Rear sensor problem.

[paul65]

hi everyone, i have noticed when it's damp or frosty and i put my car into reverse in the cold or frost my speaker gives out a loud beep goes off and my sensor count down beeps fail to come on 

but in normal weather works fine anyone any ideas thanks.

[Leo]

My wife’s previous car had this problem, which turned out to be caused by dampness or condensation inside a sensor, caused by a change in temperature. It occurred only in the winter, mostly in frosty weather.