BMW 228I 2016–2021 — technical service bulletin

Bulletin B650121 · NHTSA communication 10188953 · issued Feb 1, 2021

Technical service bulletin

communication type

Equipment

component

2016–2021

model years

vehicle entries

Official summary

SPORADIC FAILURE OR CRACKING NOISE IN BASS SPEAKERS: No Bass or a cracking noise can be heard from the bass speakers.

Vehicles covered

2020 BMW 228I
2021 BMW 228I
2021 BMW 330E
2019 BMW 330I
2020 BMW 330I
2021 BMW 330I
2021 BMW 430I
2018 BMW 530E
2019 BMW 530E
2020 BMW 530E
2021 BMW 530E
2017 BMW 530I
2018 BMW 530I
2019 BMW 530I
2020 BMW 530I
2021 BMW 530I
2018 BMW 540D
2019 BMW 540D
2020 BMW 540D
2017 BMW 540I
2018 BMW 540I
2019 BMW 540I
2020 BMW 540I
2021 BMW 540I
2018 BMW 640I
2019 BMW 640I
2020 BMW 640I
2017 BMW 740E
2018 BMW 740E
2019 BMW 740E
2017 BMW 740I
2018 BMW 740I
2019 BMW 740I
2020 BMW 740I
2021 BMW 740I
2016 BMW 740LI
2017 BMW 740LI
2020 BMW 745E
2018 BMW 750I
2019 BMW 750I
2016 BMW 750LI
2017 BMW 750LI
2018 BMW 750LI
2019 BMW 750LI
2021 BMW 750LI
2020 BMW 840I
2021 BMW 840I
2018 BMW B7 Alpina
2019 BMW B7 Alpina
2020 BMW B7 Alpina
2021 BMW B7 Alpina
2018 BMW C 400 X
2017 BMW F800 R
2021 BMW F 850 GS Adventure
2020 BMW M235I
2021 BMW M235I
2020 BMW M340I
2021 BMW M340I
2021 BMW M440I
2018 BMW M5

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.