I just re read your post.

You are simply missing the cap to jumper the 20 port to the 16 port. I can find the pinout for you and you can make your own jumper set.

My wife has a 2000 1/2 x5 with the 20 pin port. (stupidly obly uses like FIVE or seven pins.

I call it 2000 1/2 because the 2001 officially has 16 pin yet hers has 20 and 16. I did notice recently when I was resetting her oil Service light the cap has jumpers in it. Are you saying your cap doesn't?

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)