Upon cold start, the at in 'm' manual mode, first gear or 'R', either 4WD lo, hi or 2wd, when accelerated up to 1500-1800rpms, vehicle will accelerate by itself, without operators foot on accelerator increasing speed and rpms approaching 4000 rpms. Braking is possible and will slow to idle rpms safely, but if increased again with foot on accelerator to 1500-1800 rpms, symptom will repeat until warmed up threshold has been reached. This is between 3-5 minutes after cold start. All is normal after this time and vehicle will not increase in speed by itself. If vehicle sits for 2-3 hrs, symptom can be repeated. Outside temperature does not seem to play a factor. It is most easily experienced in 4WD lo, as the speed is lower, yet the rpms are the same as in 4WD hi or 2wd. I first experienced this when backing up (in 'R') in 4WD lo after a cold start and had to increase speed and rpms beyond 1500 when vehicle starting increasing in speed by itself. I was able to brake and no damage or injury occurred. I have since experimented to determine exactly when this symptom occurs.

- Blue Lake, CA, USA

While driving the 2017 Ford F350 pickup truck down the highway at 60 mph, whenever I drove across bridges or hit small bumps, the pickup truck would shake violently and I had no control over the vehicle until speed was reduced to under 50 mph. This incident is know as the "death wobble". the truck had 14,000 miles on it the first time this occurred. Took the truck to the dealer, they replaced the track bar, sent back, and a week later the same issue of the "death wobble" happened again. Truck is at the dealership currently, and has been for a week. The same exact incident has occurred on another family member's newly purchased 2017 Ford F350 also and has been taken to the same dealership.

- Bridgeport, NE, USA