The Best Ac Only Works When Driving Reddit 2024. So, now you know how your car’s air conditioning system works. Some of these components may fail which could be the reason.

So my climate control fan only works on the highest setting, so i changed the ac blower motor resistor and that. Some of these components may fail which could be the reason. My car might be ruining my ac blower motor resistor (1994 lexus es300).