Mid-sized dealership in Midwest-
We have recently added a section to our maintenance agreement where the customer has to check either a network services rider($195-295 per year depending on the customer) or check the box that says if you don't check the above box, you will be billed $xxx per hour for network services.
This doesn't mean as a salesperson we can't either remote in or stop out and load a print driver, but the customer up-front knows that we now charge for IT services.
A couple of customers have asked and slightly complained, but when you explain to them that changes on their network and computers are not controlled by our dealership and that they would need to pay their IT company to make these changes they usually understand.