Wipers park incorrectly need reset code

My wipers in my 98 venture started parking in the wrong location.

I took it into the shop and they fixed it for me. When I picked it up they told me they had to reset the computer to tell it the correct parking spot.

They had to do a series of off/on/delay or whatever to reset the computer

CAn somebody tell me what this reset code is so I don't have to pay the shop next time?