ACC Fault- Door Contact Switch
 

I've had an issue with the adaptive cruise control on my 2013 S6 4.0T, and was wondering if anyone knows a DIY fix. The dealership has given me the run around, so I bought the Ross-Tech software and scanned. Any help would be appreciated.



Edit: I'm fairly certain I can change out the part for switch, but how do I tell which door is the issue basis the scan?

Fault scan picture attached.