My 2007 learned a new trick today. After using the remote to unlock the vehicle to load groceries in the back, I noticed the Nav and Radio turned on without the ignition being turned on or even having the key in. Once I got home this escalated to not turning off at all, all features controlled from the center dash console, Nav, radio, defrost, rear air, etc stay powered even with the vehicle off and key pulled. Has anyone encountered this before? Were you able to resolve it and how?