July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

System, Shift Interlock: Description: Description

Fig 1: Ignition Key/Switch Positions

Courtesy of CHRYSLER GROUP, LLC

1 - LOCK

2 - ACC

3 - ON

4 - START

The Brake Transmission Shifter/Ignition Interlock (BTSI) is a solenoid operated system that prevents the transmission gear shifter from being moved out of PARK without a driver in place.