Audi A4 B8 Vehicle Radio Remote Control Key Fob Button Switch 8K0837220D

Used key – requires programming

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

Audi A4 B8 Vehicle Radio Remote Control Key Fob Button Switch is an original component from the Switches, control elements and ignition switches group, designed for the ignition and remote control system in Audi vehicles. The product is offered in for parts or not working condition, making it an excellent donor for the housing, electronics, or buttons during specialized repairs and key fob refurbishment.

Specifications and technical data

• SKU: 8K0837220D
• Mark: Audi
• Condition: For parts or not working
• OEM Part Number: 8K0837220D
• Substitutable numbers: 8K0837220D, 8K0 837 220 D
• Category: Switches & Controls

Purpose and function of the key fob

The presented remote control key is a component of the central locking and ignition system in the Audi A4 B8 generation. Its design combines the function of a mechanical key and a remote control in one housing, allowing for convenient vehicle operation from a single, compact module.

Due to the condition specified as for parts or not working, the key fob is particularly useful for automotive electronics technicians, locksmiths, or workshops specializing in key programming and repair, where it can be used as a source of compatible components.

Service application and potential uses

The key fob can serve as:

• a housing donor when replacing a worn or damaged key body,
• a base for obtaining buttons and mechanical components,
• training material for practicing diagnostics and repair of key fob electronics,
• a source of parts in refurbishment processes carried out by specialized services.

For workshops dealing with automotive electronics, such an item is valuable as a source of original sub-assemblies, which often feature better fitment than low-budget replacements.

Benefits of choosing an original Audi component

Choosing a key fob from the Audi brand means access to a component designed for a specific vehicle platform. Original elements from this group usually ensure:

• consistent fitment to the ignition slot and lock mechanism,
• compatibility with the factory vehicle electronics after proper adaptation,
• the possibility of using parts in professional refurbishment processes.

For users and workshops prioritizing technically correct solutions, using original components from dismantling is often more predictable than installing random replacements.

Technical condition and installation recommendations

The product is offered in for parts or not working condition, which means it should not be treated as a ready-to-use, fully functional key fob for immediate use. It is recommended to be used only by individuals or workshops with the appropriate technical facilities for:

• verifying electronics and potential repair,
• transferring functional components to another housing,
• adaptation and programming in the vehicle using the correct diagnostic tools.

Self-installation without appropriate knowledge may result in a lack of communication with the vehicle or the need for additional service intervention.

Expanding the control system in an Audi

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

Knowledge about used parts and cost optimization

When planning repairs using parts from dismantling, it is worth knowing the specifics of original premium sub-assemblies and their behavior after reinstallation. A broader discussion on the advantages of using used OEM components in high-end cars can be found in the article Used parts for Mercedes – original parts from dismantling, which shows how to consciously approach the selection of such elements in other brands as well.