Olivier, it says you logged on yesterday so I guess you're getting your messages. Mate, I am willing to help you sort this models business out. Just give me a call or something. I'm on +44 7802 315 575. I can come over on Monday next week, but after that my time will be short.
I want to help. But you have to help yourself as well...
Did you get your codes figured from your post to the Knowledge base thread. If no Just start a new thread. Looks like a speed sensor anyway looks solvable just don't think the regs read this thread much anymore. No idea why I clicked on it today but found your lonely request for info.
Best of luck