Mazda 626 2001–2025 — technical service bulletin
Bulletin 07-004-25 · NHTSA communication 11017699 · issued Apr 25, 2025
Technical service bulletin
communication type
Unknown OR Other
component
2001–2025
model years
60
vehicle entries
Official summary
A musty/mildew type odor may come from the vents when the air conditioning (A/C) system is operating. It is most noticeable when the A/C is first turned ON. This odor is the result of mold growth in the A/C evaporator/cooling unit which is caused by condensation, dust, and pollen within the cooling unit. This condition is usually worse during high humidity conditions. “Mazda Air Cooling Coil Coating” is available to encapsulate the mold to reduce odors. If the product is properly applied, it can effectively reduce the musty/mildew odor for up to three years.
Vehicles covered
- 2001 Mazda 626
- 2002 Mazda 626
- 2003 Mazda 626
- 2016 Mazda CX-3
- 2017 Mazda CX-3
- 2018 Mazda CX-3
- 2019 Mazda CX-3
- 2020 Mazda CX-3
- 2021 Mazda CX-3
- 2020 Mazda CX-30
- 2021 Mazda CX-30
- 2022 Mazda CX-30
- 2023 Mazda CX-30
- 2024 Mazda CX-30
- 2025 Mazda CX-30
- 2013 Mazda CX-5
- 2014 Mazda CX-5
- 2015 Mazda CX-5
- 2016 Mazda CX-5
- 2017 Mazda CX-5
- 2018 Mazda CX-5
- 2019 Mazda CX-5
- 2020 Mazda CX-5
- 2021 Mazda CX-5
- 2022 Mazda CX-5
- 2023 Mazda CX-5
- 2024 Mazda CX-5
- 2025 Mazda CX-5
- 2007 Mazda CX-7
- 2008 Mazda CX-7
- 2009 Mazda CX-7
- 2010 Mazda CX-7
- 2011 Mazda CX-7
- 2012 Mazda CX-7
- 2007 Mazda CX-9
- 2008 Mazda CX-9
- 2009 Mazda CX-9
- 2010 Mazda CX-9
- 2011 Mazda CX-9
- 2012 Mazda CX-9
- 2013 Mazda CX-9
- 2014 Mazda CX-9
- 2015 Mazda CX-9
- 2016 Mazda CX-9
- 2017 Mazda CX-9
- 2018 Mazda CX-9
- 2019 Mazda CX-9
- 2020 Mazda CX-9
- 2021 Mazda CX-9
- 2022 Mazda CX-9
- 2023 Mazda CX-9
- 2011 Mazda MAZDA2
- 2012 Mazda MAZDA2
- 2013 Mazda MAZDA2
- 2014 Mazda MAZDA2
- 2004 Mazda MAZDA3
- 2005 Mazda MAZDA3
- 2006 Mazda MAZDA3
- 2007 Mazda MAZDA3
- 2008 Mazda MAZDA3
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.