Not so mystery noise, solved!

I have a 2021 Tacoma Off Road i purchased just a month ago. The truck has less than 500 miles on it. The truck is also garage kept. Last night i went into the garage and heard something running . It sounded like a small motor. The noise emanated about mid way under the truck. I was continuous and to me sounded like the fuel pump. Nothing was on like the acc. button. this kept up until i went and started the truck and shut it off. After i did that the running noise stopped. I should mention the truck is keyless start. There are a few freaky incidents of keyless vehicles doing their own starting and running but i never heard of this. Is this a reported problem yet to Toyota? I am concerned if this happens again and overheats i could have a truck fire in my garage. So even if I report this to the dealer they can't fix something that is not a continuous problem. What should I do?

 

Emissions related evap motor running to do its self test. Note: keep the “help” out of the thread title for people who actually need help. Enjoy your thanksgiving

 

^^ THIS ^^

 

It's probably the evaporative system running a test making sure the fuel system has no leaks. It can run at random times.

 

please take help out of your title. when we see help on the main screen we think someone is stuck somewhere.

 

Normal and not a problem. Continue on with your Thanksgiving to remember.

 

Sorry about the title i never wrote on a forum before

 

You live and learn, welcome to TW!

 

There have been much worse first posts.

 

You might find info on it in that book in the glove box, but 'self test' is the answer.