BMW X1 2023–2024 — technical service bulletin
Bulletin B330126 · NHTSA communication 11028922 · issued Feb 18, 2026
Technical service bulletin
communication type
Suspension
component
2023–2024
model years
4
vehicle entries
Official summary
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. Fault memory entry: Customer has Dynamic Stability Control malfunction indicator lamp and/or related Check Control Message. The following fault codes are found in the Integrated Brake module fault memory: 4809B7: Wheel speed sensor - rear left - tooth missing 4809C2: Wheel speed sensor - rear right - tooth missing 480AB4: Wheel speed sensor - rear right – noi
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.