Hello everyone, after reading a lot of articles on this topic and following the solutions, I can’t go any further. In the meantime, I checked and ensured the following: – The vacuum pump works and the system can hold a stable vacuum and thus move the accelerator forward. I checked this, in which I bridged the corresponding contacts of the control unit. Accordingly, the linkage at the vacuum spring also eliminates as a cause of error. – The valve on the brake pedal is adjusted, for this I pushed through the pedal and pulled the switch forward as far as possible, then slowly left the pedal behind. – All switches and buttons on the flasher lever have passage when operated. – I changed the control unit for safety reasons, but did not detect any obvious defects. Neither with the old nor the new, does the cruise control work. Is there anything that I have not considered yet? I am very happy about advice! Greetings