|The Precondition setting screen--it can be activated immediately or at a set time.|
So rather than climbing into a preheated oven of a car, and scalding my fingers on the steering wheel, my E is a comfortable 72 degrees when I'm ready to go. And the battery can be cooled down to the low 90's or high 80's, which is cool when the ambient temperature is 110 degrees and the temperature on the asphalt is a million degrees (well feels like it anyway). Preconditioning also works in the winter months to warm the battery and the cabin to optimum temperatures before departure.
The real benefit of preconditioning is the power saved cooling the car and the battery. Without it, the car has to cool itself using power from the battery pack. And it takes much less energy to keep a cold car cool than it does to cool it down in the first place. So not only is it a pleasure to get into a cool car, it also means more miles for my drive.