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Guys:
My IS300's aircondition is acting weir. It seems that every time when I start the car, the air conditionig goes to recirculating mode. If I switch to air intake mode while I am driving, it would still change to recirculating mode all by itself while I am driving after 10-20 minutes. Is this normal? Help!!!

 

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from what i understand this is pretty normal provided that you have it on automatic climate control. the air system changes the source of air to 1)make the cabin more comfortable quicker and 2)make less of an impact on the power of the car. for this reason it will often default to recirculate air when the set temperature is low enough as compared to the outside. do you have the setpoint very low?
 
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