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Car Forum / Saab Cars / June 2007'97 900 SE Turbo - Brake light problem
I'm hoping someone here may know how to troubleshoot this. When I started the car the other morning, the "Brake Light Failure" message came up. I immediately drove to Kragen's and bought new bulbs. Replacing the bulbs didn't fix the problem. So I replaced the fuse. Didn't fix it. So I backed up to the store's glass windows and stepped on the brakes. In the reflection, I could clearly see that the driver's side brake light was on all the time, the passenger's side only when I stepped on the brake. Has anyone else encountered this problem? How did you fix it? Many thanks! - Chris (who doesn't have time to take it to a shop) Sounds like it might be an earthing problem. Check the rear loom around the boot to check that the points at which it is earthed by connection to the body/chassis are good and not corroded. Peter. > I'm hoping someone here may know how to troubleshoot this. > [quoted text clipped - 11 lines] > > - Chris (who doesn't have time to take it to a shop) Will do - Thanks Peter! No problem, good luck! > Will do - Thanks Peter! > No problem, good luck! Worth looking at the wiring diagrams in Haynes to see how logically a brake lights can be on all the time. Maybe a relay or something. >Worth looking at the wiring diagrams in Haynes to see how >logically a brake lights can be on all the time. Maybe a relay >or something. I don't have a diagram handy, but on this year I think anything that requires a "relay" is shuttled through the ICE unit (and you won't find a relay). Brake lights might be an exception. For the OP - see Amazon.com if you are in the USA, look for a Haynes manual. You won't find them many places as they have to be imported from Europe. >>Worth looking at the wiring diagrams in Haynes to see how >>logically a brake lights can be on all the time. Maybe a relay >>or something. > I don't have a diagram handy, but on this year I think anything that > requires a "relay" is shuttled through the ICE unit (and you won't > find a relay). Brake lights might be an exception. > For the OP - see Amazon.com if you are in the USA, look for a Haynes > manual. You won't find them many places as they have to be imported > from Europe.  SignatureRichard & Mary Sutherland-Smith 19 Webb Road, Wanganui 4500, NZ >>Worth looking at the wiring diagrams in Haynes to see how >>logically a brake lights can be on all the time. Maybe a relay >>or something. > I don't have a diagram handy, but on this year I think anything that > requires a "relay" is shuttled through the ICE unit (and you won't > find a relay). Brake lights might be an exception. > For the OP - see Amazon.com if you are in the USA, look for a Haynes > manual. You won't find them many places as they have to be imported > from Europe. Brake switch - purple - to 43 on TWICE 1 on TWICE - yellow/white - to R brake light 24 on TWICE - to high level brake light 25 on TWICE - blue/orange and orange/blue? - to L brake light Blacks to earth E8, below left hand A-post. SignatureRichard Sutherland-Smith Wanganui 4500, NZ
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