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52 16 405 Replacing backrest cover on front left or right seat (sports/electric)

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Remove rear panel from front seat backrest, refer to REMOVING AND INSTALLING/REPLACING REAR PANEL ON FRONT LEFT OR RIGHT SEAT BACKREST (SPORTS/MANUAL)  .

Detach backrest cover (1) from backrest frame (2).

Fig 1: Detaching Backrest Cover From Backrest Frame
G03124973Courtesy of BMW OF NORTH AMERICA, INC.

Unhook ends of tensioning cord (1) from backrest frame (2).

Fig 2: Unhooking Ends Of Tensioning Cord From Backrest Frame
G03124974Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

  1. Pass tensioning cord (1) with backrest cover (3) on left/right round clip mount (2).
  2. Hook ends of tensioning cord to backrest frame, refer to previous work step.
    Fig 3: Installing Tensioning Cord To Backrest Frame
    G03124975Courtesy of BMW OF NORTH AMERICA, INC.

Installation instruction for backrest width adjustment: 

  1. Lay tension cables (1...2) underneath hoses (3) and cables (4).
    Fig 4: Laying Tension Cables Underneath Hoses & Cables
    G03124976Courtesy of BMW OF NORTH AMERICA, INC.

Exposing cable for seat heating on version with seat heating only: 

Removing outer cover on front seat:

Manual controls, refer to REMOVING AND INSTALLING / REPLACING OUTER COVER ON LEFT OR RIGHT FRONT SEAT BACK-REST (NORMAL / MANUAL)  .

Electrical controls, refer to REMOVING AND INSTALLING/REPLACING OUTER COVER ON FRONT LEFT OR RIGHT SEAT (SPORTS/ELECTRIC)  .

Unfasten plug connection (1).

Pull cable (2) out of holder (3).

Fig 5: Pulling Cable Out Of Holder
G03124977Courtesy of BMW OF NORTH AMERICA, INC.

Model with seat heating only:

Pull out tongue (1).

Pull cable (2) out of holder (3).

Fig 6: Pulling Cable Out Of Holder (Model With Seat Heating Only)
G03124978Courtesy of BMW OF NORTH AMERICA, INC.

Model with seat heating only:

Lift out Omega clip (1).

Pull out cable (2) from Omega clip (1).

Model with lumbar supports:

If necessary, disconnect plug connections (3) and (4).

Lift out Omega clip (1).

Fig 7: Pulling Out Cable From Omega Clip (Model With Seat Heating Only)
G03124979Courtesy of BMW OF NORTH AMERICA, INC.

Removal or replacement of backrest frame only: 

CAUTION: Do not under any circumstances turn screw underneath screw (2), this would destroy the seat frame.

Press backrest cover (1) to one side and release screw (2) on left/right.

Detach backrest frame (3) with backrest cover upwards.

Installation: 

  1. Replace screws (2) (microencapsulation).
  2. Tightening torque, refer to SEATS - TIGHTENING TORQUES - 3-SERIES .
Fig 8: Removing Backrest Frame
G03124980Courtesy of BMW OF NORTH AMERICA, INC.

Removal of backrest cover with padding or replacement of backrest frame only: 

Remove both guides for head restraint at front, refer to 52 13... Removing and installing/replacing guide for front left or right head restraint 

Version with lumbar support only:

Disconnect hoses (2) and (3) from valve housing (1).

NOTE: If necessary, gently heat air hose when firmly seated.
Valve housing must not be unclipped: leakage. If the valve housing is unclipped, release screw and clip valve housing together.

2 Hose (blue), top cushion

3 Hose (red), bottom cushion

Fig 9: Disconnecting Hoses From Valve Housing
G03124981Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: For purposes of clarity, shown here without valve housing.

Installation: 

  1. Observe cable guide (1) for backrest heating.
  2. Lay air hoses (2) without kinks through hole (3).
    Fig 10: Laying Air Hoses Without Kinks Through Hole
    G03124982Courtesy of BMW OF NORTH AMERICA, INC.

Version with lumbar support and backrest width adjustment only:

Detach hoses (1) and (2) at cutting line (heat with hot air blower if necessary).

  1. Lose (blue) upper cushion (lumbar support)
  2. Hose (red) lower cushion (lumbar support)
  3. Hose (white) right cushion (backrest width adjustment)
  4. Hose (white) left cushion (backrest width adjustment)
  5. Motor pump unit
    Fig 11: Detaching Hoses At Cutting Line
    G03124983Courtesy of BMW OF NORTH AMERICA, INC.

Detach backrest cover (1) at sides towards front and remove with support upwards from backrest frame (2).

Fig 12: Detaching Backrest Cover At Sides Towards Front
G03124984Courtesy of BMW OF NORTH AMERICA, INC.

Removal of backrest cover from padding, replacing padding: 

Release retainers (1) on left/right of backrest cover (2).

NOTE: Support (3) is reinforced in this area. Note routing of tensioning strap (4).
Fig 13: Releasing Retainers On Left/Right Of Backrest Cover
G03124985Courtesy of BMW OF NORTH AMERICA, INC.

First detach clips (1).

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

Fig 14: Folding Back Piping With Backrest Cover
G03124986Courtesy of BMW OF NORTH AMERICA, INC.

Detach all remaining clips.

Remove backrest cover (1) from padding.

Remove all remnants of retainers from backrest cover (1) and padding.

Fig 15: Removing All Remnants Of Retainers From Backrest Cover & Padding
G03124987Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

  1. Fold in new clip (2) with special tool 52 0 050.
    Fig 16: Folding In New Clip With Special Tool 52 0 050
    G03124988Courtesy of BMW OF NORTH AMERICA, INC.
  1. Support
  2. Retainer
  3. Trim thread in support
  4. Trim wire in backrest cover
  5. Backrest cover

Replacement of backrest cover: 

Pull trim threads (1) out of backrest cover.

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

2 Seat heater cable

Fig 17: Identifying Seat Heater Cable
G03124989Courtesy of BMW OF NORTH AMERICA, INC.
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