Got an intermittent issue with my parking sensors on my 2009 4.7 GTS. After a few days of heavy rain, when I put car in reverse I get the yellow warning message, 'parking help unavailable'. No parking sensors work. Turn engine off and restart, front sensors seem fine. Into reverse, same message. Today, a day of dry weather, sun on the car, sensors seem to be working fine again. I suspect a rear sensor is on its last legs. Two quick queries:
Cheers, Nigel
- Is it possible to tell which one, without a diagnostic check?
- How easy is it to purchase and replace the rear sensors?
Cheers, Nigel