Last month I bought an Alfa 4C coup. Every time I take it out for a drive, I feel guilty of infidelity to my Z4. Both are so different, but special. Can't escape the guilt...
AS B21 said, I think Bimmercode is for coding and BimmerLink is for Diagnostics. Personally, BimmerGeeks ProTool is better. It's tied to your google account. You can open and use it on all your Android phones and tablets. Bimmercode/BimmerLink is tied to your current device, if you get a new...
If you have an Android phone or tablet, you can install BimmerGeeks ProTool. It can open the boot easily. Also, if you search the forum, there is a pin shorting trick you can do in the electrical panel behind the glove box.
Keep an eye on it. In my case the oil was coming up thru the connector, not leaking into the connector externally. Broken internal seal. Repair requires pulling the valve cover.
First of all, my oil filter assembly also has the cooler module. Some tutorials suggest sucking out about a litre of coolant from the expansion, tank prior to disassembly. Is this really necessary?
I've had a similiar issue and it turned out to be the eccentric valve sensor. Don't know for sure if it was the actual sensor or the oil saturated connector.