52 16 405 Replacing backrest cover for left or right front seat (M3 sport seat)

Special tools required: 

• 52 0 050 

See SEATS - SPECIAL TOOLS .

Necessary preliminary tasks: 

• Remove front seat  
• Remove guide sleeves  
• E90 only: 

  Remove cover for release mechanism 

Unfasten plug connection (1) and disconnect.

Disconnect cable tie (2) for seat heating.

Disengage wiring harness for seat heating from cable holders on seat mechanism.

Fig 1: Identifying Plug Connection And Cable Tie

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Detach backrest cover (1) from backrest frame.

Fig 2: Detaching Backrest Cover From Backrest Frame

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E90 only: 

Detach backrest cover in marked area.

Fig 3: Identifying Backrest Cover In Marked Area

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Padding is reinforced at corner points (1) and is guided under Bowden cable clip (2).

Installation: 

Engage reinforcement (1) in Bowden cable clip (2).

Fig 4: Identifying Cable Clip And Reinforcement

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Pull off backrest cover (1) with padding sideways and towards top from backrest frame (2).

Fig 5: Pulling Backrest Cover

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Loosen retainers (1).

Fold back welt (2) with backrest cover (3).

Fig 6: Identifying Retainers And Back Welt With Backrest Cover

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Release all retainers in marked area.

Remove backrest cover (1) from padding.

Fig 7: Identifying Retainers In Marked Area

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Installation: 

Bend new retainer (2) with special tool 52 0 050  .

1. Padding
2. Retainer
3. Trim wire in padding
4. Trim wire in backrest cover
5. Backrest cover

Fig 8: Bending Retainer With Special Tool (52 0 050)

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Replacement of backrest cover: 

Pull trim wires (1) out of backrest cover.

Cut new backrest cover to size and insert trim wires (1).

Fig 9: Pulling Trim Wires Out Of Backrest Cover

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