The shift lever is a floor positioned straight 6 positions/modes (P, R, N, D, S, L) type (without paddle shifter) or 5 positions/modes (P, R, N, D, S) type (with paddle shifter).
The shift lever assembly consists of a shift lock solenoid, a park pin switch, and a shift lock release.
The park pin switch is used by the body control module to determine if the vehicle is in the P position/mode as part of the key interlock system.

The shift lock system prevents the shift lever from moving unless certain conditions are met. The shift lock solenoid is normally OFF. After starting the engine in P position/mode, the shift lock stop prevents the shift lever from moving to any other positions/modes from P position/mode. When the brake pedal is pressed and the accelerator pedal is not pressed, the TCM commands the shift lock solenoid ON; the shift lock solenoid plunger in the shift lock solenoid pulls the shift lock stop to release the lock pin. Pressing the shift lever button allows the shift lever to move to any other positions/modes. When the brake pedal and the accelerator pedal are pressed at the same time, the TCM does not command the shift lock solenoid ON and the shift lock system is locked.

When the shift lock system does not operate due to mechanical or electrical problems, you can unlock the shift lock temporarily by inserting the mechanical key into the shift lock release slot and pressing the shift lock release. When the shift lock release is pressed, the shift lock stop releases the lock pin, and the shift lever can move to any other positions/modes.