Mazda MAZDA3 2019–2023 — technical service bulletin
Bulletin 09-018-23 · NHTSA communication 10235417 · issued Apr 11, 2023
Technical service bulletin
communication type
Structure
component
2019–2023
model years
5
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.
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.