"My heater doesn't come on when I start my car"
3 Answers
HVAC is BCM controlled, so could be programming glitch or an ignition switch not sending an ON signal for that system.
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The Avalon can be on for 20 minutes and the heat still does not come on, the fan works. I have to shut the car off and turn it back on for the heat to come out of the vents. The heat the defrosters work all day long after that.