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SIB 12 21 17: Engine rough running
Engine rough running on BMW F39/F48 models (2016–2020); BMW gives an adjustment procedure.
BMW service bulletin · NHTSA ID 10176362 · May 2020 · also written SI B12 21 17, B122117
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.
ROUGH RUNNING IMMEDIATELY AFTER A COLD START: Immediately after a cold start the engine may run roughly during the catalyst heating period.
Details
| Bulletin number | SIB 12 21 17 Also written: SI B12 21 17, B122117, 12 21 17, SIB-12-21-17, SI B122117 |
|---|---|
| NHTSA ID | 10176362 |
| Document IDs filed | B122117 |
| Type | Service bulletin |
| Date | |
| Models | X1, X1 SAV, X2 |
| Model years | 2016–2020 |
| Chassis | F39, F48 |
| Engines | B46/B48 |
| Component (NHTSA) | Electrical System Exterior Lighting |
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.
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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.