Mazda CX-3 2017–2020 — technical service bulletin

Bulletin SA-047-20b · NHTSA communication 10183666 · issued Nov 18, 2020

Technical service bulletin

communication type

Equipment Adaptive/mobility

component

2017–2020

model years

vehicle entries

Official summary

CRACKED REAR DIFFERENTIAL. 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
2020 Mazda CX-30
2017 Mazda CX-5
2018 Mazda CX-5
2019 Mazda CX-5
2020 Mazda CX-5
2017 Mazda CX-9
2018 Mazda CX-9
2019 Mazda CX-9
2020 Mazda CX-9

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.