Hoping for some advice and have posted in the correct section
The left hand angel eye of my 530d 2007 LCI stopped working. Being an electrical engineer, I thought I would do some diagnostics before sending to a local specialist. When checking I found that no voltage was getting to the lamp, upon further testing and some forum reading here , I traced it back to the LCM module.
As the car was under warranty, I thought I would try my luck and see if it would be covered. For this I had to book into my garage of choice to be diagnosed.
I booked into a local BMW specialist I intended to use for all my future work and explained the situation.
Unfortunately neither the diagnostic work, nor the repair were coved under my warranty The garage was not very helpful and charged me full price for the diagnostics, then told me the LCM was faulty, which was exactly what i had told them when i booked it in..
The garage informed me that as the LCM had detected several short circuits, as a result had shut down and could no longer be reactivated. I found this hard to believe but the owner stood firm on this?
Anyway, after a frustrating conversation with the garage they informed me that I would have to purchase a new LCM and then have it coded back into the car. Once I had picked myself up off the floor at £900 for the job , I explained that this was not going to work for me! £900 for a bloody side light - surly not? The owner did however offer to code out the warning light for £120 but needed the car for a day, as he said it takes at least 4 hours to complete. Yeah thanks for nothing!
I asked if I could purchase a second hand unit and have this coded in. The garage replied with no, it would not be possible to recode to my car, as the mileage is held in the LCM and this would show as a discrepancy on the dashboard?
My options as I see them:
1. Pay the £900 and sulk....
2. Get a second hand LCM unit and have it coded in to the car, if this is possible?
3. As option 2 and do it myself buying the software and learning?
3. Take a feed from the working right side light and have it switch on a transistorised relay, bringing in a new fused supply for the light. This would however leave me with the annoying faulty light symbol.
4. Do option 3 and learn how to code the faulty light out of the system. If this is possible?
1. Can the LCM shut down this single output, never to be reactivated again
2. Can my original LCM be repaired?
2. Can I fit a second hand unit and have it recoded without taking away the authenticity of my mileage and displaying on the clocks.
3. If a second hand unit can be fitted, what software and cable is required and how difficult is the process.
I have no hesitation on learning how to either code a second hand LCM, or code the light out. I am an electrical engineer by trade; however I retrained some 15 years ago. I am now an IT support engineer.
Hopefully some of you have made it to the end and can offer some advice.
Thanks in advance