I just noticed this today as well in my S. Is this new? I'm 99% sure cabin overheat was working over the summer - my car would never get over about 104 degrees according to my app, and my battery would be 10-15 miles less when I got in to go home after work. But I've always had the alarm engaged.
The controls also allow both to be engaged at once - you would think if one was engaged the other would be grayed out.