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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.

Thanks

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  • Welcome to Motor Vehicle Maintenance & Repair!
    – Pᴀᴜʟsᴛᴇʀ2 ♦
    Mar 26, 2019 at 19:54
  • I would suggest a quality carbon filter to the incoming air....
    – Solar Mike
    Mar 26, 2019 at 20:51
  • @SolarMike Do you think that would eliminate the fumes entirely? Or would it only filter out some? If so, it wouldn't be worth spending the money. I react to the littlest bit of fumes :(
    – chipmunk226
    Mar 29, 2019 at 19:38
  • Then you probably need to be in a sealed room not in a car...
    – Solar Mike
    Mar 29, 2019 at 19:40

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