Did my fuel pump run all night?!

This morning I went out to the garage to go to work. Before opening the garage door I heard a continuous humming sound coming from the fuel tank area. It sounded like the fuel pump, but I guess it could be some kind of smog pump (who knows). It turned off as soon as I turned the key one click towards the on position.
So, what the hell was the noise, and was it going on all night?

 

No

 

Evap purge, someone literally asked about it a few hours ago. Also in the manual.

http://www.tacomaworld.com/forum/2n...ns-sound-something-running-near-gas-tank.html

 

Neat, thanks. So I guess it just turned on because it knew I would be going to work soon.

Seriously though, does anyone know if it's normal for some kind of pump to kick on 12 hours or so after the truck was last used?

 

Awesome! Thanks. It freaked me out a little, because my old 2012 never did it in the 2 years I had it. What is this owner's "manual" you speak of. Ha-ha.

 

LOL

Mine did it once also and it freaked me out. I was just going to ask the dealer about it the next time I was in there.

I put my owner's manual in the bathroom. That way I'll read it once in a while.

 

Every new owner flips the F*** out the first time they hear this, if the Taco is garage kept (unless you live in a very quiet neighborhood)! My brother and dad both have early 2nd gens and theirs don't do it, so that made it worse thinking something was wrong!

It's normal as others stated

 

^This. I hear mine all the time at night in the wilderness when camping in my truck tent. A few times when it's totally quite it's freaked my dogs out though!