Alarm Activates When LOCKING Doors after short at Trunk Lock actuator

[Jehu]

I caused a short when I made a connection from one of the two power wires for the trunk actuator to one of the command/signal lower voltage wires from the other connector.

Now the alarm goes off when locking the doors.

I think I made it worse in fumbling desperation by disconnecting what I think is the Trunk mounted level sensor (tow away sensor) and at this time the remote (three button Fob) no longer communicates with the car even after re-connecting this sensor.. maybe an initialization block?

Anyway.. I had the car scanned by a BMW trained tech who knows e34 540's he used to do the short block swaps way back.

He suggested I may have damaged an actuator .
The locks lock then open then lock again as the alarm is triggered.


There was no initialization block when he scanned it.

I was unaware an actuator could be damaged in a way that would cause it to trigger the alarm . I thought their failure just caused the system to kick back and you have to re-lock.

Just wanted to see if anyone had a brainstorm with this.. I have a copy of the BMW EWS but haven't looked at it much as reading schematics is a skill I have yet to grasp.

I am assuming the shorting which occurred would need to be traced to the next nearest component first which could in any way trigger the alarm.


anyway I hear or heard before disconnecting that trunk mounted level sensor the clicking in both the back seat locking unit and the front left A pillar/foot well mounted Alarm module..

I am willing to replace actuators and whatever modules may have been damaged yet I am hoping I might proceed with better understanding which could help avoid unnecessary expenses

Its been a rough few weeks here.. Hope everyone is doing well.