Mercedes-Benz C-Class Convertible 2021 Operator's Manual page 85

The ATA system is armed automatically after
approximately ten seconds in the following situa‐
tions:
After locking the vehicle with the SmartKey
R
After locking the vehicle using KEYLESS-GO
R
Indicator lamp 1 flashes when the ATA system
is armed.
The ATA system is deactivated automatically in
the following situations:
After unlocking the vehicle with the Smart‐
R
Key
After unlocking the vehicle using KEYLESS-
R
GO
After pressing the start/stop button with the
R
SmartKey in the storage compartment
( page 126)
/
%
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
Center ( page 289).
/
% In the case of severe battery discharging,
the anti-theft alarm system is automatically
deactivated to facilitate the next engine
start.
Deactivating the ATA
Press the Ü, ß or p button on the
#
SmartKey.
or
Opening and closing
Press the start/stop button with the Smart‐
#
Key in the stowage compartment
( page 126)
/
Deactivating the alarm using KEYLESS-GO
Grasp the outside door handle with the
#
SmartKey outside the vehicle.
83