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SIB 33 01 26: Axle humming noise
Axle humming noise on BMW F39/U10/U11 models (2023–2024); BMW gives an inspection and repair procedure.
BMW service bulletin · NHTSA ID 11030056 · Mar 2026 · also written SI B33 01 26, B330126
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.
1. Noise complaint: Humming or clicking type noise in the speed range of 15 – 65 mph can be heard from the rear axle. Seeattached video “V33 01 26 Humming” and “V33 02 26 Clicking” The noise may be amplified depending on road speed. Or 2.
Details
| Bulletin number | SIB 33 01 26 Also written: SI B33 01 26, B330126, 33 01 26, SIB-33-01-26, SI B330126 |
|---|---|
| NHTSA ID | 11028922, 11030056 (revisions) |
| Document IDs filed | B330126 |
| Type | Service bulletin |
| Date | (first filed Feb 2026) |
| Models | X1, X2 |
| Model years | 2023–2024 |
| Chassis | F39, U10, U11 |
| Engines | B46/B48 |
| Component (NHTSA) | Suspension Wheels |
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.