Mercedes W204 Headlight Level Sensor Leveling Control Unit Module A1669003401

Mercedes W204 Headlight Level Sensor Leveling Control Unit Module is a specialized lighting system component responsible for the precise control of headlights in Mercedes vehicles. This component from the Front lights category ensures proper communication with the vehicle's electrical system, stabilizing headlight operation under various operating conditions.

Specifications and technical data

• SKU: A1669003401
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1669003401
• Substitutable numbers: A1669003401, A 166 900 34 01
• Category: Headlight Assemblies

Purpose and function of the module

The offered control module is dedicated to the front lighting system in W204 series models, where it is responsible for managing headlight operation in accordance with signals from the vehicle's electrical system. As an electronic component, it works with the factory wiring harness, ensuring correct switching on/off and appropriate headlight logic.

Thanks to a design compliant with manufacturer standards, the module allows for maintaining factory lighting system performance parameters, which translates into stable headlight operation and consistency with other vehicle systems.

Benefits of using an original controller

Using an original control module in the front lighting system allows for maintaining compatibility with the vehicle's factory electrical architecture. This solution reduces the risk of communication errors in the installation, facilitates diagnostics, and minimizes issues with software and hardware compatibility.

Choosing a used, functional OEM component is also a cost-effective solution while maintaining high build quality and fitment for the specific vehicle platform. The module is designed for installation in place of the factory controller, which facilitates efficient replacement in workshop conditions.

Condition and installation aspects

The item is offered in used condition, meaning it has been removed from a vehicle and was previously in operation. Before installation, standard verification of the electrical system and connection integrity is recommended to ensure proper module interaction with the existing system.

Due to the nature of electronic headlight controllers, installation by a qualified service center with experience in Mercedes vehicles and access to appropriate diagnostic tools is recommended.

Selection by part numbers and compatibility

The module features manufacturer markings and reference numbers that allow for precise matching to a specific vehicle configuration. When selecting parts, it is worth using the OEM number or interchangeable numbers to verify compatibility with your specific car and equipment version.

For users interested in a broader context of selecting used components based on manufacturer markings and verification procedures, the following expert guide may be helpful: Why it is worth buying used gearboxes and engines – facts instead of myths, which discusses practical aspects of identifying parts by numbers and optimizing repair costs.

Expanding the lighting system in Mercedes

If you are planning a comprehensive repair or upgrade of the front lighting zone in your Mercedes and need other components from the same group, such as headlights, turn signals, or height adjustment modules, check out the available parts in the Mercedes Front lights category.