Car gear selector (electronic shift lever)

User interface for selecting drive modes and housing the unlock button and manual shift actuator.

Typically integrated with the selector switch assembly and contains the mechanical button/actuator used to trigger gear changes or unlock the detent.

Safety interlock that must be pressed to move the lever from certain positions, for example out of Park.

Built into the lever head and mechanically or electronically interlocks with the selector position switch, removal and repair steps described in service procedures.

Displays the selected gear to the driver, using backlighting for visibility in low light.

Illumination is provided by LEDs mounted in the selector assembly, service information documents LED lighting issues and replacement procedures.

Provides manual upshift and downshift input when the driver uses the Steptronic/manual mode on the selector.

Integrated with the selector to send shift commands to the transmission control unit, described in BMW transmission control documentation.

Structural enclosure that contains the lever mechanical parts, PCB and internal connectors.

Contains selector switch electronics and connectors, the housing is commonly replaced as a single assembly in service actions.

Converts physical lever motion to the sensed movement for the internal position sensors and for detent engagement.

A sliding selector arm couples lever motion to Hall sensors and detent elements as described in transmission and selector diagrams.

Provides tactile detents for each gear position and helps retain the lever in the selected position until released.

Selector assemblies include detent springs and slides that engage with the selector mechanism, referenced in removal and installation factory procedures.

Electronically locks the shifter or transmission in Park to prevent unintended movement.

Selector assemblies include an interlock component or solenoid that is controlled electronically and referenced in service bulletins.

Reads position sensors, drives indicator LEDs, manages interlock logic and communicates selector state to the vehicle transmission control module.

Identified in service documents as the control electronics within the gear selector switch, failures cause loss of manual mode or lighting issues.

Non contact sensors that detect the lever angle or position and provide electronic position data to the selector PCB.

BMW implements selector position detection with Hall sensors inside the selector assembly as described in transmission overview documentation.

Electrical interface that carries power, ground and signal lines between the selector assembly and the vehicle CAN or transmission control module.

Multi pin connector transmits Hall sensor signals, illumination power and lock signals, service documents instruct disconnecting the battery before removal.

Provide backlighting for gear markings and locator lighting for the selector.

Replacement and repair procedures for flickering LED lighting are covered in BMW service information bulletins.

Decorative trim and mounting interface that secures the selector assembly to the center console and conceals the housing edges.

Trim must be removed to access the selector, factory procedures reference screws and clips for bezel removal.

Cosmetic trim that seals the lever opening in the console and retains the selector assembly while hiding internal components.

Attached to the selector cover or console trim, it is removed during selector replacement per service instructions.

Secures the selector assembly to the center console or vehicle structure and provides mechanical locating and grounding points.

Factory procedures reference specific screws and bracket fasteners and part numbers during removal and installation.

Limit ingress of liquids and debris into the selector electronics, protecting the PCB and sensors.

Service notes and repair accounts document that liquid intrusion can short the PCB and often requires selector replacement, cautioning against spills.