2006 Scion xB Running too warm

Theres a small plastic bottle called a "catch tank" or coolant overflow resivior" you will see a small rubber hose running from the top of your radiator near the cap you can follow it down it will lead you to the coolant tank. On the side of the tank you will see upper and lower level markings which indicate how much coolant is needed or if any is needed at all. If it's at the lower to mid level " just ad a little coolant till it reaches the upper level but be carefull as the coolant can be very hot if you let the car cool off for oh' a 1/2 hour or so" before hand. It should be ok" "good luck ' hope this helps.

Good "glad I can help"