Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Adding UV-leak detection additive when the refrigerant circuit is empty
The cartridge -A- contains 15.4 ml of UV-leak detection additive (one unit -B- corresponds to 2.5 ml).
-- Assemble the Leak Detection Kit -VAS 6201A- item -1- with the Leak Detection Kit - Cartridge -VAS 6201/2- item -2-.
-- Insert the Leak Detection Kit - Filler Tube:VAS 6201/8 (Add UV-leak detection additive using the in the refrigerant circuit. VAS 6201/8 item -7-) into the hand pump.
-- Open the hand pump service valve.
UV-leak detection additive is best added to the empty refrigerant circuit via a service connection or an opened connection.
If the refrigerant circuit is empty, then it is better to add the UV-leak detection additive via a connection point (for example, when the connection point is already open). This way no UV-leak detection additive remains in the service connection and the connection does not need to cleaned.
- Add the UV-leak detection additive to the refrigerant circuit via a service connection. Refer to Adding UV-leak detection additive when the refrigerant circuit is full .
- Add the UV-leak detection additive to the refrigerant circuit via an opened connection. Refer to Add the UV-leak detection additive to the refrigerant circuit via an opened connection. .
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.