[Grishbok]

I am going to do my best to break this down for you all so nobody gets screwed over in the chaotic world of warranties and repairs.

The moss-Magnuson act states that in order to void the warranty, they must provide proof that the modified or aftermarket part was the cause of or part of the reason.

This seems relatively straight forward and as though it would protect you if you want to modify your car. This is a wrong assumption.

Dealerships have the right to refuse work. They excercise this right frequently if they suspect a cars modifications played any role in causing the problem. They do this because it is not in their best interest to have a tech spend unpaid hours diagnosing a car to find out the manufacturer wont warranty it.

When the dealership excercises the right to refuse work, you have a few options. Seeking a lawyer is NOT cheap and will be a very lengthy process and will most likely result in you losing anyway. Another option is to involve the car manufacturers warranty claims District Manager. This guy will come to the dealership and inspect your car, and will make a decision as to wether or not they will pay the dealership to fix it. If you can convince this guy, you will be golden.

The dealership will only warranty fix a car when they know, near 100% that they will get paid from the manufacturer for the fix. A modded car brings that payment into question because if they fix it, and the manufacturer turns around and says they wont pay because it isnt their part, then the dealership is screwed.

Above all else, you must accept that they will not warranty parts that are not theirs.

Hope this helps.