The steering wheeled locked up and the dash showed error messages of check hybrid system and refill inverter coolant and car seemed to go into limp mode as I could barely accelerate forcing me to pull over. The messages and issue would go away upon turning off car and turning it back on, however the issue would eventually happen again. This has happened while driving on the highway and other various road situations without warning and making the vehicle very unsafe. I have taken my vehicle to Hyundai Ourisman in Bowie, Maryland (the dealership where I purchased the vehicle) three times over two years and they have failed to fix the problem. They have even replaced the battery in the car.