Leak Detection Additive, Filling, Empty Refrigerant Circuit

WARNING: This page is about a different car, the 2014 Volkswagen Touareg, 2013 Volkswagen Touareg, 2012 Volkswagen Touareg, and 2011 Volkswagen Touareg. However, it is still accessible from the selected car via links, so may be relevant.

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

The cartridge -A- contains 15.4 ml of leak detection additive (one unit -B- corresponds to 2.5 ml).

-- Assemble the Leak Detection Kit -VAS6201A- item -1- with the Leak Detection Kit - Cartridge -VAS6201/2- item -2-.

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Insert the Leak Detection Kit - Filler Tube:VAS6201/8 (REFRIGERANT CIRCUIT, TRACING LEAKS, WITH LEAK DETECTION SYSTEM VAS6201/8 item -7-) into the hand pump.

-- Open the hand pump service valve.

Leak detection additive is best added to empty refrigerant circuit via opened connection.

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Open an easily accessible connection point on refrigerant circuit

-- Cover area around connection point with foil or absorbent paper.

-- Hold tube upwards.

-- Tighten the toggle on the hand pump until the leak detection additive comes out of the tube.

-- Add 2.5 ± 0.5 ml (milliliter = cm³ ) of leak detection additive to the refrigerant circuit.

NOTE:

If leak detection fluid was filled already in a refrigerant circuit for an earlier repair, note the following: only add new leak detection additive if the refrigerant oil will be replaced. If only a portion of the refrigerant oil was replaced, only add a proportionate amount of the leak detection additive. For example, if 100 ml of refrigerant oil was replaced in a vehicle with 250 ml, add only 1 ml (cm³ ) of leak detection additive.

-- Replace the O-rings on opened connection point.

-- Assemble refrigerant circuit

-- Apply a label near the service connection stating that leak detection additive was added to the refrigerant circuit.

-- Evacuate and fill the refrigerant circuit according to specification. Refer to REFRIGERANT CIRCUIT, EVACUATING WITH A/C Service Station and REFRIGERANT CIRCUIT, CHARGING WITH A/C Service Station .

-- Start the A/C system.

NOTE:

The A/C system must run for at least 60 minutes so the additive distributes itself through the entire refrigerant circuit. The compressor must be running. Depending on the size of the leak, it may become visible within that time.

-- Find the leak in the refrigerant circuit with the UV lamp VAS6196/4. Refer to REFRIGERANT CIRCUIT DETECTING LEAKS USING UV LAMP VAS6196/4 .

NOTE:

Remove existing leak detection additive in the engine compartment or from the refrigerant circuit components using Leak Detection Kit - Cleaning Solution -VAS6201/3-.

Leak Detection Additive with Filled Refrigerant Circuit, Filling

NOTE:

A small quantity of leak detection additive remains in the service connection. Carefully remove this residual amount so a leaking area is not detected erroneously upon a later leak detection.

The cartridge -A- contains 15.4 ml of leak detection additive (one unit -B- corresponds to 2.5 ml).

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Switch off the ignition.

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the cap from the low pressure side service connection of the refrigerant circuit.

-- Assemble the Leak Detection Kit -VAS6201A- -1- with the Leak Detection Kit - Cartridge -VAS6201/2- -2-.

NOTE:

Make sure the hand pump hose is completely filled with leak detection additive.

-- Place the quick-release coupling on the low pressure side service connection and tighten the hand wheel to open the service coupling. Hold the hose upward and tighten the handle of the hand pump just enough until the leak detection additive starts to emerge from the tube.

-- Cover the area around the service connection on the vehicle with a foil or with absorbent paper.

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Tighten the toggle on the hand pump to add 2.5 ± 0.5 ml (milliliter = cm³ ) of leak detection additive to the refrigerant circuit.

-- Close the service coupling and remove it from the service connection.

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the rest of the leak detection additive from the service connection, for example with absorbent paper.

-- Seal off the service connection with a cap.

-- If necessary, clean area around service connection using cleaning agents.

-- Place a label next to the service connection stating that leak detection additive was added to the refrigerant circuit.

-- Start the A/C system.

NOTE:

-- Find the leak in the refrigerant circuit with the UV lamp VAS6196/4. Refer to REFRIGERANT CIRCUIT DETECTING LEAKS USING UV LAMP VAS6196/4 .

NOTE:

Remove existing leak detection additive in the engine compartment or from the refrigerant circuit components using Leak Detection Kit - Cleaning Solution -VAS6201/3-.