Battery, brake, anti lock and emergency brake lights stay on after the vehicle is started with the systems she?

1990 Audi 90, the lights on the dashboard just came on and won't go out. The systems check light says OK but the brake, emergency brake, battery, and anti-lock lights stay on after it is started. Does anybody know how to fix this.|||Make sure you are getting 13 volts or more while the car is running. You could have a bad battery/alternator. That or else you have some soft of ABS module or cluster failure.