Wish I could immobilise the sensors on my old Subaru Outback, the nugget who wired my towing electrics didn't do it right. They bleep all the time I'm reversing while towing.
Thank you all for your answers.
Tilly2, I want to tow a caravan, and the sensors would tell me, when I am reversing the caravan, that I am about to hit something! (So much for AI!)
It seems that connecting the sockets from the 'van will automatically switch off the rear sensors.