Local workshops are saying its easy to earn money from you, as they have zero accountability they can claim whatever they like. In this case they never bothered to invest in tooling like a scan tool, so for them they lose if they want to follow procedure. The other way is deceit which is free.
The information you see on the net is the factory recommended procedure, same factory that actually made the car.
Im a very simple man, i prefer to get information from the original source, the original source is the manufacturer in this case.