Also, most any OBDII reader will read and clear codes. They’re cheap and can be had at any auto parts store. I don’t know if they are as thorough as Forscan, but might be worth a shot.
I’m not sure about this, but I think the free version of Forscan might let you clear codes. I know it will let you read them. Either way, a license is only $10, and it’s pretty easy to use, especially if you are only using it to clear codes.
I would much rather do that than take it to the dealer and have them void your warranty. That would be my last resort.