warning light MERCEDES-BENZ S CLASS 2019 Service Manual

If a course-correcting brake application occurs,theredwarning lampflashes inthe outside mir‐ror and awarningtone sounds. In addition, a dis‐play1indicatingthe danger of a side collisionappears inthe multifunction display.
Inrarecases,the system may make an inappro‐priate brake application. This brake applicationmay be interrupted at any time ifyousteerslightly inthe opposite direction or accelerate.
System limitations
Either a course-correcting brake applicationappropriatetothe driving situation, or none atall, may occur inthefollowing situations:
RVehicles or obstacles, e.g. crash barriers, arelocated on bothsides ofyourvehicle.
RAvehicle approachestoo closely onthe side.
RYou haveadopted a sporty drivingstyle withhigh cornering speeds.
RYou brake or accelerate significantly.
RA driving safety system intervenes, e.g. ESP®
orActive Brake Assist.
RESP®is deactivated.
RA loss of tire pressure or afaulty tire isdetected.
Activating/deactivating Blind Spot AssistorActive Blind Spot AssistMultimedia system:
,Vehicle.kAssistance.Blind
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 bewarnedbyvibration pulses inthesteering wheel and gui‐
246Driving and parking

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.
RIftheroadwayisverynarrow and 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.
Activating/deactivatingActive LaneKeepingAssist (vehicles withParking AssistPARKTRONIC)
&WARNINGRisk 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.
&WARNINGRisk 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.
248Driving and parking

#Always make surethatthere is suffi‐cient distancetothe sideforother traf‐fic or obstacles.
&WARNINGRisk 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.
%Depending onthe country,you may havetopress and holdthe buttontodeactivate.
Settingthe sensitivity ofActive LaneKeep‐ing AssistMultimedia system:
,Vehicle.kAssistance.Act.
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‐
Driving and parking249

Head-up Display
Function ofthe Head-up Display
Mercedes‑AMGvehicles:observethe notes inthe Supplement. Otherwise,you may notrecog‐nize dangers.
The Head-up Display projects information fromthe navigation system,the driver assistance sys‐tems and somewarning messages abovethecockpit intothe driver'sfield of vision.
Display elements
1Navigation messages
2Current speed
3Detected instructions and traffic signs
4Set speed inthe driver assistance system(e.g. cruise control)
Whenyoureceivea call,theaIncoming Callmessage will appear onthe Head-up Display.
System limitations
The visibility is influencedbythefollowing condi‐tions:
RSeat position
RThe positioning ofthe display image
RLight conditions
RWetroads
RObjects onthe display cover
RPolarization in sunglasses
%Inextreme sunlight, sections ofthe displaymay appearwashed out.You can correctthisbyswitchingthe Head-up Display off and onagain.
Switchingthe Head-up Display on/off
#Press button1.
262Instrument Display and on-board computer

Displaying traffic incidentsMultimedia system:
,Navigation.ZOptions.Map
Content
#ActivatesTraffic Incidents.Roadworks,road blocks, local areareports(e.g.fog) andwarning messages are dis‐played.
Activating freeflow and traffic display
#ActivatesFree Flowing TrafficandTrafficDelays.
%The traffic delayis displayedforthe currentroute.Traffic delays lasting one minute orlonger aretaken into consideration.
Displaying details
#Displays the traffic map (→page319).
#Movesthe map (→page 322).#When a trafficreport symbol is underthecrosshair, press onthe central control ele‐ment.The trafficreport details are displayed.
or
#Press onthe central control element.
#SelectInformation on Traffic Reports.The map shows the trafficreport symbols inthe vicinity.
Trafficreport information is displayed inthestatus line:
RTrafficreport symbol
RReasonforthe trafficreport, e.g. trafficcongestion
RWarning message (highlighted inred)#Toselect a trafficreport symbol:selectNextorPrevious.
#Press onthe central control element.The trafficreport details are displayed.
Issuing hazardwarningsMultimedia system:
,Naviga-
tion.ZOptions.Announcements
#ActivatesAnnounce Traffic Warnings.Warning messages are issued andtailbackswhich pose arisk are announced.
Map and compass
Map and compassoverview
1Savesthe currentvehicle position
2Movesthe map
3Selectsthe map orientation and map view
4Selectsthe function depending onthe equip‐ment:
• Sends a hazardwarning via Car-to-X.
320Multimedia system

ForDTSPatents, see http://patents.dts.com.Manufactured under license fromDTS LicensingLimited.DTS,DTS-HD,the Symbol, &DTS andthe Symboltogether areregistered trademarks
ofDTS, Inc.©DTS, Inc. Allrightsreserved.
"Madefor iPod", and "Madefor iPhone," meanthat an electronic accessoryhas been designedtoconnect specificallytoiPod, or iPhone,respectively,and has been certifiedbythe devel‐opertomeet Apple performancestandards.Apple is notresponsibleforthe operation ofthisdevice or its compliance with safety andregula‐torystandards. Please notethatthe use ofthisaccessory with iPod, or iPhone may affect wire‐less performance.
For the USA:iPhone®, iPod®, iPod classic®,
iPod nano®, and iPodtouch®are trademarksofApple Inc.,registered intheU.S. andother coun‐tries. Lightning™ is a trademark of Apple Inc.
For Canada:iPhone, iPod, iPod classic, iPodnano, and iPodtouch are trademarksof AppleInc.,registered intheU.S. andother countries.Lightning is a trademark of Apple Inc.
Cinavia notice:this product uses Cinaviatech‐nologytolimitthe use of unauthorized copies ofsome commercially-producedfilm and videosandtheir soundtracks. When a prohibited use ofan unauthorized copy is detected, a message willbe displayed and playback or copying will be
interrupted. More information about Cinaviatechnology is provided at Cinavia Online Con‐sumer Information Center at http://www.cinavia.com.Torequest additional informa‐tion about Cinaviabymail, send a postcard withyour mailing addressto: Cinavia Consumer Infor‐mation Center, Box 86851,San Diego,CA,92138, USA.
This product incorporates proprietarytechnologyunder license fromVerance Corporation and isprotectedbyU.S.Patent7,369,677andotherU.S. andworldwide patents issued and pendingaswell as copyright and trade secretprotectionfor certain aspects of suchtechnology. Cinavia isa trademarkofVerance Corporation. Copyright2004-2012Verance Corporation. AllrightsreservedbyVerance.Reverse Engineering or dis‐assembly is prohibited.
Inserting a disc
&WARNINGRisk of injuryfrom laserradi‐ation fromthe Blu-ray drive
The Blu-ray drive is a class 1 laser product. Ifyou openthe housing ofthe Blu-ray drive,
390Multimedia system

Rfrequent operation in mountainousterrain oron poorroad surfaces
Rwhenthe engine is often leftidlingfor longperiods
Roperation in particularly dusty conditionsand/or if air-recirculation mode is frequentlyused
Inthese or similar operating conditions, havetheinterior airfilter, engine air cleaner, engine oiland oilfilteretc.changed more frequently. Thetires must bechecked more frequently ifthevehicle is operated under increased loads.Fur‐ther information can be obtained at aqualifiedspecialistworkshop.
Battery disconnection periods
The ASSYST PLUS service interval displaycan only calculatethe service due datewhenthe batteryis connected.
#Notedownthe service due date displayed onthe instrument display before disconnectingthe battery (→page 395).
Engine compartment
Active hood (pedestrian protection)
Operation ofthe active hood (pedestrian pro‐tection)In certain accident situations,therisk of injurytopedestrians can bereducedbythe actuationofthe active hood. Therear area ofthe hood israisedbyapproximately 80 mm.
Forthe drivetotheworkshop,resetthe trig‐gered active hoodyourself. Afterthe active hoodhas been triggered, pedestrian protection maybe limited.
Aqualified specialistworkshop mustre-instatethe full functionality ofthe active hood.
The active hood is notavailable in all countries.
Resettingthe active hood
&WARNINGRisk of burns from hot com‐ponent parts inthe engine compartment
Certain components inthe engine compart‐ment can beveryhot, e.g.the engine,theradiator and parts oftheexhaust system.
#Allowthe enginetocool down and onlytouch component parts described inthefollowing.
#Withyour handflat, push down active hood1inthe area aroundthe hinges on bothsides (arrows).The hood must engage in position.
#Ifthe active hood can beraised slightly attherear inthe area ofthe hinges,repeatthestep until it engages correctly.
396Maintenance and care

#Allowthe enginetocool down and onlytouch component parts described inthefollowing.
&WARNINGRisk of injuryfrom usingthewindshield wipers whilethe engine hoodis open
Whenthe engine hood is open andthe wind‐shield wipers are set in motion,you can betrappedbythe wiper linkage.
#Always switch offthe windshield wipersand ignition before openingthe enginehood.
Plug-inhybrid:observethe notes inthe Supple‐ment. Otherwise,you mayfailtorecognize dan‐gers.
#Toopen:pull lever1toreleasethe hood.#Push handle1ofthe hood catch upwardsand liftthe hoodbyapproximately15in(40 cm).#Toclose:lowerthe hood and let itfall from aheight of approximately 8 in (20 cm).
#Ifthe hood canstill be lifted slightly,openthe hood again and close it with a little moreforce until it engages correctly.
398Maintenance and care

%Ifyouwould liketoleavethevehicle while itis beingwashed, make surethe SmartKeyislocated inthevehicle. The]gear isother‐wise automatically engaged.
%If, afterthe carwash,youremovethewaxfromthe windshield and wiperrubbers,thiswill prevent smearing andreduce wipernoise.
Information on using a powerwasher
&WARNINGRisk of accident when usinghigh-pressure cleaning equipment withround-spraynozzles
Thewater jet from around-spraynozzle (dirtgrinder) may cause damagetotires and sus‐pension componentsthat is not visible.
Components damaged inthisway mayfailunexpectedly.
#Do not use high-pressure cleaningequipment withround-spraynozzlestocleanyourvehicle.
#Damaged tires or suspension compo‐nents must bereplaced immediately.
Toavoid damageto yourvehicle, observethefol‐lowing when using a powerwasher:
Rkeepthe SmartKeyat least10ft(3 m)awayfromthevehicle. Otherwisethe trunk lidcould open unintentionally.
Rmaintain a distance of at least11.8 in(30 cm)tothevehicle.
Rvehicles with decorativefoil:parts ofyourvehicle are covered with a decorativefoil.Maintain a distance of at least27.6 in(70 cm) betweenthefoil-covered parts ofthevehicle andthe nozzle ofthe powerwasher.Movethe powerwasher nozzle around whilstcleaning. Thewatertemperature ofthepowerwasher must notexceed140 °F(60 °C).
Robservethe information onthe correct dis‐tance inthe equipment manufacturer's oper‐ating instructions.
Rdo not pointthe nozzle ofthe powerwasherdirectly at sensitive parts such as tires, slits,electrical components, batteries, light bulbsandventilation slots.
Washingthevehiclebyhand
Observethe legalrequirements, e.g. in a numberof countries,washingbyhand is only permittedin specially designatedwash bays.
#Use a mild cleaning agent, e.g. car shampoo.
#Washthevehicle with lukewarmwater usinga soft car sponge. When doing so, do notexposethevehicletodirect sunlight.
#Carefully hosethevehicle off withwater anddry using achamois.Takecare nottopointthewater jet directlytowardsthe air inletgrille.
404Maintenance and care

Notes on cleaning and careAvoidingvehicle damage
Exterior lightingCleanthe lenses with awet sponge and mild cleaning agent,e.g. car shampoo.Only use cleaning agents or cleaning clothsthat are suitablefor plastic lenses.
SensorsCleanthe sensors inthe front andrear bumper and intheradiator grill with a soft clothand car shampoo.When using a powerwasher, maintain a minimum distance of11.8 in (30 cm).
Rear view cameraand360° CameraROpenthe camera cover withthe multimedia system(→page 231).
RUse cleanwater and a soft clothtocleanthe camera lens.
Do not use a powerwasher.
TailpipesClean with cleaning agentsrecommendedbyMercedes-Benz,particularlyinthe winter and afterwashingthevehicle.Do not use acidic cleaning agents.
Notes on care ofthe interior
&WARNINGRisk of injuryfrom plasticparts breaking off afterthe use of sol‐vent-based care products
Careand cleaning products containing sol‐vents can cause surfaces inthe cockpittobecome porous.
Whenthe airbags are deployed, plastic partsmay breakaway.
#Do not use any care or cleaning prod‐ucts containing solventstocleanthecockpit.
&WARNINGRisk of injuryor death frombleached seat belts
Bleaching or dyeing seat belts can severelyweakenthem.
This can,forexample, cause seat beltstotear orfail in an accident.
#Never bleachor dye seat belts.
41 0Maintenance and care