abs light comes on and brake light keeps flashing
abs light and brake light on on 1997 Audi A4
Will need more information here. It means you have a problem with the ABS system, the system will set trouble codes to aid in determining the route cause. If the brakes feel normal I would suggest immediately checking fluid level in the master cylinder. If fluid is too low then it is leaking out, this is very dangerous and should not be driven until repaired. If everything appears normal then the issue is less severe but still needs to be evaluated thoroughly and repaired.
Had this same exact issue, the only solution is to change your ABS module. may cost between 200-900$ if you go to dealership. Module is often faulty on this model, and there was a recall only applicable to US models... in Canada, you're on your own...