Removing and installing refrigerant shut-off valve 5N643 — VW

🧭 Before you start

Fits: platform code BE1

• Renewed: seals

Don't miss

• If the valve has been renewed, it must be programmed using .

📋 Procedure

1. Observe safety precautions Safety precautions when working on air conditioning systems.
2. Observe safety precautions when working in the vicinity of high-voltage components Safety precautions when working in the vicinity of high-voltage components.
3. Comply with notes Working on refrigerant circuit.
4. Observe the risk rating of the high-voltage system Electric drive00Risk category of the high-voltage system.
5. Using , initiate basic setting, then perform function "Charge refrigerant circuit". [Note: Always perform the basic setting "“Charge refrigerant circuit”" using the , to make sure that all valves of the refrigerant circuit are opened. This is the only way to extract the complete refrigerant from the circuit.The must not be disconnected from the vehicle during the entire extraction, evacuation and charging process.To prevent the intrusion of moisture, all components of the refrigerant circuit which have been opened must be sealed with suitable plugs.]

6. Extract refrigerant with air conditioning service station. Comply with notes .
7. Remove lower wheel housing liner at front right General body repairs, exterior66Wheel housing liner; Removing and installing front wheel housing liner.
8. Unscrew bolts (2) and (6).
9. Disconnect refrigerant lines (1) and (3) from refrigerant shut-off valve 5N643(5).
10. Separate connector (7).
11. Unscrew bolts (4).
12. Remove refrigerant shut-off valve 5N643(5).
13. Installation is carried out in the reverse order. When installing, note the following:
14. Renew seals .
15. Moisten with refrigerant oil to ease installation of refrigerant lines.
16. If the valve has been renewed, it must be programmed using .
17. Using , initiate basic setting, then perform function "Charge refrigerant circuit". [Note: Always perform the basic setting "“Charge refrigerant circuit”" using the , to make sure that all valves of the refrigerant circuit are opened. This is the only way to charge the complete circuit.The must not be disconnected from the vehicle during the entire extraction, evacuation and charging process.If the component has been renewed due to a mechanical defect (e.g. wear), purge the refrigerant circuit.]
18. Only start engine after refrigerant circuit has been assembled.
19. Only start engine when refrigerant circuits are charged.

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