Originally Posted by
Sachin
Hello all
New member here.
I have a 2006 UK coupe and the brake lights are all out. I have replaced the brake light switch and still no joy. Any ideas? Is there a brake light relay to check? I couldn’t see one on the wiring diagram and I did a search through the forum but couldn’t exactly ascertain where it might be.
**Sorry should add that I have checked the fuse in the dash fusebox…
Thanks everyone.
Two things:
1) The "brake lamp switch" at the pedal does not, apparently, directly activate the brake lights. IF we can believe the service manual, (not sure we can) that switch is used to enable shifting out of park but apparently not turning on the brake lights. There is an output from the brake controller that triggers the brake lamp relay when you press the brake pedal.
2) So the fuse is good, is there POWER to the fuse? THere should be power to that fuse anytime the key is in the "ON" or "Start" positions, but not when the key is off.
Next, the brake lamp relay is in the underhood fuse box, it is triggered by a switched ground from the Brake controller. If there is power to the fuse, then I'd want to see if the relay is being triggered when you hit the brake.
