Mercedes W204 Hazard Warning Light ESP Switch Button Unit A2049051900

The Mercedes W204 Hazard Light Switch Button is an original part from the Switches, Controls, and Ignitions group, designed for operating the hazard warning lights in Mercedes vehicles. Its original design ensures proper compatibility with the vehicle's electrical system and a cohesive look with other cockpit elements.

Specifications and technical data

• SKU: A2049051900
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2049051900
• Substitutable numbers: A2049051900, A 204 905 19 00
• Category: Switches & Controls

Function and Application in the Safety System

The hazard light button in Mercedes C-Class W204 models is responsible for quickly activating the warning signal in situations of sudden stops or road hazards. This component is integrated into the vehicle's system in a way that ensures:

• immediate activation of all turn signals upon pressing,
• clear, central placement on the control panel,
• ergonomic access for the driver while driving.

By maintaining its original geometry and connectors, the button works with the original control module, reducing the risk of electrical system errors.

Construction and Integration with the Control Panel

This part belongs to the Switches, Controls, and Ignitions group, meaning it's designed for seamless integration with the dashboard and other switches in a Mercedes. The construction includes:

• dedicated mounting points tailored to the W204 center console,
• an original electrical connector allowing installation without wiring modifications,
• a consistent design with other control elements in the cabin.

This solution facilitates installation and helps maintain the original character of the vehicle's interior.

Benefits of Using an Original Used Part

Choosing a used, original hazard light switch for a Mercedes W204 offers a sensible compromise between cost and quality. Compared to aftermarket alternatives, an original factory switch ensures:

• compliance with the electrical system's factory specifications,
• proper operation of the illumination and switching logic,
• aesthetic matching with other cockpit elements.

A used component allows for cost savings while maintaining the manufacturer's original specifications, which is particularly important for premium vehicle repairs.

Part Selection by Numbers and Mercedes Compatibility

This hazard light switch is designated as a Mercedes brand product, and its identification in catalogs is done through a dedicated OEM part number and associated cross-reference numbers. This allows for precise verification of compatibility with specific equipment versions and W204 body years. In practice, this means easier selection of the part for the existing system and a reduced risk of installation issues.

Condition and Suitability for Further Use

The offered button is designated as a used part, enabling an economical repair of the hazard lighting control system without the need to invest in a new component. This type of part is particularly useful for:

• mechanical damage to the original button (cracks, breaks),
• problems with the hazard light function due to switch wear,
• completing the control panel after interior repairs.

If you are planning a comprehensive repair or modernization of the cockpit area in your Mercedes and need other parts from the same group, such as function buttons, light switches, or ignition components, check the available parts in the Mercedes Switches, Controls, and Ignitions category.

To better plan your repair budget and make informed choices about original dismantled parts, consult the guide on our blog: Used Mercedes Parts – Original Dismantled Parts. Additional tips on the most frequently replaced components in passenger cars are also provided in the article TOP 10 Most Frequently Replaced Parts in Your Car, which will help you better plan future inspections and repairs.