Looking for any advice peeps got. Last few days my parking sensors have been playing silly buggers.
Cali is about just over a year old, never had any issues with the parking sensors worked perfectly the whole time, anyway on saturday went out in the car, reversed out of the driver way. No issues, single beep when selecting reverse and then usually pips getting quicker as i approached things. Drove for about 30 minutes then went to reverse the car and this time instead of the usual single beep i just got a constant very loud BEEP BEEP BEEP and this continued until i took the car out of gear. Anyway left the car for a few hours and when i came back to it i just popped it in to reverse to see what would happen. Back to normal, single beep and then the usual pips to show detection. So i drove home thinking maybe its ok now. However when i got home and went to reverse the car again, back to the very loud constant beeps again.
Annoying thing is i went to drive the car again today, went to reverse out of my drive to go to work and once again single beep everything working perfectly. No reversing when i got to work. However i had to reverse out when i left work. Once again this was fine single beep and system work fine, but got home and had to reverse to turn round and again LOUD constant beeping.

Anyway so far it seems to be that from cold the system works fine but after a little bit of driving it goes weird and then if left alone for a while it settles down again. Just don't know what to make of it. I assume the beeping is the systems way of saying something is wrong but i cannot understand why it keeps going from good to bad.............. any ideas would be most appreciated