Not sure the problem. Es 350 07. Last summer AC started to blow freezing cold on pass side and outside warmth driver side. Took to firestone,told it needed recharging. $325. Passenger got colder drivers got a little cooler .no way near the pass side, tech directed me to Lexus dealer. Oh how expensive. So weather changed. Now get hot again. Took it to a different firestone no money but directed me to dealer. Solar sensor drivers side. No sure.I would at least have some idea from this forum way the problem may be. HELP