Problem:
Lonsdor K518 Pro suddenly does not communicate with any vehicle.
Solution:
Do an OBDII upgrade (update OBDII cable) and OBD hardware self-check.
Feedback:
Here is the self-test result.
IDM version is too low.
Solution:
First run One-click update.
Then run OBDII upgrade (update obdii cable)
If still not working, the k518 may have problem. It may need a factory repair.