Trunk Lid Switch BMW G20 G30 G31 Button Opener Open Tailgate Boot 9327029

Trunk Lid Switch BMW G20 G30 G31 Button Opener Open Tailgate Boot is an original component from the Switches, control elements and ignition switches group, designed to control the tailgate in selected BMW 3 and 5 series models. The used OEM component ensures factory integration with the vehicle's electrical system and consistent operation with other comfort systems. It is a practical solution for users who want to restore full functionality of the tailgate without interfering with the car's original architecture.

Specifications and technical data

• SKU: 9327029
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9327029
• Substitutable numbers: 9327029, 61319327029, KD
• Category: Switches & Controls

Function and application of the tailgate opener button

The tailgate opener button in the BMW G20, G30, and G31 series is responsible for the electrical release of the tailgate lock, working in conjunction with comfort modules and the central locking system. This component is mounted in the rear area of the vehicle and allows for convenient, controlled opening of the trunk from the outside, without the need to use a key or remote control.

Thanks to its factory design, the button maintains compatibility with the original wiring, connectors, and control logic used by the manufacturer. This helps avoid compatibility issues that often arise when using aftermarket replacements with uncertain electrical parameters.

Benefits of using an original BMW switch

Using an original switch from the Switches, control elements and ignition switches group in a BMW offers a number of practical benefits:

• maintaining the factory operating characteristics of the tailgate,
• proper cooperation with the comfort access system and central locking,
• consistent appearance with other body and trim elements,
• no need for electrical system modifications.

A used OEM component is a sensible choice for drivers who want to maintain high build quality while optimizing repair costs. Factory fitment reduces the risk of leaks, mounting play, or improper button operation during daily use.

Technical and assembly aspects

The tailgate opener button is part of the body control system, so its proper operation is important for both user comfort and the security of the transported cargo. This component works with the tailgate lock, wiring harness, and relevant control modules, which requires maintaining structural compatibility with the specific BMW generation.

In practice, installation usually involves removing the tailgate trim, disconnecting the electrical connector, and replacing the button with a functional unit. Because it is an original part, the correct mounting points and housing geometry are preserved, which facilitates installation and minimizes the time required for service.

Why choose a used OEM component

Choosing a used, original switch for a BMW is a compromise between quality and cost. These types of components come from the dismantling of vehicles where the full functionality of the electrical systems was maintained, allowing for their continued use in another car. Savings while maintaining the manufacturer's standard are particularly important in the case of premium brands, where new parts can be significantly more expensive.

If you are interested in the broader context of using used components in premium cars, it is worth reading an article describing the advantages of original parts from dismantling for the Mercedes-Benz brand: used parts for Mercedes – original components from dismantling. This will help you better understand why the use of used OEM components is often technically justified in BMWs as well.

Expanding the control system in a BMW

The tailgate opener button is part of a wider body control system, including various switches and control elements inside and outside the vehicle. 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 the available parts in the BMW Switches, control elements and ignition switches category.