Mercedes-Benz M ML W163 Rear Additional Third Brake Light Lamp A1638200156

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes-Benz M ML W163 Rear Additional Third Brake Light Lamp is an original component from the Rear lights and brake lights group, designed specifically for precise illumination of the braking signal. The red lens and tailored placement in the rear part of the body ensure a clear signal for drivers behind you, supporting safe vehicle operation. This used OEM component is a sensible choice when servicing the factory lighting on a Mercedes W163, especially when you want to maintain the original design of the brake system.

Specifications and technical data

• SKU: A1638200156
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1638200156
• Substitutable numbers: A1638200156, A 163 820 01 56
• Location on the vehicle: Rear
• Color: Red
• Category: Rear Light Assemblies

Function and role of the third brake light

The third brake light in the Mercedes W163 performs an important signaling function, complementing the standard rear lamps. Positioned high in the rear of the vehicle, it improves the visibility of the braking signal in heavy traffic, during bad weather, and in situations where the lower lamps may be partially obscured. Thanks to the red color of the lens, the signal is unambiguous and easily recognizable by other road users.

Construction and body fitment

The offered third brake light is a component intended for installation in the rear body zone, with a design adapted to the factory mounting points in the Mercedes W163. The red lens has been designed to work with the factory optics and electrical installation, ensuring a consistent look and proper lighting characteristics. Using an original module allows you to maintain the vehicle's stylistic line and avoid fitment issues typical of aftermarket replacements with imprecise dimensions.

Benefits of using an original used component

Choosing a used third brake light for the Mercedes W163 is a solution that allows you to combine cost control with maintaining factory specifications. An original component from the same group as other Rear lights and brake lights facilitates service and diagnostics of the lighting system, as the original operating parameters and mounting method are preserved. This is particularly important for vehicles used intensively, where quick replacement without the need for installation modifications is essential.

Application in service practice

The third brake light in the Mercedes W163 should be replaced in situations where there are problems with braking signal visibility, lens damage, or intermittent operation. A used, original element allows you to restore the correct operation of the system without interfering with the electrical harness and without the risk of incorrect light dispersion. It is a good solution both for post-accident repairs and for standard lighting service when you want to maintain consistency with the remaining rear lamps.

Expanding lighting and drivetrain service

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 brake light modules, tail light assemblies, or additional signal lamps, check the available parts in the Mercedes Rear lights and brake lights category.

For users of Mercedes vehicles equipped with all-wheel drive who want to better understand the specifics of drivetrain service and the selection of used components, the article comparing different AWD systems may be helpful – xDrive, 4Matic, quattro or 4Motion – a comparison of AWD systems from BMW, Mercedes, Audi and VW.