I have an issue with this tailgate electric lock on my 2015 truck. It works sometimes and then it doesn't. Does anyone know what the P/N for this is so I can get a new one or even a link to an aftermarket one. Even better if there is and aftermarket handle that has manual keyed access. Bad engineering on Fords part to design a vehicle that is completely dependent on this working and no other way to get in. Did they not realize that people put tonneau covers on these trucks. Any advice would be appreciated. Thanks.