My Prius has been jolting when the ICE is on and going from drive to park. It almost seems like the ICE is trying to turn off but does not and it jolts the car as a result. Is this normal? It also jolts sometimes when the ICE is on and when going from park to drive. The ICE remains on although it almost "jumps" or "jolts." I have not noticed it before, and it only happened intermittently at first, although now it does it most of the time. It does not really have a noise associated although it is mostly a "jump" by the car. Do you think the dealership could diagnose this problem (if it is one)? When I go to them, they always tell me the car will throw codes if something is wrong. The codes are accurate I am sure when they pop up although do codes always pop up when something is wrong?