ON NOV 29, 2010 I TOOK MY CAR INTO THE DEALERSHIP FOR STANDARD MAINTENANCE AS WELL AS TO INVESTIGATE LEAKS THAT WERE OCCURRING. THE DEALERSHIP NOTIFIED ME THAT THERE WAS A RECALL THAT THEY NEEDED TO PERFORMANCE MAINTENANCE ON AS WELL RELATED TO THE BRAKES. LEAKS WERE REPAIRED, RECALL WORK (BRAKE LINE AND VACUUM PIPE) COMPLETED. ON MAR 3, 2011 ALL POWER ASSIST TO MY BRAKES FAILED WHILE BACKING UP AND NEARLY COLLIDED WITH ANOTHER VEHICLE. WHEN I TOOK THIS TO THE DEALERSHIP THEY TOLD ME THAT IT WOULD BE $1,000 TO REPLACE THE MASTER CYLINDER AND BRAKE BOOSTER. WHEN I ASKED WHY THIS WORK WASN'T PERFORMED WHEN THE RECALL MAINTENANCE WAS PERFORMED THEY INDICATED THAT IT WAS NOT REQUIRED. MY WORRY IS THAT OTHER VEHICLE OWNERS WILL BE AT RISK DUE TO INCOMPLETE MAINTENANCE PERFORMED BY BMW WITH MUCH MORE SERIOUS OUTCOMES. I AM STRUGGLING CURRENTLY WITH BMW TO CONVINCE THEM THAT THIS IS ALL RELATED (AS NOTED IN THE RECALL NOTICE) BUT NOT MAKING ANY PROGRESS. *TR