twhite435 Posted December 9, 2019 Share Posted December 9, 2019 We have a 2010 RX350. It is winter here in Utah so a heater is a must. The driver side works fine, but the passenger side blows cold. I am assuming it is an issue with the blend door? Is there any other possible issues it could be? Where exactly is that blend door that I need to inspect? Quote Link to comment Share on other sites More sharing options...
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