Hi, I'm new and haven't been able to find this same problem on other threads. I have a 2006 SC. My blower fan works on settings 1,2,3 and turns off on 4. On settings 1,2 and 3 the fan is blowing on speed 4 full blast. I have checked the fuses and relays as well as replaced the resistor and the problem persists. Again when fan is off vents blow on 4, on setting 1 2 and 3 they still blow as if on 4, on 4 it turns off. Any help is appreciated ty!