HAS ANYBODY HAD THEIR BATTERY LIGHT COME ON AND STAY ON FOR ABOUT 20MIN OF DIRVING?<br>THIS HAS HAPPEDNED TO ME THREE TIMES IN MY 98 A4-2.8 QUATTRO. THE LIGHT GOES OUT BY THE TIME I GET TO THE DEALER, THEY HAVE CHECKED THE CHARGEING SYSTEM AND DIDN'T FIND ANYTHING. I'M BRINGING IT BACK ON MONDAY,