NHTSA Complaint #11579477 — 2018 FORD TRANSIT

With this vehicle when driving on highway or interstate once you go past about 40 miles the transmission begins to overheat and when it reaches a temperature of approximately 245° it will kick down into limp mode causing the vehicle to suddenly slow down in front of other traffic. You have to get over to the side of the road and let the transmission cool down before you can continue at a safe pace. This vehicle has been taken multiple times the transmission has been replaced twice. They have replaced the transmission cooler, they have an auxiliary cooler, and the problems still persist. This is very dangerous to be operating when it kicks down tent mode and gears down suddenly. It has been in Fords service shop for over seven months now and we just got it back with the new auxiliary cooler on it and it is still having the same problem.