Mechanism, Brake Transmission Shift Interlock: Description: Description
WARNING: This page is about a different car, the 2015 Fiat 500. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Remove the small external trim cover on the right side of the shift lever housing to actuate the Brake Transmission Shifter/Ignition Interlock (BTSI).
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 (2) that is integral to the shifter assembly. The solenoid permits shifter movement out of PARK when the brake is depressed.
A BTSI override (3) is provided on the side of the shifter mechanism (1) to allow the vehicle to be shifted out of PARK in the event of an electrical failure.