Audi A3 S3 RS3 8V Remote Key Fob Opener Lock 3 Button 434 Mhz 8V0837220D

Used key – requires programming

The key requires programming (coding) by a specialist to be fully functional. Audi A3 S3 RS3 8V Remote Key Fob Opener Lock 3 Button 434 Mhz is an original component from the Electronic control modules and controllers group, designed for remote operation of the central locking and comfort systems in selected Audi models. The used remote provides factory-standard electronic logic, maintaining the brand's characteristic precision of response and consistency with the vehicle's installation.

Specifications and technical data

• SKU: 8V0837220D
• Mark: Audi
• Condition: Used
• OEM Part Number: 8V0837220D
• Substitutable numbers: 8V0837220D, 8V0 837 220 D
• Part type: Central Timing Module
• Category: ECUs & Computer Modules

Function and application of the Audi remote key

The presented remote key operates on the 434 MHz band, which is standard for many Audi models and allows for stable, predictable communication with the vehicle. Three buttons enable convenient control of basic functions – locking, unlocking, and an additional function assigned by the manufacturer for a given model. Thanks to this, the driver maintains full integration with the factory comfort system, without the need for universal solutions.

Electronics and integration with the vehicle system

As an element from the Electronic control modules and controllers category, the remote works with the central locking system and the appropriate comfort controller in the car. A properly selected key:

• ensures communication protocol compatibility with Audi electronics,
• enables correct coding in the vehicle using appropriate diagnostic tools,
• maintains operational consistency with the existing electrical installation. By maintaining the original electronic architecture, the response to the signal from the remote is predictable, and cooperation with control modules proceeds according to the manufacturer's specifications.

Benefits of using an original Audi remote

Using an original remote key in an Audi A3, S3, or RS3 8V series allows you to maintain the consistency of the solutions used in the vehicle. The most important advantages include:

• Factory compatibility – the remote is designed for a specific platform, which minimizes the risk of communication problems with control modules.
• Stable operation in the 434 MHz band – optimized radio transmission frequency translates into repeatable performance under typical operating conditions.
• Consistency with security systems – maintaining the original electronics facilitates the correct assignment of the key to the immobilizer and other vehicle security features (after performing the appropriate service procedure). This solution is particularly beneficial for users who want to keep the car's character in line with the manufacturer's design, without interfering with the electrical installation.

Product condition and installation aspects

The key is in used condition, which means it comes from a previously operated vehicle but retains the functionality characteristic of original Audi components. Before installation, it is recommended to verify compatibility with the specific equipment version and prepare for adaptation in the vehicle (coding, assignment to the security system) at a specialized service center or with an experienced automotive electrician.

Selecting a remote by part numbers and brand

For proper key selection, it is worth using the manufacturer's markings as well as information about the vehicle model and year. In this case, we are dealing with an original component from the Audi brand, which makes it easier to match to a specific car configuration. If necessary, you can use the OEM part number and available interchangeable numbers to verify compatibility with your vehicle. If you are planning a comprehensive repair or upgrade of the electronic zone in your Audi and need other elements from the same group, such as comfort controllers, body modules, or other systems managing vehicle functions, check the available parts in the Audi electronic control modules and controllers category. To better understand how original components affect the driving character and perception of the car, it is worth reading an article describing the role of factory elements in maintaining the brand's identity – check out the material Audi and emotions in their purest form. How do used parts help maintain the brand's DNA?.