Brake pedal went to the floor couldnt stop nearly crashed
- NHTSA ID
- 11705682
- Incident
- Dec 12, 2025
Owner-reported complaints naming the brake system, filed with NHTSA
Data refreshed
Reports naming service brakes, the antilock braking system, brake hoses, master cylinders or the parking brake. Every record below is an owner-reported complaint about the 2011 Lincoln Mkx submitted to NHTSA — not a confirmed defect, not a recall and not a manufacturer bulletin. 29 reports on file name it.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
The 25 most recent of 29, in the owner's own words
Brake pedal went to the floor couldnt stop nearly crashed
I went to put Brakes on and didn't have any Brakes which created an accident. (9/27/25)
Twice while at a stop light with my foot on the brakes because of an incline, the engine sped up like it was grasping for air and the engine shut down. It started back each time, but the second time, my engine light came on. I called AAA since I am a member and went there for the repair. They diagnosed it as a brake booster problem and printed a copy of the Ford document sent to all US Ford and Lincoln Dealers regarding Customer Satisfaction Program 13N02, supplements 2 & 3. AAA suggested I take it to a Ford/Lincoln dealer and have the repair made under the recall. However, when I contacted Ford/Lincoln, they declined to even look at my car and said the recall was VIN specific and my car was not listed. Interestingly at the dealer and when I called and talked to several people at Ford and then Lincoln, they all asked my mileage. My mileage is 134,000, and 13N02 says it is effective up to 150,000 miles. The Ford document does not mention being VIN specific and my car is listed, a 2011 MKX with less than 150,000 miles. Your site says there are no open recalls for my car as well. Thanks [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
The contact owns a 2011 Lincoln MKX. The contact stated that while attempting to stop the vehicle, the brake pedal was depressed; however, the vehicle failed to respond as needed. The vehicle was driven to the dealer to be diagnosed. The contact was informed that the ABS system needed to be replaced. The vehicle was repaired; however, the failure persisted. The manufacturer was not notified of the failure. The failure mileage was approximately 60,000.
The brakes suddenly became very difficult to depress to make the vehicle come to a stop. Emergency repair was necessary, as driving to the dealer was unsafe. Brake booster was filled with fluid. The car then had to be towed to Dealer, where repair required replacement of Brake Booster, Master cylinder, and Booster vacuum hoses. There are recalls for this same make, model and year. Though my VIN does not come up in those vehicles covered by the recall, it is the EXACT same problem.
The contact owns a 2011 Lincoln MKX. The contact stated while coming to a stop, the brake pedal became stiff while being depressed. The contact stated that the vehicle was towed to a local independent mechanic where it was diagnosed that the brake booster needed to be replaced. The vehicle was repaired. The local dealer was contacted. The manufacturer was notified of the failure. The failure mileage was approximately 104,658.
We had to replace the brake booster. Doing research online I saw that other Lincoln models in the same manufacturing year. A lot had recalls for the brake booster. Our mechanic suggested that we file a complaint with you because the recall should have covered all the Lincoln’s. Thank you
Brake pedal faded while in traffic. Was able to steer around other cars, got car to repair shop. Originally couldn't replicate issue. After attempting to drive car mechanic Was able to find problem. Diagnostic tests said master cylinder was bad. Replaced same and still had fading pedal. Diagnosed as hydraulic control unit (abs braking). Had vehicle towed to Ford Dealership for repairs. Replaced HCU no better. Then replaced flex lines at wheels, no better. Finally replaced master cylinder again, and finally fixed braking problems.
The contact owns a 2011 Lincoln MKX. The contact stated that while driving at an undisclosed speed, she depressed the brake pedal to stop the vehicle; however, the vehicle failed to stop as needed. The contact stated that she had to apply added pressure to the brake pedal causing the brake pedal to extend to the floorboard before the vehicle glide to a stop. No warning lights were illuminated. The vehicle was taken to the dealer where it was diagnosed that the brake booster had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and the contact was informed that Customer Satisfaction Program: 13N02 had expired. The contact was advised to call the NHTSA Hotline for assistance. The failure mileage was approximately 190,000.
NHTSA Recall Number 13N02/ Extended warranty coverage on brake booster
First incident 10-15-2019 (purchased used vehicle 09-30-19) Exiting freeway at 55mph and suddenly brakes stopped working( was able to pull aside) then brakes worked normal again. Took vehicle to check breaks and nothing wrong was found. Second incident 02-17-2020 Driving son to school at 35mhp brakes stopped working while doing a right turn and ran over sidewalk to avoid hitting vehicle in front. Bumper got a little damage. Brakes check again and nothing was found. Third incident 05-15-2022 Driving at 55mph on road and brakes stopped working before trying to stop at red light. Hit cement in middle of the road to avoid crashing. Used emergency brake and Bumper was scratched. Turn on and off truck and brakes work normal again. June 22-2022 Took to mechanic after being inspected at several places and found nothing wrong. Replaced brakes, Front shocks and fluid. November 23-2022 Driving on freeway at 70mph. Brakes failed again and almost crash with eighteen wheeler. Was able to hit the brakes with all my strength and merge into honking traffic to pull over on the freeway emergency lane. (could have been fatal) This incidents indicated are major but the problem has been in occurrence on and off randomly and frequently.
The contact owns a 2011 Lincoln MKX. The contact stated that upon starting the vehicle, the brake pedal depressed to the floorboard. There was no warning light illuminated. The vehicle was taken to the dealer to be diagnosed. The contact was informed that the brake needed to be serviced. The manufacturer had yet to be notified of the failure. The vehicle had yet to be repaired. The failure mileage was approximately 108,400.
Brake pedal will go all the way to floor. Very soft pedal. For over a year we have talked to the dealers around Home. They all say Ford and Lincoln don’t have a problem. I talked to Lincoln concierge and she said if it became a safety issue to contact a dealer. It was still on the csp recall at the time. But I was told it expired. I paid to get the car worked on and had a pedal again. Now it’s back to the floor. Backing up a lot and putting on brakes doesn’t help this time. Now ford says yes they had a problem but it expired a year ago. I don’t drive this car every day. It now has 70700 miles. It had 52000 when I bought it 3 years ago. But to me brakes are important. I had to stop quickly in traffic and stopped in the intersection and luckily didn’t have an accident. It should be repaired without cost to me. It is a very serious problem. I’m also calling NTSB with this information to see how many crashes that there has been
The contact owns a 2011 Lincoln MKX. The contact stated while driving approximately 40 MPH, the brake pedal depressed and went to the floorboard. There were no warning lights illuminated. The contact called the local dealer, but the vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The contact stated that the brake booster was repaired in August 2020 under a Customer Satisfaction Program. The failure mileage was 70,740. THE CONSUMER STATED THE FAILURE WAS CAUSED BY THE ABS MODULE. THE FAILURE WAS NOT COVERED UNDER WARRANTY.
LINCOLN MKX SUDDENLY HAD A HARD PEDAL AND CHECKED FOR THE POSSIBLE FLUID LEAKS AND BLEED THE SYSTEM. NO BRAKE FLUID LEAKS WERE FOUND. IT HAS BEEN INCORMED THIS COULD BE A BRAKE BOOSTER OR ABS PUMP ISSUE, ALMOST CRASHED MY VEHICLE IN A HIGHWAY
I was driving my car and a car pulled in front of me I pressed a little harder on the brakes and after that the brakes went to the floor. I brought to my mechanic and he said that the seal on hydraulic brake was broken
The contact owns a 2011 Lincoln MKX. The contact stated that at start-up of the vehicle, the brake pedal would intermittently depress to the floorboard without warning. Additionally, there was an abnormal high-pitched sound coming from the brake booster. The contact had initially taken the vehicle to the dealer where he was informed that no fault had been found with his brakes upon inspection. As the intermittent failure persisted, the contact then took the vehicle to an independent mechanic where he was informed that the vehicle was placed under recall for the brake booster. The vehicle was taken back to the dealer where he was informed that the vehicle no longer qualified for the 10 years/100,000-mile recall repair. The manufacturer was also notified of the failure and referred him to the NHTSA for assistance. The vehicle was not repaired. The failure mileage was approximately 63,000.
TL* THE CONTACT OWNS A 2011 LINCOLN MKX. THE CONTACT STATED WHILE DRIVING 15 MPH, THE BRAKE PEDAL WAS DEPRESSED BUT FAILED TO RESPOND UNTIL THE BRAKE PEDAL REACHED THE FLOORBOARD. THERE WAS NO WARNING LIGHT ILLUMINATED. THE VEHICLE WAS TOWED TO PARKS LINCOLN OF GAINESVILLE (3333 N MAIN ST, GAINESVILLE, FL 32609) TO BE DIAGNOSED. THE CONTACT WAS INFORMED THAT THE FAILURE COULD NOT BE DUPLICATED. THE VEHICLE REMAINED AT THE DEALER UNREPAIRED. THE CONTACT STATED THAT THE FAILURE OCCURED THREE TIMES. THE MANUFACTURER WAS NOT INFORMED OF THE FAILURE. THE FAILURE MILEAGE WAS 74,000. THE VIN WAS NOT AVAILABLE.
WHILE DRIVING THE VEHICLE AND APPROACHING A STOP SIGN THE VEHICLE JUST SHUT OFF ON ITS OWN. I LOST ALL ENGINE POWER, BRAKES, AND STEERING CAPABILITIES., ETC WITH NO WARNING. LUCKILY NO OTHER VEHICLES WERE NEAR ME AT THE TIME. I WAS ABLE TO ROLL BACKWARDS IN NEUTRAL TO A SOMEWHAT SAFE LOCATION OFF THE ROAD. SEVERAL DAYS AFTER THAT IT HAPPENED AGAIN. I WAS IN A PARKING LOT AND HAD JUST STARTED THE VEHICLE AND THEN IT WARNED LOW OIL PRESSURE AND THEN JUST SHUT OFF ON ITS OWN. I CHECKED THE OIL AND IT'S NOT LOW. OIL LEVEL IS PERFECT. AFTER SOME QUICK ONLINE RESEARCH I FOUND MANY SIMILAR COMPLAINTS FROM OTHER LINCOLN OWNERS. UNEXPECTED ENGINE SHUT OFF WHILE DRIVING AND WITH NO WARNING. SCARY AND VERY UNSAFE TO SAY THE LEAST. I CONTACTED THE DEALERSHIP WHERE I BOUGHT THE VEHICLE AND THEY SAID THIS IS THE FIRST TIME THEY HEARD OF THIS ISSUE. PLEASE ADVISE. THANK YOU.
A VALVE STICKS IN THE HYDRAULIC CONTROL UNIT OF THE ANTI LOCK BRAKE SYSTEM WHEN IT IS ACTIVATED WHEN HEAVY BRAKING THAT CREATED A VERY SOFT BRAKE PEDAL WHEN BRAKING BECAUSE BRAKE FLUID IS BEING DIVERTED THRU THE ABS SYSTEM WHEN IT SHOULDN'T BE. I NOTICED THERE WAS A SAFETY RECALL ON FORD, LINCOLN'S UP TO A 2010 MODEL. THERE NEEDS TO BE A RECALL ON MY MODEL VEHICLE ALSO.
TL* THE CONTACT OWNS A 2011 LINCOLN MKX. THE CONTACT STATED THAT THE VEHICLE WAS TAKEN TO APPLE FORD LINCOLN OF YORK (1801 WHITEFORD RD, YORK, PA 17402) AND THE MECHANIC INFORMED THE CONTACT THAT THE HYDRAULIC CONTROL UNIT NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 157,954. *BF CONSUMER ALSO STATED SHE WAS HAVING ISSUES WITH HER BRAKES WHICH AT TIMES WENT ALL THE WAY DOWN THE FLOOR.*JB
ABS MODULE DUMP VALUE-MY BRAKES CAN BE VERY HARD TO STOP AND IT'S VERY UNCOMFORTABLE. I'M CONCERNED ABOUT MY SAFETY. I HAD NEW BRAKES AND ROTORS PUT ON ALL THE WAY AROUND AND I'M STILL HAVING ISSUES. I HAVE BEEN INFORMED THAT THIS IS A COMMON PROBLEM IN THE LINCOLN/FORD. I HAVE INVESTED ALOT OF MONEY IN THIS VEHICLE OVER TIME AND IT'S BECOMING MORE AND MORE FRUSTRATING THAT IT CONTINUE TO HAVE ISSUES. *TR
POWER BOOST ON BRAKES FAILS INTERMITTENTLY. WHEN THE POWER BOOST GOES OUT, THE CAR EITHER FAILS TO STOP, OR IF ALREADY STOPPED, THEN JUMPS FORWARD UNTIL THE DRIVER STOMPS THE BRAKE TO THE FLOOR TO STOP. IT'S EXTREMELY DANGEROUS.
THE BRAKE BOOSTER FAILED ON MY VEHICLE AND WAS JUST REPLACED BY THE DEALERSHIP FOR NEARLY $900 DOLLARS. THIS IS THE 2ND MAJOR SAFETY ISSUE I HAVE HAD WITH THIS VEHICLE BECAUSE THE THROTTLE BODY HAD AN ISSUE THAT CAUSED THE VEHICLE TO COMPLETELY SHUT DOWN WHILE DRIVING WITH NO WARNING. THAT WAS REPLACED AT NO COST BUT I HAD TO DO MY OWN RESEARCH FOR THE REPAIR AND THAT ISSUE COULD HAVE CAUSED AN ACCIDENT WITH INJURIES OR DEATH. BECAUSE LINCOLN DETERMINED THAT MY PARTICULAR VIN IS NOT ELIGIBLE THEN THE COST IS ON ME, AGAIN A MAJOR SAFETY ISSUE THAT COULD HAVE CAUSED INJURY AND DEATH WHEN THE BRAKES BARELY STOPPED. I KNOW I CANNOT RECOVER MONEY FOR OWN REPAIR BUT I FEEL FORD/LINCOLN SHOULD NOT BE ABLE TO GET AWAY WITH MAKING THEIR OWN DETERMINATIONS OF WHAT VEHICLES SHOULD BE COVERED WHEN THEY ARE AT FAULT FOR BUILDING A POOR. SUBSTANDARD PRODUCT. I DO NOT WANT OTHER OWNERS TO BE RAILROADED BY THIS POLICY.
TAKATA RECAL' MY BRAKES MAKE THIS HISSING NOISE WHEN I STEP ON IT AND SOMETIMES THE CAR WOULD NOT STOP. THE CAR WOULD KEEP ROLLER AFTER A APPLY THE BRAKES AND SOMETIMES THE PADAL WOULD NOT GO ALL THE WAY DOWN SO I HAVE TO USE EXTRA FORCE TRYING TO STOP MY VEHICLE. IT DOS IT ON TURNING ON THE HIGH WAY OR ON A MAIN STREET WITH A SPEED LIMIT OF THIRTY MILLS AN HOUR. IM NOT DRIVING MY CAR RIGHT NOW BECAUSE OF THAT PROBLEM. I HAD MY KID AND WIFE IN THE VEHICLE WITH ME WHEN THIS HAPPEND AND I WAS SCARED THAT I WAS GONNA HIT THE OTHER CAR SO I HAD TO SWERVE TO THE SIDE OF THE HIGH WAY TO STOP.
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