Mazda CX-3 2017–2021 — technical service bulletin

Bulletin SA-033-21 · NHTSA communication 10194782 · issued May 11, 2021

Technical service bulletin

communication type

Power Train

component

2017–2021

model years

vehicle entries

Official summary

The rear differential case could develop a crack in the case, as shown below. NOTE: This could affect new vehicles just delivered to the dealer as well as customer vehicles.

Vehicles covered

2017 Mazda CX-3
2018 Mazda CX-3
2019 Mazda CX-3
2020 Mazda CX-3
2021 Mazda CX-3
2020 Mazda CX-30
2021 Mazda CX-30
2017 Mazda CX-5
2018 Mazda CX-5
2019 Mazda CX-5
2020 Mazda CX-5
2021 Mazda CX-5
2017 Mazda CX-9
2018 Mazda CX-9
2019 Mazda CX-9
2020 Mazda CX-9
2021 Mazda CX-9
2021 Mazda MAZDA3

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.