Door Module Audi A4 B8 A6 C6 Rear Unit Control ECU Left N/S 4F0959795N

Door Module Audi A4 B8 A6 C6 Rear Unit Control ECU Left N/S is an original component from the Cables, harnesses and connectors group, designed to control the electrical systems of the rear left door in Audi vehicles. This specialized control unit ensures proper communication between the vehicle's electrical system and the components located in the door, supporting stable and safe operation of comfort systems.

Specifications and technical data

• SKU: 4F0959795N
• Mark: Audi
• Condition: Used
• OEM Part Number: 4F0959795N
• Substitutable numbers: 4F0959795N, 4F0 959 795 N
• Location on the vehicle: Rear, Left
• Category: Wiring Harnesses, Cables & Connectors

Purpose and function of the module

The presented control unit is dedicated for installation in the rear left door area, where it is responsible for managing electrical signals between the vehicle's wiring and the elements located in the door. As part of the body system, it works with the wiring harness and connectors, enabling the correct operation of comfort components and communication with the vehicle's central control units.

The location on the vehicle has been precisely defined, which facilitates the selection of the correct part and reduces the risk of errors when ordering. Thanks to this, the module can be used both for standard replacement of a damaged controller and for repairs to the electrical installation within the door.

Construction and integration with the electrical system

As an element from the Cables, harnesses and connectors category, the module has been designed to work with factory connectors and wiring harnesses used in Audi models. The design of the controller provides appropriate sockets and connection points, which allows for secure seating in the installation and reduces the risk of contact looseness.

This solution supports:

• stable signal transmission between the door and the rest of the vehicle,
• proper cooperation with the existing wiring harness,
• maintenance of the factory standard of electrical connections.

By maintaining the original connection architecture, the module can be installed in place of the factory controller without the need for installation modifications.

Benefits of using an original Audi module

Using a control unit dedicated to specific Audi models allows for maintaining the consistency of the vehicle's electrical system. Proper matching to the model platform reduces the risk of communication errors and also facilitates diagnostics in the event of any future faults.

The main advantages include:

• compatibility with the factory installation without the need for harness modifications,
• preservation of the original operating logic of comfort systems in the door,
• possibility of using standard service and diagnostic procedures.

The product in used condition is a reasonable cost-effective solution while maintaining the manufacturer's original specifications.

Application in service practice

The rear left door control unit will prove useful both in professional service centers and in workshops specializing in the Audi brand. It can be used for repairs after collisions, damage to the door installation, or when replacing a faulty module responsible for communication in this area of the body.

In service practice, it is important to match the part to the specific model and equipment version – using an original module from the same construction group facilitates maintaining full functionality of electrical systems and reduces the time required for installation and testing.

Expansion of assortment and technical knowledge

If you are planning a comprehensive repair or modernization of the door zone and electrical system in your Audi and need other elements from the same group, such as door harnesses, connectors, or control modules, check the available parts in the Audi cables, harnesses and connectors category.

If you want to better understand how to effectively select original used components for popular models, our guide may be helpful: The best used car parts – a guide to the most frequently chosen original parts for popular car makes and models.