Recently, my A/C started blowing warm. I figure it was low on freon. However now, when I turn OFF the A/C blower, all of the lights (for temperature and which vent to blow air out of) are staying on. I don't recall the temperature lights to stay on after turning off the a/c. Is this correct? I plan on taking the car in to my mechanic, but wanted verification that this is normal. My wife actually drives the car more than I do, so I don't recall this as happening before. Thanks all!