Mercedes-Benz Metris 2021 Operating Instructions Manual page 62

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60
Opening and closing
Arming/disarming ATA (Anti-theft Alarm sys‐
tem)
Arming
Close all the doors.
#
Lock the vehicle with the key.
#
Indicator lamp
1
in the overhead control
panel flashes.
Disarming
Unlock the vehicle with the key.
#
or
Insert the key into the ignition lock.
#
Indicator lamp
1
in the overhead control
panel goes out.
Stopping the alarm
Press the % or & button on the key.
#
or
Insert the key into the ignition lock.
#
The alarm stops.
Function of the tow-away alarm
A visual and audible alarm is triggered if the incli‐
nation of the vehicle changes when tow-away
alarm is armed. This can occur if the vehicle is
raised on one side, for example.
Arming and disarming the tow-away alarm
Requirements:
The doors are closed.
R
The tailgate or rear-end doors are closed.
R
Arming
Lock the vehicle with the key.
#
The tow-away alarm is automatically armed
after about 50 seconds.
Disarming
Open the vehicle with the key.
#
or
Insert the key into the ignition lock.
#
The tow-away alarm is disarmed.
Deactivating
Remove the key from the ignition lock.
#
Press button 1.
#
When the button is released, indicator lamp
2
in the button lights up for approximately
three seconds.
Lock the vehicle with the key.
#
The tow-away alarm is deactivated.
The tow-away alarm remains deactivated until
you lock the vehicle again.
In the following situations, a false alarm can
occur:
When loading and/or transporting the vehicle
R
on a ferry or car transporter, for example
When parking the vehicle on a movable sur‐
R
face, such as a split-level garage
Deactivate the tow-away alarm in these situa‐
tions.
Function of the interior motion sensor
Function
If the activated interior motion sensor detects
motion in the vehicle interior, a visual and acous‐
tic alarm is triggered. This can happen if some‐
one reaches into the vehicle interior, for example.

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