Vehicle malfunctioned and stopped in middle of highway with no warning. It forcefully braked to shutdown. Was able to restart car and drive away after a minute. Two days later it had emergency sos warning on dashboard. Took vehicle in for diagnostic and repair. When pushing software update the module locked up and car would not start. Replaced module but not confident vehicle will not repeat random behavior. No data provided by audi to ensure this was not trial and error corrections and that the vehicle is safe.