2011 Ford Expedition: adaptive cruise control problems

Filed Apr 13, 2019 · Engine · 279,500 miles · TX

Upon engaging the cruise control while in motion at 65mph (highway) and going up a bridge the vehicle accelerated with accelerator being stuck on the floor (bottomed out) braking became ineffective at that speed. After a major effort was able to pull over. Putting in neutral made the vehicle idle at very high RPM, did not disengage the accelerator. Only after shutting the engine off in n and putting the vehicle in p followed by restarting solved the issue. Second time this occurred was at 55mph (local highway) flat road, same observations. Briefly disconnecting and reconnecting contact did not solve the problem. Very high idle in n and only after putting the vehicle in p after shutting down, the phenomenon was resolved. Only observed while using cruise control. In both conditions road was dry with no precipitation

Filed Feb 18, 2019 · Transmission · 112,000 miles · MI

On december 12, 2017, while traveling at 75 MPH on the interstate with the cruise control set, the vehicle surged forward. Within seconds following the surge, the vehicle unexpectedly downshifted causing loss of control and nearly a roll over accident. The vehicle would not move in any gear. Turning the vehicle off and on 2 times allowed the vehicle to move again. The dealer replaced the control module in the transmission as a result. My cost was $100 since we still have an active warranty.

Filed Sep 27, 2018 · Transmission · 141,000 miles · FL

While my wife was driving on the interstate with the cruise control set at 78mph, the rear tires on our 2011 expedition suddenly locked up, skidding the tires and caused the vehicle to fishtail she had no control of steering or acceleration. When the vehicle reached approximately 35mph the tires released and she was able to steer into the median. At this point, she could not move the vehicle. There was a picture of a wrench on the dashboard. When she was completely stopped, she put the vehicle in park and sat for a few minutes. She then attempted to put the vehicle in drive, but she had no power. The vehicle was running, but she was unable to accelerate in drive or reverse. She had to call for a tow truck. After the vehicle was towed home, I got in it and started it, then noticed the traction control light on. I turned that light off on the dashboard, and was able to drive without any problem. I drove it to a ford dealer, and all the mechanic could find was that the rear struts were worn out. The mechanic told me that our vehicle did not throw any hard code, only a soft code. He said we are basically driving computers now with all the technology. Ford motor company informed me that there is no recall on our vehicle, only the 2012 model that has the same issue. After talking with two different people at ford motor company, I was told sorry, it is not under recall and there is nothing we can do. Upon investigating further, we found out my wife's expedition was manufactured at the same plant in kentucky, made in the same year as the recalled vehicles but 4 months earlier, and has the same transmission (6r80) as the recalled 2012 expeditions that started production in august of 2011. Hope nhtsb can investigate because we can't get anywhere with ford.

Filed Jun 11, 2018 · Transmission · 131,000 miles · AZ

I was traveling at about 70 MPH with cruise control on when the vehicle suddenly downshift twice (from 6th gear to I think 3rd then 1st gear) and the rpms red lined causing the vehicle to jerk and slow down rapidly. I lost all acceleration power and was barely able to make it to the shoulder of the highway. I could not get any acceleration in any gear once I was pulled over. I turned the vehicle off and back on and it work like nothing ever happened.

Filed Dec 12, 2016 · Acceleration, Driver assistance · 38,000 miles · GA

Stability control applies brakes randomly in normal conditions. Primarily this has been at slow speeds. Brakes pulsate and vehicle is difficult to steer/control. On 12/11/2016 the stability system kicked in at the same time the "resume" button was pressed for the cruise control. The front brakes applied with force as the car was trying to accelerate to 70 MPH with the cruise control. The vehicle began to fishtail and the transmission locked up. I was able to get the car to the side of the interstate, but the vehicle behind me had to swerve into the median to avoid hitting me from behind, and the driver in the right lane was forced to brake to avoid me. The vehicle was travelling at approximately 67 MPH on interstate 85n in south carolina. This problem had been reported to my ford dealer, but they "could not find problem" in service dept.