Audi A7 4G Headlight Level Sensor Left N/S Module Leveling Unit 1T0907503B

Audi A7 4G Headlight Level Sensor Left N/S Module Leveling Unit is a precision component of the beam height adjustment system, responsible for the stable operation of the automatic headlight leveling. Thanks to its factory design intended for the Audi brand, it ensures consistency with the vehicle's electronics and proper interaction with the control module. This used component from the Front lights group allows for the technical repair of the system without the need for a costly replacement of the entire headlight.

Specifications and technical data

• SKU: 1T0907503B-2
• Mark: Audi
• Condition: Used
• OEM Part Number: 1T0907503B
• Substitutable numbers: 1T0907503B, 1T0 907 503 B, 4H0941285H, 4H0 941 285 H
• Location on the vehicle: Left
• Category: Headlight Assemblies

Function of the headlight leveling sensor

The headlight leveling sensor in the Audi A7 4G is responsible for continuously measuring the position of the body relative to the road axis and transmitting this data to the headlight controller. Based on the signal from the sensor, the system corrects the tilt angle of the lamps, which reduces glare for other road users and maintains proper road illumination.

This element is particularly important in vehicles equipped with advanced headlights with automatic adjustment, where stable, repeatable information about the suspension position is required. A properly functioning sensor supports compliance with homologation requirements regarding low beam operation.

Purpose and placement on the vehicle

The presented sensor is intended for installation on the left side of the vehicle, in accordance with the Placement on vehicle parameter. In practice, this means matching the mounting geometry and operating range to the specific position in the Audi A7 4G suspension system. Proper placement is crucial for the correct interpretation of body movements by the headlight controller.

The product comes from the line of original Brand components, which promotes compatibility with factory wiring, connectors, and control software. As a result, installation is carried out without the need for mechanical or electrical adaptation.

Identification parameters and compatibility

The sensor has a factory OEM part number, which facilitates unambiguous identification in service catalogs and when selecting by VIN. Additionally, interchangeable numbers are available, which allow for confirming compatibility with various equipment versions within the same corporate platform.

Thanks to the use of the original reference, it is possible to seamlessly assign the component to a specific headlight and suspension configuration, without the risk of communication errors with the control module. This solution is particularly important in premium vehicles, where the lighting system is integrated with other safety systems.

Condition, origin, and service application

The offered sensor is a Condition element, which allows for an economical repair of the leveling system while maintaining factory specifications. In practice, this is a beneficial solution when diagnosing faults such as leveling errors, incorrect beam angle, or headlight system failure messages.

In service applications, the sensor will work well both when replacing a damaged element after a collision and when restoring full system functionality after suspension modifications. The use of an original component reduces the risk of repeated interference with the vehicle's electrical installation.

Application in the Audi Front lights system

The sensor works with the Front lights system, influencing the stability and repeatability of the headlight setting in the Audi A7 4G. It is an intermediate element between the suspension mechanics and the control electronics, which is why its proper operation has a direct impact on driving comfort and safety under varying vehicle loads.

If you are planning a comprehensive repair or upgrade of the front lighting zone in your Audi and need other elements from the same group, such as headlights, control modules, or range regulators, check the available parts in the Audi Front lights category.

Technical support and selection by numbers

When selecting a headlight leveling sensor for the Audi A7 4G, it is worth using the manufacturer's markings, reference numbers, and catalog data to avoid installation discrepancies. In case of doubt, it is helpful to compare the mounting design and connector type with the currently installed element.

For users interested in deepening their knowledge about diagnostics and component selection by manufacturer numbers and VIN, an article describing the principles of operation and maintenance of fuel systems may be useful – you can find it here: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.