Removing and installing refrigerant shut-off valve 1 for hybrid battery N516 — AUDI

🧭 Before you start

Fits: Audi A6/A7 C7 (4G, 2011–2018); platform code 4X

• Opens: refrigerant (A/C)
• Renewed: o-rings
• Also covered elsewhere: Electronic parts catalogue

Don't miss

• Counterhold shut-off valve 1 (item 1) and unscrew union nut (5).
• Observe fitting instructions for O-rings .After attaching, check routing of refrigerant lines. They must be inserted in brackets provided and should not make contact with other components.
• When tightening the union nuts, make sure not to strain the refrigerant lines.

📋 Procedure

1. ⚠ Risk of fatal injury if high-voltage components are damaged.Observe the following when working in the vicinity of high-voltage components or wiring:It is not permitted to use cutting or forming tools, other sharp-edged tools or heat sources such as welding, brazing, soldering, hot air or thermal bonding equipment.Before starting work, visually inspect the high-voltage components in the areas involved.Before working in the engine compartment, visually inspect the power and control electronics for electric driveJX1, electric drive motor V141, air conditioner compressor V470 and high-voltage wiring. Before working on the vehicle underbody, visually inspect the high-voltage wiring and covers. Before working on the rear section of the vehicle, visually inspect the high-voltage wiring and the electro-box with the maintenance connector for high-voltage system TW . Visually inspect all potential equalisation lines.Check the following when making the visual inspection:There must be no external damage on any component. The insulation of the high-voltage wiring and potential equalisation lines must not be damaged. There must be no unusual deformation of the high-voltage wiring. All high-voltage components must be identified by a red warning sticker. — Switch off ignition.
2. Discharge refrigerant circuit Air conditioner with refrigerant R134a87Refrigerant circuit.
3. Remove refrigerant line from refrigerant shut-off valve 1 for hybrid battery .
4. Unplug electrical connector (3) and remove from bracket (2).
5. Counterhold shut-off valve 1 (item 1) and unscrew union nut (5).

6. Pull refrigerant shut-off valve 1 for hybrid battery N516 off refrigerant line (4).
7. Seal off open lines and connections with clean plugs from engine bung setVAS 6122. [Note: Observe fitting instructions for O-rings .After attaching, check routing of refrigerant lines. They must be inserted in brackets provided and should not make contact with other components.]
8. Renew O-rings; for correct version, refer to Electronic parts catalogue.
9. Screw in union nut by hand until it makes contact.
10. Install refrigerant line at refrigerant shut-off valve 1 for hybrid battery .
11. Counterhold shut-off valve 1 (item 2) and tighten union nuts (1 and 3) fully. [Note: When tightening the union nuts, make sure not to strain the refrigerant lines.]
12. Evacuate and charge refrigerant circuit Air conditioner with refrigerant R134a87Refrigerant circuit.
13. Re-install remaining components (removed earlier).
14. Switch on ignition.
15. Interrogate event memory of operating unit (Climatronic control unit J255) and control unit for air conditioning compressor J842 and erase any faults displayed in "“Guided Fault Finding”" mode.
16. Start up air conditioner after charging refrigerant circuit . [Note: Also observe notes on starting up air conditioner after charging Air conditioner with refrigerant R134a87General notes on air conditioning systems.]

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