Parking Distance Control (PDC) intermittent
When I engage reverse gear the PDC will beep erratically whether I’m near anything or not. Kind of ‘beep,,beep,,,,beep,beep,,beep,,,,,beep,beep’ (if that makes sense). When I get quite close to an object it works normally; getting faster until I get a continuous tone. Very occasionally it works without problems.
I had the idea of unplugging one sensor at a time to narrow it down, but then none of them worked. They must be wired in series I suspect, or a safety feature.
I then sat in the boot and covered each one in turn to see if one didn’t work. But each caused a continuous beep.
The car is out of warranty so I’d like to fix it myself if possible. Has anyone seen this behaviour before and if so what fixed it?
Are we talking a single sensor becoming over sensitive, or the control box in the boot, or something else?