warning light MERCEDES-BENZ E CLASS 2019 Service Manual

SinceTraffic Sign Assistalso usesthe datastored inthe navigation system, it can updatethe display inthefollowing situations withoutdetecting traffic signs:
RWhenthevehiclechangesroads, e.g. a free‐way entry orexitroad.
RWhen a village or city boundary which isstored inthe digital map is crossed.
The camera also detects traffic signs with arestriction indicatedbyan additional sign (e.g. inwet conditions).
Traffic Sign Assistis only an aid. The driver isresponsibleforkeeping a safe distancetothevehicle in front,forvehicle speed andfor brakingin good time.
Warning whenthe maximum permissiblespeed isexceededThe system canwarnyou ifyou unintentionallyexceedthe maximum permissible speed.Todothis,you can specify inthe multimedia systembyhow muchthe maximum permissible speedcan beexceeded before awarning is issued.Yo ucan specify whetherthewarning istobe just avisualwarning or an acoustic one aswell.
Display inthe Instrument Display
Instrument Display intheWidescreen Cockpit
1Permissible speed
2Permissible speed whenthere is arestriction
3Additional sign withrestriction
Traffic Sign Assistis notavailable in all coun‐tries. If it is unavailable, display1is shown inthe speedometer.
System limitations
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,direct sunlight orreflections.
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RIfthe windshield inthe area ofthe multifunc‐tion camera is dirty, or ifthe camera isfog‐ged up, damaged or covered.
RIfthe traffic signs are hardtodetect, e.g. duetodirt or snow,or becausetheyare coveredor duetoinsufficient lighting.
RIfthe information inthe navigation system'sdigital map is incorrect or out-of-date.
RIfthe signs are ambiguous, e.g. traffic signson construction sites or in adjacent lanes.
RIfyou turn sharply when traffic signs are out‐sidethe camera'sfield of vision.
SettingTraffic Sign AssistMultimedia system:
VehiclekAssistance Traffic Sign
Assist
Activating/deactivating automatic adoptionof speed limits
Requirements:
RActive Distance AssistDISTRONIC is activa‐ted.
SelectLimit Adoption.
Activatesor deactivateSthe function.The speed limits detectedbyTraffic SignAssistare automatically adoptedbyActiveDistance AssistDISTRONIC.
Displaying detected traffic signs in themedia display
SelectDisplay in COMAND.
Activatesor deactivateSthe function.
When DISTRONIC or cruise control are acti‐vated,the speed detected can be manuallyadopted asthe speed limit (→page179).
Adjusting the type ofwarning
SelectVisual & Audible,VisualorNone.
Adjusting thewarningthresholdThisvalue determinesthe speed at which awarning is issued whenexceeded.
SelectWarning Threshold.
Setthe desired speed.
Blind Spot Assist andActive Blind SpotAssist
Function of Blind Spot Assist andActiveBlind Spot AssistwithexitwarningBlind Spot Assist andActive Blind Spot Assistuse two lateral,rear-facingradar sensorstomonitorthe area upto130ft(40 m) behindyourvehicle and10ft(3 m) directly nexttoyourvehi‐cle.
If avehicle is detected at speeds above approx‐imately 8mph (12 km/h) andthisvehicle subse‐quentlyentersthe monitoringrange directly nextto yourvehicle,thewarning lamp inthe outsidemirror lights upred.
If avehicle is detected closetothe side ofyourvehicle,theredwarning lamp inthe outside mir‐rorflashes. Ifyou switchonthe turn signal indi‐cator inthe corresponding direction, awarningtone sounds once. Ifthe turn signal indicatorremains switched on, allother detectedvehiclesare indicated onlybytheflashing oftheredwarning lamp.
Ifyouovertake avehiclequickly,nowarning isgiven.
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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)
\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.
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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.
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 (→page375) andtheinstructionsfortowing with bothaxles ontheground (→page377).
218Driving and parking

Adjusting the instrument lighting
Turnbrightness control1up or down.The lighting ofthe Instrument Display and inthe control elements ofthevehicle interior isadjusted.
Menus and submenus
Functions onthe service menu ofthe on-board computer
On-board computer:
Service
Toselectthe function:swipe upwards ordownwards onthe left-handTouch Control.
Pressthe left-handTouch Control.
Functions ontheServicemenu:
RMessage memory (→page 427)
RTires:
-Restartthe tire pressure losswarningsystem (→page 392)
-Checkthe tire pressure withthe tire pres‐sure monitor (→page 390)
-Restartthe tire pressure monitor(→page 391)
RASSYST PLUS: calls upthe service due date(→page 347)
RVehicles with aWidescreen Cockpit:Cool-ant: coolanttemperature display
REngine Oil Level: engine oil level
Calling upthe Assistance Graphic
On-board computer:
Assistance
Vehicles withthe Instrument Display intheWidescreen Cockpit:whenyou havethe design settoProgressive,you can viewthe Assistance Graphic inthe left-hand areaofthe Instrument Display.
Thefollowing displaysareavailable onthe Assis‐tance Graphic menu:
RAssistance Graphic
RAttention level (→page 209)
Toswitch betweenthe displays:swipeupwards or downwards onthe left-handTouch Control.
224Instrument Display and on-board computer

Displaying traffic incidentsMultimedia system:
NavigationZOptionsMap 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 (→page288).
Movesthe map (→page 291).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:
NavigationZOptionsAnnounce-
ments
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.
Multimedia system289

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 347).
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 3 in (85 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
\nWARNINGRisk 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.
348Maintenance and care

Allowthe enginetocool down and onlytouch component parts described inthefollowing.
\nWARNINGRisk 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.
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.
350Maintenance 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
\nWARNINGRisk 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.
356Maintenance 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 202) .
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
\nWARNINGRisk 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.
\nWARNINGRisk 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.
Maintenance and care361