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Brake and taillights not working properly

Tiny
KELLYWORMAN
  • MEMBER
  • 2003 BMW 325I
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 96,000 MILES
Brake light are stuck on and won't go off while the car is running. When the car is in the on position they work as they should but once the car is started they stay on and won't work properly. I have changed the brake fluid and the brake switch has been replaced three times I can't seem to figure it out.
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Monday, June 3rd, 2019 AT 5:09 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Hello,

There are four fuses that run the system we should check those first. Here is the brake light wiring diagrams so you can see how the system works if the fuses are good you may need the lighting switching module:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
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Tuesday, June 4th, 2019 AT 2:59 PM

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