Mazda CX-3 2013–2021 — technical service bulletin
Bulletin 01-008-26 · NHTSA communication 11032003 · issued May 1, 2026
Technical service bulletin
communication type
Power Train
component
2013–2021
model years
40
vehicle entries
Official summary
This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted in Red. 01-008/23 06/05/23 Some vehicles may exhibit rattling noises from the engine compartment and oil leakage from the drive belt auto tensioner. This may be caused by insufficient sealing at the drive belt auto tensioner damper when the auto tensioner fully operates under both high ambient temperature and high load conditions. To eliminate this concern, the shape of the drive belt auto tensioner damper has been changed. REPAIR PROCEDURE If the tensioner is found to be "No Good" after completing t
Vehicles covered
- 2016 Mazda CX-3
- 2017 Mazda CX-3
- 2018 Mazda CX-3
- 2019 Mazda CX-3
- 2020 Mazda CX-3
- 2020 Mazda CX-30
- 2021 Mazda CX-30
- 2013 Mazda CX-5
- 2014 Mazda CX-5
- 2015 Mazda CX-5
- 2016 Mazda CX-5
- 2017 Mazda CX-5
- 2018 Mazda CX-5
- 2019 Mazda CX-5
- 2020 Mazda CX-5
- 2016 Mazda CX-9
- 2017 Mazda CX-9
- 2018 Mazda CX-9
- 2019 Mazda CX-9
- 2020 Mazda CX-9
- 2014 Mazda MAZDA3
- 2015 Mazda MAZDA3
- 2016 Mazda MAZDA3
- 2017 Mazda MAZDA3
- 2018 Mazda MAZDA3
- 2019 Mazda MAZDA3
- 2020 Mazda MAZDA3
- 2021 Mazda MAZDA3
- 2014 Mazda MAZDA6
- 2015 Mazda MAZDA6
- 2016 Mazda MAZDA6
- 2017 Mazda MAZDA6
- 2018 Mazda MAZDA6
- 2019 Mazda MAZDA6
- 2020 Mazda MAZDA6
- 2016 Mazda MX-5
- 2017 Mazda MX-5
- 2018 Mazda MX-5
- 2019 Mazda MX-5
- 2020 Mazda MX-5
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.