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SIB 12 02 21: Turbo wastegate software update
Turbo wastegate software update on B46/B48 engines (2018–2020); BMW released a software update.
BMW service bulletin · NHTSA ID 10199293 · May 2021 · also written SI B12 02 21, B120221
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.
Service action: Inspection of the electronic wastegate actuator connector . A software error in the digital motor electronics (DME).
Details
| Bulletin number | SIB 12 02 21 Also written: SI B12 02 21, B120221, 12 02 21, SIB-12-02-21, SI B120221 |
|---|---|
| NHTSA ID | 10198900, 10199293 (revisions) |
| Document IDs filed | B120221 |
| Type | Service bulletin |
| Date | |
| Models | 530e, 530i |
| Model years | 2018–2020 |
| Chassis | G30 |
| Engines | B46/B48 |
| Component (NHTSA) | Diesel › Storage › Tank Assembly Electrical System Engine And Engine Cooling Equipment Equipment Adaptive/Mobility Fuel System |
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.