BMW E90 320si Engine Start Stop Switch Button Ignition Limited Edition 9111941

BMW E90 320si Engine Start Stop Switch Button Ignition Limited Edition is an original component from the Switches, control elements and ignition locks category, designed to operate the engine start and stop function in BMW 3 Series E90 320si models. This used OEM start/stop switch ensures proper integration with the vehicle's factory electronics, maintaining consistency with the wiring and interior ergonomics.

Specifications and technical data

• SKU: 9111941
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9111941
• Substitutable numbers: 61319111941, 9111941
• Category: Switches & Controls

Function and application of the BMW E90 320si Start Stop button

The presented switch is responsible for controlling the engine start and stop procedure in the BMW E90 320si model, replacing the classic key ignition. The component works with the vehicle's factory electronic system, allowing for convenient ignition and engine activation once the key is recognized in the vehicle. Thanks to the OEM design, full compatibility with the wiring harness and control modules intended for this version is maintained.

Construction and integration with the control system

The start/stop button is part of the control assembly in the cabin, mounted in the console as intended by the manufacturer. The applied design ensures:

• precise operation of the switching mechanism,
• stable connection with the vehicle's electrical system,
• consistent appearance with other elements of the BMW cockpit.

Thanks to the factory design, the component works with safety systems and vehicle control units, which is essential for handling ignition and engine shutdown functions.

Benefits of using an original BMW switch

Using an original start/stop switch in the BMW E90 320si allows for maintaining the correct operating parameters of the control system and avoiding fitment issues. The most important advantages include:

• factory fitment to the installation – no need for wiring or mounting modifications,
• preservation of the manufacturer-intended button logic,
• visual consistency with the dashboard and other control elements.

The used OEM component is a good solution for workshops and users who want to restore full functionality of the engine starting system while maintaining the original specification.

Condition and selection of parts for a specific vehicle

The offered switch is in used condition, meaning it comes from disassembly and has been verified for suitability for further use. In the case of control elements, it is important to match the specific equipment version and vehicle model year, so it is worth comparing part numbers and vehicle configuration before purchasing to ensure proper cooperation with the electronics.

When selecting used control components, specialized guides can be helpful. Detailed tips on the safe purchase of aftermarket parts can be found in the article Safe purchase of used car parts online – a step-by-step guide, which discusses, among other things, selection by OEM numbers and purchasing practices in online stores.

Related BMW control elements – expansion and service

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

When performing service work related to safety and control systems, it is also worth familiarizing yourself with the principles of selecting used components, described in the blog material Second-hand braking system: how to safely select discs, calipers, and ABS?, which shows a universal approach to assessing the condition of used parts and verifying the seller.