Re: heater will not blow at feet, only blows out of...
There is an actautor that changes where the air comes out this arm may have fallen or broken off get down under the dash with a good light and check for connection you may have to disassemble the vent area to find this
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I believe you mean "BI-LEVEL" mode, which means it should blow air simultaneously out of the dashboard registers and the lower register. The Temperature of the air blowing out of both of them is regulated by the temperature preset.
Does the fan still blow when you move the switch to BI-LEVEL? If it does but the air comes out of the DEFROST registers, that means your diverter is not functioning correctly, most likely due to a vacuum leak under the dash. If the fan shuts off in BI-LEVEL mode but still operates in HEAT mode, your selector module is bad. If the fan shuts off in BI-LEVEL mode and in HEAT mode, either your engine coolant is not hot enough to provide heat (automatic function), or the temperature sensor for your climate control system has failed.
is it the button type or the knob type. knob type is a cable they can snap the plastic clips that hold them on. button type there is a rest sequence you need to do to reset the system but i cannot remember it off hand. think its hold down both switch ( buttons ) at same time then the display goes to two dashes and resets.
Start with checking coolant level, if low it will cause a no heat problem. If radiator coolant level is correct you might have a temperature door problem. The temerature door is located inside the HVAC module and is controlled by the temperature control knob on the dash board. The electric motor that moves the temp door may have failed.