NHTSA Complaint #11598332 — 2016 FORD F-150

The "service advance trac" light would come on and the vehicle would go into limp mode. Limp mode would last until the vehicle was turned off. This happened 4 times in all. Once in March and three times in June. It always occurred shortly after the initial start of the day. The vehicle is available for additional inspection if and when needed. When the vehicle goes into limp mode, a loss of power occurs. This is a safety concern as moving through intersections from a complete stop is unusually slow and lagging. The Ford dealership did not find the root cause during initial inspection, which resulted in a bad diagnosis and an unneeded repair. The second dealership visit, 3 months after the initial, resulted in finding a chafed wiring harness. It had rubbed against a frame rail near the radiator. The chafing not only rubbed through the harness insulation, but also the insulation on some of the wires inside of the large harness/bundle of wires. The warning lights first appeared in March of 2024 when the unneeded repair was performed. Three months later, in June of 2024, the chafed wiring harness was discovered and repaired by a Ford dealer in Apple Valley, MN. I will do my best to provide the dealer video of the issue as well as the two invoices associated with the repairs. Within the invoices there are excellent notes left by the technicians that describe their findings. With the June invoice resulting in repairing the root cause. I cannot upload the video, so I posted it to YouTube. The chafed wires and rubbing on the frame rail can be seen near the end of this 95 second video: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)