Local dealership told me the same thing a couple of years ago. They will not work on anything that is over 10 years old. I asked why. the service manager told me Company policy. He said its hard to diagnose older units. If they cant plug into it and read a code there lost.
There's that and - 10 year old atvs, sleds, UTV, motorcycles often have had multiple people work on them. Unknown what kind of butchery they'll find once into it and 100/100 times when they do and get back with the customer on a "time and materials" quote, you're 1500 into the work and the customer goes "that's too much, its 12 years old, may as well get a new one" - while you've basically rebuilt their wiring harness after 12 years of "cousin's putting in a spotlight on the quad this weekend" work.
