52 14... Additional work in event of faulty drive/gearing for longitudinal adjustment

Release screws (1) of rockers for seat height adjustment.

Installation: 

Carefully bend side section back and feed rocker out of top rail.

Tilt front seat back.

Fig 1: Identifying Rocker Screws

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Unfasten plug connection (1) and disconnect.

Fig 2: Identifying Plug Connection

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Unclip central connector (2) from seat mechanism.

Unclip control units (1)  See 6135080 Removing and installing/replacing control unit/module for left or right seat adjustment or 6135095 Removing and installing/replacing control unit/module for seat heating .

Fig 3: Identifying Control Units And Seat Mechanism Central Connector

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Unfasten plug connection (1) and disconnect.

Fig 4: Identifying Plug Connection

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Bend metal tab (1) open.

Fig 5: Identifying Metal Tab

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Lift drive (1) and flex shaft (2) out of guide (4) in direction of arrow.

Detach drive (1) from rubber mounts (3).

Detach flex shaft (3) from drive (1).

Fig 6: Lifting Drive And Flex Shaft Out Of Guide

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Release screws (1) at front.

Fig 7: Identifying Seat Screws

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Installation: 

Install new drive for longitudinal seat adjustment.

Move front seat forwards.

Release screws (1) at rear.

Lift out front seat and assemble.

Fig 8: Identifying Seat Screws

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Installation: 

• Make sure flex shaft is correctly fitted on drive
• Carpet must not get between seat rails and floor pan in area of fastening points (grating noises)
• Powerlok screws must be replaced and must not  be reused
• Powerlok screws are mechanical screw locks with trilobular threads
• Insert all screws loose to avoid twisting
• Tighten down all screws to specified torque

Tightening torque 52 10 1AZ .