Mercedes W203 W204 Brake Pedal Switch Stop Reverse Light A2035450106

Mercedes W203 W204 Brake Pedal Switch Stop Reverse Light is a component from the Switches, control elements and ignition locks group, responsible for precisely sending a signal to the brake or reverse lights in Mercedes vehicles. Maintaining the proper operation of this component has a direct impact on safety, correct signaling of maneuvers, and cooperation with the vehicle's electronic systems.

Specifications and technical data

• SKU: A2035450106
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2035450106
• Substitutable numbers: A2035450106, A 203 545 01 06
• Category: Switches & Controls

Function and application in the electrical system

The brake/reverse light switch in Mercedes W203 and W204 models acts as an electrical control element that reacts to the position of the relevant mechanisms (e.g., brake pedal or gear selector) and transmits a signal to the lighting system. A properly functioning switch ensures:

• immediate activation of brake lights when braking,
• reliable activation of reverse lights when shifting into reverse gear,
• cooperation with driver assistance systems that use information about braking or reversing.

As a result, the external signaling system remains consistent with the vehicle's actual maneuvers, which improves the clarity of the car's behavior on the road.

Design and integration with the Mercedes electrical system

The switch has been designed specifically for use in Mercedes W203 and W204 class vehicles, which translates into matched mounting geometry and the appropriate type of electrical connector. This means the component is ready to work with the existing electrical harness without the need for any installation modifications.

The original solution from the Switches, control elements and ignition locks group ensures compatibility with factory control modules, minimizing the risk of diagnostic errors and incorrect messages in onboard systems.

Benefits of using an original used component

Choosing an original, used brake/reverse light switch for a Mercedes allows you to combine cost control with maintaining the correct operating parameters of the electrical system. This type of component is designed for specific models, thanks to which it:

• maintains compliance with factory control logic,
• reduces the risk of communication problems in the vehicle network,
• facilitates computer diagnostics at a service center.

This solution is particularly beneficial for repairs where both safety and the economy of operating a premium class vehicle are important.

Condition, verification, and preparation for installation

The item is offered as a used component sourced from the dismantling of a Mercedes vehicle. This type of part allows for restoring the correct operation of brake or reverse lights without the need to invest in a new component, while maintaining the manufacturer's original specifications. Before installation, it is recommended to perform a standard check of the vehicle's electrical system to rule out additional damage to harnesses or connectors.

Due to the nature of the electrical component, proper installation should be performed in accordance with safety rules – disconnecting the power supply, proper seating in the socket, and checking that the plug is securely fastened.

Why choose original used Mercedes parts

When repairing premium class vehicles, many users consider using original components from dismantling. This allows for maintaining the technical consistency of the car at reasonable service costs. More practical information on this topic can be found in the article Used parts for Mercedes – original components from dismantling, where the advantages of such an approach in the context of various vehicle systems are discussed.

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