TorqFix

Removing ABS control unit J104 and ABS hydraulic unit N55: VW Sharan II / SEAT Alhambra

Step-by-step removing ABS control unit J104 and ABS hydraulic unit N55 for the VW Sharan II / SEAT Alhambra: 22 steps.

Workshop procedure for VW — the exact step sequence and torque figures, straight from real workshop data.

22 steps

🧭 Before you start

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

Don't miss

  • Do not bend the brake lines in the area of the ABS hydraulic unit N55 — Read out and make a note of the code of ABS control unit J104.
  • Do not remove brake pedal depressorV.A.G 1869/2.
  • Mark and unscrew brake lines (1) to (4).

📋 Procedure

  1. ⚠ Do not bend the brake lines in the area of the ABS hydraulic unit N55 — Read out and make a note of the code of ABS control unit J104.
  2. Disconnect battery Electrical system27.
  3. Remove air filter housing 24Fuel mixture, electronic injection, gas.
  4. Remove battery and battery tray Electrical system27.
  5. Open cable guide, take out the two wiring harnesses and place on one side.
VW? Steps differ between engine variants — check this job against your exact car before you commit to it. Check my car — free →
  1. Remove cable guide from console.
  2. Press locking slide downwards in direction of (arrow).
  3. Release connector from control unit (in direction of arrow) and pull off.
  4. Apply brake pedal depressorV.A.G 1869/2.
  5. Connect bleed bottle bleed hose (1) to bleed valve of front left brake caliper.
  6. Open bleed valve.
  7. Connect bleed hose of bleed bottle (1) to bleed valve of rear left brake caliper.
  8. Open bleed valve.
  9. Depress brake pedal at least 60mm using brake pedal depressorV.A.G 1869/2.
  10. Close front left and rear left bleeder valve.
  11. Do not remove brake pedal depressorV.A.G 1869/2.
  12. Place sufficient lint-free cloths under the ABS hydraulic unit N55.
  13. First identify the two brake master cylinder brake lines (A) and (B) and unscrew from ABS hydraulic unit N55.
  14. Immediately seal brake lines and threaded holes with sealing plugs1H0 698 311 A.
  15. Mark and unscrew brake lines (1) to (4).
  16. Immediately seal brake lines and threaded holes with sealing plugs1H0 698 311 A.
  17. Pull hydraulic unit together with control unit in (direction of arrow) upwards out of brackets.

Other VW procedures

Who makes these pages, and how

TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.

The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.

Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.

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Workshop data on this page last updated 20 Sep 2026.