Audi Q7 4M Headlight Level Height Sensor Unit Rear Right O/S 4M0907503

Audi Q7 4M Headlight Level Height Sensor Unit Rear Right O/S is an original headlight adjustment system component designed for installation on the right side of the rear axle. This component works in conjunction with the suspension and the headlight control module to maintain a stable road illumination line under varying vehicle loads, which translates into safe and comfortable night driving.

Specifications and technical data

• SKU: 4M0907503-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 4M0907503
• Substitutable numbers: 4M0907503, 4M0 907 503
• Location on the vehicle: Rear, Right
• Category: Other Steering & Suspension Parts

Purpose and function in the Audi Q7 4M

The presented sensor is a part of the automatic headlight leveling system in the Audi Q7 4M, mounted in the rear right suspension area. Based on changes in the body position relative to the vehicle's axle, it sends a signal to the headlight control module, which adjusts the headlight beam angle.

This solution is particularly important in SUV-class vehicles, where load changes (passengers, luggage, trailer) are frequent, and maintaining the correct light beam level is significant for both the driver and other road users.

Construction and vehicle placement

The Audi Q7 4M Headlight Level Height Sensor Unit Rear Right O/S is designed to operate in demanding conditions near the suspension. Its placement on the rear right side of the vehicle allows for precise reading of body geometry changes during acceleration, braking, and driving with a load.

Typical installation involves connecting the sensor to a suspension component via a lever or linkage and connecting it to the vehicle's electrical harness. Thanks to the factory fit for the Q7 4M platform, installation is straightforward, maintaining the original mounting points.

Benefits of using an original sensor

Using a dedicated leveling sensor in the Audi Q7 4M ensures:

• proper cooperation with the factory headlight control module and electrical system,
• maintenance of the correct headlight beam angle under varying loads,
• reduced risk of dazzling oncoming drivers,
• stable system operation in automatic mode without the need for manual adjustment.

For the user, this means consistent lighting system performance and the preservation of parameters specified by the vehicle manufacturer, which is also important during periodic technical inspections.

Condition and service application

The offered item is in used condition, which allows for an economical repair of the headlight leveling system while maintaining original specifications. It works well both as a replacement part in the event of an existing sensor failure and during comprehensive suspension and lighting system maintenance when replacing multiple components at once.

Before installation, it is recommended to verify proper operation in the vehicle and, if necessary, perform system adaptation or calibration in accordance with the service procedures provided for the Audi Q7 4M.

System expansion and related components

If you are planning a comprehensive repair or upgrade of the lighting and suspension area in your Audi and need other elements from the same group, such as additional leveling sensors, mounting brackets, or electrical harnesses, check the available parts in the Other Audi category.

For users interested in a broader look at the structural differences between sports versions and standard models of the brand, it is worth reading an article discussing, among other things, engines, brakes, and the chassis of the RS series: Audi RS vs other models – what is hidden under the hood and chassis?.

If you are considering a choice between new and used components and want to better understand the relationship between cost, durability, and availability of parts, the following guide may be helpful: Car parts – new or used? Comparing costs, quality, and durability.