BMW E81 E82 E87 E90 E91 Radio Remote Alarm Key Fob Button 868 MHz 6986581

Used key – requires programming

The key requires programming (coding) by a specialist to be fully functional.

BMW E81 E82 E87 E90 E91 Radio Remote Alarm Key Fob Button is an original component from the Switches, controls and ignition locks group, designed for BMW vehicles from selected E-series. Operating at a frequency of 868 MHz, the key fob works with the factory central locking remote control system and immobilizer, serving as a base for repairing or restoring the functions of an existing set.

Specifications and technical data

• SKU: 6986581
• Mark: BMW (Genuine OE)
• Condition: For parts or not working
• OEM Part Number: 6986581
• Substitutable numbers: 6986581, 66126986581, 9268488, 66129268488, 6945836, 66126945836, 6954814, 66126954814, 2296934, 66122296934
• Category: Switches & Controls

Purpose and function of the BMW key fob

The presented key fob is a component of the access and ignition control system in BMW E81, E82, E87, E90, and E91 models. As a part of the Switches, controls and ignition locks family, it works with the steering column, ignition switch, and comfort modules, being responsible for:

• remote central locking control,
• engine start authorization via the immobilizer,
• support for comfort functions depending on the vehicle configuration.

Thanks to the preservation of the original housing design and electronics, the key fob can be used as a donor for components or as a base for specialized service and programming work.

Technical aspect and compatibility

The key fob operates at a frequency of 868 MHz, used in European versions of BMW, which is important when matching it to a specific car and body modules. In practice, this means it can be integrated with the vehicle's factory radio system after performing appropriate coding or adaptation procedures at a specialized service center.

The presence of a dedicated OEM part number and associated replacement numbers facilitates verification of compatibility with a specific car configuration in BMW catalogs or service software. This is especially important when working with different model years and equipment versions within the same model series.

Application in repairs and diagnostics

Due to the condition defined as for parts or not working, the key fob is intended primarily for:

• obtaining the housing or selected mechanical elements,
• analyzing electronics in diagnostic processes,
• training purposes in workshops dealing with BMW electronics,
• retrofitting and projects where an original carrier is needed for further processing.

Such an element allows for cost reduction in more complex repairs of the keyless access system or the classic key-ignition system, especially when specific components are needed rather than a complete, fully functional set.

Control group – BMW switches, controls and ignition locks

When working on the ignition and vehicle access system, it is often necessary to handle other components from the same group in parallel – steering columns, ignition locks, comfort modules, or additional switches. If you are planning a comprehensive repair or upgrade of the control and ignition area in your BMW and need other elements from the same group, such as ignition locks, control modules, or steering column switches, check the available parts in the BMW switches, controls and ignition locks category.

Knowledge and retrofitting – how to effectively use used BMW components

When working with key fobs, comfort modules, and body electronics, it is worth using reliable sources of knowledge about retrofitting and adaptations. For users and workshops planning to expand equipment or make modifications in BMW vehicles, a guide on retrofitting and using components from higher equipment versions will be helpful – you can find it in the article Retrofitting in VAG and BMW group cars: How to cheaply equip a car using used parts from higher versions?.

If you are also interested in the broader context of using used, original premium components in vehicle service, it is worth reading the material describing the advantages of dismantled parts for the Mercedes-Benz brand – details can be found in the article Used parts for Mercedes – original dismantled parts.

Summary

BMW E81 E82 E87 E90 E91 Radio Remote Alarm Key Fob Button is an original element from the control and ignition lock group, intended for use as a parts donor or a base for specialized work on BMW electronics. Thanks to its compliance with the European radio frequency and its connection to a specific family of models, it is a valuable component for workshops, automotive electricians, and those involved in professional retrofitting and diagnostics of comfort systems in BMW vehicles.