Mercedes W177 Headlight Height Level Sensor Rod Mount Rear Right O/S A2473205400

Mercedes W177 Headlight Height Level Sensor Rod Mount Rear Right O/S is a precision mounting component for the headlight leveling system, designed for the rear right side of the suspension. It ensures stable, repeatable positioning of the sensor, which translates into proper operation of the automatic headlight leveling system and safe road illumination. This solution is dedicated to Mercedes vehicles, engineered to match factory suspension geometry.

Specifications and technical data

• SKU: A2473205400
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2473205400
• Substitutable numbers: A2473205400, A 247 320 54 00
• Location on the vehicle: Rear, Right
• Part type: Body Side
• Category: Body Mouldings & Trims

Purpose and function of the component

The headlight level sensor rod mount on the rear right axle is responsible for the rigid and repeatable attachment of the sensor relative to the suspension components. This allows the automatic headlight leveling system to receive a reliable signal regarding current suspension deflection, which enables:

• maintaining the correct headlight beam angle when the vehicle load changes,
• minimizing the risk of dazzling other road users,
• maintaining compliance with requirements for headlight operation in vehicles equipped with automatic leveling.

The component is dedicated for installation on the rear right side of the vehicle, which eliminates fitment issues and facilitates correct identification of the installation location.

Construction and fitment for Mercedes W177

The mount has been designed specifically for the Mercedes W177 platform, maintaining factory mounting points and sensor operating geometry. The appropriately selected shape and arrangement of mounting holes ensure:

• a stable connection with suspension and body components,
• the correct position of the sensor relative to the control arm or beam,
• compatibility with standard headlight leveling system equipment.

As an element from the Protective and decorative strips group, the mount also plays an auxiliary role in organizing the installation routing within the suspension area, which facilitates service and reduces the risk of accidental damage to wires or connectors.

Benefits of using the original mount

Using a dedicated headlight level sensor mount in a Mercedes W177 allows for consistency with the factory lighting system design. Key advantages include:

• proper cooperation with the automatic leveling system without the need for mounting modifications,
• preservation of the sensor operating geometry intended by the manufacturer,
• reduction of the risk of diagnostic errors and headlight malfunction messages.

The used component is a sensible choice for post-accident repairs or suspension service when only the bracket is damaged, while other system components remain functional.

Installation area and service recommendations

The mount operates in the demanding environment of the rear axle, exposed to dirt, water, and mechanical loads. When replacing it, it is worth paying attention to:

• checking the free movement of the sensor lever after installation,
• correct routing of the electrical harness near the mount,
• verifying that the headlight leveling system reacts smoothly to changes in vehicle load after installation.

After installation, it is recommended to perform a short test drive in night conditions to verify the stability of the light beam and the correct operation of the automatic adjustment.

If you are planning a comprehensive repair or upgrade of the sill area in your Mercedes and need other elements from the same group, such as covers, overlays, or additional strips, check the available parts in the Mercedes protective and decorative strips category.

For drivers interested in broader use of dismantled parts in vehicle modification projects, inspiring tips on combining economical service with improving the look and character of the car can be found in the article Emotions and design – visual and mechanical tuning of a Seat using dismantled components.