Rear parking sensors malfunction?

[BlueFez180]

Good day everyone.
Need some advice or any help at all.
I started my car in the morning engaging reverse and my rear sensors were working perfectly fine, after 30min on the road arrived at work putting the car in reverse it just made 3 simple beep sounds with park pilot on screen and exclamation mark(see attached photo)
The road was wet didn’t drive it hard just normal speed limit.
What could fix this issue?

 

[SteveS]

We don't even have that on our FiSTs in the US, but on my pickup truck I sometimes get a warning like that if the sensors get iced over or muddy. Clearing the debris off them fixes it.