Audi A4: Navigation System

 Leak Detection on Refrigerant Circuit Using Leak Detection Kit -VAS6201A-

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; 

 A/C System, Operating after Charging

  Note If the mechanically driven Air Conditioning (A/C) compressor was removed, rotate it approximately 10 times by hand before using it for the first time (during or after installing, for example before installing the belt) to prevent damage caused by liquid impact when first switched