How to turn on heat in Acura TL?

You can turn on the heat in an Acura TL by simply pushing the auto button and then adjusting for the desired temperature by making use of the provided up and down arrow keys. Once it reaches high, then it cannot go further. The heat will typically blow with cool or room temperature air for a few seconds before heating up. So after putting it on, You should not think it is not working, because it's blowing cool air. The HVAC system in the car usually comes on as well when the car is remote started. When it is set to auto and remote started, it will either cool or heat the car to the set temperature levels.