2011 Ford Mustang 3.7L V6 convertible, premium, automatic transmission throttle body failure (part # at4Z-9E926-B) while driving, the car suddenly decelerates, the dashboard 'wrench light' comes on, the front end of the car rumbles and shakes, and the car will not accelerate, forcing me to pull off the road. This happens at moderate speed on local roads and at highway speed. If I pull off the road, turn the car off, wait a few minutes, and then restart, it usually runs normally. On one occasion, it did not. It decelerated and then stalled completely in the middle of a four way intersection while I was on the way home from the dealership after being told there 'was no code, ' so they weren't able to do anything about the problem. I coasted through the intersection, pulled over, turned the car off and then restarted it, after which it ran for about a minute, shook violently, and then stalled. Every indicator on the dashboard was illuminated. It seemed as if the car was choking. I repeated this over and over, creeping down the shoulder, back to the dealership. In my case, this part has been replaced three times in the last five years, most recently on Oct 29, 2019. According to my service records, part # at4Z-9E926-B was used for each replacement. Apparently, Ford replaces a defective part with another defective part. This part should be recalled and replaced with a different or improved part that will fix the problem once and for all. 2015: Code P2135, replaced throttle body assembly 2016: Sent away from dealership, no fault codes, unable to verify 2016: Returned to dealership shortly after I was sent away; code P0315, replaced throttle body assembly 2016: Customer satisfaction program 16B23, reimbursed for throttle body replacement 2019: No fault code noted on service paperwork, replaced throttle body assembly

- Long Branch, NJ, USA

My 2011 Mustang when driving at around 40mph the traction control light come on and the front end starts to wobble it don't happen all the time. I took it to have it check and was told the rack and pinion needed to be replaced. The don't have but 56000 miles. I did some research and found out Ford recall several vehicles with this same problem. From what I found out that it might be a heat over the electric gearbox

- Lake Charles, LA, USA

I was driving at approximately 35 mph when the vehicle started vibrating with traction control lights coming on. Pulled into a parking lot turned off car and ran fine afterwards. I have had to pull over on several occasions due to the same problem. Then I had my 10 year old in the car on the highway.. I was just getting off the on ramp onto the highway at approximately 60- 65 mph and the car started vibrating with traction control light blinking on dash. It was scary. I had to pull over to the side of the highway turned the car off and back on and prayed we would make it home safe. Now the steering wheel is constantly sticking not gliding as I drive. Sticks more when moving steering wheel to the left. My 2011 Mustang only has 57,00 miles on it. After reading other complaints, a lot of other people are having the same issue with their 2011 Mustangs. Come on Ford, help us! you recalled other models but not the Mustang. I can't afford $3000 to fix and this is a continuous problem with the Mustang and you left us out of the recall. Back up your defective sensors and parts and replace the bad before someone loses their life. Our life is in your hands. Please help with this problem, this fix! please include the recall on the 2011 Mustangs ! keep our families safe!

- Harrison, OH, USA

So the car has a actuator control system stuck open. I have had it at the Ford dealership twice now and will be going back on Monday again for the same issue. When it starts up it runs at the 1 RPM then it goes down from there, not letting the car getting any fuel or speed for it to go forward or backwards. I have cleared the codes and works for a few days but then it does it again. This last time the code wouldn't clear off so I was stuck on the side of the road to have it towed to the Ford dealership. The code on it is P2111. Just very frustrating knowing that I cant really on my car to get where I need to be. The first time I was in my driveway fixing to go to work when it happened and couldn't get out of my driveway. The second time happened again in my driveway but took it to autozone to clear the codes. And the third time I was driving home from work last night on 01/06/2018 when it stopped my car on the highway in the middle of the night. Just doesn't get any power to the car. My copy of the invoice is in my car which is at the billingsley Ford dealership now.

- Duncan, OK, USA

When car started and I put it in gear it started going but steering wheel would not turn( it was not in locked mode.)it flashed check trac system -chech engine cut car off then back on it was ok. Later I tried to crank it, it wouldnt start read where if you got out locked with key waited till lights went off unlocked it with key it would crank did this and it cranked took it to Ford place put it on computer said was a problem didnt know what would have to check every wire in car could cost up in the $3000 or more. Still doing the dance to crank car. Works most of the time sometimes have to do it twice. The steering has done the not working thing like 3 more times just hope the steering wheel does not lock up while I"M driving I have done everything they suggested on line but it hasnt fixed the problem there are a lot of cars that are doing the not starting seems to be the security system causing the problem like tho the Ford place knows nothing about the problem. Suggested I get rid of the car which I cant afford to

- Pass Christiian, MS, USA

Electrical system problem. There does not seem to be a trigger in regard to rain, hot, or cold weather conditions or how it is being driven. I have had a Ford dealership work on this to no avail. I will start with the safety aspect that is affected. It will do all of these things at once and then slowly come back online, sometimes the errors do not correct themselves. 1. no brake lights 2. no rear turn signal 3. no heat/air (it will turn on and off) - which is bad in inclement weather for old people 4. brake light, traction control light, tire pressure monitor, service engine, all have errors. 5. radio will turn on and off. It will cycle through these things failing, they may fail multiple times per minute or just stay in fail mode, or they may just correct themselves. This started to happen infrequently and slowly stepped up to very frequently. I will attach a link to a youtube video that will show my car. Https://www.youtube.com/watch?V=-1zqr4wbvqw

- Lamar, MO, USA

The contact owns a 2011 Ford Mustang. While driving 50 mph, the ABS independently engaged and the vehicle pulled to the right. The advancetrac (electronic stability control system) indicator illuminated. The dealer diagnosed that the steering angle sensor failed and the electronic power steering assembly needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 62,000.

- Stamford, CT, USA

The car stopped taking gas on the highway. We had to stop, shut off the engine and restart. Within 2 weeks it happend several times, 1 week after the first time it happened 7 times in one hour. The Ford garage sent us home after the first time, we should watch. Then we should wait 4 weeks for a repair (missing parts). Finally they repaired it 1 day prior to our departure back home. It was the throttle body which had to be exchanged. But we didn't receive any support from Ford or from the dealer (galloway in ft.myers). We paid over 1000$. the vehicle has only 42000 miles.

- Cape Coral, FL, USA

This began as of last Thursday. I have a 2011 Ford Mustang that I bought just last August. As I was driving on the freeway, a wrench light came on and my car seemed to have stalled on me. I thought maybe it was because it was pouring down raining so I was able to pull over into a parking lot since I was exiting the freeway. I turned off the car after it seemed to vibrate a bit, waited a few moments, turned it back on and it seemed fine. I was able to get home and park it only a few miles from where it happened. I had a doc appointment later that day and was able to get there. It was when I was on my way home that it happened again, on the freeway! it occurred again the next day (Friday) as I was leaving from work. I was on the freeway again in busy traffic and it happened twice except the second time, my engine light came on. My dad took it to a mechanic, it was hooked up to the computer and no code came back. Coolant was put in it and the engine light went off. The throttle body was cleaned. Everything was fine afterwards. Today, I'm driving to work and it goes into limp mode twice on the freeway while drivers are swerving around me! this is not safe at all! I have extended warranty on my car so this is going to have to be fixed asap. To anyone else having this problem, please be careful. Once it goes into limp mode, your speed will drastically decrease and you will not be able to accelerate. It is scary because not all parts of the freeway have a shoulder to pull over...this needs to be a recall before someone is seriously hurt. I've read up on other owner's issues and saw that there have been quite a few wrecks behind this.

- Houston, TX, USA

My advanced trac light was on-dashboard. I took it into dean sellers Ford (2600 w maple rd, troy, mich 48084) and was told that I needed to replace the epas because it failed. This car has only 25,400 miles on it and the cost was $1047 plus labor of $505.50. Total cost $1549,00 plus I had to pay $60,00 for a rental car. A car with this many miles on it, should not need to have this kind of repair (epas component) replaced. This was a defective component and I believe that Ford Motor Company should honor the replacement of this part, labor and rental car by issuing a credit this is a safety issue that should not be charged for.

- Bloomfield Hills, MI, USA

Traction control applying when pulling out in traffic.this was not under hard acceleration.

- Pisgah, AL, USA

Twice while accelerating to get up to highway speeds, on clear, flat, dry, and smooth pavement the advanctrac system activated for no reason. It starts by very aggressively pulsing the front right brake, followed by the rear left brake, then alternating brakes all the way around causing the car to swerve almost out of control, at higher speeds like 65-70 it probably would cause total loss of control. The advanctrac also cuts engine power along with the hard swerving makes it even more difficult to avoid a crash in multiple lane highway traffic. This last for about 15 seconds, but it is 15 seconds of out of control highway terror. After shutting off the car on the 2 occasions it then drives for a while like it never happened. When the Ford dealer cannot replicate the problem, and it does not record any error or diagnostic codes in the cars computer system. So Ford says there is nothing they can do to fix this safety problem. Talking with other Mustang owners I found out I am not the only one with this exact same problem with advanctrac, and one other that I know of said he also filled a complaint on here, he said it was complaint number - 10430166. He also said that Ford could not duplicate the problem and he also had no codes, so Ford would not fix his problem. Somehow we have to get to the bottom of this malfunction, it is supposed to be a safety system to help protect you from a crash, not a computer malfunction that causes a crash when the driver is doing nothing wrong on good road conditions. Please help!

- Puyallup, WA, USA

The "service autotrack" light came on as I was pulling out from a parking space in the morning, and the power to the back wheels was reduced. I took the vehicle to the dealership for service, and was informed of a manufacturer defect in the gpas system that could cause the steering to fail. The dealership kept the vehicle, as it is unsafe to drive due to this gpas system defect. Ford is not currently manufacturing replacement gpas systems, they have outsourced to an outside company (per the Ford customer care representative) and it is going to take six weeks to get the part.

- St. Louis, MO, USA

Approx. 1-2 times a month, after leaving my house and driving a short, paved street going to the main road, my advancetrac light on the dash will start blinking, indicating the stability control system has been activated. Along with this the right front brake will be activated by the ABS system. Typically will happen for 10-15 seconds then as I come to a stop to turn on to the main road it will stop. When I then turn on to the main road, as I am accelerating, this will happen again. Sometimes the brake pulsating the front right wheel is light and not too intrusive. Sometimes, if accelerating hard enough, the system will cut engine power, and alternately pulsate the front right and rear left brakes, nearly pulling me out of my lane, as I fight to drive straight. Again this lasts for about 10-15 seconds. After which car behaves perfectly fine, like it never happened. It never leaves any diagnostic codes in the computer system, or any trace that it ever happened, the Ford techs have never been able to replicate the problem, and I can not make it happen on command. Is totally random.

- Boynton Beach, FL, USA