Originally Posted by Dackelone
Are you using a BMW Y cable? Some of the Chinese cables don't work properly.
haha, just a little irony. My oem cable failed recently (the small guage conductors in the cable flexed under the armrest over years just won't hold up, not a BMW issue, but really just a limitation of the cable type), I replaced it with a $15 Amazon cable and have no issues. I don't think I would expect either to last indefinitely, but at least the visible portion of the cheap cable is of comparable quality to the $100 oem cable.