Half my brakes are working one in the front and one rear, the others are not engaging, no engine or abs light showing on the cluster, both rears work with the handbrake

99 audi a6 quattro

any solutions would be greatly appreciated, thx in advance

 

Did you replace the brake pads or rotors? If so, maybe you have some air in the brake lines or the brake booster might be bad.

 

figured out it was the master cylinder gone bad after flushing the lines, did that now and abs light is on, any suggestions