LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lincoln >> 2021 >> Navigator Base, 4WD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission External Controls >> Description And Operation >> External Controls - Overview
April 5, 2026: LEMON Manuals is launched! Read the announcement.

External Controls - Overview

The shift by wire system uses a push button GSM which interfaces with the TCM to select gear positions.

The shift by wire system also includes a brake shift interlock that will not allow the transmission to shift out of P unless the brake pedal is applied.

The steering wheel has SelectShift® switches mounted to it that allow the driver to manually shift the transmission when D is selected on the GSM.