defrost option forces outside air
if your recirc is changing from inside to outside automatically
but not in defrost mode, choose recirc but then hold the button
down for a few seconds, that should make it stay on recirc
and stop it deciding for you (this works on 2 of my toyotas)
if I just choose recirc quickly... system often will change on me in a few
minutes and go back to outside air to reduce internal humidity
if your recirc is changing from inside to outside automatically
but not in defrost mode, choose recirc but then hold the button
down for a few seconds, that should make it stay on recirc
and stop it deciding for you (this works on 2 of my toyotas)
if I just choose recirc quickly... system often will change on me in a few
minutes and go back to outside air to reduce internal humidity
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