Shift, Brake Interlock: Description

WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

The Brake Transmission Shift Interlock (BTSI) system:

prevents the driver from shifting out of Park unless the service brake pedal is actuated.
is a "Power to Release" shift mechanism.
is mechanically locked in Park until power is applied to the solenoid contained within the shifter.
no brake interlock adjustment is required.
prevents the shifter from being moved from PARK in the event of a solenoid problem or power loss, unless a manual override is actuated.
has an override mechanism to allow the vehicle to be shifted out of PARK in the event of an electrical failure.