is there a door to direct air flow not closing completely?
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2004 Hyundai Santa Fe Question: 2004 santé fe has cold air coming in at the floor on passengers side. heat is on
Answer #1cardocIII from Gillespie's Auto Service, March 17, 2014, 03:13Master
If there is you should find a lever to control it and it's operation would be noted in your owners manual. Does your SantaFe have a dual climate control system? Restrictions in the heater cores on some cars can result in some unequal heat distribution.
poss bad door actuator