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SIB 17 01 21: Engine cracking
Engine cracking on BMW G20/E90/E92/E93 and other models (2012–2021); BMW explains the cause and the approved repair.
BMW service bulletin · NHTSA ID 10212788 · Apr 2022 · also written SI B17 01 21, B170121
What it covers
A service bulletin tells BMW technicians how to diagnose or fix a known issue. It is not a recall: a repair under a bulletin is normally paid by the owner unless the car is still under warranty or a warranty extension applies.
The quick disconnect coupling on the cylinder head coolant vent line could break at the cylinder head. This would lead to loss of coolant from the engine.
Details
| Bulletin number | SIB 17 01 21 Also written: SI B17 01 21, B170121, 17 01 21, SIB-17-01-21, SI B170121 |
|---|---|
| NHTSA ID | 10214256, 10212788 (revisions) |
| Document IDs filed | B170121 |
| Type | Service bulletin |
| Date | (first filed Feb 2022) |
| Models | 228i, 230i, 320i, 328d, 328i, 330e, 330i, 335i, 340i, 428i, 430i, 435i, 440i, 5 Series Gran Turismo, 530e, 530i, 540d, 540i, 550i, 640i, 740e, 740i, 740LE, 740LI, ActiveHybrid 3, M2, M235i, M240i, M3, M4, X1, X1 SAV, X2, X3, X4, X5, X6 |
| Model years | 2012–2021 |
| Chassis | G20, E90, E92, E93, F07, F22, F23, F30, F31, F32, F33, F34, F36, G01, G11, G12, G30, G31, G32, E60, F06, F10, F12, F13, F15, F16, F25, F26, F39, F48, F80, F82, F83, F87 |
| Engines | B46/B48, B47, B57, B58, N20, N47, N52, N55, N57, N62, N63, S55 |
| Component (NHTSA) | Engine And Engine Cooling Fuel System Gasoline |
Model, year and engine coverage comes from NHTSA's records. Not every car in this range is affected; the official document lists the exact production dates and conditions.
More for these cars
E90 repair costs F10 repair costs F15 repair costs F25 repair costs F30 repair costs F32 repair costs G01 repair costs G20 repair costs G30 repair costs All B46/B48 bulletins All B58 bulletins All N20 bulletins All N55 bulletins All S55 bulletins
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Before you pay: check your VIN for recalls
Some failures are covered by a safety recall or a warranty extension. Our free recall check lists NHTSA recalls for your car's model and year.
Source: NHTSA Manufacturer Communications (public data). BimmerBench is not affiliated with BMW or NHTSA. The title and description above are our own plain-English summary; the full bulletin is BMW's document, linked above.