Finally got my "Hybrid Safety Warning Do Not Drive" alert diagnosed. The alert happened when I was putting the car in park and was accompanied by a loud beeping alarm inside the car. Turns out it was the PRNDL Neutral Safety Switch. What an extraordinarily painful process it has been working with Hyundai! My car spent one day at a dealership who told me they could not duplicate the warning and the Hyundai Tech Line had never heard of that warning alert. Then it took three days and 200 miles on my car at another dealership to see duplication of error. Then only by chance, a Hybrid Task Team happen to be at the second dealership for some other cars and my car got a good look so it could finally get diagnosed. Not that it was even a Hybrid problem but the task team seemed to have a greater diagnostic skill set. Incredible that a warning like that was not documented in the the Hyundai Technician Manual or in the database that the Tech Line has access to. Even more incredible that an error message like that is not recorded in the on-board computer as a significant event. The Hyundai Customer Care Line has been unhelpful for the most part. I called daily to try and escalate my concerns. I finally got a sympathetic agent on day 3. She escalated my case for me and is trying to get me reimbursement for a rent a car. When I called back to get a status on day 4, the agent told me my case is "being reviewed". I love my Sonata Hybrid Limited but I sure hate working with Hyundai on a service issue for a Hybrid. At least I am finally on the right track now with a diagnoses. They replaced the part and they are calibrating the car with the new PRNDL switch this morning.