OK, the car will not start today. I have no clue why, it isn't even trying. I turn the key and i get a click and that's it. No effort on its part. I turn my headlights on and the headlights seem fine. My stereo seems fine. How can i check to see if its the battery? I don't want someone to jump start the car, me move it, and then it be dead again.
I had my stereo running yesterday with the car off for maybe an hour or so. The voltage reading on my capacitor is usually 11.8 or 12.0 with the car off. But now its reading about 10.1, that a sign of anything?
2013 C300 4matic
2009 C300 4matic
2001 E320 Sport