Removal and installation the front seat (BMW 5 Series E39)

Caution: If the seat has an electric drive for adjusting the seat and a fault occurs in the drive, follow the instructions at the end of the chapter.

Removal

Using the seat height adjustment mechanism, set the seat to its highest position. Move the seat forward as far as it will go.



Remove the seat belt mounting bolt.



Release the stopper "1" by moving it backwards and pull it inward. Press the Bowden rod "2" forward to adjust the height of the seat belt.



The pads are turned out with an upward movement from the inside "1", for which release the clamp tongues, lift them up in the middle "2" and remove them with a backward movement "3".





Unfasten plug "1" and disconnect "2".



Remove the rear mounting bolts.

Move the seat all the way back.



If there is an electric drive: A - unfasten and fold forward the cover, B - unfasten "1" and disconnect "2" plug.



Remove the front bolts.



Remove the front seat from the vehicle.

Caution: If the seat is transported, dismantled or removed for a long period, the seat belt tensioner must be deactivated, see page 144.

Installation

Insert and align the seat. Note: The floor covering in the area of the mounting bolts must not get between the seat rails and the floor, as this may subsequently lead to the occurrence of scratching noises.

Attach the seat with new bolts, first at the rear, then at the front. Do not tighten the bolts. Caution If the old bolts are used again, their threads must first be treated with a non-loosening agent, such as Loctite 270.

Tighten the mounting bolts to a torque of 40 Nm in the following sequence: front inner, front outer, rear inner and rear outer.

Electrical seat adjustment: Move the seat all the way back. Connect and secure the plug. Install the cover.

Connect and lock the multi-pin plug connector.

Secure the pads,

Attach and lock the Bowden rod of the seat belt height adjustment mechanism.

Tighten the lower seat belt mounting bolt to 50 Nm.

Actions to take if a defect occurs in the electric drive for adjusting the seat in the longitudinal direction

Remove the cover from the inner seat rail.

By changing the tilt of the seat, move it upward.

If available, disconnect the hose from the pump that adjusts the backrest to a comfortable position for the spine.

Loosen the 2 bolts at the front of the seat rail and fold the front seat back.

Unscrew the 2 bolts securing the seat drive actuator in the longitudinal direction and remove the actuator.



Operate the seat forward/backward movement control switch.


If the actuator does not work: install and operate the new actuator. If the rearrangement is successful, the actuator is OK and only the actuator should be replaced.

If the actuator works but the seat does not move, the drive is faulty and must be replaced.

Disconnect the seat drive plug connector in the longitudinal direction.

Use large nippers to cut the connecting shaft.

Unscrew the 2 nuts and remove the drive on the left and right. After this, the seat can be moved manually.

Bolt the seat rails to the seat frame at the front (for removal only).

Remove the seat and replace the tires.