Unfortunately the dealer is almost 5 hours away from me, and with this latest fuel crisis I can't afford to go all the way there. The dealer said that he talked with the garage who done the service and they said that they filled it by the book, but from what I read online usually this is happening if they don't drain the old oil properly, so the leftover oil will add to the added oil (by the book) and ending up with excess oil. He recommended to do the oil change again, and if it's still happening then it is the sensor. But the recent service on the car was an extra selling point, so I don't want to start spending money already on this. On level ground the oil measurement is in the green, but the oil level is still above the maximum, so I doubt is the sensor.
So there is no way to suck out some extra oil, without going under the car or taking it to a garage?