I've got a 2006 Z4 3.0 roadster. The other morning my horn started blowing on its own... if I start the car it stops, and if I blow the horn the wipers wipe... if I put the wipers on everytime the wipers sweep the horn blows. Since this started im also getting a DTC warning light, the brake light that comes on red when the handbrake is applied glows in yellow, but the lights come on randomly when I start the car, sometimes I have no lights on and sometimes I do. I did put a battery disconnect in my car 2 years ago so I can shut the battery down, if I don't do it the horn continually sounds. This car was fine and stored in a garage for 5 months, this all started a few days after I started driving it again. Any ideas?
Horn issues, and lights on in dash, all started at the same time
- Thread starter Tooch
- Start date
1st, use a code reader & see if anything pop's up. If nothing pop's up that could be tied into your issue, then check your ignition switch.
A failing switch could do the same things as a weak battery. Please read the following: https://www.bimmerfest.com/threads/signs-of-a-failing-ignition-switch.358204/ After reading please google bmw ignition switch problems and read some of the posting about strange electrical issues.
A failing switch could do the same things as a weak battery. Please read the following: https://www.bimmerfest.com/threads/signs-of-a-failing-ignition-switch.358204/ After reading please google bmw ignition switch problems and read some of the posting about strange electrical issues.
