1

The neighbor's brake's lights won't turn off: the fuse has to be pulled to avoid draining the battery. He asked me to check the fuse and it tested good (continuity test).

  • What is the procedure to test / isolate fault?
  • Is there a brake sensor that could be 'stuck'?

Will do my best to answer any questions that aid diagnosis.

2

Most common fail is the switch either failed inside or stuck on with dirt.

Less common but has happened is a short with another live wire but then pulling the fuse would not be the cure.

So, check the switch on the brake pedal.

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  • I agree with this, I've also seen objects or even the carpet getting wedged, preventing the switch from opening. – GdD Aug 6 at 7:39

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