Mercedes W164 C209 W211 W251 Headlight Range Control Module Left N/S A0038205126

Mercedes W164 C209 W211 W251 Headlight Range Control Module Left N/S is a specialized lighting system component designed to control the cornering function of the headlight on the left side of the vehicle. Thanks to its precise operation, the module supports the proper functioning of Front lights, improving cornering visibility and driving safety. This solution is dedicated to users expecting a proven, factory-spec design tailored to specific Mercedes models.

Specifications and technical data

• SKU: A0038205126
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0038205126
• Substitutable numbers: A0038205126, A 003 820 51 26, 5DF008704, 5DF 008 704
• Location on the vehicle: Left
• Category: Headlight Assemblies

Purpose and function of the headlight range control module

The presented module is responsible for controlling the cornering mechanism of the left headlight in selected Mercedes models, ensuring the correct alignment of the light beam relative to the driving path. The component works with the vehicle's control system, reacting to the steering angle and driving conditions, which translates into stable, predictable road illumination.

The positioning on the left side of the vehicle allows for precise fitting to the factory installation without the need for modifying wiring harnesses or mounts. The module is structurally prepared to operate in the demanding environment of the headlight housing, where resistance to temperature fluctuations and vibrations is essential.

Compatibility with Mercedes models

The Mercedes W164 C209 W211 W251 Headlight Range Control Module Left N/S has been designed for use in selected generations of Mercedes W164, C209, W211, and W251 classes. This means it can be used both for standard replacement of a faulty controller and for restoring full functionality of the cornering light system after accident repairs or upgrades.

By maintaining the factory design concept, the module works with original headlights and electrical installations, which facilitates installation and reduces the risk of communication errors in the vehicle's system. This is particularly important in cars equipped with advanced safety systems, where proper lighting operation is one of the key elements.

Technical characteristics and installation

As a component from the Front lights group, the module acts as an electronic controller responsible for handling the cornering functions of the headlight on the left side. The design is intended for installation in place of the factory controller, using existing mounting points and electrical connectors.

During installation, it is recommended to:

• verify the module's compatibility with the specific vehicle equipment version,
• check the condition of connectors and electrical harnesses before connection,
• perform light adaptation or calibration if required by the service procedure for the given model.

This approach allows for stable system operation and minimizes the risk of errors appearing in the vehicle's diagnostic system.

Product condition and service application

The offered module is a used part, making it an attractive service solution for users looking for a technically sound component on a reasonable budget. This type of part works well for maintenance repairs when it is necessary to replace a damaged cornering light controller without interfering with other headlight components.

Choosing an original module dedicated to specific Mercedes models reduces the risk of compatibility issues and facilitates future diagnostics. It is a practical solution both for workshops specializing in the brand and for conscious users who independently maintain the condition of their lighting system.

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 elements from the same group, such as headlights, control modules, or turn signals, check the available parts in the Mercedes Front lights category.

For drivers interested in a broader view of vehicle maintenance, including the selection of transmission components, a guide on common faults and purchasing used gearboxes may be useful – more information can be found in the article Gearbox: manual, automatic or DSG – common faults and a guide to buying a used gearbox.