Audi A4 B9 Q7 4M Headlight Leveling Sensor Bracket Rear Right O/S 4M0907503

Audi A4 B9 Q7 4M Headlight Leveling Sensor Bracket Rear Right O/S is a component from the Automatic Leveling Control category, designed for the precise mounting of the sensor on the rear axle suspension on the right side. It ensures stable operation of the headlight self-leveling system, which translates into safe and comfortable road illumination. This solution is dedicated to Audi vehicles and is compatible with the factory system design.

Specifications and technical data

• SKU: 4M0907503-2
• Mark: Audi
• Condition: Used
• OEM Part Number: 4M0907503
• Substitutable numbers: 4M0907503, 4M0 907 503
• Location on the vehicle: Rear, Right
• Category: Self-Levelling Suspension Parts

Purpose and function in the automatic leveling control system

The described bracket operates within the automatic headlight leveling system, responsible for securely seating the sensor on the rear axle suspension on the right side. A correctly installed component allows the sensor to accurately read changes in the body position relative to the road, which enables the controller to dynamically adjust the headlight beam angle.

Thanks to this, the system maintains the correct light beam geometry both when the trunk is loaded and when driving with passengers in the back seat. Proper operation of the bracket reduces the risk of dazzling other road users and improves driver visibility at night.

Construction and fitment for Audi A4 B9 and Q7 4M

The bracket has been designed specifically for the Audi A4 B9 generation and Audi Q7 4M generation models, ensuring a very good fit to the factory mounting points. The construction is compatible with the original leveling sensor, allowing for an orderly and predictable installation process.

The component is prepared for operation in the demanding conditions of the rear suspension – in an area exposed to dirt, moisture, and temperature changes. Properly shaped mounting points help maintain a stable position of the sensor relative to the control arm and the body, which promotes measurement repeatability.

Vehicle placement and installation aspects

The bracket is intended for installation on the rear right side of the vehicle, in the immediate vicinity of the suspension components. This placement allows the sensor to record the actual suspension deflection while driving, and thus transmit reliable data to the headlight controller.

When replacing, it is recommended to:

• check the condition of the leveling sensor and its joints,
• verify the mounting points on the suspension and body,
• inspect the electrical wiring harness leading to the sensor,
• after installation – perform an adaptation or calibration of the lighting system, if required by the service procedure for the given model.

Characteristics of the used part

The offered bracket is a used part, sourced from the dismantling of an Audi vehicle. Such components are a popular choice as an economical alternative to new parts, especially in the case of specialized systems such as automatic headlight leveling.

Choosing an original bracket from dismantling allows you to maintain structural consistency with the remaining suspension and lighting system components, while simultaneously reducing repair costs. This solution works well both when replacing a damaged bracket and when completing missing parts after bodywork and paint repairs.

Audi automatic leveling control – expansion and selection of components

If you are planning a comprehensive repair or upgrade of the suspension and lighting area in your Audi and need other elements from the same group, such as additional sensor brackets, levers working with the suspension, or related mounting hardware, check the available parts in the Audi Automatic Leveling Control category.

Practical tips for purchasing used parts

When choosing a used headlight leveling sensor bracket, it is worth paying attention to the condition of the mounting points, the absence of cracks, and the overall geometry of the component. A correctly selected and functional bracket will help avoid system errors and warning messages on the dashboard.

To better plan your purchases and consciously use the offer of parts from dismantling, a guide describing the principles of safely choosing used components may be helpful – you can find more practical information in the article Used parts – Your guide to the best offers in the automotive store.

Related technical topics

A functional automatic headlight leveling system works in conjunction with other vehicle systems, such as the suspension or control electronics. In the case of extensive repairs, including the drivetrain, knowledge about the selection and operation of components such as the gearbox may be useful – detailed information can be found in the material Gearbox: manual, automatic, or DSG – typical faults and a guide to buying a used gearbox.