Just wanted to be sure. My battery light and brake light are coming on together intermittantly while I'm driving. Car is starting up fine. Only reason I want to double check is because I changed my alternator 1.5 years ago with a re-manufactured one. Looks like I need to get another.

 

Check the battery voltage. Looks like an alternator...

 

So I had the battery and alternator checked out. They are in good condition putting out over 14 (volts?). Battery light and brake light indicator are still flashing intermittantly. Anyone else have any ideas. Car is running great. No symptoms other than the lights

 

hmmmm...this just happened to me and it was my alternator. Check brake fluid because that will throw the brake light on but I'm not sure about the battery. The belt on the alternator may have snapped or fallen off too.