WHILE DRIVING 2 DAYS AGO (2005 E320) I SUDDENLY GOT A BRAKE WARNING, BRIGHT RED "STOP" 'REDUCED BRAKING POWER DEPRESS BRAKE FULLY' AND THE BRAKE PEDAL GOES TO THE FLOOR WITH LITTLE OR NO STOPPING ACTION, IT WAS VERY SCARY. I WAS ONLY GOING WITH 15-20MPH BUT THERE WAS A RED LIGHT IN FRONT OF ME WHEN THIS HAPPENED. I COULDN'T STOP IN TIME AND HAD TO HIT THE BARRIER TO STOP THE CAR. LUCKILY NO ONE IS INJURED, BUT MY CAR WAS A SERIOUS THREAT TO ME AND OTHERS. I CONTACTED THE MB SERVICE AND IT IS RELATED WITH SBC UNIT AND IT IS OUT OF WARRANTY. THEY WANT $2700 TO FIX THIS ISSUE. I THINK MB NEEDS TO REALIZE THIS ISN'T LIKE THE GLYCOL CONTAMINATION OR SOMETHING NOT THAT SERIOUS, THIS IS A MAJOR PROBLEM IN THE ACTUAL BRAKING SYSTEM OF THE CAR!!! VERY SCARY AND IMAGINE THOSE PEOPLE DRIVING THESE 03-06 E'S, OR 06'S CLS, OR SL'S THAT DON'T KNOW ABOUT THE CHANCES OF THE SYSTEM FAILING AND WHAT TO DO.