BMW F20 F21 F22 F30 F31 M Sport Radio Remote Alarm Key Button 868 MHz 8723579

BMW F20 F21 F22 F30 F31 M Sport Radio Remote Alarm Key Button is an original component from the Switches, control elements and ignition switches group, designed for advanced vehicle function control. The smart key design works with an 868 MHz radio system, ensuring convenient operation of the central locking and ignition system in BMW F-series models with the M Sport package. This solution is dedicated to users looking for parts compatible with the factory BMW electronics architecture.

Specifications and technical data

• SKU: 8723579-1
• Mark: BMW (Genuine OE)
• Condition: For parts or not working
• OEM Part Number: 8723579
• Substitutable numbers: 8723579, 66128723579, 8053870, 66128053870, 2230337, 66122230337
• Category: Switches & Controls

Purpose and function in the vehicle

The presented smart key is designed to work with the comfort access and radio control system in selected BMW F-series models with the M Sport line. As an element of the Switches, control elements and ignition switches category, it is responsible for wireless communication with body modules, door lock operation, and integration with the ignition and engine start system. By operating in the 868 MHz band, the key is matched to the European radio transmission standards used in original BMW systems.

Construction and integration with BMW electronics

The smart key combines radio control functions and vehicle identification in the immobilizer system in one housing. The internal electronics work with factory comfort and ignition modules, which allows for maintaining consistency with the car's original software. The use of a dedicated radio circuit enables stable communication with the vehicle, and the design intended for the M Sport version ensures stylistic consistency with the equipment line of these models.

Service application and part selection

Due to the designation as For parts or not working, the key is intended primarily as a donor of components or a base for specialized service work, such as:

• obtaining the housing or selected electronic components,
• diagnostic analysis in workshops dealing with BMW electronics,
• training tests for key programming and coding in a service environment.

Before purchasing, it is recommended to verify compatibility with the specific BMW model and the configuration of the comfort and ignition system in order to properly use the element in the repair or regeneration process.

Benefits of using an original BMW smart key

Choosing an original BMW M Sport series remote key allows you to maintain consistency with the vehicle's factory architecture. For workshops and automotive electronics specialists, this means:

• reliable structural compatibility with BMW control modules,
• the possibility of using parts in key regeneration or reconstruction processes,
• better predictability of behavior compared to universal replacements.

Thanks to this, the element can be a valuable addition to service facilities when working with BMW F21, F22, F30, and F31 vehicles equipped with M Sport systems.

Related BMW control elements

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

Safety and selection of used electronic components

When working with used components of control and safety systems, it is worth following procedures similar to those that apply when selecting brake system elements – precise identification, condition check, and verification of compatibility with the specific vehicle version. An extended discussion of the principles of safe selection of used subassemblies can be found in the article Second-hand brake system: how to safely choose discs, calipers, and ABS?, which may also be helpful as a general checklist when purchasing automotive electronics.