Mazda CX-5 2016–2021 — technical service bulletin
Bulletin 09-009-21-3759a · NHTSA communication 10206004 · issued Dec 17, 2021
Technical service bulletin
communication type
Structure
component
2016–2021
model years
11
vehicle entries
Official summary
Rusty Panel at Bottom (Inner Side) of Doors: Some customers may complain about rust at the bottom (inner side) of the doors where the seaming welt is located. It is caused by mud/sand adhering to the side sill, which scratches the paint surface when the door is opened/closed. The mud/sand is most likely brought in by the driver and/or passenger when stepping in and out of the vehicle.
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.