It is true that the warranty for the unit is 2 years. It is a comprehensive warranty covering all aspects of the kit for a full 2 years. Most automotive electronics have NO warranty at all, because of the potential for installer error to cause damage. Those that do, are typically 30 to 90 days. And almost all of them cover only the main components. But ours is a comprehensive policy for a full 2 years, which I think most people would agree is more than reasonable.
I spoke to Steven and he confirmed he talked to you and informed you that if your unit was purchased more than 2 years ago, which you seem to have confirmed, that a nominal charge would apply for a replacement switch. They are available on his website
here.
Art