Triggering of anti-theft alarm (ATA), function

P80.50-2023-09

Illustrated on vehicle, model 220 interior motion sensor (IMS) code 882

A1 Instrument cluster

A26/14 Interior motion sensor transmitter and receiver

B33 ATA inclination sensor

E1e5 Front left turn signal lamp
E2e5 Front right turn signal lamp

E3e1 Rear left turn signal lamp

N70 Overhead control panel control module

S17/3 Left front door switch

S17/4 Right front door switch

S17/5 Left rear door switch
(model 220 only)

S17/6 Right rear door switch
(model 220 only)

S62 Engine hood switch (ATA)
OPEN and CLOSED

S88/3 Trunk lid closing assist locking eye microswitch

E4e1 Rear right turn signal lamp

E6/5 Left exterior mirror turn signal lamp

E6/6 Right exterior mirror turn signal lamp

H3/1 Alarm siren with auxiliary battery

N10/6 Left front SAM control module

N10/7 Right front SAM control module

N10/8 Rear SAM control module

N69/1 Left front door control module

N69/2 Right front door control module

An anti-theft alarm (ATA) can be triggered by

 actuation of an exterior surface contact

 the anti-towing sensor (TS)

 the alarm signal siren with additional battery (H3/1)

On vehicles with code 882 or 491 () in addition by:

 the interior motion sensor (IMS)

Function prerequisites
ATA activated and associated inputs ready to trigger an alarm.

Function sequence
The inputs ready for alarm are checked by the control modules.
If two subsequent checks of the same input do not indicate the non-actuated state the corresponding control module transmits the CAN message to trigger an alarm. The left front SAM control module (N10/6) triggers an acoustic as well as optical alarm.



Moreover, on vehicles with code 491 () a panic alarm can be triggered with the panic alarm switch on the remote control key.