2019 MERCEDES-BENZ S CLASS Owners Manual

Display messagesPossible causes/consequences andPPSolutions

Display messagesPossible causes/consequences andPPSolutions
Detection of arestraint system malfunction:
RTheurestraint systemwarning lamp does not light up whenthe ignition is switched on.
RTheurestraint systemwarning lamp lights up continuously orrepeatedly during a journey.#Visit aqualified specialistworkshop immediately.
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Front Left MalfunctionService Required(Example)
*The correspondingrestraint system is malfunctioning (→page 32).
&WARNINGRisk of injuryorfatal injury duetoa malfunction intherestraint system
Iftherestraint system is malfunctioning,restraint system components may be triggered unintentionally ormight not be triggered at all intheevent of an accident. This may affectthe EmergencyTensioning Device orairbag,forexample.
#Havetherestraint systemchecked andrepaired immediately at aqualified specialistworkshop.
Detection of arestraint system malfunction:
RTheurestraint systemwarning lamp does not light up whenthe ignition is switched on.
RTheurestraint systemwarning lamp lights up continuously orrepeatedly during a journey.
#Visit aqualified specialistworkshop immediately.
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*The corresponding window curtain airbag is malfunctioning (→page 32).
488Display messages andwarning/indicator lamps

Display messagesPossible causes/consequences andPPSolutions
Left Side Curtain AirbagMalfunction ServiceRequired(Example)
&WARNINGRisk of injuryorfatal injury duetomalfunctions inthe window airbag
Ifthe window airbag is malfunctioning, it might be triggered unintentionally or might not be triggered at all intheevent of an accident with high deceleration.
#Havethe window airbagchecked andrepaired immediately at aqualified specialistworkshop.
#Visit aqualified specialistworkshop immediately.
Front Passenger AirbagEnabled See Operator'sManual
*The front passenger airbag and knee airbags are enabled duringthe journey:
Reven when achild, a small adult or an objectweighing lessthanthe systemweightthreshold is located onthefront passenger seat
Reven whenthe front passenger seat is not occupied
The system may detect objects orforcesthat are addingtotheweight appliedtothe seat.
&WARNINGRisk of injuryorfatal injury when using achildrestraint system whilethe front passenger air bagis enabled
Ifyou secure achild in achildrestraint system onthe front passenger seat andthe front passenger air bag isenabled,the front passenger air bag can deploy intheevent of an accident.
Thechild could bestruckbythe air bag.
#Ensure, bothbefore and duringthe journey,thatthestatus ofthe front passenger air bag is correct.
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Display messagesPossible causes/consequences andPPSolutions
NEVER use arearwardfacingchildrestraint on a seat protectedbyanACTIVE FRONT AIRBAG; DEATH or SERI‐OUS INJURYtotheCHILD can occur.
#Pullover andstopthevehicle safely as soon as possible, paying attentiontoroad and traffic conditions.
#Checkthestatus ofthe automatic front passenger airbag shutoff (→page 43).
#If necessary,consult aqualified specialistworkshop immediately.
Front Passenger Airbag Dis-abled See Operator's Man-ual
*The front passenger airbag andthe knee airbag are deactivated, although an adult or a person with an adultstatureis onthe front passenger seat. If additionalforces are appliedtothe seat,theweightthe system detects may betoo low.
&WARNINGRisk of injuryorfatal injury duetoa disabled front passenger airbag
Ifthe front passenger airbag is disabled,the front passenger airbag will not be deployed intheevent of an acci‐dent and cannotperformits intended protective function.
A person inthe front passenger seat couldthen,forexample, come into contact with thevehicle's interior,especially ifthe person is sittingtoo closetothe cockpit.
#Make sure, bothbefore and duringthe journey,thatthestatus ofthe front passenger airbag is correct.
#Pullover andstopthevehicle safely as soon as possible, paying attentiontoroad and traffic conditions.
#Checkthestatus ofthe automatic front passenger airbag shutoff (→page 43).
#If necessary,consult aqualified specialistworkshop immediately.
490Display messages andwarning/indicator lamps

Display messagesPossible causes/consequences andPPSolutions
Active Brake Assist Func-tions Limited See Opera-tor's Manual
*Vehicles with Driving AssistancePackage:Active Brake Assistwith cross-traffic function, EvasiveSteering
Assist or PRE‑SAFE®PLUS is malfunctioning.
Vehicles without Driving AssistancePackage:Active Brake Assistis malfunctioning.
#Visit aqualified specialistworkshop.
Active Brake Assist Func-tions Currently Limited SeeOperator's Manual
*Vehicles withthe Driving AssistancePackage:Active Brake Assistwith cross-traffic function, EvasiveSteering
Assist or PRE‑SAFE®PLUS aretemporarily unavailable or only partiallyavailable.
Vehicles withoutthe Driving Assistance package:Active Brake Assististemporarily unavailable.
The ambient conditions are outsidethe system limits .
#Drive on.As soon asthe ambient conditions are withinthe system limits,the system will becomeavailable again.
#Ifthe display message does not disappear,stopthevehicle while paying attentiontoroad and traffic conditionsandrestartthe engine.
PRE-SAFE Inoperative SeeOperator's Manual
*PRE‑SAFE®functions are malfunctioning.
#Visit aqualified specialistworkshop.
Mercedes me connectServices Limited See Oper-ator's Manual
*Service limited.
Atleast one ofthe main functions ofthe Mercedes me connect system is malfunctioning.
#Observethe notes onthe diagnostics connection (→page 23).
#Visit aqualified specialistworkshop.
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Display messagesPossible causes/consequences andPPSolutions
S
Inoperative
*At least one main function ofthe Mercedes me connect system or ofthe SOS emergency call system is malfunc‐tioning.
#Visit aqualified specialistworkshop.
Check Brake Pads SeeOperator's Manual
*The brake pads havereachedthewear limit.
&WARNINGRisk of accident duetorestricted braking power
Whenthe brake pads havereachedtheirwear limit,the braking power may berestricted.
#Drive on carefully.
#Havethe brake systemchecked immediately at aqualified specialistworkshop.
#Visit aqualified specialistworkshop.
Driving systems
Display messagesPossible causes/consequences andPPSolutions
Active Blind Spot Asst. NotAvailable When Towing aTrailer See Operator's Man-ual
*Whenyou establishthe electrical connectiontothe trailer,Active Blind Spot Assistis unavailable.
#Pressthe left-handTouch Control and acknowledgethe display message.
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Display messagesPossible causes/consequences andPPSolutions
Drive More Slowly*You are drivingtoofastforthe selectedvehicle level.
#In ordertoadjustthevehicle level,you must not drive at speeds greaterthan 50mph (80 km/h).
#In ordertoadjustthevehicle level during trailer operation,you must not drive at speeds greaterthan19mph(30 km/h).
Blind Spot Assist CurrentlyUnavailable See Operator'sManual
*Blind Spot Assist istemporarily unavailable.
The system limits havebeenreached (→page243).
#Drive on.Oncethe cause ofthe problem is no longer present,the system will beavailable again.
or
#Ifthe display message does not disappear,stopthevehicle while paying attentiontoroad and traffic conditionsandrestartthe engine.
#If necessary,cleantherear bumper. Ifthe bumper isextremelydirty,the sensors inthe bumper may be mal‐functioning.
Active Steering Assist Inop-erative
*ActiveSteering Assist is malfunctioning.Active Distance AssistDISTRONICremainsavailable.
#Visit aqualified specialistworkshop.
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Display messagesPossible causes/consequences andPPSolutions