Can the dealership disable the check engine light so it doesnt come on anymore?
Yes, by fixing the problem causing it to turn on. A 2018 is under warranty, speak to the dealership to find the problem and have them fix it.
That’s illegal . . .
Don’t expect anybody at the dealership . . . or any independent shop, for that matter . . . to help you out
Unless you’ve racked up a ton of miles already, your vehicle should still be under warranty
Instead of asking for something illegal, why don’t you just have the dealership properly diagnose and repair the vehicle?
Why do you ask?