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RecallGazette

Vehicle problems, recalls & safety intelligence

BMW 228I 2017–2023 — technical service bulletin

Bulletin B640422 · NHTSA communication 10250374 · issued Feb 16, 2024

Technical service bulletin
communication type
Electrical System
component
2017–2023
model years
50
vehicle entries

Official summary

An interference noise (groaning noise) can be heard from within the heating and air-conditioning unit in thecenter of the instrument panel. The groaning noise always occurs when either a ventilation flap, air stratification flap or the recirculated airflap moves to a different position. Due to the complex design of the heating and air-conditioning unit, the kinematics causing it (top or bottom,left or right) may not be able to be precisely located. Depending on the vehicle model, the number of servomotors (and the associated kinematics unit) varies.Various models use either 2 or 3 servomotors.

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.