Heater and A/C Unit Refrigerant Shut-Off Valve -N541-, REMOVING AND INSTALLING: Installing

WARNING: This page is about a different car, the 2023 Volkswagen Arteon. However, it is still accessible from the selected car via links, so may be relevant.

Install in reverse order of removal. Note the following.

NOTE:

Note the installation instructions for the seals -B-. Refer to REFRIGERANT CIRCUIT SEALS .

Check the routing of the refrigerant lines after securing them. The refrigerant lines must be placed within the respective brackets and must not touch any other components.

-- Replace the seals -B-. Refer to the Parts Information for the version.

-- Tighten the union nuts -E- all the way by hand.

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Secure the refrigerant line -F- to the coupling point on the right longitudinal member in the bracket on the plenum chamber bulkhead.

-- Tighten the union nuts -E- while counterholding on the Heater and A/C Unit Refrigerant Shut-Off Valve -N541- -D- and make sure the refrigerant lines are routed without tension.

NOTE:

Make sure when tightening the union nuts that the refrigerant lines are not tensioned.

Check the routing of the refrigerant lines after securing them. The refrigerant lines must be placed within the respective brackets and must not touch any other components.

CAUTION:

There is a risk of damaging the A/C compressor if the refrigerant circuit is empty.

- Never start the engine with the refrigerant circuit empty.

-- Charge the refrigerant circuit. Refer to REFRIGERANT CIRCUIT, CHARGING .

-- Perform the leak test on the closed line connections of the refrigerant circuit. Refer to LEAKS, FINDING .

-- Check the DTC memory and erase any displayed entries using the Vehicle Diagnostic Tester in the "Guided Fault Finding" function.

Tightening Specification

Refer to OVERVIEW - REFRIGERANT LINES, GTE
Refer to COOLANT PUMP/COOLANT THERMOSTAT .