Thanks. However it seems to me that some people have reported that theirs doesn't work and some people said theirs does work and some people say you need 2 valves type underneath rather than 1 valve, and that the unattached connector next to the 2 valves underneath the webasto needs a 3rd valve ...

Thanks. Yes I know the part number of mine acoording to RealOEM as I do have RealOEM too. The problem is that most X5 Webastos do not show the same RealOEM part number but most show BMW 64.12-6918942, and they have the number in variations of that eg 6918942 or 6918942-02 or 6918942-03 (mine) or ...

Very glad this forum topic is still going! I have the X5 E53 3.0D Sport 2006 and I have the 2 valves underneath the Webasto with an unattached 2 wire connector tucked away there also. My Webasto is not working at all so I am going to replace it with a good used one from ebay before attempting this ...