Both the driver and passenger seats on my E61 have the same problem. The front squab cushion thing that is meant to move forward and backward doesn't move. Is this a common fault with an easy fix? It's no big deal but I like it when everything works.
I did mine a few months ago, it's a fairly easy job, just a bit fiddly
Cheers. Looks a bit of a faff but I'll give it a go. Got a couple of weeks to wait for gears are here and didn't want to start pulling it apart until then.