Ŕeverse light not working, bulb ok and fuse ok. Stops reverse sensors working.
I have a strange fault that I can find anywhere else on the forum and I'm wondering if anyone can advise on it before I see an auto electrician.
My wife has a manual b-max (2013).
I noticed the proximity had stopped working when reversing (no beeping). After checking from behind whilst my wife put the car in reverse (taking my life in my own hands I know) I also noticed the reverse light had failed.
Ive checked fuse 3 (ok) and the bulb (also ok), but replaced them both anyway.
Now the actual symptoms of the fault are:
1. (Bulb removed) The proximity sensors work and the beeps are heard in the car, also 12v metered at the lamp holder.
2. (Bulb inserted) The proximity sensors can be heard clicking (with ear inserted on bumper) but the are no beep alerts in the car also the reverse light doesn't come on.
3. Remove the bulb and I'm back at point one with 12v at the holder and beeps working.
Is it possible the wiring loom is failing somewhere and starting to short?
Enough to drain the 12v but not enough to blow the fuse.