Had a fun day today.. drove from Scottsdale to Flagstaff for some early season skiing. Upon getting back to my car in the mid afternoon I am greeted with the "12v battery" low message, and other messages saying the car needs service and is not driveable. Lovely. I gave Tesla a call and all things considered they have been fantastic. They arranged a taxi back to my hotel are sending a rental car up from the Scottsdale service center right now. The MS is going to be picked up from the mountain and taken back for service. In a somewhat stressful situation (especially with kids), they took care of everything. I'm really wondering what the root cause is. My MS is relatively early (~4000) and they already replaced the 12v preemptively.. wonder what happened here.