I own a 2011 RSS with 22k miles, runs perfect, no previous trouble. I have a check engine, with a VSS, ABS, DPS Fault with multiple lights on, and the tach randomly drops to zero, but the motor seems to be running fine. It also has a P0600 code. I tried replacing the battery, but it still is showing the Faults. Seems to show more faults at lower speeds, not sure if that means anything. Any help would be appreciated.