Have a hard brake pedal. U0401 code. Ford replaced battery. It got rid of code but still had a hard brake pedal. Ford replaced power assist unit. That fix the problem.

- Jonesborough, TN, USA

Brake Booster faulty almost caused me to not to be able to come to a complete stop in traffic. My thoughts were that I needed to have brakes replaced. I did have front and back replaced. But braking are still the same the same..not coming to a complete stop, hissing sound.

- Charlotte , NC, USA

The Brake Booster on my vehicle failed. I had it replaced and two years later it failed again. Many owners of the 2013 Lincoln MKX have this same issue. This is very dangerous and it putting my families and others lives in danger if my brakes were to completely fail while driving down the highway. There should be some kind of recall on this as I have seen thousands of complaints for the same thing on this exact thing.

- Granbury , TX, USA

The brake booster went out, as well as the PTU

- Loganville, GA, USA

Brake Booster problem. When looking online this is a common problem with my year make and model. This is very dangerous concern as I had my children in the car and my brakes would not stop no matter how hard I pressed my brakes. I was lucky there was no on coming traffic or I would have been in an accident

- North Dighton , MA, USA

Our Lincoln MKX had a failure of its power brake booster showing no warning indicator light on the dashboard. The brakes felt like they had air in the lines and excessive pumping was needed to build pressure on the brake pads which eventually needed to be pushed close to the floor in order to stop. We made an appointment at the Ford Dealership. But, since it was a long distance from our home, and not to put us in danger of getting into an accident, we made it to the closest brake repair business we could find that was close to our home. It was found that our Power Brake Booster & Brake Master Cylinder needed to be replaced. We are the 2nd Owners of this Vehicle & we learned that there was an a Customer Satisfaction Program 13N02 - Supplement #1 for certain 2010-2013 Model Year MKX (& Edge) Vehicles that had an Extended Warranty Coverage on Brake Boosters. Our car VIN # falls in the timeframe of this. Moreover, when the Vehicle was purchased from the Ford/Lincoln Dealership, it had 33,341 miles on it & it now only has 51,920. The Customer Satisfaction Program repairs the issue with the power brake booster at no cost within 10 years & on cars up to 150,000 miles. We had to pay out of pocket for our repair & need assistance in getting reimbursement for this expense. This unsafe occurrence also lead to having to replace a Stop Lamp Switch on 02/4/22 which failed & we were charged again (in less than a month's time) for another switch. It was also found on that repair that the booster mount on the inside under the dashboard was not tight & it had a stripped fastener. Now it is being recommended that a removal of the brake booster & master cylinder be inspected for proper installation and that a cut-out of that stripped fastener be done. Access to this requires removal of the instrument panel & steering column to access the firewall to get to the fastener. Invoices related to all this are attached for review except for the last noted recommendations.

- St Pete Beach, FL, USA

The contact owns a 2013 Lincoln MKX. The contact stated while driving approximately 50 MPH and attempting to depress the brake pedal, the brake pedal went all the way to the floorboard and failed to stop the vehicle within a reasonable time frame. The contact was able to pull over and restart the vehicle after waiting approximately 10 minutes. The contact stated no warning light was illuminated. The vehicle was not taken to a local dealer to be diagnosed or repaired. The manufacturer was not informed of the failure. The failure mileage was 125,482.

- Staten Island, NY, USA

My brakes failed. I did not have a vehicle crash. I was pulling out of a parking lot and I was far enough behind the other car to avoid an accident. I took my 2013 Lincoln MKX to the Lincoln dealer and found that there is a 13no2 bulletin but it does not include my car even though they found that the brake booster is bad. I received no notice regarding this problem from Ford and no message on my car. There were no warning messages. I have 47,000 miles on my car.

- New Philadelphia, OH, USA

The contact owns a 2013 Lincoln MKX. The contact stated while driving 30 MPH, he heard an abnormal noise and had to depress the brake pedal to the floor to stop the vehicle. The contact stated no warning light was illuminated. The contact took the vehicle to an independent mechanic and was informed that the brake booster system needed to be repaired. The vehicle was repaired. A dealer was not contacted. The manufacturer had not been informed of the failure. The failure mileage was approximately 102,000.

- Tunkhannock, PA, USA

The power brake booster failed. This happened without any warning or warnings lights coming on. We noticed a hissing sound when using the brakes and a spongy feel. We often had to push the brake almost to the floor in order to stop the car! This put us and others at risk because the brakes were not working properly. We took the car to an auto repair shop and they diagnosed the issue as the power brake booster needing to be replaced. This first started happening a couple days ago. We are now afraid to drive it. Upon doing research, we noticed this is a known issue with Ford and Lincoln and our car was manufactured one month outside of the Customer Satisfaction Program 13N02. This program repairs this exact issue at no cost within 10 years and on cars up to 150k miles. Our car has 81k miles on it. There is no question about the dangers of these vehicles on the road. There should be a recall and it should be extended to cover OUR CAR. We should not have to pay out of pocket for the EXACT same issue others whose car was manufactured one month earlier are being covered for. The issue was clearly not resolved when our car was manufactured. Please look into this.

- Lake Forest, IL, USA

When traveling down a bumpy road, I depressed the brake pedal just as I hit a rather large bump. The brake pedal suddenly went to the floor. From that point on, I had to pump the brake pedal several times just to get the brakes to activate and slow the vehicle down. This is a known issue with valves sticking in the anti-lock braking system on the Ford and Lincoln's. in order to be able to drive the vehicle, I had to remove the 40amp ABS pump fuse and the 10amp ABS module fuse. I now have perfect brake pedal pressure, but the ABS light and brake light are illuminated on my dash. This almost caused an accident. Luckily, I was traveling on a road with no traffic. This should be a recall, since the earlier versions of this vehicle were recalled for similar problems.

- Chandler, AZ, USA

Stepped on brake, made noise and pedal went all the way to to the floor and would not stop almost hitting car in front of me.

- Bakersfield, CA, USA

The contact owns a 2013 Lincoln Mkx. The contact stated that while driving and coming to a stop light, the brake pedal was depressed but failed to lower, causing the braking distance to be extended. After the vehicle came to a stop, the vehicle stalled without warning. The vehicle was restarted. The vehicle was taken to bill hood Ford (1500 N. morrison blvd, hammond, la 70401) to be diagnosed. The contact was informed that the power brake booster was faulty needed to be replaced. The vehicle was repaired. The manufacturer was made aware of the failure. The failure mileage was 107,000.

- Fort Union, VA, USA

Continued braking problems, I replaced all 4 wheel calipers, rotors pads and cylinders approx. 1 year ago. I hit a bump and the brake pedal went almost to the floor. I changed the brake fluid and the ABS pump. The brake pedal is still mushy

- Pittsburgh, PA, USA

While in any road condition and normal driving the brake pedal when pressed goes very close to the firewall floor when braking an its a very soft braking, its very hard to gauge how much presser to apply to the brake pedal. There wasn't any accident.

- Palm Bay, FL, USA

Brake pedal goes to the floor or firewall when braking. The brakes seemed to get better but condition returned. This back and forth has happened twice but now the brake aren't getting better. All of these braking situations are happening on city streets highways, turning all while in motion. Lincoln Mkx 2013.

- Palm Bay, FL, USA

I purchased my vehicle 2 years ago with only 36K miles. 10 months ago I noticed on occasion that after shifting to park the vehicle was not recognizing and alert said to shift to park. Also while braking on hills I could feel pressure building up and pressing against my foot causing me to be forced to press very hard to stop, this continued only on occasion until recently while stopped at a traffic light my car will loose power and the low engine pressure light beeps 3 times. As this has progressed my vehicle is now un driveable. I took my vehicle to Lincoln dealer in spokane wa and was told the brake booster was failing and there was an active recall for this issue but they were unable to repair because my VIN # wasn't showing that my vehicle was included in recall. Please help

- Spokane, WA, USA

Around September 2019, the brake booster on my Lincoln Mkx began failing, getting worse and worse quickly. It got to the point that I had to almost stand with two feet on the brake to make the car stop. (which was frightening when I was trying to stop the car before hitting the one in front of me, even thought I was only going about 30-40 mph). When I pressed the brake the pedal would slightly depress, then hiss and then with my increased pressure on the brake pedal it would depress further, seemingly close to the car floor. The car became increasingly difficult to stop. My mechanic said my brake booster needed replaced and that there was an extended warranty on the part. I purchased the car used. I called Ford and gave them my VIN number and they said that the bad parts stopped being used in March of 2013 and that my car was produced in may of 2013. Well obviously since I had the exact same problem as that which was the subject of the recall, the bad part was used in my car as well. Ford opened a case (#24559511K4) but refused to cover the repair. I had to pay out of pocket to have my car repaired since it was dangerous to continue to drive. The mileage on the car at the time of repair in October 2019 was 110,334. I believe the Ford should reimburse me for the cost of the repair.

- Smithville, MO, USA

The contact owns a 2013 Lincoln Mkx. While driving, the brake pedal traveled to the floorboard without warning. The vehicle was taken to greg sweet Ford (440-593-7736, located at 4011 E center St, North kingsville, oh 44068) where the brake module (part number: Dt4Z2C215A) was replaced. The manufacturer was not made aware of the failure. The failure mileage was approximately 62,000.

- Ashtabula, OH, USA

The vehicle was in motion when brake pressure was lost as I was turning right. I have to push the brake all the way into the floor board. This has happened three other times, where the brakes eventually reset themselves to where I gently push down on the brake pedal. At this moment I have to push hard on the brake pedal all the way down to the floor board.

- Marashville, NC, USA