Mercedes Vito Viano W639 Rear Additional Stoplamp Third Brake Lamp A6398200056

Mercedes Vito Viano W639 Rear Additional Stoplamp Third Brake Lamp is an original component from the Main and central brake lights group, designed for installation in the rear part of the vehicle body. It provides clear, highly visible braking signaling, which improves driving safety and signal readability for drivers behind you. This is a practical solution for users who want to restore full functionality to the lighting system in their Mercedes.

Specifications and technical data

• SKU: A6398200056
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6398200056
• Substitutable numbers: A6398200056, A 639 820 00 56
• Location on the vehicle: Rear
• Category: Centre & Third Brake Light Assemblies

Purpose and function of the third brake light

The presented brake lamp serves as an additional, elevated source of braking light in the rear of the vehicle. Its placement on the rear of the car improves the visibility of the braking signal, especially in heavy city traffic and during limited visibility conditions. Thanks to this, drivers behind a Mercedes Vito or Viano react faster to speed changes, which reduces the risk of rear-end collisions.

Compatibility and fit for Mercedes Vito / Viano W639

The lamp has been designed specifically for the Mercedes Vito and Viano W639 generation models, which translates into a proper fit for factory mounting points. This means:

• correct alignment with the rear bodywork,
• preservation of the vehicle's original styling line,
• possibility of installation without interfering with the body structure.

Thanks to this, this component works well both for standard replacement of a damaged lamp and for restoring the full efficiency of the lighting system after body and paint repairs.

Technical and functional characteristics

As a part from the Main and central brake lights group, the lamp has been constructed for stable operation under the daily operating conditions of a van or passenger-van vehicle. The design intended for installation in the rear zone of the body ensures proper light diffusion and a clear braking signal for other road users.

The item comes from a used vehicle, which is a beneficial solution for users looking for original components at a reasonable price. A used brake lamp allows you to maintain consistency with the factory lighting system, without the need to use replacements with uncertain parameters.

Practical application and benefits of installation

Replacing the third brake light in a Mercedes Vito or Viano is particularly important when:

• the original lamp has suffered mechanical damage or lens abrasion,
• there are problems with the visibility of the braking signal,
• the vehicle has undergone rear body repair and it is necessary to replace a missing element.

Installing a functional brake lamp in the rear of the vehicle improves safety while allowing you to maintain compliance with external lighting regulations. This is especially important in commercial vehicles that cover high mileages and often operate in city traffic.

Expanding the lighting system in Mercedes

If you are planning a comprehensive repair or upgrade of the rear lighting zone in your Mercedes and need other elements from the same group, such as additional brake lamps, central brake lights, or other signaling modules, check the available parts in the Main and central brake lights Mercedes category.

For users who are simultaneously servicing the braking system and want to consciously choose used components, a guide describing the principles of safely selecting elements such as discs, calipers, or ABS may be helpful – you can find it in the article Second-hand braking system: how to safely choose discs, calipers, and ABS?.