2019 MERCEDES-BENZ S CLASS immobilizer

Anti-theft protection
Function ofthe immobilizer
The immobilizer preventsyourvehicle from beingstarted withoutthe correct SmartKey.
The immobilizer is automatically activated whenthe ignition is switched off and deactivated whenthe ignition is switched on.
When leavingthevehicle, alwaystakethe Smart‐Key withyou and lockthevehicle. Anyone canstartthe engine if avalid SmartKeyhas been leftinsidethevehicle.
%Intheeventthe engine cannotbestarted(yetthevehicle’sstarter battery ischarged),the system is not operational. Contact anauthorized Mercedes-Benz Center or call1-800-FOR-MERCedes (inthe USA) or1-800-387-0100(in Canada).
ATA(anti-theft alarmsystem)
Function oftheATAsystem (anti-theft alarmsystem)
IftheATAsystem is armed, a visual and audiblealarm is triggered inthefollowing situations:
RWhen a door is opened
RWhenthe trunk lid is opened
RWhenthe hood is opened
TheATA system is armed automatically afterapproximately10seconds:
RAfter lockingthevehicle withthe SmartKey
RAfter lockingthevehicle using KEYLESS-GO.
WhentheATAsystem is armed, indicator lamp1flashes.
TheATA system is automatically deactivated:
RAfter unlockingthevehicle withthe Smart‐Key
RAfter pressingthestart/stop button withtheSmartKeyinsidethevehicle
90Opening and closing

Air suspensionsee AIRMATIC
Airvents...................................................16 5Adjusting (front) ..................................16 5Adjusting (rear) ....................................16 5Glovebox .............................................166
Airventssee Airvents
Air-recirculation mode............................16 2
Air-water duct.......................................... 403Keeping free ........................................403
Airbag.........................................................38Activation .............................................. 32Belt airbag .............................................36Cushionbag ...........................................38Front airbag (driver, front passenger) ....38Installation locations .............................38Knee airbag ........................................... 38Overview ............................................... 38PASSENGER AIRBAG indicator lamp .....43Protection ..............................................39Side airbag ............................................ 38Window curtain airbag ...........................38
AIRMATIC..................................................215Setting .................................................216Suspension ..........................................215
AlarmseePanic alarm
Alarm systemseeATA (anti-theft alarm system)
AlternativerouteseeRoute
Ambient lightingSetting (multimedia system) ................150
AndroidAuto............................................ 341Connecting a mobile phone ................. 341Ending ................................................. 342Information .......................................... 341Overview .............................................. 341Sound settings .................................... 342Transferredvehicle data ......................342
AnimalsPets inthevehicle ..................................61
Anti-lock braking systemsee ABS (Anti-lock Braking System)
Anti-skidchainssee Snowchains
Anti-theft alarmsystemseeATA (anti-theft alarm system)
Anti-theft protectionImmobilizer ............................................ 90
Anti-theft protectionseeATA (anti-theft alarm system)
Anticipatory occupant protection
see PRE-SAFE®(anticipatory occu‐pant protection)
see PRE-SAFE®PLUS (anticipatoryoccupant protection plus)
Apple CarPlay™....................................... 339
Connecting an iPhone®....................... 340Ending .................................................341Notes .................................................. 340Overview ............................................. 339Sound settings .................................... 340Transferredvehicle data ......................342
AshtrayFront center console ...........................13 4Rear door .............................................134
538Index

HeadrestraintAttaching/removingthe supplemen‐tarycushion ........................................108EASY ADJUSTluxury headrestraint(front) ..................................................105Front (adjusting mechanically) .............104Front (luxury headrestraint) ................105Rear (extending fromthe front) ...........106Rear (settingthe last position) .............107Rear passenger compartment(adjusting electrically) .........................108Rear passenger compartment(adjusting) ...........................................107Rear passenger compartment (lower‐ing fromthe front) ...............................106Rear passenger compartment (luxuryheadrestraint) .....................................108Rear passenger compartment (set‐ting in position mechanically) ..............109
Head-up Display....................................... 261Adjusting display elements (on-boardcomputer) ............................................ 261Adjustingthe brightness (on-boardcomputer) ............................................ 261Function .............................................. 262
Menu (on-board computer) .................. 261Operatingthe memory function ...........11 5Settingthe position (on-board com‐puter) ................................................... 261Switching on/off ................................. 262
Headliner (care).......................................41 0
Headphones (Rear Seat Entertain‐ment System)Adjustingthevolume ...........................382Overview .............................................. 381Replacing batteries .............................382Selectingtherear display .................... 382Switching on/off .................................382
High beamSwitching on/off .................................14 6
High-beam flasher...................................14 6
High-beam headlampsAdaptive Highbeam Assist ...................148
Hillstart assist........................................214
HOLD function.........................................214Function/notes ....................................214Switching on/off .................................214
HoodFunction (active hood) .........................396Opening/closing ................................. 397Resetting (active hood) ........................ 396
HotspotSetting up (Wi-Fi) ................................. 291
Hydropneumatic suspensionsee MAGICBODYCONTROL
I
Identification plateEngine .................................................466Refrigerant ...........................................474Vehicle ................................................ 466
IgnitionSwitching on (Start/Stop button) ........167
Ignitionkeysee SmartKey
Immobilizer................................................ 90
Indicator lampsseeWarning/indicator lamps
Individual drive programConfiguring ..........................................176
Index553