My ac makes a loud contant noise, this happens with just the fan and with the heat. I have not used it since it started. I can not get an appt with the dealership until saturday. I called them but they were no help, they need to look at it.
It makes noise when the A/C button is off and it's not set on defrost (which turns the A/C on regardless of what the A/C switch is set to)? Probably the fan motor or something (mouse) crawled into the fan.
Yeah i had that happen on my car also, got it fixed. its the little fan under youre glove compartment that is making that sound. Its really annoying. Not to expensive to fix tho. Might be under warranty if youre car is still new.