Add UV-Leak Detection Additive using the in the Refrigerant Circuit

WARNING: This page is about a different car, the 2021 Audi S4 and 2021 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Leak Detection Kit :VAS6201A

The :VAS6201A includes the following tools. Refer to the Parts Information (Tools; Special Tools and Equipment: A/C and Heating).

Fig 1: Identifying Leak Detection System VAS 6201

Courtesy of AUDI OF AMERICA, LLC

Leak Detection Kit - Hand Pump w/Cartridge :VAS6201/1
Leak Detection Kit - Cartridge :VAS6201/2 (with UV-leak detection additive)
Leak Detection Kit - Cleaning Solution :VAS6201/3
UV Leak Detection Lamp :VAS6201/4A
Leak Detection Kit - Eye Protection :VAS6201/6
Leak Detection Kit - Label :VAS6201/7
Leak Detection Kit - Filler Tube :VAS6201/8
Leak Detection Kit - Hand Protection :VAS6201/9

NOTE:

Described in the following are instructions for how to pour the UV-leak detection additive into the refrigerant circuit using the Leak Detection Kit -VAS6201A-. If the UV-leak detection additive is added to the refrigerant circuit with the help of other tools (for example, with the A/C service station) read the applicable operating instructions.

The following is the given amount of UV-leak detection additive that is to be added to a refrigerant circuit with a refrigerant oil quantity of 100 to 150 cm ³ using the Leak Detection Kit -VAS6201A- (2.5 ± 0.5 cm³ ). If the refrigerant oil capacity in the refrigerant circuit is larger, then more UV leak detection additive must be added accordingly (for example, 5.0 ± 0.5 cm³ for a refrigerant circuit with a refrigerant oil capacity of 250 cm ³ . For the relevant refrigerant oil quantities in the refrigerant circuit. Refer to REFRIGERANT R134A CAPACITIES, REFRIGERANT OIL AND APPROVED REFRIGERANT OILS .

If the UV-leak detection additive is added to the refrigerant circuit with the help of other tools (for example, with the A/C service station), observe the prescribed quantities of UV-leak detection additive given in the corresponding operating instructions.