Removing and installing all-wheel drive control unit J492, generation IV — VW

🧭 Before you start

Fits: VW Passat B7 saloon (362, 2010–2014), VW Passat B7 Variant (365, 2010–2014), VW CC (358, 2012–2017)

Don't miss

• Valve seals have different inner diameters.
• The cover fits in only one position.
• The valve fits only in one position.

📋 Procedure

1. Switch off ignition.
2. Separate connectors (1) and (2) of control unit on top.
3. Place drip tray under final drive.
4. Remove bolts (arrows).
5. Carefully remove control unit (A).

6. If necessary, remove cover from Haldex coupling housing, holding valve (arrow) securely.
7. Cover coupling opening control valve N373(arrow) with a cloth, grasp valve body with pliers and pull it out. [Note: Valve seals have different inner diameters.]
8. First moisten seal (1) with Haldex oil and set coupling opening control valve N373.
9. Then seals (2), (3) and (4).
10. Press centring lips (Qty. 4) of seal (4) into groove.
11. Set new cover (2) on control unit (1). [Note: The cover fits in only one position.]
12. Insert coupling opening control valve N373(3) into control unit (1). [Note: The valve fits only in one position.]
13. Carefully set control unit (A) in place and tighten bolts (arrows) to specified torque .
14. Check oil level in Haldex coupling .

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