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The immobiliser is automatically activated when
the ignition is switched off and deactivated when
the ignition is switched on.
ATA (Anti-Theft Alarm system)
Function of the ATA system
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 96)
/
when tow-away protection is triggered
R
(
page 95)
/
The ATA system is primed automatically after
approximately ten seconds in the following situa‐
tions:
after locking the vehicle with the key
R
after locking the vehicle using KEYLESS-GO
R
Indicator lamp
1
flashes when the ATA system
is primed.
The ATA system is deactivated automatically in
the following situations:
after unlocking the vehicle with the key
R
after unlocking the vehicle using KEYLESS-
R
GO
Internal use only
Opening and closing
after pressing the start/stop button with the
R
key in the stowage compartment
(
page 156)
/
%
When the Mercedes‑Benz emergency call
system is active and the alarm stays on for
more than 30 seconds, a message is auto‐
matically sent to the Customer Assistance
Centre (
page 337).
/
Deactivating the ATA
Press the Ü, ß or p button on the
#
key.
or
Press the start/stop button with the key in
#
the stowage compartment (
/
Deactivating the alarm using KEYLESS-GO
Grasp the outside door handle with the key
#
outside the vehicle.
Function of tow-away protection
An audible and visual alarm is triggered if an
alteration to your vehicle's angle of inclination is
detected while tow-away protection is primed.
95
page 156)
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