Mercedes W169 W203 W211 C219 W220 Headlight Height Level Sensor A0105427717

Mercedes W169 W203 W211 C219 W220 Headlight Height Level Sensor is a precision component of the beam height adjustment system in the Front lights section, mounted in the front part of the vehicle. It is responsible for maintaining a stable and correct road illumination level, which improves driving comfort at night and reduces the risk of blinding other drivers. This used original component is a sensible choice when servicing the factory leveling system in Mercedes vehicles.

Specifications and technical data

• SKU: A0105427717-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0105427717
• Substitutable numbers: A0105427717, A 010 542 77 17
• Location on the vehicle: Front
• Category: Headlight Assemblies

Purpose and function of the leveling sensor

The headlight leveling sensor in Mercedes W169 and W211 models works with the suspension system and the lighting control unit, transmitting information about the current position of the body relative to the front axle. Based on this, the system adjusts the headlight angle to maintain a stable, predictable light beam regardless of vehicle load or driving dynamics.

Its placement at the front of the vehicle allows for quick reactions to changes in body position during braking, acceleration, or driving over bumps. Thanks to this, the Front lights system maintains proper operating parameters, which is important for both safety and compliance with technical inspection requirements.

Benefits of using an original Mercedes sensor

Using an original leveling sensor in Mercedes cars ensures:

• consistent operation with the factory lighting control unit,
• proper cooperation with the front headlights,
• stable maintenance of the set light beam height,
• reduced risk of lighting system errors and warning messages on the dashboard.

For users who expect predictable lighting system behavior, choosing a component dedicated to specific Mercedes generations is a technically safe and economically justified solution. The used element allows for reducing repair costs while maintaining the correct operating parameters of the system.

Vehicle placement and mounting aspects

The sensor is designed for installation in the front part of the vehicle, in the zone interacting with the suspension. This placement enables accurate reading of body position changes, which translates into precise headlight control. During replacement, it is important to maintain the correct alignment of the element relative to the mounting points and to check the electrical harness for mechanical damage.

In service practice, installation involves:

• removing the worn sensor from the front suspension,
• connecting the electrical connector to the vehicle's wiring,
• properly securing the sensor body at the designated points,
• verifying the operation of the headlight leveling system after installation.

This approach allows for restoring the correct operation of the system without interfering with other lighting components.

Application in service and lighting upgrades

Mercedes W169 W203 W211 C219 W220 Headlight Height Level Sensor is suitable both for standard replacement of a damaged element and for work related to restoring the full functionality of the factory lighting system. This is particularly important in vehicles equipped with advanced headlights, where correct leveling affects lighting effectiveness and driving comfort.

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 additional mounting accessories, check the available parts in the Mercedes Front lights category.

For those interested in a broader approach to retrofitting the car with elements from higher equipment versions, including more advanced lighting systems, the article describing practical aspects of retrofitting may be helpful – see how to plan retrofitting using used components.