Greetings for anyone who happens to arrive to this forum searching answers to Skoda won't turn off problem.
Here's my story:
Got 2011 Skoda roomster 1.2TSI .
Engine kept running even when I turned the key to the off position. Engine turned off when Reverse gear was chosen.
The problem was that the trunk wire set hat worn down and the wires were touching each other.
The wire insulation was completely worn at the place where the wires go from the car inside the trunk hatch thought the tube.
First sign of the problem actually was that the windshield wipers turned on when the trunk lid was open when the car was on.
Mechanic changed the whole wiring set. The set cost 200e, the work cost also 200.
If I had known where the problem was, some insulation tape around the wires would probably have sufficed.