2016 Ford F-250 Sd

Severe shaking of front end at highway speeds (55-65mph) causing inability to control steering causing immediate reduction in speed to avoid accident and stopping. No warning lamps or messages prior to vehicle shaking. Road was dry and normal conditions. Did not hit any hazard, no potholes, or debris causing damage or explanation as to why truck began to shake. Safety of driver and passengers were at risk due to possible loss of control if continued driving. Problem continued returning to home where vehicle parked approximately 25 miles at 45 mph with no major shaking. This occurred August 6, 2023, at approximately 5:00pm. There was me and one passenger on way to doctor appointment in Tulsa, a 4-hour drive. Did not trust vehicle safety to continue trip. Drove it home and parked. Vehicle is going to be taken to Ford dealership, in Idabel, OK, where purchased and all maintenance has been done. Truck has 33,971.5 miles as sitting now. Not used extensively, highway miles. Will drive to dealership on August 16th, 2023. Leaving it there for them to diagnose and repair the problem. Available to be inspected.

Yesterday (3/20/23), as I was driving on the interstate at about 70 miles per hour, I hit a bump in the road and that caused the truck to go into severe shaking which I later learned has been termed as the "death wobble". I had to pull over to the emergency lane and stop the vehicle in order to get the vehicle under control. Luckily, there were not many vehicles on the road at the time so moving from the middle lane to the emergency lane on the right side was easy to do without causing any disruption to other drivers. I called my mechanic about the situation and he was the one to tell me it was the "death wobble" and it is common in Ford trucks and Jeeps. This was my first time experiencing this "death wobble" and it scared the crap out of me. In the past, I've hit bumps before and the truck felt like it might bounce off the road, but it never continuously shook (and shake violently) like it did yesterday. There was no warning or warning lights or anything like that that came on. As I was going to the emergency lane I did turn on the emergency flashers. I have an appointment with my mechanic to get this looked at in a week. That was the soonest I could get in.

Truck was driving 70 mph going to TN when it started shaking and grinding or awful noise. Lost control of steering d/t shaking. Slowed down and pulled over to side of road to check vehicle equipment. Made call to my son who said it's the death wobble, advised to slow below 60 mph. No death wobble again unless I hit a bump then it started again.

10 times over about a 12 month period,(with 5 of the 10 happening in one 6 hour period, after we have spent thousands of dollars trying to fix this issue) if we run over a bump in the road at over 60 mph, the front end of the truck goes into violent, uncontrollable shaking. The only way to stop it is to smash the brakes as hard as you can to get the trucks speed below 30 mph so you can regain control of the steering wheel and front end. It’s one of the scariest things we have ever experienced. Please make FORD fix this problem before someone gets killed!!!!

Diagnostic Trouble Code P21B0 Reductant level sensor C circuit high I know several people that have had this same issue concerning the DEF tank assembly costing close to $1000. A recall was issued for earlier models but doesnt cover my truck that now has this same issue. It's this type of failure that makes owners of diesel vehicles contemplate deleting these pollution reducing systems. Please consider an expanded recall.