Removing and installing control unit and hydraulic unit: VW Sharan II / SEAT Alhambra

🧭 Before you start

Fits: VW Sharan II / SEAT Alhambra (7N, 2010–)

• Opens: brake fluid

Don't miss

• Do not remove brake pedal depressorV.A.G 1869/2.
• Ensure no brake fluid gets onto contacts.
• Mark, unscrew and seal threaded holes of remaining brake lines (brake calipers).
• Before installing holder of ABS hydraulic unit N55 on bracket, spray rubber dampers with silicone lubricantD 007 000 A2.

📋 Procedure

1. Read out and note the existing control unit code.
2. If vehicle has a coded radio, note radio code or, if necessary, request it.
3. Remove engine cover panel.
4. Remove air hose and air filter housing 23Air filter; Removing and installing air filter housing.
5. Remove air hose and air filter housing 24Air filter; Removing and installing air filter housing.

6. Disconnect battery Electrical system27Battery; Disconnecting and reconnecting battery.
7. Remove battery Electrical system27Battery; Removing and installing battery.
8. Remove battery tray Electrical system27Battery; Removing and installing battery tray.
9. Use removal lever80 - 200 to unclip the binding clips.
10. Slide the two clips in (direction of arrow), and remove cover from electronics box in engine compartment.
11. Unbolt cable (1) for alternator from fuse holder.
12. Disconnect connector (3) for electromechanical steering.
13. Unbolt earth cable of electromechanical steering from earth point.
14. Open cable duct (arrows), remove the two wiring harnesses, and lay them to one side.
15. Remove cable duct from console.
16. Press down retainer catch (arrow A).
17. Release electrical connector (arrow B).
18. Pull off connector (1).
19. Apply brake pedal depressorV.A.G 1869/2.
20. Connect hose of bleeder bottle (1) to bleeder valve of front left brake caliper.
21. Open bleeder valve.
22. Connect hose of bleeder bottle (1) to bleeder valve of rear left brake caliper.
23. Open bleeder valve.
24. Depress brake pedal at least 60 mm using brake pedal depressorV.A.G 1869/2.
25. Close front left and rear left bleeder valves.
26. Do not remove brake pedal depressorV.A.G 1869/2.
27. Place sufficient lint-free cloths under the ABS hydraulic unit N55. [Note: Ensure no brake fluid gets onto contacts.]
28. First identify both brake lines from brake master cylinder and then remove.
29. Immediately seal threaded holes with seal plugs from repair set with Part No. 1H0 698 311 A.
30. Mark, unscrew and seal threaded holes of remaining brake lines (brake calipers).
31. Fit dust caps of bleeder valves onto brake lines.
32. Pull hydraulic unit together with control unit upwards out of dampers (arrow). [Note: Remove sealing plugs from new hydraulic unit only when the corresponding brake line is going to be fitted.If sealing plugs are removed too early from the hydraulic unit, brake fluid can escape, and it can then no longer be guaranteed that the unit can be sufficiently filled and bled.When installing the hydraulic unit, ensure that the rubber dampers are not pressed out of bracket.]
33. Before installing holder of ABS hydraulic unit N55 on bracket, spray rubber dampers with silicone lubricantD 007 000 A2.
34. Using assembly toolV.A.G 1410/8, carefully fit brake lines.
35. Remove brake pedal depressorV.A.G 1869/2.
36. Bleed brake system .
37. Code radio.
38. Code ABS control unit J104 using .

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