52 14... Additional work (normal/electric) with defective drive/gear for longitudinal adjustment

WARNING: This page is about a different car, the 2005 BMW 530i, 2005 BMW 525i, 2004 BMW 530i, and 2004 BMW 525i. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: Seat rails must be replaced by detaching worm gear.

Move seat height and seat tilt adjustment to top position.

To obtain improved access if necessary:

Release screws (1).
Tip seat towards rear.

Installation:

Tightening torque, see 52 10 6AZ in SEATS - TIGHTENING TORQUES - 525I & 530I (M54) .

Fig 1: Releasing Screws

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Lift drive (1) and flex shaft (3) out of guide (2) in direction of arrow.

Detach flex shaft (3) (plug connection).

Fig 2: Detaching Flex Shaft

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Release screws (1).

Remove drive (4).

Detach flex shaft (3) with holder (2).

Fig 3: Detaching Flex Shaft With Holder

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Activate the operating switch for the seat position adjustment:

No function:
- Disconnect plug connection on drive.
- Connect new drive and check function.
- Gear is O.K. if drive runs.
Drive running:
- Gear for longitudinal seat adjustment defective.

Removing gear for longitudinal seat adjustment:

Release screws (1).

Remove worm gear (2) on left and right with cover.

Fig 4: Removing Worm Gear On Left And Right With Cover

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Release screws (1) on upper rail on left and right.

NOTE:

The seat can now be adjusted together with the upper rail.

Remove front seat. See 52 13 000 Removing And Installing Left Or Right Front Seat (Normal/Semi-Electric) .

Replace both seat rails.

Fig 5: Replacing Both Seat Rails

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