Mercedes-Benz S203 W203 C209 Headlight Switch Unit Button Grey A2035451604

Mercedes-Benz S203 W203 C209 Headlight Switch Unit Button in grey is a factory lighting control component designed for installation in selected C-Class and CLK models. Thanks to its design compliant with the manufacturer's specifications, it ensures precise control of lighting functions and a consistent look with the original dashboard finish. It is a practical choice for users who want to maintain original cockpit ergonomics and proper operation of the electrical system.

Specifications and technical data

• SKU: rhd-A2035451604
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2035451604
• Substitutable numbers: A2035451604, A 203 545 16 04, EM
• Color: Grey
• Category: Switches & Controls

Purpose and function in the vehicle

The described component belongs to the Switches, control elements and ignition locks group and is responsible for operating the basic exterior lighting modes of the vehicle. It has been designed specifically for the interior of Mercedes C-Class W203/S203 generation models and the C209 coupe, ensuring proper mounting geometry and button layout.

The grey color scheme of the panel allows for an aesthetic match to the factory console finish, without the need for interior modifications. The properly profiled knob and buttons facilitate the operation of the switch in daily use, even when wearing gloves or in limited visibility.

Construction and ergonomics of use

The headlight switch is constructed as a compact module mounted in the dashboard, with clearly marked operating positions. The control system ensures:

• clear division of functions on a single control unit,
• intuitive switching between individual modes,
• consistent appearance with other Mercedes cockpit elements.

Thanks to the use of original housing geometry and connectors, the module works with the factory electrical harness, which reduces the risk of installation errors and compatibility issues.

Benefits of using an original switch

Using a headlight switch dedicated to specific Mercedes models allows for maintaining the factory operating parameters of the lighting system. Key advantages include:

• secure fit to the dashboard – no need for modifications to mounts or covers,
• preservation of the original lighting operation logic,
• consistent grey panel color with other interior elements.

The element from this group is particularly recommended for repairs following mechanical damage to the panel, problems with the knob's operation, or restoring full lighting functionality after previous modifications.

Condition and service application

The offered switch comes from a Mercedes vehicle and is a used component, which makes it an attractive solution for an economical repair of the lighting control system. Choosing an original component from dismantling allows you to maintain compatibility with the factory installation and avoid problems typical of replacements of uncertain origin.

The module will work well both for a standard replacement of a worn-out switch and for a comprehensive interior renovation, when you want to maintain the original character of the cockpit and the correct operation of all lighting functions.

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

When planning broader service work, it is also worth checking out the guide on the safe selection of used brake system components – you will find practical tips in the article "Second-hand brake system: how to safely choose discs, calipers, and ABS?", which helps you make informed choices about parts from dismantling based on real technical criteria.