NHTSA Complaint #11669415 — 2024 FORD EXPEDITION

When driving at highway speeds with speed control on the car will on its own slow down to 55 or 45 for no apparent reason and will not pick up the highway speed until the next sped limit sign is passed. More concerning is running at speed control set of 55mph on [XXX] the car speeds up when passing a state highway 70 sign the car ...on its own ...speeds up to 70mph. This happened numerous times between Eagle River, WI and Woodruff, WI. When slowing down thru a town the speed control slowed down on its own to 45 then 35 and as we left town the speed control on its own speed up tp 45 , then we passed another Wisconsin highway #70 sign the car speed up to 70 until 50 feet later we passed a 55mph speed sign and the car slowed to 55. Very concerning and the Ford dealer in Eagle River asked if we were on [XXX] ? I answered yes and he acted like he has heard that complaint before, and that there was no known fix to the issue. In our travels we stopped at a Ford dealer in Hazelwood, MO. and the service writer said he had never had heard of the issue. Any help with this ongoing issue would be helpful. Thank you [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)