Checking heating plugs — VW
Checking heating plugs on VW: 4 steps, 2 torque figures, engines BAH, BNM, BPA, CCRA. What to remove, what to tighten and to how many Nm, what to check.
Workshop procedure for VW — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: platform codes 9A2, 9A4, 9A5, 9A1, 9A3, 9A6
🔩 Torque settings
Values can differ between engine variants — check the code stamped on your block.
| Torque | Fastener / step |
|---|---|
| 15 Nm (11 lb-ft) | Remove and install the heating plugs with the Wrench3320 |
| 18 Nm (13 lb-ft) | Remove and install glow plugs |
ℹ️ Always cross-check the exact figure against your vehicle's factory manual before final tightening — a wrong torque can damage the engine. These values are extracted from workshop data and may not cover every variant or revision.
📐 38 workshop diagrams for BAH
Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.
📋 Procedure
- Disconnect battery earth strap or upper connector (smaller) from HCU.
- Connect the Test probeVAG 1527B wire, using the Measurement auxiliary cable setVAG 1594C to the battery positive (+) terminal.
- Position the Test probeVAG 1527B on each heating plug, one-by-one.
- Remove and install glow plugs. Tightening torque: 18 Nm. — 18 Nm (13 lb-ft)
Ask TorqFix about your VW BAH — it answers with the exact sequence for that engine and the workshop drawing for each step. First question is free after a 20-second sign-up, no card.
Ask about your VW BAH — free → or sign up free to see the drawingsOther VW procedures
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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.