Today when driving suddenly the engine went out, left large red display with the indicator heavy gear problem and a red stop. Then the vehicle could drive to the right. Nothing went on and in addition the message that there is a mountain approach problem. After two minutes it went again. I had the same problem two weeks ago already, where I wanted to drive to work in the morning. Then drove backwards from the parking lot two meters forward and then nothing went on. The workshop is baffled and when reading out no error was shown.