Jerry Caldwell
Well-Known Member
- First Name
- Jerry
- Joined
- May 18, 2019
- Threads
- 5
- Messages
- 227
- Reaction score
- 239
- Location
- Granbury, TX
- Vehicle(s)
- Ranger Lariat
- Occupation
- Retired Architect
The transmission will downshift to control speed using both normal and adaptive cruise so I don’t agree that this is the issue. I think Ford did a poor job of providing signal and ground wiring for the after market electronic brake control and the trailer brakes will not engage in an emergency automated braking event that is initiated by adaptive cruise and the collision control system. This is why I turn those systems off when towing.One last comment to [hopefully] clear things up from my end.
It may be a theory as to why the user manual has a warning not to use adaptive brakes when towing a trailer with electric brakes. Unless Ford comes clean as to the reasons they put that warning in the manual we will never be 100% sure why it's in there.
BUT, the scenario where adaptive cruise causes a transmission downshift to slow the truck down, while NOT engaging the brakes, is NOT a theory. That's real. That'll happen. Is that a real issue? I dunno but it's a handicap I'm not willing to take. For that reason alone I would not use adaptive cruise when towing a trailer with electric brakes.
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