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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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Old 05-10-2016, 06:36 AM
528iAut 528iAut is offline
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Mein Auto: 1996 528i
1996 comfort seat problem

Hello.
I just got this car and began sorting out problems.
One major problem is the comfort seat on passenger side. When I just got it the seat could only move backwards, but that stopped working also.
I managed to get the sidepanel and switches off but realized I cant get the seat loose, no access to rear hex bolt. The motor also doesnt have a hole where you can move it manually, so this is a real pita.
I took the connector off this motor and is getting 11,5 volts both forward and backwards, still it doesnt move, nor does it make a sound.
What to do next?
(Sorry, ipad put my picture upside down.)
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  #2  
Old 05-10-2016, 09:02 AM
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mjalloul11 mjalloul11 is offline
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Location: Lebanon
 
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Mein Auto: 1996 528i 1999 MB C240
You could try taking the motor out if there is enough room. Also there is a small box on top of the motor that control it, it could be the problem.
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Old 05-10-2016, 10:56 AM
528iAut 528iAut is offline
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There is a rather large plastic box attached to a rod next to the motor, in the middle of the seat so to speak, right behind the first aid kit, not sure I can get it out, there is very little space under there.
Edit, that large box is a compressor or something for the lumbar support, it has a plastic hose going from it.
Next to it there is a smaller box, it looks like a power distribution box, power and ground coming in and diverted to various motors.
I dont see a little box on top of the motor(s), actually there are two motors, one on each side, none of them has something on top of them.
http://www.realoem.com/bmw/enUS/show...diagId=52_0766
Because of the large box with the hose I can only get to one nut on that motor, the other nut is under the connector for the motor but the box blocks access, I tried getting the hex key on the nut but if finally get it on I can hardly move it. The box cannot be moved I think, it has a bracket that goes to the back of the seat where its attached to another rod.
Maybe if I remove the bracket for the seatbelt I can get to the nut, not sure about that, and I still have to seemif I can get to it on the other side, havent tried to remove the plastic cover there yet, things are even tighter in there.
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Last edited by 528iAut; 05-10-2016 at 01:59 PM.
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  #4  
Old 05-12-2016, 05:39 AM
528iAut 528iAut is offline
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I can see the light in the tunnel now I think, I tapped the gearbox on the motor again and the seat began moving forward, excellent!
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