The brake stop pad spontaneously shattered on my '15 Ford Mustang V6 while driving. The car lost power: Would not exceed approx 1500 RPM, throttle unresponsive, no check engine light (mil). I was driving on a two way road and suddenly lost power as I was approaching the 75mph section from 55mph. The tractor trailer behind me could have rear ended me if they weren't paying attention. Fortunately, when the pad broke, the brake lights illuminated despite not depressing the brake pedal. Other drivers were aware there was a problem immediately before I turned on the hazard lights. With the pad broken, the tail lights will not turn off even after engine shutdown and the button-start ignition bypassed the need to depress the brakes to start the engine. It is dangerous to be able to start the engine without needing to engage the brakes. Many people have had this problem but it is difficult to troubleshoot since there's no mil or dtc codes. Third party replacement pad cost $2, but Ford, apparently, only sells the whole brake assembly for $200 and costs up to $900 to have it done. People have opted to use zip-ties or disc magnets instead. Vehicles with this brittle brake pad need to have them replaced asap. It seems '15 vehicles are failing after 3-4 years. The sudden loss of power and bypassing the button-start ignition safety features makes this a serious issue. Owners with this issue seem to live in hotter regions like Texas or Florida.

- Fort Worth, TX, USA

The incident took place in last summer. My brake light switch pad broke into pieces while I was trying to merge into a city highway from a freeway. Suddenly I could only accelerate for 2 seconds whenever I step on gas, and I also noticed my brake light never stops even after I turned my car off. I almost got into an accident and got killed. This problem is a very common problem among new Mustang models after 2015. Ford is not doing anything, and they would charge you $200 for the whole brake assembly while I only needed a 50 cents plastic pad. My dad is a car mechanic, and he was surprised that a car in 2015 would have a such common problem in 90S.

- Houston, TX, USA

Paint bubble on hood, replaced 3 right window motors, low pressure fuel switch, little plastic button on brake lever deteriorates cause brake lights to stay on causing car not to accelerate properly. Car only has 39000 miles on it!! window motor, pressure switch and brake lever cost $2000 to repair. Really upsetting spend over $30000 for a automobile than within 39000 miles and I need to spend this kind of money.

- Deerfield Beach, FL, USA

My wife notice the brake lights were stuck one. Tired several different steps to see if the problem could be remedied. Such as starting the car, locking unlocking, nothing seem to care of the issue. After doing some research online on one of the Mustang forums there were a few people that had the same issue. It seems that there is a little white plastic button on the brake lever that depresses the brake light switch. This seems to dry and crack and fall off the pedal assembly, see attached photos. So instead of letting the car set all day and drain the battery I had my wife drive the car home. On the way home she experienced a running issue the car seem to shutter would not go above 30 to 40 miles an hour. Fortunately it was all side roads on the way home. If this had happened going down the interstate it could've been a big problem. From what I've read apparently the car goes into limp mode" sensing that the brakes have been applied" from the research that I've been able to look into the little plastic button which is probably about two dollars to produce is not available separate. The only way that this can be replaced is a brake pedal assembly which I read is approximately $300 plus labor. Some people are purchasing a rubber clutch pedal bumper from Toyota and putting in place of the plastic one Ford had. My major issue is that if she was on the interstate in the car slow down to 30 miles an hour who knows what could've happened. I believe this to be a safety issue since the car does not run properly when this part fails. I've been told the replace pedal assembly has been upgraded from the original part.

- Deerfield Beach, FL, USA

The stop pedal pad brok and the brake light were always on. The car stopped braking at all suddenly! I did not crash because the loss of braking happened while parking in a low transit street. Firts there was loss of acceleration randomly in a highway. I found the pieces of the brake pedal pad in the car floor. This is a severe risk factor for crash because when the stop pedal pad brakes the car will not brake suddenly.

- Weslaco, TX, USA

The contact owns a 2015 Ford Mustang. While operating the vehicle on a busy highway, the speed would not exceed more than 40 mph and the rear brake lights remained illuminated at all times. The vehicle was taken to mullinax Ford (1210 N lake blvd, lake park, fl) where it was diagnosed that a sensor in the brake pedal was faulty and the brake pedal needed to be replaced. The brake pedal was replaced and the failure was remedied. The manufacturer was not notified of the failure. The failure mileage was 30,000.

- Palm Beach Gardens, FL, USA

Brake lights would not shut off and stayed on steady so people behind could not tell whether or not I was braking....when driving car would drop speed for no apparent reason like it was going to stall out. I found small plastic debrie on floor mat I guess it was a washer type thing from brake switch brittle and broken is pieces? this all happened while driving.

- Coconut Creek, FL, USA

A plastic pad attached to the brake pedal arm that's required in order for the brake light switch to operate correctly apparently disintegrated. As a result, the brake lights were on continuously. I noticed it when ithe car was parked at home, but do not know when it happened.

- Clearwater, FL, USA

When driving the brake stoplight switch pad that attaches to the brake pedal assembly fails due to it being brittle plastic. This causes the on board computers to believe the brakes are being applied and drastically slowing the vehicle down from highway speeds to less than 50mph and preventing acceleration. I was accelerating to interstate speeds when the vehicle suddenly felt like the brakes were applied. This reduced my speed from 60 mph to 47-50mph with traffic behind me. It also illuminated the brake lamps on my vehicle which made it appear other drivers I was stopping abruptly. When I came to a stop I could accelerate up to 35-50mph however it was intermittent acceleration as the car would lurch forward and slow down. My brake light were on the entire time confusing other drivers. Pieces of the broken brake light stop pad were found on my floorboard once I was able to navigate the vehicle home.

- Riverview, FL, USA