Start Stop Switch BMW F20 F21 F22 F30 F31 Engine Button 9250734

Visual condition of the part

The product shows signs of use visible in the photos.

Start Stop Switch BMW F20 F21 F22 F30 F31 Engine Button is a factory-original engine start button designed for selected BMW F-series models, ideal as a replacement for a worn or damaged component. Thanks to its original design from the Switches, control elements and ignition locks group, it ensures proper cooperation with the vehicle's electronics and maintains the factory functionality of the start/stop system. This is a practical solution for users who want to restore full efficiency to the engine starting system without interfering with the wiring.

Specifications and technical data

• SKU: 9250734-6
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9250734
• Substitutable numbers: 61319250734, 9250734, KD
• Category: Switches & Controls

Purpose and function in the engine control system

The start/stop button is responsible for initiating the engine start and stop procedure in BMW vehicles equipped with a keyless system. This component works with comfort modules and engine control units, transmitting a signal that the vehicle is ready to start once the key is detected inside. Using an original solution allows you to maintain:

• correct operation logic of the start/stop system,
• consistency of communication with on-board electronics,
• factory appearance and ergonomics of operation within the center console or dashboard.

Advantages of using an original BMW switch

Choosing an original BMW start/stop button from the Switches, control elements and ignition locks category minimizes the risk of compatibility issues that may occur when using aftermarket replacements of unknown origin. The component has been designed specifically to work with the electrical installation and network architecture of the F20, F21, F22, F30, and F31 models, which translates into:

• stable operation of the engine starting system,
• preservation of the original button operating characteristics (travel, resistance, response),
• aesthetic match to the other interior elements of the BMW.

As a result, there is no need to modify wiring harnesses, create adapters, or interfere with the vehicle's software during replacement, which is particularly important in modern designs with extensive electronics.

Installation and usage characteristics

The start/stop button is intended for installation in the factory location provided by the vehicle manufacturer. The plug-and-play design allows a technician or an experienced user to carry out the replacement in an orderly manner, following standard service procedures. In practice, this means:

• no need to modify the mounting socket,
• use of original electrical connectors,
• easy restoration of full functionality after replacing the damaged component.

As a used item, the button is a good choice for those looking for a cost-effective solution while maintaining the manufacturer's original specifications.

Why it is worth choosing original BMW switches

Original BMW switches are designed for long-term operation in demanding temperature and mechanical conditions inside the vehicle. Using a dedicated start/stop button reduces the risk of malfunctions such as lack of response to pressing, intermittent engine shutdown, or comfort system errors. This is particularly important in cars where the engine start and stop function is used multiple times every day.

Expanding the control system in a BMW

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

For drivers considering a wider use of used parts in premium class cars, including vehicles of other high-end brands, a guide describing the advantages of using original dismantled components may be helpful – more information can be found in the article Used parts for Mercedes – original dismantled parts.