2008 MAZDA CX-9 HAS A MASTER CYLINDER MACHINE PROBLEM. WE REPLACED THESE ITEMS IN AUGUST OF 2011 AND IN LESS THAN 16000 MILES WE HAVE THE EXACT SAME FAILURE. NHTSA ACTION NUMBER PE11026. MAZDA HAS IDENTIFIED A PROBLEM WITH A MANUFACTURING PROCESS DOR THE MASTER CYLINDER PRIMARY PLUNGER THAT COULD RESULT IN INAPPROPRIATE SURFACE FINISH. WE ARE IN THE PROCESS OF REPLACING THESE EXACT SAME PARTS TODAY! THIS IS AN ONGOING SAFETY PROBLEM AND THE MAZDA DEALER TOLD ME THE VEHICLE WAS UNSAFE TO DRIVE AND THE BRAKES COULD FAIL AT ANY TIME. OUR BRAKES NOT ONLY HAD A SOFT FEEL BUT THE DISTANCE TO STOP WAS GREATLY INCREASED. WE HAVE HAD TO REPLACE THE MASTER CYLINDER AND VACUUM POWER ASSIST TWICE IN SIXTEEN THOUSAND MILES AT A COST OF APPROXIMATELY $1300.00. *TR
2011
SERVICE BRAKES, HYDRAULIC
I HAD MY CX-9 GT DRIVING ON THE ROAD. THIS HAPPENED WHILE I DROVE ON STREET AND STEPPED ON BRAKE THE PEDAL TO STOP FOR A RED LIGHT. I ALMOST HIT THE CAR IN FRONT OF ME, BECAUSE MY BRAKE AT THIS TIME, ALL OF SUDDEN, TOOK LONGER STOPPING DISTANCE AS I EXPECTED. IT WAS A CLOSE CALL TO HIT THE CAR IN FRONT OF ME WHILE MY BRAKING SYSTEM REACTED DIFFERENTLY. AFTER ALMOST HITTING THE CAR, I DROVE VERY CAUTIOUSLY IN A FEAR THAT I MIGHT LOSE THE CONTROL OF MY BRAKES TOTALLY; THE BAD FEELING FOR THE UNPREDICTABLE BRAKING SYSTEM REALLY PUT MY FAMILY'S SAFETY IN A COMPROMISE. I HAVE ONLY HAD THIS CAR FOR ONE AND HALF YEAR AND DROVE AROUND 24,000 MILES. THIS NEVER HAPPENED TO THE THREE CARS I HAVE DROVE IN MY 20 YEARS OF DRIVING HISTORY. THE BRAKING SYSTEM SHOULD BE DESIGNED AND PROVIDE WHAT IT SHOULD PERFORM WITHOUT ANY COMPROMISE. BUT THIS ONE DIDN'T DO THE JOB IT SHOULD. DON'T EVEN SEE ANY WARNING LIGHT IN THE DASH. TODAY, I TOOK MY CAR TO THE MAZDA SERVICE. THEY RESPONDED THAT ONE OF THE COMPONENTS OF THE BRAKING SYSTEM IS DEFECTIVE. THEY MENTIONED THAT THE "BRAKE BOOSTER" IS BROKEN. I AM SO SURPRISED AT HOW THESE INSTRUMENTAL SYSTEMS EASILY BREAK IN JUST LESS THAN TWO YEARS, WITHOUT ANY WARNING?? WOULD THIS BE A SERIOUS ISSUE THAT WOULD AFFECT ANY CX-9 MODELS AND CAUSE FURTHER LIFE THREATENING RESULTS. I LIKE TO POP UP THIS CONCERN TO THE SAFETY AUTHORITY FOR FURTHER INVESTIGATIONS.