My 96 S6 is driving me crazy!!! The brake warning light comes on if I press the brake pedal with anything more then light pressure and goes off when I release the pedal. I've replaced the brake fluid and installed a new brake accumulator (bomb) in the hope of fixing the problem but no luck it's still the same as before. I've bleed the brakes 3 times and still no luck, I get clean fluid with no air in the lines every time. The pads are new, the rotors are new, the flex lines are new, the accumulator is new, the fluid is new and the hydraulic pump fluid is new!! What am I missing? Any tips or suggestions would be appreciated.

Thanks in advance!!

 

i'm not sure, but are the pads sensored? did you replace the sensors?

 

Not the brake pad sensor, the light that goes on with the hand brake.... The low fluid level/ low system pressure light. Thanks anyway.

 

Master Cylinder possibly worn and causing low hydraulic system pressure ?

Brake System pressures are quite high, B5 S4 is over 50 bar (725 psi) during hard braking.

 

wow 725psi is pretty hardcore... didn't know it had that much pressure...