The bug is still in version 0.0.8.1 cant turn on the tractor after turning off on the readout of the dash and monitors don't show anything after starting the engine.

When I turn engine on/ off by IC, everything is OK. Your mentioned bug is when turning by set key on keyboard, isn't it?

When u turn engine on than off by clicking mouse with the Ctrl key i cant turn on the engine again. When i push WSAD keys on keyboard the engine starts but the monitors in tractor wont turn on, they don't work. Nothing helps, turning engine off, entering the tractor again nothing helps.

Try to check tick boxes in game settings. Try to have unmarked one of boxes, which corresponds with automatic starting engine.
It might cause this issue, I would say.

When you let your cursor on the name of tick box for few seconds, there should appear it's description. Unmark one mentioned above.

I checked this, unmarked the tick of auto starting the engine and it don't work, engine don't start clicking manual with the mouse pointer, whats strange when i start the engine with the keyboard button and turn off the engine again then its start working too start engine with mouse button but the monitors inside of the cab of tractor don't work, they work only after starting the engine first time