Hi, My 04 Accord LX with a V6 has the built in navigation and dual climate controls etc. All of the sudden today it only pumps out hot air from the vents. Even when the climate control is turned turned off and driving on the freeway hot air comes out. Any ideas?

 

Run the HVAC codes and see if anything comes back.

IF not, I'd look at the heater control valve/cable/motor and see if there is an issue there