I'll chime in here for whatever it's worth (2020 Limited with H.O. 3.5L)
I've had many, MANY issues with mine and all told about 6mos of non-use of the truck.
I am under second review for buy-back, but no final decision. The dealer has "hinted" that my aftermarket wheels are causing an issue with the front transfer case, and I have asked for the Engineering Calculations to prove it. Additionally, I have submitted that the afremarket wheels and tires that are on the truck are wll within the spec of wheel/tire combos offered from the factory. For example - the aftermarket wheel/tire presently on the truck has a diameter of 32" and a rolling circumference of 100.5". There are factory stock packages (the 18" for example) that are both larger in diameter and larger rolling circumference. Additionally - I researched that all of the F150's with front locking differential ("4A" switch) use the same transaxle - including the Raptor. For the Raptor ... the stock wheels/tires are 34.4" diameter and rolling circumference of 107.9". Clearly ... my wheels/tires are not TOO MASSIVE (Ford Hotline words) to cause the clutch to fail ....
First off, there is no locking front differential on any model, nor do these trucks have a transaxle or “front transfer case”.
Second, you can’t install larger wheels/tires on your vehicle and try to justify it by saying that other models come with the same size tires. You didn’t buy that model so it’s irrelevant; the manufacturer is required to warranty the vehicle in the configuration in which it was built, not as you’ve modified it. Raptors have 4.10 axles and heavier duty components to support the 35” tires they are built with. Your Limited does not, therefore your argument regarding “other F-150s” is baseless and downright ridiculous.
Also note that Raptor uses a completely different TCCM and calibration than any other model. That’s the module that controls the transfer case and clutch. So it’s not “the same”, not even close.
Under Maganusson Moss, a dealer must PROVE that the aftermarket part caused the failure, simply stating so will only appease those folks that don't know any better. Harley has been notorius for doing this when ANY part is replaced with aftermarket. For Harley ... the FTC decided H-D had to pony-up a $25 million fine for such tactics.
Wrong. Try actually reading and understanding MM. The legislation was enacted to allow consumers to choose OE equivalent aftermarket parts, like air filters and oil filters, without risk of voiding their warranty
unless it can be shown that the aftermarket part caused the failure. It has nothing to do with you installing oversized tires and damaging your transfer case clutch.
While I have zero knowledge of the specifics involved here ... perhaps this can shed some light for others involved with warranty disputes.
Clearly you have zero knowledge of vehicles (“transaxle”? “Front transfer case”?) yet you’re so adamant that your modifications couldn’t possibly be responsible for your issues. Nor do you understand that you’re responsible for damage/issues caused by your modifications, not the manufacturer.
I don’t know why the concept of a warranty is so hard to understand for so many people, or why said people think they’re entitled to free repairs and buybacks for issues caused by their mods.