There is battery run down protection that will turn off dome lights and the sunshade mirror. You can test it, leave it on, lock it up then check till it turns off.
I tried it on mine 14 and it works. About 20 minutes with the key out and in lock.
Not the same as RAP Retained Accessory Power (10 minutes) which radio windows sunroof etc work until door is opened or key to lock position.