Audi A4: Assist systems

 Headrest, Removing and Installing

Removing - Set the backrest toward the rear at an angle. - Grip the rear cover -1- at the lower edge and push it upward out of the locking mechanism in the direction of -arrows-. - Move the headrest all the way up. - Press down on the release ring -arrow- on the left headrest

 Finding Leaks via Vacuum Test using A/C Service Station or Nitrogen Pressure Testing

Vehicles with a High Voltage System (Hybrid Vehicles) Read and follow all of the supplemental warnings for all work performed on vehicles with the high voltage system. Refer to → Chapter "Warnings when Working on Vehicles with High Voltage System" and → Electrical Equipment;