Complete kit for retrofitting xenon headlights with automatic headlight adjustment for Audi A4 B6/8E Scope of delivery: Cable set Control unit (used) Mounting plate, sensors, screws Notes: After installation, the sensors must be reprogrammed via diagnostics In addition, with xenon headlights you also need headlight washer nozzles. This option is often supplied with the winter package from the factory In most countries, the height adjustment system is required by law in combination with xenon headlights