Jump to content

Search the Community

Showing results for tags 'brake light failure'.

More search options

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Content Type


  • Rules & FAQs
    • Rules & FAQ's
  • Sponsors
    • Chris Knott Insurance services
    • Cotswold BMW
    • MStyle
    • BMW Cables
  • General
    • Hello I'm New
    • General Discussion
    • DVLA and Insurance Queries
    • Picture & Video Gallery
    • Suppliers
    • Fun Stuff
    • Spotted
  • Meets & Events
    • BMW5 Meets & Events
    • Non BMW5 Trackdays
    • Other Meets & Events
  • Classifieds
    • Cars
    • Parts & Breakers
    • Wheels & Tyres
    • General Items
    • Wanted
    • Autotrader, eBay, Pistonheads etc Adverts
  • Technical
    • E12 1972-1981
    • E28 1982-1988
    • E34 1988-1996
    • E39 1996-2004
    • E60/E61 2004-2010
    • F07/F10/F11 2010-2017
    • G30/G31 2017-
    • ///M Powered
    • ALPINA 5ers
    • Audio & Navigation
    • Intravee
    • Diagnostics
    • Coding
    • Detailing
    • Projects
    • Track Talk
  • Other BMW Technical
    • 1 Series
    • 2 Series
    • 3 Series
    • 4 Series
    • 6 Series
    • 7 Series
    • 8 Series
    • i Series
    • X Series
    • Z Series
    • Other BMW Tech Talk
  • Other Technical
    • Other Marques
    • Computer General Help

Find results in...

Find results that contain...

Date Created

  • Start


Last Updated

  • Start


Filter by number of...


  • Start



Website URL





Found 1 result

  1. Big Will

    525iX won't start

    So I finally picked up my 1995 525iX touring about 3 weeks ago. The car is cosmetically in absolutely gorgeous shape with only 170K kms but had been off the road for the past 7 years as it was someone's project car in Germany. The dealer that was selling it had done some work (replacing fluids, spark plugs and exterior trim pieces, spraying on rust-proofing oil etc to keep it looking nice underneath). I had it inspected by Dekra in The Netherlands and they spent half a day with the car, driving it etc. and gave me their 9 page report. It needed new fuel lines, new rear brake pads and ideally the front shocks replaced because a little rust had formed on the pistons - from cracks in the strut boots), and a new AC compressor. The dealer and I came to a fair agreement where they did all the labor and I supplied the parts. I took the opportunity to upgrade the front suspension to the "sport" struts and springs and all new hardware. The fuel lines were replaced, new fuel filter and some brackets etc., new rear pads and rotors and parking brake hardware, new AC compressor and drier. After the work was done I went to pick up the car and began driving it back across Germany. What should have been a 5 or 6 hour trip turned into a 14 hour nightmare as the first time I stopped for a coffee the car wouldn't start! It cranked strongly but wouldn't get going. After a couple hours of trying on and off, it did until I had to stop for gas. I could hear the fuel pump priming and the battery seemed strong plus it had just driven over 200 kilometers so should have been charged up. When I finally got to my city, I got a warning message on the dash of a "brake light electric failure - see owner's manual" (in German) and apparently didn't have brake lights anymore. This would come and go over the next two days until I got stuck at a gas station, absolutely couldn't start the car and had to have the car towed to a repair shop. We tried starter fluid before towing it and that did not work. The car spent over 2 weeks at an A.T.U. repair shop. They initially diagnosed it as a fuel pressure regulator noting that they were getting much too high fuel pressure and replaced that with a BMW part. The car still didn't start. I then supplied them with a new BMW fuel pump relay and Motronic relay and a new Hella branded CPS which was what I thought the problem was. No luck. The repair shop said they were finally able to "access the computer" and that the problem is the car's immobilizer and only BMW can fix this. As an additional detail, I noticed that when the car first wouldn't start, when I tried unlocking the car, the alarm would go off. During the couple days I had the car where it would sometimes start, I replaced the batteries in the remotes but was unable to pair them to the car. The procedure did not work. Of course I could still unlock the car manually with the key. On Wednesday I had to have the car towed from this repair shop to the nearest BMW dealer. The dealer was given all the information as to what was done so far and spent yesterday trying to diagnose the problem. They claim to have their most experienced tech working on my car and so far he is stumped! Any ideas for this mystery? Sorry for posting another "e34 no start" thread, but I thought this might be interesting. After 3 weeks I can't even register my car because it can't go through the inspection like this to get normal license plates. UPDATE: BMW claims that the readings from the new Hella CPS are bad. They are going to replace it with a BMW sensor and see if it works. If not, they think it's the main computer...which I imagine is rather expensive. I come from the Volvo enthusiast side and that's really not normally a problem. Is that common with e34s?