Mercedes-Benz A-Class Operator's Manual page 79

% In the event the engine cannot be started
(yet the vehicle's starter battery is charged),
the system is not operational. Contact an
authorized Mercedes-Benz Center or call
1-800-FOR-MERCedes (in the USA) or
1-800-387-0100 (in Canada).
ATA (anti-theft alarm system)
Function of the ATA system
If the ATA system is armed, a visual and audible
alarm is triggered in the following situations:
when a door is opened
R
when the tailgate is opened
R
when the hood is opened
R
The ATA system is armed automatically after
approximately ten seconds:
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 activated.
The ATA system is automatically deactivated:
After unlocking the vehicle with the Smart‐
R
Key
After pressing the start/stop button with the
R
SmartKey in the stowage compartment
( page 126)
→
Opening and closing
After unlocking the vehicle using KEYLESS-
R
GO
Deactivating the ATA
Press the % or & button on the Smart‐
#
Key.
or
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.
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