That looks like a rather expensive exercise if I am understanding your reply!

I did further research and found a few cases exactly the same. They all had parking brake malfunction and remotes stopped working. It was fuse 129 that blew.

Not confirmed, but it may be that whenever the tailgate is opened there is a Wiring loom that goes into the left side tailgate. This may be exposed and touches the tailgate metal every time opened and causes the short.

This makes sense to me as the problem happened when the tailgate was opened within seconds or minutes. Also, a few years back whenever reverse camera was turned on there would just be either a blank screen or green lines. Surprise surprise this wiring loom also connects to the reverse camera.

So the more I look at the evidence the more it seems like a short from exposed wiring. So I don't think the above method will help, but thanks for your input.

Also, on same day my rear washer pump failed. No warning no nothing, just stopped working. Do you think this may have blew due to current issues?

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2009 135i M Sport Convertible
2008 X5 3.0si
2003 E46 318Ti M Sport Compact - donated to parents
2003 116i Hatchback - donated to brother
2002 316Ti - Sold
2000 318ci M Sport - Sold
1998 318i Sedan - Sold