Heater blows cold air when the car is stopped on 2006 Lexus IS350

the heater will blow cold air at stop lights but work again once the car is moving.

by in Katy, TX on January 11, 2011
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3 answers
ANSWER by , January 11, 2011
First thing to do- Check the antifreeze level in both the overflow and the radiator. Top up as necessary with correct antifreeze type. If fluid is excessively low, get your vehicle to service shop to check for leaks.
ANSWER by , September 25, 2013
same exact thing happened to mine. with the car engine ice cold check the antifreeze level. it WILL BE LOW! fill it to the cold level using ONLY TOYOTA GENUINE COOLANT! turn the car after is filled accordingly, drive it and voila problem fixed.
ANSWER by , April 15, 2011
Hey Katy,,,,I haven oseven 350 does the same thing ..hit the off button due to it mysteriously going to the ac...then go back to the heat...check ur dual temps too....cya fr NY!