Anti-Theft Protection - Mercedes-Benz A-Class 2020 Operator's Manual

Problem
Vehicles with a panoramic sliding
sunroof: The sliding sunroof or the
roller sunblind does not operate
smoothly.

Anti-theft protection

Function of the immobilizer
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.
Possible causes/consequences and
Immediately after automatic reversing, pull and hold the 3 button down again to the point of resist‐
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ance until the sliding sunroof is closed.
The sliding sunroof will be closed with increased force.
If the sliding sunroof is obstructed again and reopens again slightly:
Repeat the previous step.
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The sliding sunroof will be closed again with increased force.
Pull and hold the 3 button little by little until the sliding sunroof is fully closed.
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Pull and hold the 3 button little by little until the roller sunblind is fully closed.
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Use automatic operation to fully open and then close the sliding sunroof.
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When leaving the vehicle, always take the Smart‐
Key with you and lock the vehicle. Anyone can
start the engine if a valid SmartKey has been left
inside the vehicle.
% In the event the engine cannot be started
(yet the vehicle's battery is charged), the
system is not operational. Contact an
authorized Mercedes-Benz Center or call
M M Solutions
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
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Opening and closing