RS6 (4F) BUH ancillary drive belt — AUDI
RS6 (4F) BUH ancillary drive belt on Audi: 28 steps, engines BUH. 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.
🧭 Before you start
Fits: platform code RS6
Don't miss
- At removal, mark the direction of rotation; when refitting ensure the drive belt rotates in the same direction
🔧 Engine codes this applies to
📋 Procedure
- Remove the front bumper cover
- Remove the cover
- Remove the bolt
- Note: Do not disconnect
- Remove the bolt
- Note: Do not disconnect
- Disconnect the electrical connector
- Note: Do not disconnect
- Disconnect the electrical connector
- Note: Do not disconnect
- Disconnect the electrical connector
- Remove the bolts
- Remove the cover
- Loosen the bolts
- Note: Do not remove
- Loosen the bolts
- Note: Do not remove
- Remove the nuts
- On both sides
- Disconnect the power steering oil cooler hose
- Secure to the vehicle
- Turn the special tool clockwise
- Torx:
- Turn the tensioner anti-clockwise
- Remove the ancillary drive belt
- Note: At removal, mark the direction of rotation; when refitting ensure the drive belt rotates in the same direction
Other AUDI procedures
- Checking oil pressure switch F1 – Audi A6 C6
- Installing oil return line with oil reservoir – Audi A6 C6 5.0
- Checking combination valves for secondary air system for correct operation and leakage
- Renewing oil seal for AC compressor drive – Audi R8
- Removing and installing engine control units J623 / J624
- Removing and installing toothed belt – Audi · 56 torque figures
- Removing engine – Audi A8 D3 · 41 torque figures
- Removing camshaft timing chain from camshafts – Audi A6/A7 C7 · 38 torque figures
- Installing engine – Audi A8 D4 · 36 torque figures
- Removing and installing camshaft timing chain · 29 torque figures
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
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.