Affected Component: EQUIPMENT

Date Published
JAN 26, 2021
TSB Document
  • Sorry, the NHTSA has not posted this TSB document yet.

You can still get the detailed info from Mazda for this TSB. Call your local Mazda dealer's service department & ask for a copy of TSB# 07-001-21-3775.

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.