Removing and installing refrigerant shut-off valve for heater and air conditioner unit N541 — VW

🧭 Before you start

Fits: VW Golf VII Variant (BA), VW Golf VII (5G, 2012–2020)

• Opens: refrigerant (A/C)
• Also covered elsewhere: Electronic Parts Catalogue

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• Loosen union nuts (E). Counterhold on N541(D) while doing so.
• Following attachment, check the routing of the refrigerant lines. They must be inserted in the retainers provided and not make contact with any other components.

📋 Procedure

1. Observe safety precautions Safety precautions when handling refrigerants.
2. Comply with notes Working on refrigerant circuit.
3. Observe safety precautions when working in the vicinity of high-voltage components Safety precautions when working in the vicinity of high-voltage components.
4. Observe the risk category of the high-voltage system 00Risk category of the high-voltage system.
5. Switch off ignition.

6. Drain refrigerant circuit.
7. Detach bracket (A) for solenoid valve 1N88 from plenum chamber bulkhead.
8. Detach heat shield (B) in area of N541(D) and of refrigerant line (F) (leading to connection on right longitudinal member) from plenum chamber bulkhead, and bend it back slightly.
9. Unscrew speed nuts (1) and (3).
10. Fold the heat shield (2) as far forwards as necessary (and possible) (arrow).
11. Disconnect connector (C) of N541(D).
12. Loosen union nuts (E). Counterhold on N541(D) while doing so.
13. Detach refrigerant line (F) (leading to connection on right longitudinal member) from retainer on plenum chamber bulkhead.
14. Remove shut-off valve N541(D). [Note: Following attachment, check the routing of the refrigerant lines. They must be inserted in the retainers provided and not make contact with any other components.]
15. Renew seals (B); for correct version refer to Electronic Parts Catalogue.
16. Screw on union nuts (E) to stop by hand.
17. Secure refrigerant line (F) (leading to connection on right longitudinal member) in retainer on plenum chamber bulkhead.
18. Tighten union nuts (E). Counterhold on N541(D) while doing so, and make sure that refrigerant lines are routed free of stress. [Note: When tightening the union nuts, make sure that the refrigerant lines remain free of stress.Following attachment, check the routing of the refrigerant lines. They must be inserted in the retainers provided and not make contact with any other components.]
19. Switch on ignition.
20. Read event memory of operating unit, Climatronic control unit J255, and clear any faults which may have been stored vehicle diagnostic tester in "“Guided fault finding”" mode.

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