You have a blown fuse. The vehicle is designed to provide power to the seats
with the door open/key on or off and with the door closed ignition on. The door
closed/ignition on circuit has a blown fuse. Check the fuse box for specific
fuse number and amperage.
As somebody else suggested it could be a fuse. But for that to be
true the other things that fuse runs would also not
be working, so if everything else works, that aint it.
There is one very nasty thing it could be. The wires
that go from the fusebox power separaterion relay go into the
door and are surrounded by a rubber bellows. Examine yours
carefully. If's it's torn or there's cracks look
inside. What I've sen happen once is the wired themselevs
work haden and break and only make contact properly
when the door is open. The ods of this happening on
two cars at the same time are pretty remote though.
You need to get yoruself a set of the factory manuals
on CD, they have all the scahematics for all models or
all years (they differe greatl yyear to year, model to model).
You can get the manuals off ebay cheap enough. The file
you want is a multi megabyte pdf of all the schematics.
Usenet special: on cases of any filters for BMW: http://u.bmwz.org
http://www.mbz.org | Mailing lists: http://lists.mbz.org
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.