dalekressin · #5 · Jan 17, 2015. I just replaced my battery in November at the dealer on my 2010 M3. 94 530i sold (That was difficult for me) 01 530i >144,500+ miles SOLD. 06 330XI winter's especially fun drive (SOLD) 10 M3 Sedan (sweet) 13 Nissan GT-R Black Edition (SOLD) 16 Porsche Cayenne Diesel. 13.0volts is def not high enough for proper battery charging Keep in mind that if the voltage would only ever go to 12.5v before it could very well be that your failing alternator has potentially damaged the battery that is why you are now getting battery failure symptoms again. Appreciate 1. feuer. 1. Flat, faulty or dead battery. The battery is usually the main reason that your car won't start, and is one of the most common callouts to the AA. There are a few ways your battery might go flat or even die: Something electrical was left on in the car, like the lights, which ran the battery down. You haven’t driven your car for a long time. To be more precise I received 004F40 Print Ribbon Undershoot HE / Hydraulic Unit, 004FA0 Driving Clutch, 004F43 Duty HE / Hydraulic Unit, 004F42 Assembly HE / hydraulic unit. Codes were cleared at the roadside and the battery reset. The voltage was still reading low at 11.8 at ignition off. Car was boosted and restarted fine after a 15 minute It’s best to reach out to the professionals to have them diagnose your BMW’s ERG valve issues. Bring your BMW for service at one of our three locations today! Contact us online here. Here are the signs of a bad EGR valve: - Lowered engine power, Lowered fuel economy, Odor from the exhaust, Emission test failure, Misfire, Rough idling, Check vvLj.