Audi A8L 4H Rear Door Module Control Unit Left Right N/O/S 4H0959795D

Audi A8L 4H Rear Door Module Control Unit Left Right is a specialized component from the Electronic control modules and controllers category, designed to manage rear door functions on both the left and right sides of Audi vehicles. It is responsible for the precise control of electrical systems within the doors, ensuring consistent operation of comfort features and communication with other vehicle systems.

Specifications and technical data

• SKU: 4H0959795D
• Mark: Audi
• Condition: Used
• OEM Part Number: 4H0959795D
• Substitutable numbers: 4H0959795D, 4H0 959 795 D
• Location on the vehicle: Rear, Right, Left
• Category: ECUs & Computer Modules

Purpose and function of the module

The presented control unit is dedicated to installation in the rear part of the vehicle, on the left or right side, where it manages the operation of electrical components in the doors. As a part of the comfort system, it is responsible for proper cooperation with the vehicle's electrical installation, data bus communication, and the execution of programmed door functions.

Thanks to a design consistent with Audi factory solutions, the module works with the original wiring harness and other body control units, which promotes stable operation of the entire system.

Benefits of using an original Audi module

Using an original module from the Electronic control modules and controllers category allows for maintaining the consistency of the vehicle's electronics and reduces the risk of communication issues between controllers. In practice, this translates into:

• maintaining the factory logic of comfort systems in the rear doors,
• better compatibility with the existing electrical installation,
• reduced risk of diagnostic errors resulting from hardware or software incompatibility.

The component comes from an Audi vehicle, which facilitates matching the electrical architecture used in the A8L 4H generation model.

Installation and operational characteristics

The module is designed to operate in the rear part of the body, on the right or left side, which makes it easy to select the appropriate mounting location in the vehicle. As a door controller, it works with the electrical installation, locks, switches, and other door equipment, according to the configuration of the specific vehicle.

Before installation, it is recommended to verify compatibility by part number and vehicle configuration to ensure proper cooperation with other modules. If necessary, after installation, adaptation or coding can be performed in accordance with Audi service procedures.

Product condition and practical application

The offered controller is a pre-owned component, which allows for an economical repair of the rear door electrical system while maintaining the manufacturer's original specifications. This solution is particularly beneficial in the event of a single module failure, when the goal is to reduce costs while maintaining system consistency.

The module will work well both as a replacement for a damaged controller and as a component used during the staged restoration of the vehicle's electrical installation after body and paint repairs.

More solutions from this group and technical knowledge

If you are planning a comprehensive repair or upgrade of the body electrical zone in your Audi and need other components from the same group, such as comfort controllers, door modules, or lighting management units, check out the available parts in the Audi electronic control modules and controllers category.

To better plan the selection of a used controller, understand compatibility principles, and learn how to verify parts by part numbers and hardware markings, it is worth using our practical guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?.