Audi A4 B8 Door Control Module Unit ECU Rear Left Right N/O/S 8T0959795H

Audi A4 B8 Right Left Rear Door Module is an original component from the electronic control modules group, designed for the right or left rear door. It ensures stable communication with the vehicle's electrical system, supporting the proper functioning of door equipment and integration with other comfort systems.

Specifications and technical data

• SKU: 8T0959795H
• Mark: Audi
• Condition: Used
• OEM Part Number: 8T0959795H
• Substitutable numbers: 8T0959795H, 8T0 959 795 H
• Location on the vehicle: Rear, Right, Left
• Category: ECUs & Computer Modules

Door Module Purpose and Function

The presented module is dedicated for installation in the rear doors, on both the driver's and passenger's sides. As part of the control system, it is responsible for processing signals from the door's electrical system and transmitting them to the vehicle's main controllers. This enables the correct operation of components located in the doors and their seamless cooperation with the rest of the car's electronics.

The vehicle placement is factory-designed for the rear axle, which simplifies part selection for a specific mounting position. Using an original module ensures compatibility with the factory electrical architecture and reduces the risk of communication problems within the vehicle's bus system.

Benefits of Using an Original Audi Module

The module belongs to the Electronic Control Modules and Controllers group, meaning it has been designed for precise cooperation with the vehicle's systems. In practice, this translates to:

• maintaining factory operating parameters of the door's electrical system,
• consistency with the vehicle's software and configuration,
• reduced risk of communication errors in the controller network.

As a part originating from the Audi brand, the module is structurally matched to the wiring harnesses and mounting points intended for the doors, which simplifies installation and reduces the need for system modifications.

Technical Characteristics and Installation

The module is designed for operation in the rear of the vehicle, with the possibility of installation on the right or left side. This solution simplifies part selection when replacing a controller in one of the rear doors. The component works with the factory electrical system, so during installation, it is recommended to:

• maintain the order of disconnecting and connecting connectors according to the service procedure,
• verify compatibility by OEM number or interchangeable numbers,
• optionally check the module's configuration after installation using an appropriate diagnostic tester.

Proper selection based on the vehicle's equipment version helps avoid communication issues between controllers and ensures the correct functioning of features assigned to the rear doors.

Product Condition and Practical Application

The offered module is a used item, which in the case of automotive electronics often represents a sensible compromise between cost and functionality. Such parts, sourced from dismantling, allow for restoring the door control system's functionality without the need to invest in a new component, while maintaining the original manufacturer's specifications.

Before purchasing, it is advisable to consult the guide on selecting used controllers and sensors – it thoroughly discusses compatibility, markings, and installation procedures: check how to safely select a used electronic module for your car.

Assistance with Selection and Integration with Other Systems

Selecting the correct door module for a specific Audi A4 B8 version should take into account the manufacturer's markings and the vehicle's equipment configuration. In practice, OEM numbers and interchangeable numbers are most often used to confirm full part compatibility. If in doubt, it is helpful to compare the existing controller with the offered item in terms of connectors, housing, and intended side of the vehicle.

For users who want to explore the topic of used automotive electronics more broadly, we have prepared a practical guide: learn the principles of selecting and installing used ECU modules and other controllers. This will make it easier to plan the door module replacement and ensure proper integration with the rest of the electrical system.