I HAVE BEEN HEARING A LOUD NOISE BEHIND MY HEADLIGHT ON THE DRIVERS SIDE FOR QUITE SOME TIME NOW. A FEW MONTHS BACK, MY BRAKES DIDN'T SEEM TO WORK CORRECTLY AND I REAR ENDED SOMEONE. I AM GOING THROUGH BRAKE PADS LIKE CRAZY ON MY TRUCK AND MY BRAKES STILL DON'T SEEM TO WORK CORRECTLY. I WAS DOING RESEARCH AND FOUND OUT ABOUT THE VACUUM BRAKE ASSIST BEHIND THE DRIVER SIDE HEADLIGHT. THAT'S WHAT'S MAKING THAT NOISE INDER MY HOOD & HAS GOT TO BE THE PROBLEM FOR THE LOSS OF MY BRAKES. IF MY BRAKES WORKED CORRECTLY I WOULD HAVE NEVER REAR ENDED CAR IN FRONT OF ME. I KNEW SOMETHING WAS WRONG AT THAT POINT. & NOW I KNOW THE EXACT CAUSE. BUT WITH EVERYONE HAVING THIS ISSUE WITH THE 2011-2012S, I THINK THIS IS SOMETHING THAT SHOULD BE A RECALL. FORD SHOULD BE THE ONE PAYING FOR THE WRECK I GOT INTO SINCE IT'S A COMMON PROBLEM THAT'S HAPPENING. HOPEFULLY WE COULD COME TO A CONCLUSION BEFORE SOMEONE GETS KILLED! I DO HAVE AN ACCIDENT REPORT IF YOU NEED MORE INFORMATION FROM IT.