BMW F11 F31 G21 G31 Rear Window Switch Trunk Lid Boot Control Button 7944975

BMW F11 F31 G21 G31 Rear Window Switch Trunk Lid Boot Control Button is an original component from the Switches, control elements and ignition locks group, designed for installation in the rear part of the vehicle body. This specialized button allows for convenient control of opening and closing the trunk lid, ensuring consistent operation with the factory BMW electrical system. By maintaining the factory design, it serves as a functional service solution for repairs to the trunk opening system.

Specifications and technical data

• SKU: 7944975
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7944975
• Substitutable numbers: 7944975, 61317944975, 2728726, 61312728726
• Location on the vehicle: Rear
• Category: Switches & Controls

Purpose and function in the vehicle

The trunk lid switch mounted at the rear of the vehicle is responsible for the electrical release of the trunk lock in BMW F11, F31, G21, and G31 series models. The component works with the body wiring, comfort module, and trunk lock, enabling:

• activation of the trunk opening mechanism upon pressing the button,
• maintenance of convenient cargo space operation,
• preservation of the vehicle's factory ergonomics.

Thanks to its dedicated placement in the rear zone of the body, the switch is matched to the original mounting points and electrical harness, which facilitates efficient service.

Construction and fitment for BMW

The component belongs to the Switches, control elements and ignition locks group, which means it has been designed as an integral part of the BMW body control system. The switch construction is prepared for compatibility with factory connectors, and the housing is adapted for mounting in the rear part of the lid or bumper (depending on the specific model configuration).

Its original BMW origin helps maintain electrical and mechanical compatibility with the vehicle, minimizing the risk of fitment issues or leaks in the mounting area.

Service application and benefits of installation

The trunk lid button switch is particularly useful in situations where the existing component has suffered mechanical damage, operational wear, or contact corrosion. Replacing it with an original component allows you to:

• restore the proper operation of the trunk opening system,
• maintain the convenience of daily trunk use,
• keep consistency with the factory body control system.

The used nature of the part makes it a cost-effective solution while maintaining the manufacturer's original specifications. It is a practical option for repairing vehicles that are used intensively or in fleets.

Vehicle placement and installation aspects

The button is intended for installation in the rear part of the vehicle, in the immediate area of the trunk lid. This placement ensures:

• easy access for the user during loading and unloading,
• proper routing of the electrical harness within the rear part of the body,
• preservation of the factory aesthetics and ergonomics of trunk operation.

During installation, it is recommended to pay attention to the condition of the electrical connectors and seals in the lid area to ensure stable operation of the switch in varying weather conditions.

Complementary BMW control elements

If you are planning a comprehensive repair or upgrade of the body control zone in your BMW and need other elements from the same group, such as buttons, switches, or control modules, check out the available parts in the BMW Switches, control elements and ignition locks category.

Used premium parts and cost optimization

Choosing original, used control elements is often a reasonable compromise between quality and budget, especially in the premium brand segment. If you are interested in the broader context of using used components in high-end cars, it is worth reading an article describing the advantages of original dismantled components for Mercedes-Benz: Used parts for Mercedes – original dismantled components. This allows for a better understanding of how to consciously select used elements to maintain a high standard of vehicle operation.