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Removing and installing relay and fuse holder BSB - vehicles up to 05.2009 — AUDI

Removing and installing relay and fuse holder BSB - vehicles up to 05.2009 on Audi: 11 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.

11 steps

🧭 Before you start

Fits: Audi A3 (8P, 2003–2012)

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  • Mark assignment of electrical wiring at screw connections for re-installation.

📋 Procedure

  1. With ignition switched off, disconnect earth cable at battery .
  2. Press clips in direction of (arrow) and remove cover for engine compartment electronics box.
  3. Press both tabs in direction of (arrow) and remove cover for electronics box (engine compartment).
  4. Mark assignment of electrical wiring at screw connections for re-installation.
  5. Release retaining clip (2) and swivel wire retainer (1) to the side (arrow).
AUDI? Steps differ between engine variants — check this job against your exact car before you commit to it. Check my car — free →
  1. Unscrew nuts (3 ... 7) and pull electrical wires out of clamps.
  2. Remove bolt (arrow).
  3. Take relay and fuse holder BSB out of electronics box (engine compartment).
  4. Fit relay and fuse holder BSB onto electronics box (engine compartment). Tighten securing bolt (centre); at the same time connectors will slide on.
  5. Fit and secure electrical wiring to main fuse holder (electronics box in engine compartment) according to markings made earlier.
  6. Connect battery. Steps required .

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.