Mercedes W204 Headlight Light Height Level Sensor Module Unit A0045428418

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W204 Headlight Light Height Level Sensor Module Unit is a specialized lighting system component responsible for precise headlight beam height control. By using an original Mercedes solution, the headlight system maintains stable operating parameters, which translates into better road visibility and driving comfort. This used module is a sensible choice for repairs when you prioritize factory compatibility with the vehicle's electrical installation.

Specifications and technical data

• SKU: A0045428418
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0045428418
• Substitutable numbers: A0045428418, A 004 542 84 18
• Category: Headlight Assemblies

Purpose and function in the front lighting system

The presented level sensor module works with the suspension system and lighting controller to maintain the correct headlight beam height. In practice, this means that when the vehicle's load or driving dynamics change, the system automatically corrects the headlight position, reducing the risk of dazzling other road users and improving road visibility ahead of the car.

This component is particularly important in vehicles equipped with advanced headlights, where stable and repeatable headlight height adjustment is crucial for the proper operation of the entire front lighting system.

Benefits of using an original Mercedes module

Using an original module in the front lighting system ensures:

• consistency with the vehicle's factory electrical architecture,
• proper cooperation with other controllers and sensors,
• stable operating parameters over a long service life,
• reduced risk of errors in the vehicle's diagnostic system.

For the user, this means more predictable lighting system behavior, no need to adapt the installation, and easier diagnostics in case of any faults. When repairing or replacing the leveling module, choosing an original solution is often the most cost-effective in the long run.

Product characteristics and condition

The offered module comes from the Mercedes group and is a component designed for use in the front lighting system in W204 family models. The product is in used condition, which in practice means it was previously operated in a vehicle but is still suitable for further use after proper installation. Such components are frequently chosen for servicing older vehicles, where maintaining original specifications at reasonable repair costs is a priority.

The module is a plug-and-play solution within its model platform – after proper connection to the wiring harness and mounting system, it can be put into operation without the need for installation modifications, while maintaining factory headlight height control parameters.

Application in service practice

Replacing the headlight level sensor module is recommended, among other situations, when errors related to headlight height adjustment, unstable headlight positioning, or warning messages in the onboard system appear. In service practice, it is used both for post-collision repairs and for typical operational faults related to the lighting system.

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, control modules, or position sensors, check the available parts in the Mercedes front lights category.

Additional information and technical support

Before purchasing, it is worth comparing the parameters of your old module with the data in the product's technical specification and verifying compatibility with the specific vehicle equipment version. In case of doubt, checking markings in the manufacturer's catalogs or consulting a service specializing in the Mercedes brand may also be helpful.

If you are also interested in other areas of vehicle systems, including solutions improving engine performance and exhaust flow characteristics, you can find additional information in the article dedicated to performance exhausts: Performance exhaust system: used manifolds and sports catalytic converters on the road.