Hello, everyone. After I sold my SL350 (great car, fun pure ), I have now decided for a SLK350 BJ 2005. The car is from 1st hand, MB Sh-kept, automatic, 175TKm. The chain/chain wheel has been renewed by MB. The good piece had been since August last year after the inspection and the HU/AU (without defects ), in the garage and until its sale no longer moved. Since the hibernation the Vario roof can no longer be opened “Please workshop … ” Message The following errors are stored in the memory (ICarsoft Multisystem-scanner I980):1.) 9057 The component or signal line to the component E18/5(case space light on the left) has short circuit or interruption (light works )2.) 9039 The terminal 30 has a low voltage < 10,5V. Errors are entered especially at engine start. Undervoltage is only present when errors are deleted after engine start and then reoccurred.3.) 9097 The control unit N52 (control unit top actuation) sends No data4.) 911C CAN communication with the Variodach control unit is disturbed5.) 96A5 CAN communication with the Variodach control unit is disturbed6.) 90D2 CAN reception timeout: VD Variodach, ( DBE control unit does not replace! Continue troubleshooting in the VD control unit) Are the two relays responsible for these errors or rather already the control unit ? The errors cannot be deleted either. As soon as you delete them, they will appear immediately. Would I be very pleased about your help. V G