Connecting VAS 5051 vehicle diagnosis, testing and information system — VW
Connecting VAS 5051 vehicle diagnosis, testing and information system on VW: 15 steps. What to remove, in what order, and what to check after.
Workshop procedure for VW — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: VW Touareg I (7L, 2002–2010)
- Special tools named: VAS 5051, VAS 5051/3
Don't miss
- If displayed texts differ from those in procedure, user's manual for vehicle diagnosis, testing and information system VAS 5051.
📋 Procedure
- Pull on handbrake.
- Automatic gearbox: move selector lever to "“P”" or "“N”" position.
- Manual gearbox: selector lever in neutral.
- Open diagnosis connection cover (1) below left dash panel.
- With ignition switched off, connect VAS 5051 using adapter lead VAS 5051/3.
- Switch on ignition.
- Switch off all electrical consumers. [Note: If displayed texts differ from those in procedure, user's manual for vehicle diagnosis, testing and information system VAS 5051.]
- Press "“Go to”" key.
- Select "“Function/component selection”".
- Select "“Body”".
- Select "“Electrical system”".
- Select "“01 - On Board Diagnostic (OBD)”".
- Select "“Immobiliser”".
- Select "“Functions”".
- Select "“Replacement of Access/Start Control Module”"
Other VW procedures
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- Adjusting valve timing – VW Passat B5 · 83 torque figures
- Removing and installing camshafts – VW Passat B6 · 39 torque figures
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- Removing and installing dash panel insert KX2
- Removing and installing cigarette lighter U1
- Checking oil pressure and oil pressure switch for reduced oil pressure F378
- Removing and installing brake system pressure accumulator VX70
- Fitting locations overview - components not located in passenger compartment, Climatronic
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.