Mercedes W212 Third Brake Lamp Additional Light Rear Stoplamp A2128200156

Visual condition of the part 

The product shows signs of use visible in the photos. 

Mercedes W212 Third Brake Lamp Additional Light Rear Stoplamp is an original rear lighting component designed for installation in the upper part of the trunk lid. This used brake light module provides a clear braking signal, improving vehicle visibility for drivers behind you. Thanks to its factory-fit design for the W212 body, installation is precise and requires no modifications to the wiring.

Specifications and technical data

• SKU: A2128200156
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2128200156
• Substitutable numbers: A2128200156, A 212 820 01 56
• Location on the vehicle: Rear
• Color: Red
• Category: Centre & Third Brake Light Assemblies

Purpose and function of the third brake light

The third brake light in the W212 model plays an important role in the braking signaling system, complementing the main rear lamps. Positioned high on the rear of the body, it increases signal clarity for vehicles behind you, especially in heavy traffic or limited visibility conditions. This component is designed specifically for the Mercedes E-Class W212 generation structure, which ensures stable mounting and proper compatibility with the vehicle's electrical system.

Construction, color, and optical fit

The offered third brake light features a red lens, ensuring consistency with the rear lighting assembly and compliance with traffic regulations. The light color is clearly visible both during the day and after dark, and the module's design is adapted to the rear of the W212 body, allowing the lamp line to blend harmoniously with the trunk lid styling.

Its placement at the rear of the vehicle allows for even light distribution at the eye level of drivers behind you, which improves the readability of the braking signal. The original housing geometry facilitates installation in factory mounting points without the need for bodywork interference.

Technical parameters and compatibility

The product belongs to the Main and center brake lights group, meaning it was designed as an integral part of the rear lighting system. Its original Mercedes origin translates to compatibility with factory wiring harnesses, correct connectors, and proper lighting parameters. The module is intended for installation in the rear part of the body, in the location provided by the vehicle manufacturer.

As a used component, this brake light is a sensible choice for post-accident repairs or replacing a damaged module, allowing you to maintain the factory character of the lighting without the need for aftermarket replacements with uncertain parameters.

Benefits of using an original third brake light

Using an original third brake light in a Mercedes W212 offers a number of practical benefits:

• maintaining the consistent styling of the rear body,
• proper cooperation with the factory electrical system,
• clear braking signal for vehicles behind you,
• easier installation thanks to the fitment to factory mounting points.

With this component, you can restore the full functionality of your rear lighting after mechanical damage or failure, without compromising on safety and aesthetics.

Expanding the rear lighting system

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 center brake modules, main rear lamps, or supplementary signal lights, check out the available parts in the Main and center brake lights Mercedes category.

Practical service tips

When replacing the third brake light, it is worth paying attention to the condition of the seals around the lamp and the correct routing of wires to prevent moisture from entering the trunk lid. In the case of broader work on the electrical system or problems with lighting power supply, helpful guides such as the article When is it worth replacing the alternator with a used one: a practical guide for drivers, which discusses symptoms of charging system faults and their impact on the operation of electrical consumers in the car, may be useful.

Summary

Mercedes W212 Third Brake Lamp Additional Light Rear Stoplamp is a functional, factory-fitted rear lighting component that allows you to restore proper braking signaling and maintain the consistent appearance of the vehicle. Choosing an original module from the Main and center brake lights group is a beneficial solution both in terms of technical performance and visual appeal, especially during repairs and renovation of the rear section of a Mercedes E-Class W212.