PAC RP4-VW11 Wiring Interface
2011 Volkswagen Jetta
Crutchfield Customer Review (What's this?)
I've only had this hooked up a few days but so far it's working well enough. There wasn't a ton of information in the manual, but I was able to follow a few different online videos on installation to get it done in a reasonable amount of time. My SWC maybe don't operate correctly 100% of the time but it's still effective (I may hit volume up 5x and it goes up 3 type thing). Another review on a 2011 Jetta explained that the phone button in the steering wheel won't work but he also talks about how the PAC can be reprogrammed to work with your buttons. I have no idea how that works. Maybe ask that guy.
Pros: Steering Wheel Controls mostly work. Installation is reasonable.
Cons: I believe it's made for multiple vehicle manufacturers so it's not 100% perfect on the VW Jetta.