Lwrigh ... 12/28/2012
2007 Lexus RX350 Base 6 Cyl 3.5L
Body & Interior
Heater blowing cold air and does not clear windscreen
Several possibilities; incorrect coolant mixture (not at 50/50 anti-freeze and water mixture), faulty heater control valve, faulty / clogged heater core, faulty / clogged heater hoses, faulty heater blower motor, faulty blower relay or fuse.