I have a 2001 BMW 740il with 101,000 miles that has been well cared for. I just changes the back breaks to the Ackibono ceramic pads. Even after the change the dashboard still show "Check Brake Pads" and Brakes. Tonight I took a ride with the A/C on, lights and fog lights and the CD player. As I pulled in the driveway the CD playing sounded funny almost tinny so I changed it to another CD with the same results. I turned off the ignition and tried to restart the car and all I got was clicking. I got my big car charger out and charged the battery for 40 minutes and restarted the car with no problem. However, now I have noticed there is no longer the "Check Brake Pads" sign but a little red icon of a battery.

There is one of two things that is causing the problem. Either my battery is on the way out or I need a new alternator. Is there any definitive way for me to tell which one I need? Any help would be appreciated.

Best regards,

Al Gray