If the A/C system in your fourth generation (2013, 2014, 2015, 2016 and maybe also the 2017 model year) Toyota RAV4 hasn’t been working as well recently or the air coming out of the vents smells a bit musty, you probably need to clean or change the cabin air filter element in the HVAC blower motor housing. Take a look at my DIY tutorial for the procedure (including the replacement part numbers) by clicking on the text link or thumbnail image below.
2013-2016 Toyota RAV4 Cabin Air Filter Replacement Guide
