2019 MERCEDES-BENZ S CLASS Owners Manual

Beforeevery trip, make surethattheLATCH-type(ISOFIX)childrestraint system is engaged cor‐rectly in bothmounting brackets inthevehicle.
*NOTEBe careful nottodamagethe seatbeltforthe center seat when installingthechildrestraint system
#Make surethatthe seat belt is not trap‐ped.
#Vehicles withrecliningrear seats:Movetherecliningrear seat backrest down slightlybeforetheLATCH-type (ISOFIX)childrestraint system is installed.
#Removethe upholstered lining1.
#Vehicles withoutrecliningrear seats:Foldupholstered lining1upwards.
#Turnthe support ontherear side of uphol‐stered lining1by90°.The upholstered lining1willremainfoldedupwards.
#AttachtheLATCH-type (ISOFIX)childrestraint systemtobothmounting brackets2inthevehicle.
#Vehicles withrecliningrear seats:Returntherecliningrear seat backresttoan uprightposition.Therecliningrear seat backrest mustrestagainstthechildrestraint system.
SecuringTopTether
&WARNINGRisk of injuryor death whenadjustingthe seat after installing achildrestraint system
Vehicles with electrically adjustablerearseats:
Ifyou adjustthe seat after installing achildrestraint system,thefollowing may occur:
Rthe seat belt may either sittoo loose ortoo tight
Rthechildrestraint system can becomeloose, incorrectly positioned or damaged
As aresult,thechildrestraint system maynot be abletoprovidethe intended level ofprotection.
#Never adjustthe seat after installingthechildrestraint system.
Ifthechildrestraint system is equippedwith aTopTether belt:
Therisk of injury can bereducedbyTo pTether. TheTopTether beltfacilitates an
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additional connection betweenthechildrestraint system attached withLATCH-type (ISOFIX) andthevehicle.
#If necessary,moveheadrestraint1upwards (→page107).
#Fold up cover2ofTopTether anchorage3.
#InstalltheLATCH-type (ISOFIX)childrestraintsystem withTopTether. Always comply withthechildrestraint system manufacturer'sinstallation instructions when doing so.
#GuideTopTether belt4under headrestraint1betweenthe two headrestraintbars.
#HookTopTether hook5ofTopTether belt4without twisting intoTopTether anchor‐age3.
#TensionTopTether belt4. Always complywiththechildrestraint system manufactur‐er's installation instructions when doing so.
#Fold down cover2ofTopTether anchorage3.
#If necessary,slide headrestraint1down‐wards (→page107). Make surethatyou donot interferewiththe correctrouting ofTo pTether belt4.
Securingthechildrestraint system withtheseat belt
Securingthechildrestraint system withtheseat belt ontherear seat
When installing a belt-securedchildrestraintsystem, observethefollowing:
sAlways comply withthe manufacturer'sinstallation and operating instructionsforthechildrestraint system used.
sWhen using a category 0/0+ baby carseat and a category Irearward-facingchildrestraint system on arear seat:adjustthe front seat sothatthe seat doesnottouchthechildrestraint system.
sWhen using a category Iforward-facingchildrestraint system:removethe head
56Occupant safety

restraint fromtherespective seat, if possi‐ble.
Afterremovingthechildrestraint system,replacethe headrestraints again immedi‐ately and adjustthem correctly.
sThe backrestoftheforward-facingchildrestraint system must, asfar as possible, beresting onthe seat backrest oftherearseat.
sFor certainchildrestraint systems inweightcategory II or III,there may berestrictions inthe maximum size setting, e.g. duetopossi‐ble contact with theroof.
sThechildrestraint system must not be putunderstrain betweentheroof andthe seatcushion and/or be installedfacingthewrong direction. Where possible, adjusttheseat cushion inclination accordingly.
sThechildrestraint system must not be putunderstrainbythe headrestraints.Adjustthe headrestraints accordingly.
sMake surethatthechild'sfeetdo nottouchthe front seat. If necessary,movethe frontseatforward slightly.
The seat belts onthefollowing seats are equip‐ped with a special seat beltretractor:
RFront passenger seat
RRear seats
Vehicles with seat belt buckleextenders:when securing achild in achildrestraint systemon arear seat, observethefollowing notes:
RMake surethatthe seat belt isfastened onthechildrestraint system accordingtothemanufacturer's installation instructionsforthechildrestraint system.
RForchildrestraint systems with a belt clamp:engagethe seat belttongue intothe seat beltbuckle beforeyou tightenthe seat belt usingthe belt clamp.
When enabled,the special seat beltretractorensuresthatthe seat belts ofthe frontpassenger seat andrear seats do not slackenoncethechildrestraint system is secured(→page 53).
#Installthechildrestraint system.The entire base ofthechildrestraint systemmust alwaysrestonthe sitting surface oftherear seat.
#Always make surethatthe shoulder beltstrap is correctlyrouted fromthe seat beltoutlet ofthevehicletothe shoulder beltguide onthechildrestraint system.The shoulder beltstrap must beroutedfor‐wards and downwards fromthe seat belt out‐let.
Notes onrearward-facing andforward-facingchildrestraint systems onthe frontpassenger seat
&WARNINGRisk of injuryor death fromusing arearward-facingchildrestraintsystem whenthe front passenger frontairbag is enabled
Ifyou secure achild in arearward-facingchildrestraint system onthe front passengerseat andthePASSENGER AIRBAG OFF indi‐cator lamp is off,the front passenger airbagcan deploy intheevent of an accident.
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Thechild could bestruckbythe airbag.
Always ensurethatthe front passenger air‐bag is deactivated. ThePASSENGER AIRBAGOFF indicator lamp must be lit.
NEVER use arearward-facingchildrestraintsystem on a seat protectedbyan ENABLEDFRONT AIRBAGin front of it, DEATH or SERI‐OUS INJURYtotheCHILD can occur.
Observethe specific instructionsfortherear‐ward-facing andforward-facingchildrestraintsystems (→page 58).
Warning notice onthe front passenger sun visor
Always observethestatus ofthe front passengerfront airbag onthePASSENGER AIRBAG OFFindicator lamp:
RWhen using arearward-facingchildrestraintsystem onthe front passenger seat,the frontpassenger front airbag must always be disa‐bled. This is onlythe case ifthePASSENGERAIRBAG OFF indicator lamp is lit continu‐ously (→page 43).
RIfthePASSENGER AIRBAG OFF indicatorlamp is off,the front passenger front airbagis enabled. The front passenger front airbagmay deploy during an accident.
Securingthechildrestraint system withtheseat belt onthe front passenger seat
When installing a belt-securedchildrestraintsystem onthe front passenger seat, alwaysobservethefollowing:
sObservethechildrestraint system manufac‐turer's installation and operating instruc‐tions.
sWhen using aforward-facingchildrestraintsystem in Group I:removethe headrestraint fromtherespective seat, if possi‐ble.
Whenyouremovethechildrestraint sys‐tem, installthe headrestraint again immedi‐ately and adjust allthe headrestraints cor‐rectly.
sThe backrest oftheforward-facingchildrestraint system must lie asflat as possible
againstthe backrest ofthe front passengerseat.
sFor certainchildrestraint systems inweightgroup II or III,there may berestrictions inthe maximum size setting, e.g. duetopossi‐ble contact with theroof.
sThechildrestraint system must not be putunderstrain betweentheroof andthe seatcushion and/or be installedfacingthewrong direction.Adjustthe seat backrestinclination accordingly.
sThechildrestraint system must not be putunderstrainbythe headrestraints.Adjustthe headrestraints accordingly.
sNever place objects under or behindthechildrestraint system, e.g. cushions.
The seat belt onthe front passenger side isequipped with a special seatbeltretractor.
When activated,the special seatbeltretractorensuresthatthe seat belt does not slacken oncethechildrestraint system is secured(→page 53).
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#Setthe front passenger seat asfar back aspossible and movethe seat intothe highestposition.
#Fullyretractthe seat cushion length adjust‐ment.
#Adjustthe seat cushion inclination sothatthe front edge ofthe seat cushion is inthehighest position andtherear edge oftheseat cushion is inthe lowestposition.
#Setthe seat backresttoan almostverticalposition.
#Installthechildrestraint system.The entire base ofthechildrestraint systemmust alwaysrestonthe seat cushion ofthefront passenger seat.
#Always make surethatthe shoulder beltstrap is correctlyrouted fromthe seat beltoutlet ofthevehicletothe shoulder beltguide onthechildrestraint system.The shoulder beltstrap must beroutedfor‐wards and downwards fromthe seat belt out‐let.
#If necessary,adjustthe seat belt outlet andthe front passenger seat accordingly.
Child safety locks
Activating/deactivating thechild safety lockfor therear doors
&WARNINGRisk of accident and injuryduetochildren and animals left unatten‐ded inthevehicle
Ifyou leavechildren and animals unattendedinthevehicle,theymay be abletosetthevehicle in motion,forexampleby:
RReleasingthe parking brake.
RShiftingthe automatic transmission outof park position].
RStartingthe engine.
In addition,theymay operatevehicle equip‐ment and become trapped.
#Never leavechildren and animals unat‐tended inthevehicle.
#When leavingthevehicle, alwaystakethe SmartKeywithyou and lockthevehicle.
&WARNINGRisk offatal injury duetoexposuretoextreme heat or cold inthevehicle
If people – particularlychildren – areexposedtoextremetemperaturesover anextended period of time,there is arisk ofserious orevenfatal injury.
#Never leaveanyone – particularlychil‐dren – unattended inthevehicle.
#Never leaveanimals inthevehicle unat‐tended.
&WARNINGRisk of accident and injuryduetochildren left unattended inthevehicle
Whenchildren are traveling inthevehicle,theycould:
Ropen doors,thereby endangeringotherpeople orroad users
Rgetout ofthevehicle and be hitbytraffic
Roperatevehicle equipment and becometrapped,forexample
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#Whenchildren are traveling inthevehi‐cle, always activatetheavailablechildsafety locks.
#Never leavechildren unattended inthevehicle.
#When leavingthevehicle, alwaystakethekey withyou and lockthevehicle.
Child safety locksfortherear doors andtherearside windowsareavailable.Thechild safety lock ontherear doors secureseach door separately.The doors can no longerbe opened fromthe inside.
#Pressthe lever in direction1(activate) or2(deactivate).
#Make surethatthechild safety locksareworking properly.
Activating/deactivating thechild safety lockfor therear side windows
#Toactivate/deactivate:press button2.
Opening/closingthe side window intherearpassenger compartment is possible:
Rwith indicator lamp1lit: viathe switchonthe driver's door
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Rwith indicator lamp1off: viathe switchonthe correspondingrear door or driv‐er's door
Whenthechild safety lock is activated,the con‐trols intherear passenger compartment are dis‐abledfor:
Rtherear side windows
Rthe adjustment ofthe front passenger seatfromtherear passenger compartment
Rtheroller sunblinds:
-oftherear side windows
-oftherear window
-intheroof
Notes on pets inthevehicle
&WARNINGRisk of accident and injuryduetoanimals left unsecured or unat‐tended inthevehicle
Ifyou leaveanimals inthevehicle unatten‐ded or unsecured,theycould possibly pressdown buttons or switches.
Therebyan animal may:
Ractivatevehicle equipment and becometrapped,forexample
Rswitchsystems on or off and endangerotherroad users
Unsecured animals may bethrown around inthevehicle intheevent of an accident orsuddensteering and braking maneuver andinjurevehicle occupants inthe process.
#Never leaveanimals inthevehicle unat‐tended.
#Always correctly secureanimals whiledriving,forexample using a suitableanimal carrier.
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SmartKey
Overview of SmartKeyfunctions
&WARNINGRisk of accident and injuryduetochildren left unattended inthevehicle
Ifchildren are left unattended inthevehicle,theycould:
Ropen doors,thereby endangeringotherpersons orroad users.
Rget out ofthevehicle and be hitbyoncoming traffic.
Roperate vehicle equipment and becometrapped,forexample.
In addition,children could also setthevehi‐cle in motion,forexample,by:
Rreleasingthe parking brake.
Rshiftingthe automatic transmission out ofpark position].
Rstartingthe engine
#Never leavechildren and animals unat‐tended inthevehicle.
#When leavingthevehicle, alwaystakethe SmartKeywithyou and lockthevehicle.
#Keepthe SmartKeyout ofthereach ofchildren.
*NOTEDamagetothekey causedbymagneticfields
#Keepthekeyawayfromstrong mag‐neticfields.
1Locks
2Batterycheck lamp
3Unlocks
4Opens/closesthe trunk lid
5Panic alarm
The SmartKey locksand unlocksthefollowingcomponents:
RDoors
RTrunk lid
RFuelfillerflap
62Opening and closing