Removing and installing control unit for front display and information control panel J523, MMI basic — AUDI
Removing and installing control unit for front display and information control panel J523, MMI basic on Audi: 11 steps.
Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: Audi A5 (8T, 2007–2016)
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- Insert two radio release tools T10057 into slots on control unit for front display and information control panel J523 until they engage. Pointed ends of grips must face outwards.
📋 Procedure
- Switch off all electrical equipment.
- Remove ignition key.
- When renewing control unit, select "“Replacement”" function for appropriate control unit in "“Guided Fault Finding”".
- Open glove box.
- Insert two radio release tools T10057 into slots on control unit for front display and information control panel J523 until they engage. Pointed ends of grips must face outwards.
- Pull control unit for front display and information control panel J523 out of mounting frame.
- Pull out radio release tool T10057 by pressing retaining tabs on control unit for front display and information control panel J523.
- Release and unplug connectors on control unit for front display and information control panel J523.
- Fit protective cap for cable connectorVAS 6223/9(1) onto MOST bus connector (2).
- Plug in connectors.
- Slide control unit for front display and information control panel J523 into mounting frame until it engages.
Other AUDI procedures
- 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
- Removing and installing fuel gauge sender 2 G169 - A5 from model year 2012 onwards, A4 from model year 2013 onwards (vehicles with four-wheel drive)
- Removing and installing ABS control unit J104 and ABS hydraulic unit N55, vehicles with TDI engine
- Checking fuel system pressurisation pump G6 - TFSI vehicles
- Checking activation of exhaust gas recirculation valve N18
- Checking activation of secondary air pump relay – Audi A4 B5
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.