That said, what seems to be the problem with the over-the-counter trailer brake controllers? For starters, they feature software from Horizon Global as well. The attached report further mentions the potential loss of trailer brake functionality, resulting in extended stopping distance. Considering that such a condition may lead to an extremely serious crash, the Ford Motor Company didn’t really have a choice but to call back 6,383 workhorses.
A separate document notes that only those kits installed prior to March 29th may contain the error in question. Dealers have been informed to review their sales records and to contact any customer to whom a suspect trailer brake controller was sold prior to the aforementioned date. Dealers are to reprogram the trailer brake controller’s module using the Ford Diagnostic and Repair System. Of course, this is done at no charge to the customer.
The F-150s included in this recall are 2021 and 2022 models. Ford also lists three software versions for the trailer brake controller, identified under part numbers ML3Z-19H332-AA, ML3Z-19H332-BA, and ML3Z-19H332-CA. The remedy software bears part number MU5T-19J297-DH, and Ford isn’t aware of any reports of accident or injury related to this problem.