Audi A3 8Y Q3 F3 Rear Door Lock Latch Mechanism Actuator Left N/S 5TA839015N

Visual condition of the part

The product shows signs of use visible in the photos.

Audi A3 8Y Q3 F3 Rear Door Lock Latch Mechanism Actuator Left N/S is a precision locking mechanism designed for installation on the rear passenger side. This component from the Locks and Latches category is responsible for secure door closure, proper interaction with the actuator, and stable operation of the central locking system in modern Audi models.

Specifications and technical data

• SKU: 5TA839015N
• Mark: Audi
• Condition: Used
• OEM Part Number: 5TA839015N
• Substitutable numbers: 5TA839015N, 5TA 839 015 N, 5TA839015T, 5TA 839 015 T
• Location on the vehicle: Rear, Left
• Category: Exterior Locks & Lock Hardware

Purpose and function in the vehicle

The presented lock is dedicated to the rear left side of the body, ensuring a proper fit to the door structure and guides in Audi A3 (8Y generation) and Audi Q3 (F3 generation) models. The mechanism combines the function of a classic latch with a built-in actuator, allowing it to work with the central locking system and comfort electronics, enabling convenient door opening and closing via remote control or the interior cabin button.

Proper positioning of the lock relative to the pillar and hinges limits door play, reduces unwanted vibrations, and contributes to acoustic tightness and protection against external factors. This is particularly important in modern bodies, where the precision of component fitment has a direct impact on driving comfort.

Mechanism construction and user benefits

The mechanism combines a mechanical part with an electric drive, creating a compact module mounted inside the door. The applied design ensures:

• stable locking of the door leaf with every closure,
• smooth cooperation with internal and external door handle linkages,
• consistent operation with the central locking and comfort system,
• appropriate response to signals from the remote control and inside the vehicle.

Thanks to its factory origin from the Audi OE group, the lock maintains the correct mounting geometry, which facilitates installation and minimizes the risk of improper alignment relative to the door panel and the striker on the pillar.

Condition, fitment, and installation

The item is used, which allows you to combine the high quality of an original component with an attractive price compared to a new part. This is a practical solution for post-accident repairs, replacing a damaged lock after a collision, or failure of the central locking actuator.

For the correct selection of the lock for a specific Audi vehicle, it is recommended to verify compatibility by OEM number or interchangeable numbers based on service documentation or the manufacturer's catalog. This approach reduces the risk of purchasing the wrong variant and speeds up the installation process at a service center or independent workshop.

Application in service practice

Replacing the rear left door lock is a typical service operation performed in the case of:

• lack of door response to central locking commands,
• problems with opening from the inside or outside,
• mechanical damage after a side collision,
• irregular actuator operation (e.g., only in low or high temperatures).

Using an original mechanism from the Audi group allows for maintaining consistent operation with other locks in the vehicle, which is essential for the proper functioning of the comfort system and any safety features associated with door locking.

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

Additional practical tips regarding the selection and installation of used modules and electrical components in a car are provided by the Global Parts guide – you can find it in the article Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?, which discusses, among other things, compatibility issues, identification by numbers, and good installation practices.