Drove to the shops on Saturday morning, all fine. When I started the car (Focus Titanium 1.6 diesel) up again I got this message about the parking assist. Everything else works on the car, drives ok, windscreen wipers work. Windows work as do the headlamps, radio etc.
I wiped the sensors down with a cloth and also gave a blast with WD40 as I'd heard this may help if there's moisture in the sensor but no change unfortunately. Is this a relatively simple thing to track down as I spoke to the Ford dealership I bought it from and they want £95 to do a diagnostic check.
Thanks in advance for any advice offered.