I am looking to find a way to have the recirculation always in the ON position for my 2018 Toyota Rav4 Hybrid Limited.
I understand it's unhealthy to leave the same air in your car but I don't commute that far and the alternative for me is far worse. The reason I need to keep recirc on is because I have developed a severe sensitivity to fumes, especially from diesel exhaust. It causes me to get weakness and tremors in my legs and arms, dizziness, blurred vision, migraine, and if exposed too long, I will get violently sick. Even brief exposure causes symptoms. I can sense when the recirc has automatically shut off because I will get a tingling in my tongue and my legs will start to feel weak first.
I have to drive on the highway to work and it's a major truck corridor. I used to have a Toyota Sienna and I could get by with just using the defrost with foot option to keep recirc on, but that does not work with the Rav4 to keep the windshield clear. I saw the mechanical solution here: A/C Air Recirculation , but would like to see if anyone could suggest an electrical one.