The light will usually stay off about 3-5 days after reset. Even then, I hate staring at the stupid light every day...it's very obvious and even embarrassing sometimes when I have guests in my "cool" car. My next stop after this is the local Ford dealer (I have a heater blower resistor recall that needs done anyway). I'm afraid it's gonna be the same story all over again though. 17 and little money is not good.