New aftermarket ignition switch, from stock.
The Ducato Jumper Boxer vans has often problems with the ignition switch, there are several symptoms, what a worn out ignition switch can cause:
Its too easy to turn the ignition on or its too hard to turn, the most serious problem is, when you can turn the key to start the car, but the ignition switch doesnt turn back to the ignition ON position. It can damage the starter motor, because it will work until the ignition switch is pulled back manually.