Audi Q7 4L Rear Door Lock Actuator Mechanism Latch Left N/S 3C4839015C

Audi Q7 4L Rear Door Lock Actuator Mechanism Latch Left N/S is a precision locking mechanism designed for the rear left side of the vehicle body. This component is responsible for securely closing the door, proper locking, and integration with the factory central locking system, which directly impacts the comfort and safety of the vehicle. Thanks to its design, which complies with the original Audi solutions standard, it is the right choice for repairing the locking system in this model.

Specifications and technical data

• SKU: 3C4839015C-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 3C4839015C
• Substitutable numbers: 3C4839015C, 3C4 839 015 C
• Location on the vehicle: Rear, Left
• Category: Exterior Locks & Lock Hardware

Purpose and function in the vehicle

The presented lock mechanism has been designed to operate in the rear left part of the Audi Q7 4L generation body. It is responsible for:

• mechanically locking the door once closed,
• stably maintaining the door in a closed position while driving,
• working with the central locking system and interior door controls,
• proper response to signals from the internal and external door handles.

By being tailored to the specific vehicle location, it eliminates the problem of doors not closing properly or opening accidentally, which is crucial both for passenger safety and for protecting the interior from external factors.

Mechanism construction and functional advantages

The lock mechanism belongs to the group of components known as Locks and latches, which are responsible for physically locking and releasing the door. Its construction utilizes a system of levers, pawls, and guides that work with the actuator and door cables. This solution ensures:

• repeatable, predictable operation with every opening and closing cycle,
• adequate rigidity of the connection between the door and the body once locked,
• compatibility with the factory comfort systems of the specific Audi unit.

As a component originating from the same design line as other door parts, the lock maintains proper installation tolerances, which facilitates its installation and subsequent adjustment.

Component condition and service application

The offered lock is a used part, which in practice means it has been removed from a vehicle and can be an attractive cost-effective alternative to a new component. This type of solution is often chosen for:

• post-accident repairs of the rear body section,
• mechanical damage to the lock caused by operational wear,
• problems with locking or unlocking a specific door.

Selecting an original mechanism from the same model group allows for maintaining consistency in the locking system's operation without the need for modifications to the installation or interference with the door structure.

Installation tips and fitment

Before installation, it is recommended to verify the part's compatibility with your Audi Q7 4L based on the vehicle's technical data and the manufacturer's specifications. A correctly selected rear left lock:

• allows for installation in factory mounting points,
• works with existing cables and handles,
• does not require software adaptation beyond standard service procedures (if applicable to the specific equipment).

Such fitment limits workshop labor time and reduces the risk of subsequent problems with door adjustment or central locking operation.

Expanding the locking system and additional information

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, cylinders, or actuators, check out the available parts in the Audi Locks and latches category.

For owners of older vehicles who want to consciously use dismantled components and better plan their vehicle's modernization, an article describing practical scenarios for refreshing cars from the 1998–2012 period may be helpful – more information can be found in the material Second life of a youngtimer – how used car parts rejuvenate cars from the 1998–2012 model years.