The seat back in my BMW get all twisted when you try to raise or lower it?

Undo the clips at the front above the front seats!
then fold back towards the rear!

the seat motor is going bad, or youve blown a fuse

Hi
There should be a set of levers on the right hand side (left hand if you are on the left). one of these will move the seat back and forth, one will raise and lower and one will move the seat back.
Some of these rise and fall levers are a "pump action style" where you push down to get the level or pull up.
Other type will raise the seat fully either up or down. Its on a cam.
I have had these seize before and have had to replace the mechanism.
Cheers
Roger

This is either an electrical problem or the infamous twisted seat problem caused by the cables between the motors and reclining gear units of the power seat.
Check the connector under the front of the seat and make sure it has not been disconnected
listen to determine whether the motor at the front of the seat are turning when you try to move the seat (they are fairly quiet)
If the motor spins, then search internet for "bmw twisted seat"
good luck

it might help, worth a shot.

This is a common BMW problem before giving to a mechanic try looking at the mechanism to see if any bolts are loose or missing,you might find the bracket is broken or torn and needs to be welded or replaced,the job is relatively easy but be carefull because of the SRS system if not sure give it to an expert.

you can change to manual operation by pulling the releasse lever under the l/r seat and this deactivate the moters the roof will open and close manual but you will have to comvert the rear lid when open to secuer the resar lid when the roof is open and this to hold it down.two ruber hold downs like you would use a a beash buggy bonnet

there are 2 cables that come out of the motor that operates that feture. Over time the outsdie tube of the cable streaches, causing the cable that turns inside, to come out of the transmission is drives. One way to fix this is to remove this cable and shoren the outside tube by cutting it, and then re-insall back into the transmission. This is a 50/50 chance repair. The correct way to cure this issue is to replace the lower seat frame. $$$

perhaps this would help http://bellsouthpwp.net/m/i/miales/seatcablesfix.htm and do not paid the thousand that the dealer ask for it.

I had the same problem. It turned out that the previous owner(s) had let a lot of sticky trash accumulate under the seat. After the seat was removed and everything (seat tracks and floor) was given a good cleaning, the seat goes up and down just fine.