Mazda CX-3 2021–2023 — technical service bulletin
Bulletin SA-023-22 · NHTSA communication 10210884 · issued Apr 26, 2022
Technical service bulletin
communication type
Engine and Engine Cooling
component
2021–2023
model years
9
vehicle entries
Official summary
A tapping/rattling noise may be noticed from the valve train area. This operating condition can occur on new vehicles which have been delivered to Mazda dealers (due to loading and unloading from transport trucks or customers moving their vehicles in and out of their garages to wash the vehicle, etc.). This condition may also occur if the engine is not allowed to warm up after multiple cold starts.
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.