Well today it was freezing out side so I used the heat in the jeep works great. last winter I noticed that the 3rd fan speed setting quit working and never replaced the part. So when I used the heat I jumped right the the 4th fan setting and all was good then started getting to hot so my gf moved it down to the third and it worked!!! All I did was replace the light that burned out with LEDs not sure what made it work again but who cares it works! Now the problem I ran across though is that when I used the heat on the third fan setting I get this really strong nasty smell that comes through the vents I have no clue what's causing it and why it only happens on the third fan setting. Smell is a hard thing to describe so I'm going to do my best. It smells sort of like those in door wacky roller coasters or fun houses, it's kind of dusty weird smell. Anyone else have this problem?