Inevitably drove through some minor flooding on Wed am commute. Parking beepers don't any more

Reverse selection produces one long beep or 4 short beeps or possibly both consecutively ........... then silence from from rear and front.

Do you think there's a chance they will start working once it all dries out? - he asked hopefully!!!! 2011 TDV6 HSE Stornoway grey, ivory trim

Life's too short to drive an ugly car.

Personally - I think they will dry out they get a battering from the elements day in & day out BUT most need replacing eventually  16MY Estoril Blue SVR.............
17MY Autobiography Dynamic - Corris Grey - WOW.
14MY Autobiography Dynamic - SDV6 - Fuji White
12MY Autobiography - SDV6 - Santorini Black - Dual View - Rear Entertainment - Sunroof.
12MY Autobiography - SDV6 - Orkney Grey - awesome ;(
2005 Java Black - 4.2 V8 Supercharged First Edition- will never be forgotten ;(

Entirely possible that there is some minor damage to the wiring caused by a light bumper bump. The wet gets in and they play up. My rear sensors do this from time to time when it's wet. I know my rear loom is damaged because I've repaired it once. 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

Frequent problem in my experience. Nice dry day, they work fine....

...but if its raining, damp or cold....they might work they might not !  Carl

Thanks Gentlemen. Jolly decent of you to add your thoughts. I'll post result, Andy 2011 TDV6 HSE Stornoway grey, ivory trim

Life's too short to drive an ugly car.