Mercedes-Benz GLC : Anti-theft protection / 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
- When the tailgate is opened
- When the hood is opened
- When the interior motion sensor is triggered
- When the tow-away alarm is triggered
The ATA system is armed automatically after
approximately ten seconds in the following situations:
- After locking the vehicle with the SmartKey
- After locking the vehicle using KEYLESS-GO

Indicator lamp
flashes when the
ATA system
is armed.
The ATA system is deactivated automatically in
the following situations:
- After unlocking the vehicle with the Smart‐
Key
- After unlocking the vehicle using KEYLESS-GO
- After pressing the start/stop button with the
SmartKey in the storage compartment
When the Mercedes‑Benz emergency call
system is active and the alarm stays on for
more than 30 seconds, a message is automatically
sent to the Customer Assistance
Center.
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
,
or
button on the
SmartKey.
or
Press the start/stop button with
the Smart-Key in the stowage compartment
Deactivating the alarm using KEYLESS-GO
Grasp the outside door handle
with the
SmartKey outside the vehicle.
The immobilizer prevents your vehicle from being
started without the correct SmartKey.
The immobilizer is automatically activated when
the ignition is switched off and deactivated when
the ignition is switched on...
This function may not be available in all
countries.
An audible and visual alarm is triggered if an
alteration to your vehicle's angle of inclination is
detected while the tow-away alarm is armed...
Other information:
Driver's knee airbag
Driver's airbag
Front passenger airbag
Window curtain airbag
Side airbag
The installation location of an airbag is identified
by the AIRBAG symbol.
When enabled, an airbag can provide additional
protection for the respective vehicle occupant...
WARNING Risk of accident and injury
due to animals left unsecured or unattended
in the vehicle
If you leave animals in the vehicle unattended
or unsecured, they could possibly press
buttons or switches.
An animal may:
Activate vehicle equipment and become
trapped, for example
Switch systems on or off and endanger
other road users
Unsecured animals may be thrown around in
the vehicle in the event of an accident or
sudden steering and braking maneuvers and
injure vehicle occupants in the process...