This feature is currently available on 2012 Sonatas with push-button start that were built after 9/27/2011. Mine was built on September 9, 2011 and I (along with a lot of frustrated Sonata Owners) have been waiting for it to be available on my car. I love everthing else about my Sonata 2.0T but this issue has been the one bad experience that I have had with Hyundai, not necessarily because it wasn't on the car I bought, but because of the absolute lack of communication on WHY it wasn't available and WHEN it would be. Nobody at Hyundai had any information. The dealer service areas are completely in the dark. I had two different service writers ask me if I wanted an "aftermarket" remote start installed at $400-500! Seriously? When the Blue Link
Service is supposed to include this feature? I think not.
Finally, 8 months after the car was delivered, a Technical Service Bulleting (TSB 12-BE-008) was published on 5/4/2012 about the "Blue Link Remote Start Retrofit". It describes the procedure for replacing 3 electronic modules that will permit the BlueLine remote start to work. The Parts kit lists for $300 but will only be installed for users who have the BlueLink "Essentials" package and requires a reprogramming of both key fobs that came with the car.
Problem solved? Not quite. My dealer still does not acknowledge the existence of this TSB and "has no idea when the necessary part #95400 - 3QA00 will be available."
I'm sure that in a month or two I will get a letter from Hyundai instructing me to call my dealer to arrange the retrofit, but it's been 8 months. I'm tired of waiting. This is a perfect opportunity to make use of the Serenity Prayer. I see no other alternative.
P.S. As I said, I love everything else about the car and the dealer, other than this point, has been great!