Member, Sport: Off DSC: On (>50 posts)
Join Date: Oct 2015
Location: 101 East
Thanked 22 Times in 21 Posts
Easy . Just get the car plugged it, and the BMW (i personally like and use ISTA/D) diagnostics will tell you exactly which specific sensor is on the fritz (of if you have real rotten luck, the PDC module itself: possible but unlikely). Any one single bad sensor front or rear, will disable the entire PDC system until the fault is rectified. But once the faulty sensor is replaced, the system comes back online without any fuss. No need to perform any reset via the diagnostic software too (unless you want to clear off all the historical fault codes).
From VTEC to VANOS