Climate control

[Ampere]

We all know the icon that does the following: "Activating this feature maintains the current cabin temperature after exiting the vehicle for 45 minutes." I just want to confirm that applies not only to cooling, but also to heating? I am aware that leaving the heater on will drain the batteries fairly quickly. However, we'd like to leave the dog in the car while we have dinner on a 32 degree night. We won't be gone from the car all that long.