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: Adjusting Seat Height

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten plug connection (1) and disconnect.

Fig 2: Identifying Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.

Unclip central connector (2) from seat mechanism.

Unclip control units (1)  .

Fig 3: Identifying Central Connector And Control Units

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten plug connection (1) and disconnect.

Fig 4: Identifying Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.

Bend metal tab (1) open.

Fig 5: Identifying Metal Tab

Courtesy of BMW OF NORTH AMERICA, INC.

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: Detaching Drive From Rubber Mounts

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1) at front.

Fig 7: Identifying Seat Screws

Courtesy of BMW OF NORTH AMERICA, INC.

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

Courtesy of BMW OF NORTH AMERICA, INC.

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  , see 52 10 FRONT SEATS .