Audi A4 S4 8K A5 Q5 Rear Door Control Module Unit Left Right N/O/S 8K0959795D

Audi A4 S4 8K A5 Q5 Rear Door Control Module Unit Left Right is a component from the Electronic control modules and controllers group, designed to operate the functions of the rear doors on both the left and right sides. It is responsible for the precise control of electrical components within the doors, ensuring consistent operation of comfort and safety systems in Audi vehicles.

Specifications and technical data

• SKU: 8K0959795D
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0959795D
• Substitutable numbers: 8K0959795D, 8K0 959 795 D
• Location on the vehicle: Rear, Right, Left
• Part type: Door Control Unit
• Category: ECUs & Computer Modules

Purpose and function of the module

The presented rear door controller is dedicated to Audi vehicles from the A4, S4, A5, and Q5 families, where it acts as a local door electronics controller. The module manages the operation of components located in the rear doors on both the left and right sides, integrating them with the vehicle's main electrical system. Thanks to the use of specialized electronics, the module enables stable communication with other controllers in the vehicle, which translates into predictable operation of comfort systems. This type of solution is designed for a specific vehicle platform, which promotes proper fitment and reduces the risk of compatibility issues.

Vehicle placement and system integration

The module is designed for installation in the rear part of the vehicle, on both the right and left sides, in the immediate vicinity of the door wiring harnesses. This placement shortens the length of signal and power cables, which helps reduce interference and improves the reliability of the system. The component works with the factory Audi electrical system, which allows for the preservation of the original system architecture. In practice, this means the module can be used as a replacement for a faulty controller while maintaining the existing vehicle configuration, provided it is properly matched to the specific equipment version.

Performance characteristics and advantages

Choosing an original module from the Electronic control modules and controllers group allows you to maintain the consistency of the electronic system in the vehicle. The controller has been designed to work with the communication bus used in Audi, which facilitates diagnostics and potential adaptation using standard service tools. Key benefits of using this type of solution include:

• maintaining the factory logic of comfort systems in the rear doors,
• consistency with other body controllers,
• the ability to use the existing electrical harness without interfering with its construction,
• simplified diagnostics due to compatibility with Audi service systems. The product in a used condition can be a reasonable choice for repairs where it is important to combine functionality with cost control while maintaining the original electronic architecture of the vehicle.

Application in service practice

The rear door control module is used both for typical repairs following electronic failure and for replacements resulting from mechanical damage or flooding of the door harnesses. In many cases, it is a component whose functionality has a direct impact on the proper operation of features related to the rear part of the body. Due to the specifics of automotive electronics, it is recommended to verify compatibility with the specific vehicle equipment version before installation and to perform diagnostics after installation. This allows for confirming proper communication of the module with other controllers and avoiding irregularities in system operation.

System expansion and selection of other modules

If you are planning a comprehensive repair or upgrade of the body electronics area in your Audi and need other components from the same group, such as comfort controllers, door modules, or window controllers, check out the available parts in the Audi electronic control modules and controllers category. When selecting used controllers and comfort modules, it is worth paying attention to issues of compatibility, configuration, and build quality. Practical tips on choosing second-hand electronics, including controllers and body modules, can be found in the article: A second life for electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?