle and it canrollaway.
Therefore, swiftly moveyourfootfromthe brake pedaltothe acceleratorpedal. Never attempttoleavethevehi‐cle if it is being heldbyHillStart Assist.
HOLD function
HOLD functionThe HOLD function holdsthevehicle at astand‐still withoutrequiringyoutodepressthe brakepedal, e.g. whilewaiting in traffic.
The HOLD function is only an aid. Theresponsi‐bilityforthevehicle safelystandingstillremainswiththe driver.
System limitationsThe HOLD function is only intendedtoprovideassistance when driving and is not a sufficientmeans of safeguardingthevehicle againstrollingawaywhenstationary.
RThe incline must not be greaterthan 30%.
Activating/deactivating the HOLD function
\nWARNINGRisk of an accident duetotheHOLD function being activated whenyouleavethevehicle
Ifyou leavethevehicle while onlythe HOLDfunction is brakingthevehicle,thevehiclecanrollawayinthefollowing situations:
RIfthere is a malfunction inthe system orinthe power supply.
RIfthe HOLD function is deactivatedbydepressingthe accelerator pedal or brakepedal, e.g.byavehicle occupant.
Always deactivatethe HOLD functionand securethevehicle againstrollingawaybefore leavingthevehicle.
Driving and parking19 5

Parking AssistPARKTRONIC
Function ofParking AssistPARKTRONIC
Parking AssistPARKTRONIC is an electronicparking assistance system with ultrasound. Itmonitorsthe area aroundyourvehicle using sixsensors1inthe front bumper and six sensorsintherear bumper.Parking AssistPARKTRONICshowsyouthe distance betweenyourvehicleand a detected obstacle visually and audibly.
Parking AssistPARKTRONIC is onlyan aid. It isnot a substituteforyour attentiontothe sur‐roundings. Theresponsibilityfor safe maneuver‐ing and parkingremains withyou. Make surethatthere are no persons, animals or objects in
the maneuvering area while maneuvering andparking in/exiting parking spaces.
Inthestandard setting, an intermittentwarningtone sounds from a distance of approximately1.0ft(0.3 m)toan obstacle in front and approx‐imately 3.3ft(1.0 m)toan obstacle behind. Acontinuoustone sounds from a distance ofapproximately 0.7ft(0.2 m). UsingtheWarnearlysetting inthe multimedia system,thewarningtonesfor front and side impact protec‐tion can also be settosound at a greater dis‐tance of approximately 3.3ft(1.0 m)(page 203).
TheWarnearlysetting is always active intherear ofthevehicle.
IfParking AssistPARKTRONIC is deactivated,ActiveParking Assist is unavailable.
Parking AssistPARKTRONIC displayinthemultimedia system
Vehicles withActiveParking Assist without a360° Camera
200Driving and parking

Reversing camera
Function oftherear view camera
Ifyou haveactivatedthe function inthe multime‐dia system,the image fromrear view camera1is shown inthe multimedia system display whenreversegear is selected. Dynamic guide linesshowthe paththevehicle willtakewiththesteering wheel in its current position. This helps
youtoorientyourself andto avoid obstacleswhen backing up.
Therear view camera is onlyan aid. It is not asubstituteforyour attentiontothe surroundings.Theresponsibilityfor safe maneuvering andparkingremains withyou. Make surethatthereare no persons, animals or objectsetc., inthemaneuvering area while maneuvering and park‐ing.
You can select fromthefollowing views:
RNormal view
RWide-angle view
The area behindthevehicle is displayed as amirror image, as inthe insiderearview mirror.
Vehicles withoutActiveParking AssistThefollowing camera viewsareavailable inthemultimedia system:
Normal view
1Yellow guide line,vehicle width (driven sur‐face) depending onthe currentsteeringwheel angle (dynamic)
2Yellow lane markingthe coursethe tires willtakeatthe currentsteering wheel angle(dynamic)
3Yellow guide line at a distance of approx‐imately 3.3ft(1.0 m) fromtherear area
4Bumper
5Red guide line at a distance of approximately1.0 in (0.3 m) fromtherear area
204Driving and parking

Wide-angle view
System limitations
Therear view camera will not function or willonly partially function inthefollowing situations:
RThe trunk lid is open.
RThere is heavyrain, snow orfog.
RThe ambient light conditions are poor, e.g. atnight.
RThe camera lens is obstructed, dirty orfog‐ged up. Observethe notes on cleaningtherear view camera (page 364).
RCameras, orvehicle components in whichthe cameras are installed, are damaged. In
thisevent, havethe cameras,their positionsandtheir settingchecked at aqualified spe‐cialistworkshop.
Thefield of vision andother functions oftherearview camera may berestricted duetoadditionalaccessories ontherear ofthevehicle (e.g.license plate bracket or bicyclerack).
The display contrast may be impaired duetoincident sunlight orother light sources. Inthis case, pay particular attention.
Havethe displayrepaired orreplaced if,forexample, pixel errorsconsiderablyrestrict itsuse.
360° camera
Function ofthe 360° CameraThe 360° Camera is a systemthat consists offour cameras. The cameras coverthe immediatevehicle surroundings. The system assistsyou,e.g. when parking or atexits withreduced visibil‐ity.
The 360° Camera is only an aid. It is not a sub‐stituteforyour attentiontothe surroundings.
Theresponsibilityfor safe maneuvering andparkingremains withyou. Make surethatthereare no persons, animals or objectsetc., inthemaneuvering area while maneuvering and park‐ing.
The systemevaluates images fromthefollowingcameras:
RRear view camera
RFront camera
RTwo side cameras inthe outside mirrors
Views ofthe 360° CameraYou can select from different views:
206Driving and parking

WhenActiveParking Assist has detected parkingspaces,thefollowing symbol appears inthe mul‐tifunction display inthe instrument cluster:
The arrows show on which side oftheroadwayfree parking spaces are located. They arethenshown inthe multimedia system display.
The parking space and, if necessary,the parkingdirection can be selected as desired.ActiveParking Assist calculates a suitablevehicle pathand assistsyou in parking andexitingthe park‐ing space.
Vehicles with automatic transmission:ActiveParking Assist supports withchanginggear,accelerating, braking andsteeringthevehicle.
ActiveParking Assist is only an aid. It is not asubstituteforyour attentiontothe surroundings.Theresponsibilityfor safe maneuvering andparkingremains withyou. Make surethat nopersons, animals or objectsetc. are inthemaneuveringrange.
ActiveParking Assist is canceled if, amongotherthings, one ofthefollowing actions is carriedout:
RYou deactivateParking AssistPARKTRONIC.
RYou deactivateActiveParking Assist.
RYou beginsteering.
RYou applythe parking brake.
RVehicles with automatic transmission:You engagetransmission position].
RESP®intervenes.
RYou openthe doors orthe trunk lid whiledriving.
System limitationsObjects located aboveor belowthe detectionrange ofActiveParking Assist are not detectedwhenthe parking space is being measured.These are also nottaken into account whentheparking maneuver is calculated, e.g.overhangingloads,overhangs or loadingramps of trucksorthe boundaries of parking spaces. In some cir‐cumstances,ActiveParking Assist maythereforeguideyou intothe parking space prematurely.
\nWARNINGRisk of accident duetoobjects located aboveor belowthedetectionrange ofActiveParking Assist
Ifthere are objects aboveor belowthedetectionrange,thefollowing situations mayarise:
RActiveParking Assist maysteertoo early.
RVehicles with automatic transmis‐sion:Thevehicle may notstop in front ofthese objects.
This could cause a collision.
Inthese situations, do not useActiveParking Assist.
Snowfall or heavyrain may leadtoa parkingspace being measured inaccurately.Parkingspacesthat are partiallyoccupiedbytrailerdrawbars might not be identified as such or bemeasured incorrectly. Only useActiveParkingAssist on level, high-gripground.
210Driving and parking