System, Shift Interlock: Description

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.

The Brake Transmission Shifter/Ignition Interlock (BTSI) is an electronically operated system that prevents the transmission gear shifter from being moved out of PARK without the proper driver inputs. The system contains a solenoid that is integral to the shifter assembly. The solenoid permits shifter movement out of PARK when the brake is depressed.

A BTSI override is provided on the side of the shifter mechanism to allow the vehicle to be shifted out of PARK in the event of an electrical failure.