Palo Alto Auto Repair

You hit the defog button, crank the heat, and somehow the glass still looks like frosted glass from the inside. Meanwhile, the car around you is getting warmer, but you are still squinting through haze. That icon on the climate panel can do a lot more than most people get out of it, once you know exactly how it is supposed to work. Why Your Windows Fog Up In The First Place Fog on the glass is just moisture in the air condensing on a cold surface. Your breath, wet jackets, rain on your shoes, and even a takeaway coffee all add humidity to the cabin. When that warm, moist air touches cold glass, it cools and drops water on the inside of the windows. It happens fastest on cool, damp days or when you have several people in the car. Recirculate mode makes it worse, because you are trapping moist air inside instead of bringing in drier air from outside. When we inspect climate control complaints, this is one of the most common patterns we see. What The Defogger ... read more