Geoff
Well-Known Member
One last comment to [hopefully] clear things up from my end.Again, it's a theory for why the warning is in the manual. In fact, you'll see that I suggested the same thing in a post a few above yours! Is it the entire reason for the warning in the manual? I have no idea. If it's just that, then using adaptive cruise with a brake controller running flat on the interstate with the distance maxed in order to match speeds that are already pretty close is probably no problem at all as long as you take over braking when necessary. (That is, just use some common sense.) But is that the entire reason for the warning or is there another issue that would make it unsafe under any conditions? I don't think either of us know, so I'll continue to call it a theory without some clearer explanation of the issue from Ford.
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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