Integrated Trailer Brake Control Problems of Ford F-350

The contact owns a 2024 Ford F-350 sd. The contact stated that while driving at various speeds and hauling a trailer, the trailer brakes failed to activate while depressing the brake pedal. During the failure, there were no warning lights or messages displayed. The cause of the failure was not yet determined. The manufacturer and local dealer were notified of the failure, but no assistance was provided. The failure mileage was 14,000.

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I intermittently lose trailer brakes when towing my trailers on my 2023 Ford f350. I have two trailers and both trailers give me intermittent faults saying "trailer disconnected' or "trailer turn signal lights not working", but the trailer is connected and the lights are working - but the brakes do not. I know this is a truck issue because both trailers have no issues with my 2017 Toyota tundra. I have independently tested this theory with both trucks and trailers multiple times but only have the issue on the Ford truck. It seems to either be a bad 7-pin connector that randomly faults, or something with the trailer brake controller. It is very scary as I do not want to lose brakes when towing. I bought this truck specifically for towing my trailers. I have taken the issue to auburn Ford, here in auburn California and they tested the truck and found no issues. But my hunch is they are only using a 7-pin simulator, not an actual trailer.

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The contact owns a 2021 Ford F-350. The contact stated while driving 65 mph, the trailer disconnected warning light illuminated. The contact disconnected the trailer and drove the vehicle to the dealer. The dealer could not duplicate the failure with the trailer being disconnected. A diagnostic test was performed however, no failure was found. The manufacture was made aware of the failure. The failure mileage was 44,000.

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The contact owns a 2019 Ford F-350. The contact stated that while driving at an undisclosed speed and hauling a trailer, the brake pedal was depressed with the "wiring fault on trailer" message displayed. The contact pressed a button on the steering wheel and cleared the message. The vehicle was taken to the dealer; however, the dealer was unable to duplicate the failure. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was opened. The manufacturer advised the contact to take the vehicle to the dealer for service. The failure mileage was approximately 6,000.

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2005 Ford F-350 with faulty integrated brake controller. Consumer states that no matter how hard the brake pedal is pressed sometimes it does not send a signal to the trailer telling the trailer to stop. The consumer stated the integrated brake controller has been replaced 3 times. The brake switch was replaced, however the problem remained the same.

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