2004 Infiniti QX56 service brakes problems

“My wife was driving home from work, said brake is failing, makes loud grindy, rattling noise when brake is applied. Once the car is turn off and back on, everything is back to normal. When I got home, i took the wheels off to check everything was ok, pads were almost new, which I replaced last year. Drove around for 10 miles no problem. This is a serious safety issue which Nissan/Infiniti should take care of.”

“I WAS ON THE HIGHWAY DRIVING MY FAMILY FROM TEXAS TO NORTH CAROLINA WHEN I RAN INTO RUSH HOUR TRAFFIC LONG THE WAY. I APPLIED THE BRAKE TO SLOW THE VEHICLE DOWN, THEN SUDDENLY THE STEERING WHEEL STARTED SHAKING, THERE WAS A LOUND GRIDDING NOISE AS IF THE ENGINE ABOUT TO FALLOUT AND MY BRAKE DIDNOT HOLD IMMEDIATELY WHEN APPLIED.”

“THE VEHICLE'S BRAKE WARNING LIGHT KEEPS COMING ON. ROTORS ARE FINE. BRAKE FLUID LEVEL IS HIGH. YET, WHEN I APPLY MY FOOT ON THE BRAKE, THE WARNING LIGHT COMES ON AND THERE IS ALSO A BAD SOUND ON THE FRONT WHEELS THAT SOUNDS LIKE METAL TO METAL (THERE IS A VIBRATION). ONCE I PULL OVER AND TURN THE VEHICLE OFF FOR A MINUTE OR SO, I AM ABLE TO CONTINUE. HOWEVER, THE WARNING LIGHT COMES BACK ON MOMENTS LATER. THIS IS GETTING VERY DANGEROUS AS IT MAY TRIGGER ME TO REAR END THE VEHICLE IN FRONT OF ME. THE PROBLEM HAS BEEN HAPPENING FOR THE PAST EIGHT MONTHS. HOWEVER, IT HAS BEEN GETTING WORST. THE CRUISE CONTROL LIGHT ALSO COMES AND STAYS ON. PLEASE HELP.”

“ON TWO SEPARATE OCCASIONS WHILE THE CAR WAS MOVING IN A DRY PARKING LOT AND APPLYING MY BRAKES, MY ABS BRAKES KICKED ON FOR NO REASON AND THE CAR WAS DIFFICULT TO CONTROL AND STOP. THE LIGHT CAME ON AS WELL AND I HEARD ALOT OF GRINDING. THIS WAS VERY SCARY AS BOTH TIMES I HAD MY CHILDREN IN THE CAR. THE ONLY WAY TO RESET ABS WAS TO TURN OFF VEHICLE. I AM SO AFRAID THAT THIS WILL HAPPEN AGAIN AND I MAY NOT BE ABLE TO STOP. I AM NOW AFRAID TO DRIVE AND AM THINKING ABOUT SELLING IT BECAUSE I FEEL IT IS NOT SAFE TO DRIVE.”

“I GET A BRAKE LIGHT AND A SLIP LIGHT SOMETIMES WHEN APPLYING THE BRAKES. MAKES AN AWFUL NOISE AND SOMETIMES THE BRAKES FAIL TO OPERATE. I HAVE TO TURN THE CAR OFF AND RESTART IT TO RESET SOMETHING AND THEN ITS FINE FOR A FEW DAYS AND COMES BACK. IT IS VERY SCARY. OTHERS WHO HAVE THE SAME VEHICLE HAVE COMPLAINED OF THE SAME THING. SAYING THEY THINK THE BRAKE MASTER CYLINDER IS DEFECTIVE. I HAVE ALSO HEARD OF PEOPLE CRASHING THEIR SUV BECAUSE OF THIS. THIS HAPPENS JUST WHEN APPLYING THE BRAKES. I SEE THIS A LOT IN THE FORUMS AND WONDER WHY THEY HAVEN'T RECALLED THIS DANGEROUS DEFECT. THIS HAS BEEN HAPPENING NUMEROUS TIMES IN THE PAST 5 YEARS.”

“WHILE DRIVING AT LOW/HIGH SPEEDS, THE BRAKE LIGHT WILL JUST TURN ON UNEXPECTEDLY. ALSO, THE ABS BRAKES SEEM TO FAIL WHERE YOU HAVE TO PRESS THE BRAKE PEDAL TO THE FLOOR. THE ONLY WAY TO TEMPORARILY FIX THIS IS TO TURN THE ENGINE OFF AND TURN IT BACK ON FOR THE BRAKE LIGHT TO GO AWAY. AGAIN, THIS WILL OCCUR AT LEAST 1-2 TIMES A DAY AND/OR 28 TIMES IN A MONTH WHILE DRIVING. THIS IS A VERY DANGEROUS SITUATION TO PUT A DRIVER IN ON THE HIGHWAY OR OTHER ROADWAYS.”