Removing and installing anti-theft alarm sensor G578, version with 4 bolts — VW
Removing and installing anti-theft alarm sensor G578, version with 4 bolts on VW: 12 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: platform codes AU1, BX5
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- Danger of damage to component surfaces.When using leverage tools, mask visible areas of the component with commercially available adhesive tape. — Switch off ignition and all electrical consumers.
📋 Procedure
- ⚠ Danger of damage to component surfaces.When using leverage tools, mask visible areas of the component with commercially available adhesive tape. — Switch off ignition and all electrical consumers.
- Remove ignition key, if inserted.
- Remove front interior lightWX1.
- Using removal wedge3409, lever off cover (1) in vicinity of (arrows).
- Remove bolts (3).
- Remove roof module (2).
- Release connector and disconnect.
- Release retaining tabs in direction of arrows (A) and (B).
- Remove anti-theft alarm sensor G578(1) from roof module.
- Release retaining tabs in direction of arrows (A) and (B).
- Remove single sensor (1) from roof module.
- Test functionality.
Other VW procedures
- Removing engine · 41 torque figures
- Removing and installing camshaft – VW Golf Cabriolet · 47 torque figures
- Adjusting valve timing – VW Passat B5 · 83 torque figures
- Removing and installing camshafts – VW Passat B6 · 39 torque figures
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- Converting H4 headlights designed for driving on the left to driving on the right
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- Removing and installing tail light, saloon
- Removing and installing additional brake light bulb M25, hatchback
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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.