Hello Together, for some time now, several tell-tale lights have been flashing sporadically, and the on-board computer shows several errors, including: ABS error, “Front Assist not available”, errors in the tire control indicator and in the light range control. In addition, the following systems no longer work: start-stop, park pilot, rear-view camera and central locking. Initially, the errors disappeared after a restart of the vehicle, but now they remain as soon as they open. Last week there was another problem at a speed of 130 km/h in the 5th gear (manual gearbox): The on-board computer suddenly indicated that I was in the 3rd gear, and the speed increased accordingly. Shortly afterwards the display changed to the 2nd gear and then the 4th gear, each with strong speed fluctuations. After a while the 5th gear was correctly displayed again, and the vehicle continued normally. A month ago I had a similar pro on the highway at about 80 km/h. blem: The vehicle only achieved a maximum of 1,500 revolutions. When reading the fault memory, “unknown errors” are displayed. How should I best proceed in this situation?