If the air conditioning system in your 2nd generation 2016, 2017, 2018, 2019, 2020 and 2021 Mazda CX-9 SUV hasn’t been working well recently or the air coming out of the vents smells a bit musty or moldy, you probably need to clean or change the A/C cabin air filter in the HVAC blower motor housing. Check out the DIY directions for the procedure (with the compatible replacement part numbers) by clicking on the text link or thumbnail image below.
2016-2021 Mazda CX-9 Cabin Air Filter Replacement Guide
