BMW Cars 1999-06

Seats

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Power Seat Motor



Removal & Installation
  1. Remove the seat from the vehicle. Disconnect the side panels by unclipping and removing the screws. Disconnect the switches.
  2.  
  3. Remove the seat control unit from under the seat. Use tool 52 1 100 or equivalent to drive out the 4 bearing pins.
  4.  
  5. Drill out the rivets and remove the base plate.
  6.  
  7. Remove the front seat height motor and remove the rails.
  8.  
  9. Remove the fore/aft motor.
  10.  
  11. Remove the backrest cover by removing the 2 screw at the sides, if equipped, and pushing the cover up to disengage the clips. Pull the cover off and disconnect the wiring.
  12.  
  13. At the lower sides, press the levers down to disconnect the backrest. Pull the headrest out.
  14.  
  15. Loosen the headrest gearbox cover. Remove the bolts and take off the gearbox. Remove the motor from the gearbox.
  16.  
  17. Loosen the bottom seat cushion cover. Remove the bolts at the cable shaft retainer plate on the motor and remove the shafts.
  18.  
  19. Remove the screws and the snapring at the backrest fittings. Remove the motors.
  20.  

To install:

  1. Install the motors. The black plug is for the backrest position motor and the white plug is for the seat up/down motor.
  2.  
  3. Lubricate the splines for the backrest fittings and install the sleeve. Install the fittings and snapring.
  4.  
  5. Install the motor shaft and retainer plate. Install the seat cover.
  6.  
  7. Install the headrest motor and gearbox. Install the headrest.
  8.  
  9. Install the backrest on the seat bottom. Connect the electrical leads. The plug colors will match.
  10.  
  11. Install the backrest cover and screws.
  12.  
  13. Lubricate the splines and install the fore/aft motor. Connect the spring at the fore/aft motor before tightening the mounting nuts.
  14.  
  15. Install the seat front height motor. Check that the linkage is in the same position on both sides. Lubricate the splines and install the sleeves.
  16.  
  17. Install the base plate with new rivets or bolts. Install the 4 bearing pins with tool 52 1 100 or equivalent. Check that the retainer and stops are not damaged.
  18.  
  19. Install the control unit and the side panels.
  20.  

Removal & Installation



Front Seats
E30 Models
  1. Slide the seat to the full back position. Remove the covers and the forward bolts.
  2.  
  3. Slide the seat to the full forward position. Remove the covers and the rear bolts.
  4.  
  5. On 4 door vehicles, remove the cap covering the seat belt bracket. Remove the bolt and bracket.
  6.  
  7. Disconnect the wiring and remove the seat. Be careful not to damage the interior trim while removing.
  8.  
  9. Lubricate the rails and install in reverse order.
  10.  

E36 Models
  1. Move the seat up and full forward. Remove the rear bolts.
  2.  
  3. Turn the seat belt tensioner lock cable toggle a quarter turn to disconnect. It is accessible from the front of the seat.
  4.  
  5. Move the seat back and remove the front bolts.
  6.  
  7. On the 4 door vehicles, lift the seat and disconnect the seatbelt bolt.
  8.  
  9. Remove the seat. Be careful not to damage the sills or trim while removing.
  10.  

To install:

  1. Lubricate the rails. Install the seat and bolts, but do not tighten.
  2.  
  3. Move the seat full forward then move back to the second catch from the full forward position. Check that the catches have engaged properly.
  4.  
  5. Push the seat forward a few times from the back seat and tighten the rear bolts.
  6.  
  7. Move the seat back and check that the catches engage at each position. Tighten the front bolts.
  8.  

Rear Seats
E30 Models
  1. Pull the front of the seat cushion up to disengage from the clips.
  2.  
  3. Pull the cushion out from under the backrest and remove from the vehicle.
  4.  
  5. Remove the bolts from the brackets at the bottom of the backrest.
  6.  
  7. Remove the backrest from the vehicle.
  8.  
  9. Installation is the reverse of the removal procedure.
  10.  

E36 Models
  1. Pull the front of the seat cushion up to disengage from the clips.
  2.  
  3. Pull the cushion out from under the backrest and remove from the vehicle.
  4.  
  5. On vehicles without fold down seats, pull the top of the backrest forward and lift out of the vehicle.
  6.  
  7. When equipped with the fold down rear seat, unscrew the seat belt lower bolt, fold the seat down and remove the hinge cover. Press the lock in and remove the backrest.
  8.  
  9. Installation is the reverse of the removal procedure.
  10.  

 
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