2019 MERCEDES-BENZ S CLASS warning light

&WARNINGRisk of accident duetothebrake systemoverheating
Ifyou leaveyourfootonthe brake pedalwhen driving,the brake system mayover‐heat.
This increasesthe braking distance andthebrake system mayevenfail.
#Never usethe brake pedal as afootrest.
#Do not depressthe brake pedal andtheaccelerator pedal atthe same timewhile driving.
*NOTEWearing outthe brake liningsbycontinuously depressingthe brake pedal
#Do not depressthe brake pedal contin‐uously whilst driving.
#Tousethe braking effect ofthe engine,shifttoa lowergear in good time.
*NOTEDamagetothe drivetrain andengine when pullingaway
#Do notwarmupthe engine whilethevehicle isstationary.Pullawayimmedi‐ately.
#Avoid high engine speeds and driving atfullthrottle untilthe engine hasreachedits operatingtemperature.
*NOTEDamagetothe catalytic converterduetonon-combusted fuel
The engine is notrunning smoothly and ismisfiring.
Non-combusted fuel mayget intothe cata‐lytic converter.
#Only depressthe accelerator pedalslightly.
#Havethe causerectified immediately ataqualified specialistworkshop.
Limited braking effect on salt-treatedroads:
RDuetosalt build-up onthe brake discs andbrakepads,the braking distance can increaseconsiderably orresult in braking only on oneside
RMaintain a much greater safe distancetothevehicle in front
Toprevent salt build-up:
RBrake occasionally while paying attentiontothe traffic conditions
RCarefully depressthe brake pedal atthe endofthe journey and whenstartingthe nextjourney
Plug-inhybrid:observethe notes inthe Supple‐ment. Otherwise,you may notrecognize dan‐gers.
ECOstart/stop function
Operation of the ECOstart/stop functionPlug-inhybrid:observethe notes inthe Supple‐ment. Otherwise,you mayfailtorecognize dan‐gers.
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Overview of driving systems and drivingsafety systems
Inthis section,you willfind information aboutthefollowing driving systems and driving safetysystems:
R360° Camera (→page 228)
RABS (Anti-lockBrakingSystem)(→page192)
RActive Distance AssistDISTRONIC(→page203)
RAIRBODYCONTROL (→page215)
RActive Brake Assist (→page196)
RActive LaneKeeping Assist (→page246)
RATTENTION ASSIST (→page 237)
RBAS (BrakeAssistSystem) (→page192)
RHillStart Assist (→page214)
REBD (ElectronicBrakeforceDistribution)(→page196)
RESP®(ElectronicStabilityProgram)(→page193)
RActive Speed Limit Assist (→page 206)
RHOLD function (→page214)
RSTEER CONTROL (→page196)
RActiveSteering Assist (→page 208)
RMAGICBODYCONTROL (→page217)
RNightViewAssist (→page240)
RActiveParking Assist (→page 231)
RParking AssistPARKTRONIC (→page 222)
RRear view camera (→page 226)
RCruise control (→page 200)
RBlind Spot Assist andActive Blind Spot Assist(→page243)
RTraffic Sign Assist (→page 239)
Function of ABS (Anti-lock Braking System)
ABSregulatesthe brake pressure in critical driv‐ing situations:
RDuring braking, e.g. at full brake applicationor insufficient tire traction,the wheels areprevented from locking.
RVehiclesteerability while braking is ensured.
If ABS intervenes when braking,you willfeel apulsing inthe brake pedal. The pulsating brakepedal can be an indication of hazardousroadconditions and can serveas aremindertotakeextra care while driving.
System limitationsRABS is active from speeds of approx. 5mph(8 km/h).
RABS may be impaired or may not function if amalfunction has occurred andtheyel‐low%ABSwarning lamp lights up contin‐uously inthe instrument cluster aftertheengine isstarted.
Function ofBAS (Brake Assist System)
&WARNINGRisk of an accident causedbya malfunction inBAS (Brake AssistSys‐tem)
IfBAS is malfunctioning,the braking distancein an emergency braking situation isincreased.
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125mph (200 km/h) when drivingstraightahead or cornering slightly.
RThevehicle isstabilizedbymeans of individ‐ual brake application on one side.
Function of EBD (electronic brakeforce dis‐tribution)
EBD ischaracterizedbythefollowing:
RMonitoring andregulatingthe brake pressureontherear wheels.
RImproved drivingstability when braking,especially on bends.
Function ofSTEER CONTROL
STEER CONTROL helpsyoubytransmitting anoticeablesteeringforcetothesteering wheel inthe directionrequiredforvehiclestabilization.
Thissteeringrecommendation is given particu‐larlyinthefollowing situations:
RBothright wheels or bothleft wheels are onawet or slipperyroad surface whenyoubrake
RThevehiclestartstoskid
System limitations
STEER CONTROL may be impaired or may notfunction inthefollowing situations:
RESP®is deactivated
RESP®is malfunctioning
RThesteering is malfunctioning
If ESP®is malfunctioning,you will be assistedfurtherbythe electric powersteering.
Function ofActive Brake Assist
Active Brake Assistconsists of:
RDistancewarning function
RAutonomous braking function
RSituation-dependent braking assistance
RVehicles with Driving AssistancePack‐age:EvasiveSteering Assist
Active Brake Assistcan helpyoutominimizetherisk of a collision withvehicles or pedestrians ortoreducethe effects of sucha collision.
IfActive Brake Assisthas detected arisk of colli‐sion, awarningtone sounds andthe

Canceling a brake application ofActive BrakeAssist
You can cancel a brake application ofActiveBrake Assistat any timeby:
RDepressingthe accelerator pedal fully.
RReleasingthe brake pedal.
Active Brake Assistmay cancelthe brake appli‐cation when one ofthefollowing conditions isfulfilled:
RYou maneuverto avoidthe obstacle.
RThereis no longer arisk of collision.
RAn obstacle is no longer detected in front ofyourvehicle.
EvasiveSteering Assist (onlyvehicles withDriving AssistancePackage)
EvasiveSteering Assist hasthefollowingcharac‐teristics:
RCan detectstationary or crossing pedes‐trians.
RCan assistthe driver with additionalsteeringassistance if it detects a swerving maneuver.
RCan be activatedbyan abruptsteering move‐ment during a swerving maneuver.
RCan assist during swerving andstraighteningofthevehicle.
RCanreact from a speed of approximately12mph (20 km/h) uptoa speed of approx‐imately 43mph (70 km/h).
RYou can preventthe assistance at any timebyactivelysteering.
&WARNINGRisk of an accident despiteEvasiveSteering Assist
EvasiveSteering Assist cannotalways clearlyidentify objects and complex traffic situa‐tions.
In addition,thesteering support of EvasiveSteering Assist isgenerally not sufficienttoavoid a collision.
In such cases EvasiveSteering Assist can:
Rgive an unnecessarywarning or provideassistance
Rnot giveawarning or not provide assis‐tance
#Always pay careful attentiontothe traf‐fic situation; do notrely on EvasiveSteering Assist alone.
#Bereadytobrake andtakeevasiveaction if necessary.
#Preventthe assistancebyactivelysteer‐ing in non-critical driving situations.
#Drive at an appropriate speed if pedes‐trians are closetothe path ofyourvehi‐cle.
Also observethe system limitations of EvasiveSteering Assist.
System limitations
The system may be impaired or may not functioninthefollowing situations:
RIn snow,rain,fog, heavy spray, ifthere isglare, in direct sunlight or ingreatlyvaryingambient light.
RIfthe sensors are dirty,fogged up, damagedor covered.
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cruise control willresume speedregulation backtothestored speed.
Cruise control is operated usingthe correspond‐ingsteering wheel buttons.You canstore anyspeed above15mph (20 km/h) uptothe maxi‐mum speed.
Ifyoufailtoadaptyour drivingstyle, cruise con‐trol can neitherreducetherisk of an accidentnoroverridethe lawsof physics. It cannottakeinto accountroad,weather or traffic conditions.Cruise control is only an aid.You areresponsibleforthe distancetothevehicle in front,forvehi‐cle speed,for braking in good time andforstay‐ing inyour lane.
Displaysonthe multifunction displayThestatus of cruise control andthestoredspeed are shown inthe multifunction display.
1Cruise control is selected
2Speed is saved, cruise control is deactivated
3Speed is saved, cruise control is activated
%The segments betweenthestored speed andthe end ofthe segment display light up inthe speedometer.
System limitationsCruise control may be unabletomaintainthestored speed on uphill gradients. Thestoredspeed isresumed whenthe gradientevens out.
Change into a lowergear in good time on longandsteep downhill gradients.Takeparticularnoteofthis when driving a ladenvehicle. By
doing so,you will make use ofthe engine's brak‐ing effect. Thisrelievesthe load onthe brakesystem and preventsthe brakes fromoverheat‐ing andwearingtooquickly.
Do not use cruise control inthefollowing situa‐tions:
RIn traffic situations whichrequire frequentchanges of speed, e.g. in heavy traffic, onwindingroads.
ROn slipperyroads.Accelerating can causethe drive wheelstolose traction andthevehicle couldthen skid.
RIfyou are driving when visibility is poor.
Operating cruise control
&WARNINGRisk of accident duetostoredspeed
Ifyou call upthestored speed andthis islowerthanyour current speed,thevehicledecelerates.
#Takeinto accountthe traffic situationbefore calling upthestored speed.
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Active Distance Assist DISTRONIC
Function ofActive Distance AssistDISTRONIC
Active Distance AssistDISTRONIC maintainstheset speed on free-flowingroads. Ifvehicles infront are detected,the set distance is main‐tained, if necessary,untilthevehicle comesto ahalt. Thevehicle accelerates or brakes depend‐ing onthe distancetothevehicle in front andthe set speed. The speed (intherange between15mph (20 km/h) and130mph (210km/h))andthe distancetothevehicle in front are setand saved onthesteering wheel.
Otherfeatures ofActive Distance AssistDISTRONIC:
RAdjuststhe drivingstyle depending ontheselected drive program (fuel-saving, comfort‐able or dynamic) (→page175)
RReactstostationaryvehicles detected inurban speedranges (except bicycles andmotorcycles)
RInitiates accelerationtothestored speed ifthe turn signal indicator is switched ontochangetotheovertaking lane.
RTakes one-sidedovertakingrestrictions intoaccount on highways or on multi-laneroadswith separateroadways (country-dependent).
Vehicles withActiveParking Assist:ifthevehicle has been brakedtoastandstill on multi-lane, separateroadwaysbyActive 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 in greatlyvaryingambient 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.
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System limitationsTemporary speedrestrictions (e.g.for a certaintime or duetoweather conditions) cannot beproperlydetectedbythe system. The maximumpermissible speed applyingfor avehicle with atrailer is not detectedbythe system. Inthese sit‐uationsyou must adjustyour speedyourself.
&WARNINGRisk 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
%Theavailability ofthefollowing function iscountry-dependent.
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 (→page 208).
Routeevents ahead are:
RBends
RT-intersections, traffic circles andtollsta‐tions
RTurns andexits
%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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Ifthe systemreaches a system limitation orthedriver has notsteeredthevehiclefor a consider‐able period of time or hasremovedtheir handsfromthesteering wheel,the system will,depending onthe situation,first alertthe driverwith a visualwarning. Display1appears inthemultifunction display.Ifthe driverstill does notsteerthevehicle, or hasstill nottaken hold ofthesteering wheel, arepeatedwarningtonesounds in additiontothe visualwarning mes‐sagetoremindthe drivertotakecontrol ofthevehicle.
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.
Ifthe detection of lane markings andvehiclesahead is impaired,ActiveSteering Assistswitchestopassive mode. The system providesno support inthis case. Duringthe transitionfromthe activetopassivestatus,theèsym‐bol is shown as enlarged andflashesyellow.Oncethe system is passivetheèsymbol isgrayed out inthe multifunction display.
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, traffic circles and when turn‐ing.
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