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Q: No ac on passenger side

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Fully charged ac only blows cool on driver side. By the way it is not dual climate control.

My car has 100000 miles.
My car has an automatic transmission.

This is likely a vent blend door issue. Inside the vents in your car are small vent doors that are operated by small actuators with small plastic gears that often times break. When this happens they can easily become stuck open or closed resulting in the condition you describe. I would recommend having an expert from YourMechanic come to your home to diagnose and repair.

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