Mercedes-Benz S-Class Saloon 2021 Owner's Manual page 113

110 Opening and closing
110
Anti-the he prot Anti-t protection ection
F F unction of t unction of the immobiliser he immobiliser
The immobiliser prevents your vehicle from being
started without the correct key.
The immobiliser is automatically activated when
the vehicle is switched o , and deactivated when
the vehicle is switched on.
A A T T A A (Anti- (Anti-The The Alar Alarm syst m system) em)
F F unction of t unction of the AT he ATA syst A system em
If the ATA system is primed, a visual and audible
alarm is triggered in the following situations:
when a door is opened
R
when the boot lid is opened
R
when the bonnet is opened
R
when interior protection is triggered
R
( page 111)
/
when tow-away protection is triggered
R
( page 111)
/
The ATA system is primed automatically a er
approximately ten seconds in the following situa-
tions:
a er locking the vehicle with the key
R
a er locking the vehicle using KEYLESS-GO
R
Indicator lamp 1 ashes when the ATA system is
primed.
The ATA system is deactivated automatically in the
following situations:
a er unlocking the vehicle with the key
R
a er unlocking the vehicle using KEYLESS-GO
R
a er pressing the start/stop button with the
R
key in the stowage compartment
( page 202)
/
%
When the Mercedes‑Benz emergency call sys-
tem is active and the alarm stays on for more
than 30 seconds, a message is automatically
sent to the Customer Assistance Centre
( page 401).
/
Deactiv Deactivating t ating the ATA he ATA
Press the Ü, s or H button on the
#
key.
or
Press the start/stop button with the key in the
#
stowage compartment ( page 202)
/
Deactiv Deactivating t ating the alar he alarm using KEYLESS-GO m using KEYLESS-GO
With the key outside the vehicle, touch the
#
inner surface of the door handle.