I think the problem here is you aren't comprehending what he was saying. So you called up said you had a trans issue because of the light. Then I'm sure you also mentioned your brake light problem. Most likely he was informing you that you will be charged 1 hour diag at $115 bucks and hour for it. Or he may have said you have to pay $115 to diag the car and if it turns to a covered warranty item then it's a different story. This type of confusion happens a lot because customers think they will have to pay out of pocket for a warranty item. Happens even more when there are people from nasioc involved and try to blow things up more then they are or just hate dealers to begin with.