If the truck is properly put into neutral flat tow mode, the transmission is mechanically disengaged from driveline at the transfer case. That means nothing in transmission is rotating. The only way damage can occur is if the vehicle is not properly put into neutral flat tow mode, or the vehicle's battery discharges and the mode resets, reengaging the transmission. It's enough of an issue that Ford released the following bulletin last month:I had this happen on my 2019 twice, i had to pay for the first one, i tried to get them to pay for it, but they said it was my fault, i didn't follow the directions to flat tow, i said it won't even to if i didn't do it correct. After the snd one, i went to Ford, the first person i talked to, also said it was my fault, but this dealer backed me up, i had to go thru 3 or 4 people to talk to the person that would listen to me, she got me the lemon law, they paid for the truck, the towing package i put on, then they ducted for the mileage i drove before the claim, and they wouldn't pay for the first transmission. You need to go up the food chain, and checking all over the web, it has happened to alot of people, one truck caught on fire, even damaged the motorhome, hop this helps
Service Information
Certain Ford and Lincoln vehicles have the capability of being flat towed (four-wheel-down towed, neutral towed) behind another vehicle, such as a motor home, when the proper precautions are taken and procedures are followed as directed by the Owner's Manual. The Ford RV and Towing Guide (available from www.fleet.ford.com/towing-guides) is another good resource for flat towing information. Additionally, for select vehicles, Ford Motor Company has published how-to guide videos on YouTube to educate customers on how to properly flat tow their supported vehicle. These videos are easily accessed by a Google or YouTube search of "Ford Flat Tow". The presence of a front mounted hitch or draw bar may indicate that the vehicle has been setup for flat towing.
Failure to follow the published procedures when flat towing may result in catastrophic damage to the transmission and/or driveline which is considered non-warrantable. Transmission damage can also result from improperly towing a vehicle with a wrecker (towing with the vehicles drive wheels on the ground). The Owner's Manual contains helpful information regarding vehicle towing constraints. Wrecker towing guides are also available on the Professional Technician System (PTS) website under the Owner Info tab.
Observations made by the owner and/or technician after improperly towing a vehicle may include (but are not limited to):
When this type of concern is found after flat towing (or improperly towing) a vehicle, it is the result of the customer not following the required towing guidelines, or the result of flat towing an unsupported vehicle. Related damages should not be covered under warranty. The customer may elect to work with their auto insurance company to potentially mitigate the costs of these repairs. The following further describes what might be observed after improper vehicle towing.• Vehicle will not move
• Tires locked up while towing
• Grinding noises, improper shifting
• Burned (dark/black) transmission fluid
• Excessive metal debris found in the transmission pan upon inspection
• Melted plastic components internal to the transmission
• Other catastrophic damage to the transmission, transfer case, or driveline
The article includes photos of the type of transmission damage that can occur when a vehicle is improperly flat towed. The fact that you blew up two transmissions and then managed to get your vehicle bought back under lemon law is ridiculous, talk about working the system.