My battery indicator light on my dashboard just started coming on, but so did the 'VSC', 'ABS', and 'VSC Off' indicator lights. The battery indicator goes away after a few seconds, but the other indicator lights stay on. When the battery indicator light comes on, it and the other indicator lights glow brightly, but when the battery indicator light goes off, the other indicator lights dim. This repeats while I'm driving or while the car is on. I did the obvious, replaced the battery, thinking that might be the problem, but no such luck, I still have the same indicator light(s) issue. I'm thinking I might have an internal regulator problem in my alternator, but not sure. Any guidance or direction would be greatly appreciated. Thanks
Battery Indicator Light on 1999 Lexus GS400
by Visitor in Surprise, AZ on June 25, 2011
ANSWER by DaveJM on June 25, 2011
Good thinking on the alternator issue. A battery light is an indication of a charging system failure - undercharging OR overcharging. Have the charging system tested, which should be easier now with a known good battery. You are on the right track.