> On BMW M3 you even need a computer to "program" a new battery. You're "calibrating" the battery. This has been around on BMWs for a long time (my 2008 535xi

> On BMW M3 you even need a computer to "program" a new battery. You're "calibrating" the battery. This has been around on BMWs for a long time (my 2008 535xi had this). If you replace the battery yourself and obviously can't program it in, the car will bitch endlessly, but it'll still work.