Mazda MAZDA3 2010–2013 — technical service bulletin
Bulletin 09-014-14-2880 · NHTSA communication 10098015 · issued Feb 25, 2014
Technical service bulletin
communication type
Structure
component
2010–2013
model years
4
vehicle entries
Official summary
Some vehicles may exhibit rust on the bottom of the rear door glass guide (a) from contact with the rear beltline molding (b). This is caused by a vibration while driving.
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.