s4str

Did a search and couldn't find anything on this. That said, took my C7 to a new indi for my 15K service. All went well, but they can't seem to figure out how to reset the maint indicator. They deal with mostly older Audi, Mercedes, etc. When they got to the menu to reset the indicator, they told me they were prompted to enter a code...bottom line, they're stuck. Anyone heard of this, or can you point me in the right direction, so I can school this indi so they can reset the indicator?