No brake lights, but brake switch OK
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AudiWorld Member
Joined: Mar 2010
Posts: 466
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No brake lights, but brake switch OK
Hey guys, my PC needed a wipe and clean recently, and I haven't re-installed my ElsaWin yet. I need help, please.
If I press the brakes and there's no brake lights, and the car won't shift out of park, I need to change the brake light switch, right? Well, that's what I did...
It didn't work. Both switches test perfectly, but no luck. I even jumped the plug connection to the switch to make sure. Nothing.
Recently, when I put the car in park and took my foot off the brake, the shift lock solenoid would cycle on-off, on-off. I also heard a ticking (in rhythm with the solenoid) coming from behind the dashboard on the left side of the steering wheel. When I put my foot on the brake, the noise stopped. So I turned off the car, I got down under the dash and wiggled the brake light switch, and the issue went away.
A few days later, no brake lights, and no shifting out of park. Thank God the car was in my own garage, and not at work.
Is there a block relay for the brake system that might have fried? Or maybe a fuse that blew? That's about the only thing I can think of that would do this, other than the switch.
If I press the brakes and there's no brake lights, and the car won't shift out of park, I need to change the brake light switch, right? Well, that's what I did...
It didn't work. Both switches test perfectly, but no luck. I even jumped the plug connection to the switch to make sure. Nothing.
Recently, when I put the car in park and took my foot off the brake, the shift lock solenoid would cycle on-off, on-off. I also heard a ticking (in rhythm with the solenoid) coming from behind the dashboard on the left side of the steering wheel. When I put my foot on the brake, the noise stopped. So I turned off the car, I got down under the dash and wiggled the brake light switch, and the issue went away.
A few days later, no brake lights, and no shifting out of park. Thank God the car was in my own garage, and not at work.
Is there a block relay for the brake system that might have fried? Or maybe a fuse that blew? That's about the only thing I can think of that would do this, other than the switch.
Thread Starter
AudiWorld Member
Joined: Mar 2010
Posts: 466
Likes: 0
Found the problem...
10-amp fuse for the brake lights had blown.
The driver's brake bulb had blown, and the filament was drooping, causing the filament to also close the circuit. It was actually a short in the bulb itself.
I swapped the fuse and it blew immediately. I checked the bulbs, found the problem described above, pulled the bulb out, and a new fuse fixed the issue.
The driver's brake bulb had blown, and the filament was drooping, causing the filament to also close the circuit. It was actually a short in the bulb itself.
I swapped the fuse and it blew immediately. I checked the bulbs, found the problem described above, pulled the bulb out, and a new fuse fixed the issue.
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