Calibrating control unit for head-up display — AUDI
Calibrating control unit for head-up display 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.
🧭 Before you start
Fits: Audi Q7 (4M, 2015–)
- Special tools named: VAS 721
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- Vehicle must be standing on a smooth and level surface.
- Apply parking brake – the vehicle must not be moved while the calibration procedure is being performed.
📋 Procedure
- The control unit for head-up display must be calibrated in the following situations:
- Vehicle must be standing on a smooth and level surface.
- Apply parking brake – the vehicle must not be moved while the calibration procedure is being performed.
- Remove cover for control unit for head-up display General body repairs, interior70Dash panel; Exploded view - dash panel.
- Fold down and disengage sun visors on both sides and swivel round to side windows.
- Attach calibration board for head-up display VAS 721 003 to centre mountings (1, 2) for sun visors.
- Select Diagnosis mode and start this mode.
- Select Test plan tab.
- Select Own test then the following options one after the other:
- Start the program selected and follow the instructions on the display of the vehicle diagnostic tester.
- After completing calibration of control unit for head-up display, exit "“Calibration”", switch off ignition and unplug diagnostic connector.
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 toothed belt assembly 08.91 ä – Audi
- Testing a "two-wire bus system"
- Coding of operating and display unit with two displays
- Checking pump relay -J17 and actuation – Audi 1.8 AMK/BAM
- Checking accelerator pedal position sender -G79 and -G185
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.