General description Headlight Leveling Level Range Control Sensor for various Audi models. This new sensor is designed to ensure optimal headlight alignment for improved visibility and safety on the road. Technical specifications Manufacturer Part Number: 4B0907503, 4B0907503A Material: Plastic Color: Black Allowed measurement error: +/- 1-3 cm Compatibility and accessories Compatible with Audi TT (2000-2006) Compatible with Audi 3B, 3BG, Golf 4 Compatible with Audi A3, A4, A6, A8 Compatible with Audi S4, S/A8 (1994-2003) Compatible with Audi S/TT (1999-2006) Compatible with Audi RS4 (2001-2002) Compatible with Audi RS6 (2006-2005) Compatible with Audi S/A3 (1997-2003) Compatible with Audi S/A4 (1999-2001) Compatible with Audi S/A6 (1998-2005) Installation Installation instructions are not provided; professional installation is recommended to ensure proper functionality. Usage This headlight level sensor is used to adjust the angle of the headlights based on the load of the vehicle,