Thank you for your response

I'm not good in electric things.
Can you point me what exactly do I have check in wiring? Do I have to open (unpick) the main wiring?
Can you show it to me on diagram?

Little correction about drowning my motorcycle - it was splashing all the time by water from deep puddles.

Yes, I tried another key - no change.
Motorcycle wasn't overheated. I was suggested by the widget�s red light (lights together with error code)