Mercedes Vito Viano W639 Tailgate Boot Lock Latch Mechanism Rear A6397401235

Mercedes Vito Viano W639 Tailgate Boot Lock Latch Mechanism Rear is a factory-original component of the rear body locking system, designed for installation in Mercedes Vito W639 generation models. This original tailgate lock ensures proper latching, stable closure, and safe use of the cargo or passenger area.

Specifications and technical data

• SKU: A6397401535-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6397401535
• Substitutable numbers: A6397401535, A 639 740 15 35, A6397401235, A 639 740 12 35, KD
• Location on the vehicle: Rear
• Category: Interior Locks & Lock Hardware

Purpose and function of the tailgate lock

The tailgate lock in the Mercedes Vito W639 is responsible for the mechanical latching of the tailgate and works in conjunction with the internal opening and closing mechanism. A properly functioning lock:

• keeps the tailgate in a stable position while driving,
• prevents accidental opening during operation,
• supports the correct operation of the central locking system (if the vehicle is equipped with one),
• reduces the transmission of vibrations and noise from the rear of the vehicle.

Thanks to its precise fit to the Vito W639 design, this component works with factory hinges, actuators, and tailgate upholstery, which facilitates installation and subsequent adjustment.

Construction and placement on the vehicle

The presented lock belongs to the Internal locks and latches group, which means it is integrated into the internal structure of the tailgate and works with the factory striker on the vehicle body. Its placement in the rear zone of the vehicle helps protect the cargo and provides convenient access to the luggage compartment.

The design solution used by the manufacturer allows for:

• precise guidance of the latch during closing,
• secure locking of the tailgate once closed,
• consistent cooperation with cables, rods, or actuators operating the opening mechanism.

Benefits of using an original Mercedes lock

Choosing an original tailgate lock for the Mercedes Vito W639 primarily ensures a secure fit to the body and maintains the factory performance parameters of the locking system. This component has been designed specifically for the geometry of the rear of the vehicle, which means:

• it requires no modifications to mounts or adaptations,
• it maintains the correct closing line of the tailgate relative to the fenders and bumper,
• it reduces the risk of leaks and unwanted noises while driving.

The product is offered in used condition, which allows for an economical repair while maintaining the original build quality characteristic of the Mercedes brand.

Selection and technical compatibility

To correctly select a tailgate lock for a specific Vito W639 unit, it is worth paying attention to the manufacturer's markings and available interchangeable numbers. This model has an OEM part number and assigned reference numbers, which facilitates verification of compatibility with a specific body version and vehicle year.

Additionally, thanks to being assigned to the Mercedes brand, the component maintains consistency with the factory locking system and vehicle electronics, minimizing the risk of problems with installation or central locking operation.

Installation zone and practical tips

The lock is intended for installation in the rear of the vehicle, within the luggage compartment or tailgate area. When replacing, it is recommended to:

• check the condition of the striker on the body and the tailgate guides,
• verify the alignment of the tailgate (gaps, seal fitment),
• inspect the operation of rods, cables, and any actuators operating the mechanism.

This approach allows you to restore the proper operation of the entire rear locking system of the Mercedes Vito W639 in a single service operation.

If you are planning a comprehensive repair or upgrade of the rear body area in your Mercedes and need other components from the same group, such as door locks, sliding side door latches, or internal locking mechanisms, check the available parts in the Mercedes internal locks and latches category.

When selecting used locking components for commercial vehicles, it is worth knowing the basic principles of assessing their technical condition and the correct operation of the mechanisms – you can find more practical tips in the article Buying a used engine: 5 things you must check before installation, which discusses universal principles for the safe selection of components from the secondary market.