If your Launch DBscar VII or Smartlink VCI says “Diagnostic connector connection is abnormal” (image attached), here are possible resolutions.
Do as the Launch X431 tablet said, Select reconnect 3 seconds after the connector restarts successfully (a beeping sound).
If it’s legitimately losing connection to the VCI, try VCI Firmware Fix in settings.
For Launch X431 V+ V5, PRO3S+ v5, CRP919E BT, APEX etc with DBScar VII connectors:
Go to User Info->Firmware Fix-> Press Firmware Fix ->Scan bluetooth connector
For PAD V, PAD VII, Pro5 smartlink:
Go to User Info->Fix connector firmware/system-> Fix Connector Firmware or Fix Connector System
If SmartLink VCI turns black screen, do a firmware fix.
Make sure you have a good connection, and that the vehicle voltage is good.