Alarm triggered by interior motion sensor, function - GF80.50-P-3022S

MODEL 215, 220 with CODE (491) USA version 

MODEL 215, 220 with CODE (882b) Interior motion sensor (only with ATA) 

Function prerequisites 

An alarm can only be triggered by the IMS when

• the interior motion sensor transmitter and receiver (A26/14) is activated and
• the IMS  function is not switched off  .

When the trunk lid is opened by the remote trunk release (RTR) the alarm is not triggered by the IMS as long as the trunk lid is open.

Function sequence 

The interior motion sensor (IMS) function monitors the vehicle interior using ultrasonic signals with the aid of the interior motion sensor transmitter and receiver (A26/14). If motion is recognized in the passenger compartment this is indicated to the overhead control panel control module (N70) by the IMS receiver over a data bus. The overhead control panel control module (N70) transmits the message "Alarm triggered by IMS" to the CAN bus.

The front left SAM control module (N10/6) triggers an optical  and acoustic alarm  .

The IMS function can trigger max. three alarms in sequence. Then the ATA must be reactivated for continuation of this function.