Mazda MAZDA3 2019–2020 — technical service bulletin
Bulletin SA-018-21 · NHTSA communication 10188023 · issued Feb 25, 2021
Technical service bulletin
communication type
Structure
component
2019–2020
model years
2
vehicle entries
Official summary
Some customers or technicians (during PDI) may have concerns with the front doors sticking (especially on hot days) and/or poor appearance, fitment, alignment or gaps with the front and rear door sash molding. These concerns may be related to the door sash molding interference between the front and rear doors.
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.