TorqFix

Brake system — Connecting VAS 505x and selecting functions — AUDI

Brake system — Connecting VAS 505x and selecting functions on Audi: 13 steps. What to remove, in what order, and what to check after.

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

13 steps

🧭 Before you start

Fits: Audi A8 D3 (4E, 2002–2010)

  • Special tools named: VAS 5051

📋 Procedure

  1. ⚠ Test equipment must always be secured to the rear seat when road-testing the vehicle.While the vehicle is moving this equipment must be operated by a second person; NOT by the driver. — Attach the diagnosis cable connector VAS 5051/5a to the diagnosis connection.
  2. Switch on the tester (arrow).
  3. Switch on ignition.
  4. Press the Guided Fault Finding button on the display screen.
  5. Select the following:
AUDI? Steps differ between engine variants — check this job against your exact car before you commit to it. Check my car — free →
  1. Confirm the entered information.
  2. Press the Go to button and select the option "“Function/component selection”".
  3. Select "“Running gear”" on the display.
  4. Select "“Brake system”" on the display.
  5. Select "“01 - Self-diagnosis compatible systems ...”" on the display.
  6. Select "“Anti-lock brake system ...”" on the display.
  7. Select "“Function”" on the display.
  8. Select the function you require on the display.

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.

Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com

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Workshop data on this page last updated 20 Sep 2026.