[bruno]

No surprise here! Actually, that is very common on today's vehicle batteries. My last 3 cars did the exact same thing...no warning of any type at all, just dead one day, as you described.

In fact, 2 of the 3 batteries lasted only 3 years with the OEM battery. I'm expecting my almost 4 year old 300c battery to go anyday. Actually, it may already be dead no thanks to a body shop that has just let it sit in their lot for almost a month, unattended.

I think I will just be proactive and have a new one put in once I get the car back because I know it is just a matter of time.

bruno