The batteries in these cars are simply infuriating. I was driving the RL all week, and every time would start up fine. Last Friday it started up fine. Except when it didn't. Turning the fake key, it would just click click click click and the dash lights were stuttering. Called for a jump and the car started up. I don't think the battery is more than 3 years old. But maybe I should just change it every 3 years no matter what. Getting stranded is quite the inconvenience.

 

 

Just get a Duralast Gold battery from Autozone. They have either a 3 year or 5 year warranty (which is the life of those batteries anyway). Haven't bought a battery for my other car for like 5+ years. Every time it died, I'd just get a new one.