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SIB 34 06 21: Brakes software update
Brakes software update on BMW G20/G21/G22/G23 and other models (2019–2021); BMW released a software update.
BMW service bulletin · NHTSA ID 10199294 · May 2021 · also written SI B34 06 21, B340621
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: PROGRAM THE DYNAMIC STABILITY CONTROL (DSC) UNIT: Software in the DSC unit could cause a reduction of brake regeneration for the next 40 drive (key) cycles.
Details
| Bulletin number | SIB 34 06 21 Also written: SI B34 06 21, B340621, 34 06 21, SIB-34-06-21, SI B340621 |
|---|---|
| NHTSA ID | 10198901, 10199294 (revisions) |
| Document IDs filed | B340621 |
| Type | Service bulletin |
| Date | |
| Models | 330e, 330i, 430i, M340i, M440i |
| Model years | 2019–2021 |
| Chassis | G20, G21, G22, G23, G26, F30, F34 |
| Engines | B46/B48, B58 |
| Component (NHTSA) | Electrical System › Software Electronic Stability Control › Automatic (Asc) |
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
F30 repair costs G20 repair costs All B46/B48 bulletins All B58 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.