[Pepppie]

Originally Posted by No one

I don't think so. I'm very positive seat functions aren't controlled by the computer. Here's a link that appears to confirm my point: http://f30.bimmerpost.com/forums/sho...d.php?t=847823. Does the "hugging" (backrest width adjustment) work? There's only one pump for both width and lumbar (as you know ): http://www.realoem.com/bmw/enUS/show...diagId=52_3761. I'd suggest you either misconnected or improperly installed.

Thanks for your reply! Both the lumbar and with aren't working, so I think (according to the topic you posted) that's because there's no power. I've read the whole topic, but the problem is that I'm not that good in reading wiring diagrams

Which pin (in the big yellow connector below the seats) do I have to connect to get power on the (lumbar) valve?