Hello everyone! Just a month ago I bought a 1999 US-spec 550 Maranello. The car is just fantastic and thank to this community (and info I found here) I managed to fix many issues the car had. But there’s one annoying issue I couldn’t fix and couldn’t find the solution. The passenger window doesn’t always go down a little when I open the door. Sometimes it does, sometimes it doesn’t. No matter which handle I pull (inner or outer), or if the car is started or not. Just 50/50. If I reboot (calibrate) the ECU by pushing the window button up and down for a while, it works fine until I lock and unlock the car again. Then again 3 times yes 5 times no.. Checked all the wires, the microswitch, everything looks fine. Seems like ECU fault that doesn’t depend on anything else but it’s own brain. At driver’s side all works just fine. Do I have to replace the windows ECU? Or should I first look somewhere else?