I've been having this problem for about 3 weeks now..... The car will just die on me while driving and the battery just drains to about 8 volts. I replaced the alternator but no luck, the problem still exists. Im not sure if it has anything to due with it, but my srs light came on a few days before it started happening, also the battery light wont come on when i start the car, all of the other lights do except for the that one. Anytime this happens, i have to jump start the car, but sometimes itll only drive for a couple of minutes. Im lost and the mechanic that was checking it is too. Thanks in advance for the help.