My 2017 backup warning beep suddenly stopped working all the time, and only works randomly - more not than often. Does anyone know how to fix this? Don't know what more extra detail to add - I could go through a fence and the beep wouldn't go off. It does work at times, but I can't rely on it. It used to work all the time. I tried cleaning what appears to be a camera around the license plate area, but it did not help.
How long has your 2017 Subaru Forester had this problem?
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Testing should take place in a location it normally beeps every time you get close to an object.
Does it work every time at that location under same conditions?
Intermittent failures are near impossible to diagnose.