I have 2010 Prius with adv tech package. Off and on the PCS warning light comes on when I start the car. I have checked the switch below the dash and it is engaged. has anyone else had this problem. I am over 36000 miles so the cost to fix this will be on me if I go to the dealer. HELP!!!!!!
We had the PCS warning engage a low-level warning, without braking, when we drove over a concrete bulge in an asphalt highway and once when driving in the rain. We were able to repeat the error by driving over the bulge, repeatedly. The false alarms were fixed by adjusting the aim of the radar sensor slightly upward, and all else seems to be working fine. The service manual calls for the radar to be aimed half a bubble above horizontal and ours was aimed about half a bubble below horizontal.
