lane assist MERCEDES-BENZ C CLASS 2019 Owner's Manual

Activating/deactivating Blind Spot AssistorActive Blind Spot AssistMultimedia system:
VehiclekAssistanceBlind Spot Assist
Activatesor deactivateSthe function.
Active LaneKeeping Assist
Function ofActive LaneKeeping Assist
Active LaneKeeping Assist monitorsthe area infront ofyourvehiclebymeans of multifunctioncamera1. It servestoprotectyou against unin‐tentionallyleavingyour lane.You will bewarned
byvibration pulses inthesteering wheel and gui‐dedbya course-correcting brake applicationbackintoyour lane.
You arewarnedbyvibration pulses inthesteer‐ing wheel inthefollowing circumstances:
RActive LaneKeeping Assist detects a lanemarking.
RA front wheel drivesoverthis lane marking.
You will also be guided back intoyour lanebymeans of a course-correcting brake applicationifthefollowing conditions are met:
RActive LaneKeeping Assist detects lanemarkings on bothedges ofthe lane.
RA front wheel drivesover a solid lane mark‐ing.
You can activate or deactivatetheActive LaneKeeping Assistwarning.
Active LaneKeeping Assist can neitherreducetherisk of an accident ifyoufailtoadaptyourdrivingstyle noroverridethe lawsof physics. Itcannottakeinto accountroad,weather or trafficconditions.Active LaneKeeping Assist is only anaid.You areresponsibleforthe distancetothe
vehicle in front,forvehicle speed,for braking ingood time andforstaying inyour lane.
Active LaneKeeping Assist can bringthevehicleback intothe lane with a lane-correcting brakeapplication. Inthe case of a broken lane markingbeing detected, a brake application will only bemade if avehicle has been detected inthe adja‐cent lane. Oncoming traffic can be detected.
Vehicles with Driving Assistance packageorDriving Assistance Plus package:overtakingvehicles andvehicles in adjacent lanes can alsobe detected.
Active LaneKeeping Assist isavailable inthespeedrange between37mph (60 km/h) and124mph (200 km/h).
222Driving and parking

If a lane-correcting brake application occurs, dis‐play1appears inthe multifunction display.
System limitations
No lane-correcting brake application occursinthefollowing situations:
RYou clearlyand activelysteer, brake or accel‐erate.
RYou haveswitched onthe turn signal indica‐tor (situation-dependent).
RA driving safety system intervenes, suchas
ESP®,Active Brake AssistorActive BlindSpot Assist.
RYou haveadopted a sporty drivingstyle withhigh cornering speeds or highrates of accel‐eration.
RWhen ESP®is deactivated.
RIf a loss of tire pressure or afaulty tire hasbeen detected and displayed.
The system may be impaired or may not functioninthefollowing situations:
RIfthere is poor visibility, e.g. duetoinsuffi‐cient illumination oftheroad, ifthere arehighlyvariable shade conditions or inrain,snow,fog or heavy spray.
RIfthere isglare, e.g. from oncoming traffic,the sun orreflections.
RIfthe windshield inthe area ofthe multifunc‐tion camera is dirty, or ifthe camera isfog‐ged up, damaged or covered.
RIfthere are no lane markings, or severalunclear lane markings are presentfor onelane, e.g. aroundroadworks.
RIfthe lane markings areworn, dark or cov‐ered.
RIfthe distancetothevehicle in front istooshort andthusthe lane markings cannotbedetected.
RIfthe lane markingschangequickly,e.g.lanes branch off, cross one another ormerge.
RIftheroadwayisverynarrowand winding.
Vehicles with Driving Assistance packageorDriving Assistance Plus package:Active LaneKeeping Assist usesradar sensorstomonitorseveral areas aroundthevehicle. Iftheradarsensors intherear bumper are dirty or coveredwith snow,the system may be impaired or maynot function. If an obstacle inthe lane in whichyou are driving has been detected, no lane-cor‐recting brake application occurs.
Driving and parking223

Activating/deactivatingActive LaneKeepingAssist (vehicles withParking AssistPARKTRONIC)
\nWARNINGRisk of accident despiteActive LaneKeeping Assistwarning
A lane-correcting brake application cannotalwaysbringthevehicle back intothe origi‐nal lane.
Alwayssteer, brake or accelerateyour‐self, especially ifActive LaneKeepingAssistwarnsyou or makes a lane-cor‐recting brake application.
\nWARNINGRisk of accident despiteinter‐vention ofActive LaneKeeping Assist
Active LaneKeeping Assist does not detecttraffic conditions orroad users. Inveryrarecases,the system may make an inappropri‐ate brake application, e.g. after intentionallydrivingover a solid lane marking.
The brake application can be interrupted atany time ifyousteer slightly inthe oppositedirection.
Always make surethatthere is suffi‐cient distancetothe sideforother traf‐fic or obstacles.
\nWARNINGRisk of accident despiteLaneKeeping Assist
LaneKeeping Assist cannotalways clearlydetect lane markings.
In suchcases, LaneKeeping Assist can:
Rgive an unnecessarywarning
Rnot give awarning
Always pay particular attentiontothetraffic situation andkeep withinthelane, especially ifActive LaneKeepingAssist alertsyou.
Be suretoobservethe system limitations ofActive LaneKeeping Assist.
Press button2.If indicator lamp1lights up,Active LaneKeeping Assist is activated,the lane mark‐ings are shown as light inthe assistancegraphic. WhenActive LaneKeeping Assist isactive,the lane markings are shown in greeninthe assistance graphic.
224Driving and parking

Settingthe sensitivity ofActive LaneKeep‐ing AssistMultimedia system:
VehiclekAssistanceAct. Lane Keep. Assist
Select a setting.
Activating/deactivating thewarning
SwitchLane Depart. Warningonsor offS.You do notreceiveanywarning when leavinga lane ifthe lanekeepingwarning system isdeactivated.
Vehicletowing instructions
Thevehicle is not suitableforthe use oftow barsystemsthat are usedforflattowing or dinghytowing,forexample.Attaching and usingtow barsystems can leadtodamage onthevehicle.Whenyou aretowing avehicle withtow bar sys‐tems, safe drivingcharacteristics cannot beguaranteedforthetowingvehicle orthetowedvehicle. Thevehicle-trailer combination mayswervefrom sidetoside. Comply withthe per‐
mittedtowing methods (page 381) andthe instructionsfortowing with bothaxles ontheground (page 382).
Driving and parking225

Display messagesPossible causes/consequences andPPSolutions
Active Lane Keeping AssistInoperative
Consult aqualified specialistworkshop.
Malfunction Drive at Max.50 mph
*AIRMATIC is functioning onlytoa limitedextent. Thevehicle's handlingcharacteristics may be affected.
NOTEThe tires ofthe front axle orthe frontfenderscould be damagedbylargesteering movements
Avoid largesteering movements while driving and listenfor scraping sounds.
Ifyou hear scraping sounds, pullover andstopthevehicle safely, paying attentiontoroad and traffic con‐ditions, and set a highervehicle level if possible.
Drive in a manner appropriateforthe current level, but do notexceed 50mph (80 km/h).
Visit aqualified specialistworkshop.DYNAMICBODYCONTROL is malfunctioning. Thevehicle's handlingcharacteristics may be affected.
Do not drive at speeds greaterthan 50mph (80 km/h).
Visit aqualified specialistworkshop.
Blind Spot Assist Not Avail-able When Towing a TrailerSee Operator's Manual
*Whenyou establishthe electrical connectiontothe trailer, Blind Spot Assist is unavailable.
Pressthe left-handTouch Control and acknowledgethe display message.

Display messagesPossible causes/consequences andPPSolutions
Active Lane Keeping AssistCamera View RestrictedSee Operator's Manual
Possible causes are:
Rdirt onthe windshield inthe camera'sfield of vision
Rheavyrain, snow orfog
Driving systems and driving safety systems may be malfunctioning ortemporarily unavailable.
Oncethe cause ofthe problem is no longer present, driving systems and driving safety systems will beavailableagain.
Ifthe display message does not disappear:
Pullover andstopthevehicle safely as soon as possible, paying attentiontoroad and traffic conditions.
Cleanthe windshield.
Engine
Display messagesPossible causes/consequences andPPSolutions
=
See Operator's Manual
*The battery is not beingcharged.
NOTEPossible engine damage ifyou continue driving
Do not continue driving under any circumstances.
Consult aqualified specialistworkshop.
Display messages andwarning/indicator lamps457

1,2, 3 ...
4MATIC.....................................................15 9Function ..............................................15 9
12V batterysee Battery (vehicle)
12V socketsee Socket (12 V)
360° Camera........................................... 206Function .............................................. 206Openingthe camera cover (rear viewcamera) ...............................................209Selecting a view .................................. 209Settingfavorites ..................................209
A
A/C functionActivating/deactivating (multimediasystem) ................................................13 9Switching on/off (control panel) .........13 9
ABS (Anti-lock Braking System).............171
Accelerationsee Kickdown
Accident and breakdown manage‐mentMercedes me connect .........................320
Acoustic lockingverification signalActivating/deactivating ......................... 65
Activating/deactivating automaticvolume adjustment
Burmester®surround sound system ... 350
Active Blind Spot Assist..........................219Brake application ................................. 220Function ...............................................219Switching on/off ................................. 222System limitations ...............................219
Active Brake AssistFunction/notes ....................................175Setting .................................................181
Active Distance Assist DISTRONIC........183Active EmergencyStop Assist .............193Active Lane Change Assist...................191Calling up a speed ...............................185Displays inthe Instrument Display ......19 3Function ..............................................183Increasing/decreasing speed ..............185Requirements ......................................185
Route-based speed adaptation ............188Steering wheel buttons ........................185Storing a speed ...................................185Switching off/deactivating ..................185Switching on/activating ......................185System limitations ...............................183
Active EmergencyStop Assist...............193
Active Lane Change Assist......................191Activating/deactivating .......................193Function ...............................................191
Active LaneKeeping Assist.................... 222Activating/deactivating .......................224Activating/deactivatingthewarning ...225Function .............................................. 222Settingthe sensitivity .......................... 225System limitations ...............................222
ActiveParking Assist.............................. 209CrossTraffic Alert ................................215DriveAwayAssist................................214Exiting a parking space ........................212Function .............................................. 209Maneuvering assistance ......................215Parking .................................................211System limitations ...............................209
Index493

Active Service System PLUSsee ASSYSTPLUS
Active Speed Limit Assist.......................187Display.................................................187Function ..............................................187
ActiveSteering Assist.............................189Activating/deactivating .......................191Active EmergencyStop Assist .............193Active Lane Change Assist...................191Displays inthe Instrument Display ......19 3Function ..............................................189System limitations ...............................189
Adaptive cruise controlseeActive Distance AssistDISTRONIC
Adaptive Highbeam AssistFunction ..............................................12 5Switching on/off .................................12 6
AdditionalvaluerangeSetting display content ........................ 229
Additives.................................................. 427Engine oil ............................................. 427Fuel ..................................................... 427
Additives (engine oil)seeAdditives
Additives (fuel)seeFuel
Address booksee Contacts
Adjusting the balance/fader
Burmester®surround sound system ... 350
Adjusting the headlamprange...............12 3
Adjusting the soundfocus
Burmester®surround sound system ... 350
Adjusting treble, mid-range and basssettings
Burmester®surround sound system ... 350
ADS PLUS damping systemsee AIRMATIC
After-sales service centersee ASSYST PLUS
Air bagReduced protection ...............................42
Air conditioning systemsee Climate control
Air distributionSetting .................................................138
Air freshener systemseePerfume atomizer
Air inletsee Air-water duct
Air pressureseeTirepressure
Air suspensionsee AIRMATIC
Airvents...................................................14 3Adjusting (front) ..................................14 3Adjusting (rear) ....................................14 3
Airventssee Airvents
Air-recirculation mode.............................141
Air-water duct.......................................... 358Keeping free ........................................358
Airbag.........................................................40Activation .............................................. 34Front airbag (driver, front passenger) ....40Installation locations .............................40Knee airbag ........................................... 40
494Index

Active Blind Spot Asst. NotAvailable
WhenTowing aTrailer See Opera‐
tor's Manual........................................448
Active Brake AssistFunctions Cur‐
rently Limited See Operator's Man‐
ual.......................................................447
Active Brake AssistFunctions Limi‐
ted See Operator's Manual.................445
Active Distance AssistCurrently
Unavailable See Operator's Manual.....456
Active Distance AssistInoperative......456
Active Distance AssistNowAvailable
.............................................................456
IActive Headlamps Inoperative.....476
Active LaneKeeping Assist Camera
ViewRestricted See Operator's Man‐
ual....................................................... 456
Active LaneKeeping Assist Currently
Unavailable See Operator's Manual.....451
Active LaneKeeping Assist Inopera‐
tive...................................................... 452
ActiveParking Assist and
PARKTRONIC InoperativeSee Opera‐
tor's Manual........................................ 450
ActiveSteering Assist Currently
Unavailable See Operator's Manual.....450
ActiveSteering Assist Inoperative.......449
Adaptive Highbeam Assist Camera
ViewRestricted See Operator's Man‐
ual.......................................................478
Adaptive Highbeam Assist Currently
Unavailable See Operator's Manual.....478
Adaptive Highbeam Assist Inopera‐
tive......................................................477
ApplyBraketoShift from 'P'............... 464

wWarningTireMalfunction............ 467
wWheel Sensor(s) Missing.............469
Display onthe windshieldsee Head-up Display
Distance controlseeActive Distance AssistDISTRONIC
DistancerecorderseeTrip distance
DISTRONICseeActive Distance AssistDISTRONIC
DoorChild safety lock(rear door) ...................61Locking (emergencykey) .......................72Opening (fromthe inside) ......................69Unlocking (emergencykey) ....................72Unlocking (fromthe inside) ...................69
Door control panel.....................................16
DOT,TireIdentificationNumber (TIN)... 404
DrawbarseeTow-bar system
Drinking and driving................................14 8
DriveAway Assist....................................214
Drive positionInserting ..............................................15 6
Drive program display.............................15 3
Drive programsseeDYNAMIC SELECT
Driver's seatsee Seat
Driving lightsseeAutomatic driving lights
Driving safety system.............................170ABS (Anti-lock Braking System) ...........171Active Brake Assist..............................175BAS (Brake AssistSystem) ...................172EBD (electronic brakeforce distribu‐tion) .....................................................175
ESP®Crosswind Assist........................175Overview ..............................................171Radar sensors ......................................171Responsibility ......................................17 0STEER CONTROL .................................175
Driving systemDYNAMICBODYCONTROL ..................19 6
Driving systemsee 360° CameraseeActive Blind Spot AssistseeActive Distance AssistDISTRONICseeActive EmergencyStop AssistseeActive Lane Change AssistseeActive LaneKeeping AssistseeActiveParking AssistseeActive Speed Limit AssistseeActiveSteering Assistsee AIRMATICseeATTENTION ASSISTsee Blind Spot Assistsee Cruise controlsee Driving safety systemsee HOLD functionseeParking AssistPARKTRONICseeRear view cameraseeTraffic Sign Assist
Driving tipsDrinking and driving ............................14 8General driving tips .............................148Notes on breaking-in a newvehicle .....147
Drowsiness detectionseeATTENTION ASSIST
Index505