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5-Series (E12,E28, E34, E39, E60) Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)

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Old 01-13-2009, 07:01 PM   #1 (permalink)
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1993 e34 seat PROBLEM HELP!!!!!! =O (pictures)

My seats have a problem...



pik 1


pik 2 see how its all lopsided!!



also n e one know whats this thingy for??? it was under the seat!


please can any one help me with this. I HOPE I DO NOT HAVE TO BUY NEW MOTORS
and the worst part bout it its that its not just the passengers, its also the drivers seat!!
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Old 01-14-2009, 08:58 AM   #2 (permalink)
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I can help with headrests maybe. Do you hear a motor running when you try to raise or lower headrest, but nothing moves? If so, that's good. The spiral cable that runs between the headrest motor and the headrest gear actuator is notorious for shrinking in length after a few uses and the square spline at the end of the cable then slips out of the gear actuator mechanism.

You have to pull the back cover off the seat and you'll see the black shielded drive cable running from the motor to the headrest actuator gear. The easy fix I used was to cut the shielding in the middle of the cable using a razor, then remove about a quarter or half inch of the shielding (cutting the shielding twice). Top end of the cable inside the shielding can be pulled out after the first cut...it'll be greasy, so minimize handling of it and use a towel to keep grease stains a minimum.

Once you've removed the small piece of shielding, get a short length of 3/8" fuel line and a couple pipe clamps. Slide the fuel line and two clamps on to the shielding, reinsert the spiral drive shaft into the empty shield and then push the two ends of the shielding back together. While holding the shielding ends together, slide the fuel line over the splice, and clamp in place centered using the two pipe clamps.

This allows the spline to push the extra 1/4 to 1/2" back up into the headrest gear and if you give it a try, you'll find it works now just fine. You can wire tie the cable back in place against the seat back if necessary and then just replace the rear cover of the seat back in place.

If there's no motor noise on yours right now when you try to raise and lower, then most likely its an electrical disconnection. But typically, the problem is the short spline that just needs to be pushed back up and held in place. Shortening the shielding solves that problem and you should be good to go.

Not sure about the tilting seat thing, but have seen others have that problem...hopefully someone posts about it for you. It may be a similar issue as the headrest, but I didn't have that problem myself. Not even sure if there's two motors or one, but it has something to do with both side gears not actuating...think you can see them with seat back off and hopefully get better idea of why seat tilts when rasing. I think you can wrestle the seat back square by hand while actuating the mechanism, but that's not a fix. Good luck with that.

Lastly...have no idea what the mystery mechanism is...can't tell from pic. Never took my seats out either. Wish my armrests were in as good a shape as yours...trying to find reasonbly priced leather covers to replace mine. Seats are good, but armrests shot. Otherwise, your interior looks identical to my '94 530i. I even have the same black and yellow screwdriver set

Best wishes on the seat repairs. I don't adjust my headrests almost ever, but nice to know they work now.

- Hokiepolk
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Old 01-14-2009, 11:22 AM   #3 (permalink)
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Mystery part is the seat belt pretensioner,the bit in your finger hooks onto the seat base.You have to disconnect these to remove the seats,if you pull on the cable it will come out and then retract when let go,this is to allow it to follow the seat when its moved forward and backwards.Your airbag light (I think) should be on indicating a fault if these are not connected.
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Old 01-14-2009, 03:23 PM   #4 (permalink)
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sounds like some work!! oh and last night when i was trying to see if i can get into the motors, I opened up the control that moves the seat. Now the control doesn't work because springs and what not jumped out hitting me in the face xD haha

thanks! when i got the car i was happy with the condition of the seats.. BUT the driver side armrest has a defect.. its SUPER cracked and looks crusty..
AND thanks for the step by step instructions on fixing my head rest! and there are 2 motors that make the seat go up and down and the one on the right near the passenger door droesnt work or maybe the gears are not engaging!... i hope to see if i can fix that seat cuz the seat is not even in the car!! =C

THNX!! =]
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Old 01-14-2009, 03:24 PM   #5 (permalink)
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Is that the reason my SRS light keeps blinking NON-STOP!!!
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Old 01-14-2009, 04:05 PM   #6 (permalink)
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Yes,thats the reason the SRS light is blinking.If I can remember correctly they hook onto seat base,some kind of hook/swivel fitting that locks them in place.
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Old 01-14-2009, 04:15 PM   #7 (permalink)
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THanks!!
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Old 01-14-2009, 08:08 PM   #8 (permalink)
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ok to anyone with the same problem as me look at this link

BMW E34 5-series information and links

thanx for everyones help tho!!
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Old 11-02-2009, 08:39 AM   #9 (permalink)
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anyone knows how to replace my standard power seat with memory power seat? my car is 1992 535i, just got new seats and cant figure out how to install driver side, wiring completely different. if somebody can help, thank you.
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