While yes this is true if you Google it.
But in actual application they will deny you and tell you to lawyer up.
Are you gonna spend 10k on a lawyer or just go ahead and pay for the repair.
My brother lost a 5.7 hemi motor.
They told him since the dealer didn't change the oil it was on him.
A hand written log, and receipts for oil filters etc wasn't sufficient proof. And this was on an oem stock Ram pick up.
He asked about why it was denied. And the service manager told him it was because he can and that his options we to sue the dealership.
Pay for the work that had been done so far and tow the truck away, or pay to have the repair done.
When asked about calling corporate he said go ahead I don't care, the market is good and for every customer he looses he gains 2, they have a wait list of work and he just doesn't care at all.
They can deny you all they want and make you fight it. I've seen it lots of times. The burden is on you if they want it to be.