My 2012 Hyundai Sonata Hybrid Limited is coming up with a warning signal "Hybrid Safety Warning Do Not Drive". This has happened on three separate occasions. The common factor has been that I was driving the car on a 95+ degree F day and it happens when I pull in to park after driving for approximately 30 minutes. The car sounds an alarm and the message comes up on the dash above the steering wheel. Does anyone know what this is? Local dealership and Customer Care Line cannot provide explanation or fix.