2 year old X, 40k miles. I had annual service a few weeks ago and asked team to check (all was “good”). But now, it's shot just when I needed to take a trip. Message to X community....change your 12v battery no more than 2 years out. Btw: getting hot here in Naples and I’ve run the HVAC on during some inside errands. I wonder if that impacts the 12v vs main battery? Anyone know?