Mazda MAZDA3 2019–2022 — technical service bulletin
Bulletin 09-028-22 · NHTSA communication 10218731 · issued Aug 9, 2022
Technical service bulletin
communication type
Structure
component
2019–2022
model years
4
vehicle entries
Official summary
Some vehicles may exhibit the glass run channel of the front door interfering with the rear door garnish. This is caused by the front door glass run channel not being fixed strongly enough to the door for the following situations where the cycles of door operation may result in interference and lead to damage on the rear door garnish. - When the front door glass is closed, the glass run channel may be forced to move to the B pillar side. - During very hot weather, the glass run channel may expand to the B pillar side. To eliminate this concern, the design of the front door glass run channel ha
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.