Mercedes-Benz C CLK Class W203 C209 Headlight Switch Unit Button A2035451204

Mercedes-Benz C CLK Class W203 C209 Headlight Switch Unit Button is an original component from the Switches, control elements and ignition locks group, designed for precise operation of the lighting in the driver's cabin. The grey color of the front panel harmoniously blends with the interior styling of Mercedes models, ensuring a consistent, factory-look appearance and convenient access to lighting functions.

Specifications and technical data

• SKU: rhd-A2035451204
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2035451204
• Substitutable numbers: A2035451204, A 203 545 12 04, AS
• Color: Grey
• Category: Switches & Controls

Purpose and function in the control system

The offered headlight switch is a factory lighting control module for the Mercedes-Benz C-Class and CLK of the W203/C209 generation. The component is mounted in the dashboard panel on the driver's side and is responsible for operating the basic light modes, in accordance with the factory logic of the Mercedes electrical system.

As part of the original control system, the switch works with the vehicle's installation without the need for wiring modifications or mounting point adaptations. This ensures proper communication with other body modules and full functionality of the lighting system.

Design, color scheme and visual fit

The front of the switch is finished in grey, matched to the factory color scheme of the center console and the lower part of the dashboard in many Mercedes interior configurations. This color scheme allows for a uniform cockpit appearance after replacing the component, without the effect of an "out-of-place" panel.

The layout of buttons and knobs is consistent with the manufacturer's original design, which facilitates intuitive operation of the lights even without looking at the panel. The ergonomic shape and clear markings promote safe operation, especially during night driving.

Condition, origin and benefits of using a used part

The component comes from disassembly and is offered as used, which allows for a significant reduction in repair costs compared to purchasing a new module. At the same time, you retain all the features of an original Mercedes part – proper fitment, electrical compatibility, and compliance with factory quality standards.

Choosing an original second-hand headlight switch is a sensible solution for users who want to restore full lighting functionality while maintaining interior visual consistency and controlling service budgets.

To better understand the advantages of using original parts from disassembly in cars of this brand, it is worth reading the article: Used parts for Mercedes – original components from disassembly.

Assembly and operational aspects

The headlight switch is structurally prepared for installation in the place of the factory panel, which in practice means matched clips, the correct housing shape, and connectors intended for the installation in C and CLK models. Thanks to this, the replacement of the component can be carried out in an orderly manner, without interfering with the dashboard structure.

The use of an original control module reduces the risk of communication problems in the vehicle's electrical network, such as lighting operation errors or malfunctions of related functions. This is particularly important in premium class cars, where comfort and safety systems are closely integrated.

Complementary Mercedes control elements

If you are planning a comprehensive repair or upgrade of the cockpit area in your Mercedes and need other elements from the same group, such as additional switches, control modules, or ignition lock components, check the available parts in the Mercedes switches, control elements and ignition locks category.

For larger service works, it is also worth paying attention to the impact of the components used on the future value of the vehicle – the material: original used parts and the resale price of the car, which discusses the importance of factory components when selling a car later, may be helpful.