Battery Problems of BMW 525

Trunk locking failure. Unable to open trunk with remote control or switch inside the car. I was only able to open the trunk with the key over-ride from the trunk. BMW USA customer service did not provide any assistance to open the trunk. I had to read the manual to be able to over-ride the electrical systems. Once I opened the trunk the trunk would not close. After extensive internet research and electrical trouble-shooting, I found broken brown electrical wire in the trunk harness boot above the battery compartment. I found several cases posted in the internet. This is a common problem with BMW. BMW USA customer relations was contacted to report this safety issue and a design flow but she did not offer any interest to resolve the issue. I offered the opportunity to BMW technicians / engineers to inspect the design flow and perhaps they can provide a solution to this defect but she wanted me to go to the dealer and pay the dealer to diagnose the problem ($150 per hour fee). I was clear that I already found the problem and can simply splice the wires back but I was calling because I am concern about the safety of other BMW drivers. Electrical shortage next to the battery can be a safety concern! BMW customer service manager did not offer any help either.

See all problems of the 2007 BMW 525 🔎.