2010 Nissan Xterra Q&A
2010 Nissan Xterra Question: while idling my interior heat goes cold but heats back up when moving. why?
Check your coolant level and top off as needed- both the resevoir and the radiator itself. If you find the level very low (more that a few quarts) top off with the proper coolant and get your vehicle's cooling system checked for leaks. - Tyreguy