As is the case with the radio, simplicity is the name of the game when controlling the temperature within the 2007 Toyota Yaris. Three dials, prominently displayed and clearly marked, are positioned below the radio on the center instrument panel – one for temperature, one for fan speed, and another for airflow direction. Coincidentally, we had a chance to test the system during a few of the hottest Southern California days on record. Under these conditions, the system was effective, comfortably cooling the interior within a few short minutes.