Question about 2012 Lexus RX 350 Base 4dr SUV 3.5L V6 6-speed Automatic
No heat on feet for passenger
Posted by Anonymous on
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Posted on Jan 02, 2017
You will more than likely need to replace the whole heater control unit in the dash. Thier like mini computers now and usually if one side goes down it means the whole unit is shot.
Posted on Dec 03, 2012
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Apr 03, 2017 | 2005 Chevrolet Cavalier Coupe
There are little doors under the dash that direct the air to either the vents (blows at your face), the defrost (blows at the windshield), or underneath (blow to your feet area) - these doors are controlled by what's called actuator/s and they are usually controlled by vacuum or cables - when the air won't change directions it can be either the vacuum switch, the vacuum line disconnected, cable disconnected or the actuator itself can be stuck or bad...
You also have a heater valve that allows the heated coolant to enter the passenger compartment into a heater core (small radiator to allow heat to transfer into the air when the blower blows air across the core) - this can also be vacuum controlled or cable controlled or electronically controlled - if it malfunctions then you may not get any heat into the passenger compartment - you will have to determine if the valve is not getting the signal to open or is bad and will not open - good luck :O)
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