Audi S8 V10 Qua Door Lock Actuator Mechanism Rear Left N/S 4E0839015AC

The Rear Left Door Lock Mechanism for Audi S8 V10 is an original part from the Locks and Latches group, designed for installation in the rear left door of the vehicle. It ensures precise locking, proper cooperation with the door handle and central locking system, as well as stable actuator operation in daily use. This solution is for users who want to restore full door functionality while maintaining the original Audi construction.

Specifications and technical data

• SKU: 4E0839015AC
• Mark: Audi
• Condition: Used
• OEM Part Number: 4E0839015AC
• Substitutable numbers: 4E0839015AC, 4E0 839 015 AC
• Location on the vehicle: Rear, Left
• Category: Exterior Locks & Lock Hardware

Purpose and Function in the Vehicle

The presented lock mechanism is designed to operate in the rear left door area, where it is responsible for the mechanical and electrical locking of the door leaf. The element integrates a set of pawls, levers, and an actuator that works with the central locking system and comfort system, enabling convenient opening and closing of the vehicle via remote control or an interior button.

Thanks to the original Audi design, proper mounting points, linkage geometry, and correct cooperation with the external and internal door handles are maintained, which reduces the risk of play, jamming, or improper door closing.

Construction and Fit for Audi S8 V10

The rear left door lock mechanism has been developed specifically for the body architecture of the Audi S8 V10, taking into account the door weight, wiring harness routing, and central locking system characteristics. The implemented design allows for:

• stable locking of the door leaf under various operating conditions,
• proper cooperation with factory linkages and handles,
• correct communication with the vehicle's electrical system.

Its original origin from the Audi range helps maintain consistency with other door components, such as guides, seals, or control modules, which is important for both user comfort and reducing unwanted noises during driving.

Benefits of Using an Original Lock Mechanism

Using a factory lock mechanism in the rear left door of the Audi S8 V10 allows for adherence to the manufacturer's specifications regarding safety and ergonomics. Key benefits include:

• secure door locking – essential for the safety of rear-seat passengers,
• consistency with the central locking system and comfort functions,
• preservation of the factory operating characteristics of the handles and lock cylinder,
• reduction of fitting problems typical of aftermarket parts with different geometry.

An element from the Locks and Latches group of this type is particularly important in premium vehicles, where quiet operation of mechanisms and repeatable, predictable performance with frequent use are expected.

Condition and Service Application

The rear left door lock mechanism for the Audi S8 V10 in the presented configuration is intended as a service part for replacing a damaged or worn lock in the rear left door area. It is suitable for both typical central locking malfunctions (no response, locking problems) and mechanical damage resulting from wear and tear.

Replacing it with an original part helps reduce diagnostic and fitting time, as the construction is compatible with factory mounting points and the manufacturer's intended routing for wiring harnesses and linkages.

If you are planning a comprehensive repair or upgrade of the door area in your Audi and need other parts from the same group, such as lock cylinders, latches, or central locking actuators, check the available parts in the Audi Locks and Latches category.

To better understand the importance of original components in locking and central locking systems and to make informed choices about used OEM parts, it is worth reading the guide: Quality and Safety Guarantee of OEM – Why Used Original Car Parts Are the Best Choice for Your Car?.