Trick to control side mirror moisture..

Tuck/turn both mirrors into the truck as you would in a tight parking spot. I don't know why, but this works great for me.

In the Pacific NW we get tons of days with cool nights and regularly both of my mirrors are badly fogged up. For some reason, Toyota doesn't offer heated mirrors and I can never remember to wipe them off until I am merging onto the freeway.

The last two nights, the first one by luck, I tucked one of my mirrors into the cab. In the morning the tucked mirror was crystal clear while the other was completely fogged up.

 

Interesting. I wonder if I can make a simple cover for my mirrors on cold nights that I can just remove before I drive.

 

http://www.tacomaworld.com/forum/2nd-gen-tacomas/15958-el-cheapo-heated-mirrors.html

Nor sure if you have seen this..i did it last winter on my 2012 and my grandfathers 2011. by far one of the best mods Ive ever done..being in the NE im sure i use it a little more than you would but i love mine. deff recommend doing it. i use it all the time for those spring mornings with that moisture on them. gone by the time i get out of my development..