Transfer Case problems of the 2019 Ford F-150

One problem related to transfer case has been reported for the 2019 Ford F-150. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2019 Ford F-150 based on all problems reported for the 2019 F-150.

1 Transfer Case problem

Failure Date: 05/08/2026

No accident or damage occurred. I was able to drive the vehicle back to the dealership that installed the fluid mixture without needing the automatic 4-wheel drive feature to prevent damage. The vehicle is at the dealership to address the potentially incorrect fluid that were used and to install the Ford recommended fluid. The safety concern is that the Ford dealership followed the guidance of a well known company (bg products) and installed a mixture of fluids that have never been tested in a complex transfer case that has the torque-on-demand, automatic 4a feature that controls the vehicle's traction during wet/icy conditions. This type of transfer case is not installed in all F-150 trucks, only the upper models like the lariat or platinum models. The dealership installed bg 792 plus they mixed in bg 328 additive per a universal guideline published by bg products. This mixture doubles the viscosity of the fluid recommended by Ford, which is mercon lv (low viscosity). The guidance was intended for less complex or manual type transfer cases not the borg warner 44-67. The installed mix of bg 792 +328 could cause a slower engagement and inconsistent operation of the traction-on-demand system during wet or icy conditions. The borg warner 44-67 uses speed sensing and injects low viscosity fluid through portsinto a "wet clutch" pack, and the hydraulic pressure is modulated by a specifically programmed pid loop. The hydraulic system has not been tested with the bg mixtures, that doubles the viscosity of the fluid. The bg 328 additive is specifically designed for friction type clutching plates, and could cause damage to the "wet clutch" pack found in the borg warner 44-67. I have notified the dealership and bg products of the misinterpretation of the bg guidance but they have claimed that the fluid mix they used "should be ok". They can not, and/or will not provide the chemistry calculation or testing protocols for the mix used, especially with bg 328 added into bg 792.




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