X5 Christmas lights - A troubleshooting thread.

[nebula]

I'm starting this thread as a way to document what I am going through with my 2002 X5 3.0.

Background: I purchased an abandoned 2002 X5 for pretty cheap and was told it needed a new alternator. I changed the battery and a blown fuse and the car started up and has mostly been running fine (ABS light is on & a parasitic battery drain issue that I am troubleshooting) until...

About a month ago I was going up a very steep incline and my transmission went into fail safe mode. When I pulled the codes using OBDFusion I felt like I had won the lottery, but in reverse - screenshots attached.

In looking up the first error I found a thread indicating that this could be related to low fuel and would require a fuel filter replacement due to excess sediment in the fuel filter.

I got a fuel filter and spent some time yesterday replacing it, but I don't think that this has resolved my issues entirely. Today I fired up INPA and pulled the error messages and I have a ton of errors from a bunch of variants that I am still going through and deciphering.

In post 2 I will add the error memory report and in post 3 the shadow memory report.