[omadab]

Hi all,
I recently noticed my rear left turn signal on my 2011 E92 328xi LCI stopped working. Originally I thought it was a bulb or the tail light housing... but I was wrong.
I swapped the housings and the rear left turn signal works fine on the rear right wiring harness!
So now, I am not sure where to start. My research points towards the footwell module. Is this correct?
Why would a footwell module only cause the left side not to function? Where should I start with my diagnosis?

All help is appreciated. Cheers

[Captain Buumer]

Start by examining the wires where they get mechanically bent.

[Serf27]

The FRM could have stopped sending power to that side.
Can you reset the FRMA counters?

[omadab]

Originally Posted by Captain Buumer

Start by examining the wires where they get mechanically bent.

I will look at where they enter the trunk, apparently that's where there are issues most of the time

[omadab]

Originally Posted by Serf27

The FRM could have stopped sending power to that side.
Can you reset the FRMA counters?

I am seeing an error code for short circuit counter, planning on resetting it over the weekend but I feel like I should find the short circuit first haha

[Serf27]

I am not sure how often the FRM wants to see the short before it stops sending power.
Does it do it right away as to prevent any fires?
If so, could a bulb internally short and cause the issue?

Does it wait until it sees it a few times?

I think there’s only 1 ground wire on the pigtail, you can check for continuity from the other power wires to chassis ground to see if any of the wires are touching ground.