Running faucet sound

I’ve owned a 2020 crewmax for about 6 months now. Sometimes when the truck is off ( regardless of engine temperature) you can hear a faint sounds under the hood that sounds like running water. If you pop the hood you can feel fluid moving through what I believe is a coolant line. Truck doesn’t have excess smoke from exhaust, coolant is clean/full, and engine seems to run a a good temperature when running. Hasn’t been an issue yet, was just curious if this is normal.

 

What tube can you see fluid moving in? I don’t recall any clear tubes under the hood

 

That’s where I tracked the sounds down to, and you can feel it flowing when you put your hand on it

 

Tracked it down to what?

 

Coolant hose

 

The water pump is belt driven. There’s no way coolant is moving through the system with the engine off.

 

Maybe there is air in the coolant system from a prior coolant change. May need to burp the system, google "burb coolant system" and you will find how to to that.