Heat only comes from one vent on dash, the rest blow cold air?

[Incidental_Pizza]

It was cool enough Friday morning on my way to work that I wanted to turn the heater on. I figured out where the heat was, and was able to get some warm air coming through the vent, but the warm air was only trickling out of the 3rd vent (counting from the driver's side), while the other vents blew cool air that I assume was being brought in from the outside. Has anyone experienced this, or am I doing something wrong? 23 XLT SR, 2,000 miles.

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[Pioneer74]

If you don't have dual climate controls, which are set on two different temperatures, it sounds like a bad blend door. The dealer will have to fix it.

 

[Scorpio3d]

I have the Lariat with dual climate, and I have noticed that if no one is in the passenger seat, the climate does not come on on that side of the vehicle! I find this strange, but it is what it is!

 

[TaxmanHog]

Did you have the temperature dialed up high enough?
If not, the HVAC might have been cycling fresh air to moderate the levels.

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