Re: need help please with defogger
You need to turn the fan to high and make sure the vent switch is pointed at the windshield icon. Closing the front vents would also force more air out the defroster vent. Finally, make sure your inside windshield is squeaky clean. I've also turned on the a/c at the same time on occasion, although I thought it comes on with the defroster (at least it does with my Audi).