52 16 400 Replacing seat cover for left or right front seat (sports/electric)

WARNING: This page is about a different variant/trim than selected.

Removing Carrier For Actuation:

Remove outer cover with switch combination, refer to 52 16 040 REMOVING AND INSTALLING/REPLACING OUTER COVER ON FRONT LEFT OR RIGHT SEAT (SPORTS/ELECTRIC) .

Version with seat heating:

Disconnect plug connection (1) if necessary.

Unfasten cable clip (2).

Detach cable (3) from holder (4).

Fig 1: Unfastening Cable Clip And Cable From Holder

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Version with seat heating:

Detach cable (1) from holder (2).

Fig 2: Detaching Cable From Holder

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Release screw (1) on inside/outside.

Unclip clips (3) towards bottom and pull trim (2) out a little.

Fig 3: Locating Screw On Inside/Outside

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Release screws (1).

Pull trim (2) out a little and release screw (3).

Unclip clip (5) from holder (4).

Remove trim (2) and holder (4).

Fig 4: Unclipping Clip From Holder

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Installation:

Cable holders (1) on holder (2) must not be damaged.

Fig 5: Identifying Cable Holders

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Installation:

Clips (1) on sports seat trim (2) must not be damaged.

Fig 6: Locating Clips On Sports Seat Trim

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NOTE: The operation "Removing holder for actuation" ends here.

Removing Complete Seat Cover:

Remove inner cover, refer to 52 13 041 REMOVING AND INSTALLING/REPLACING INNER COVER ON LEFT OR RIGHT FRONT SEAT BACKREST (NORMAL/MANUAL) .

Remove front seat, refer to 52 14 000 REMOVING AND INSTALLING LEFT OR RIGHT FRONT SEAT (NORMAL/ELECTRIC) .

Version with seat occupancy detector:

If necessary, disconnect plug connection (1) from control unit (2).

Fig 7: Disconnecting Plug Connection From Control Unit

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Version with seat heating:

If necessary, unlock catches (1) and detach plug housing (2).

Fig 8: Unlocking Catches And Detaching Plug Housing

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Version with seat heating:

If necessary, press catch (1) downwards and detach cover (2).

Fig 9: Pressing Catch And Detaching Cover

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Version with seat heating:

Disconnect plug connection (1) of seat heater from plug housing (2).

Fig 10: Disconnecting Plug Connection Of Seat Heater From Plug Housing

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

Fig 11: Locating Screw Under Backrest Cover

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Installation:

Replace screw (2) (microencapsulation) and observe tightening torque 52 10 2AZ in SEATS - TIGHTENING TORQUES .

CAUTION: Do not turn screw underneath screw (2) (risk of damage).

Remove complete backrest (3) in direction of arrow.

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

Fig 12: Detaching Seat Cover From Seat Frame

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Pull out cover piping (1) completely from seat frame (2).

Fig 13: Removing Cover Piping From Seat Frame

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Unfasten thigh support and pull completely towards front.

Bend open retaining plates (1) and remove cover piping (2).

Fig 14: Bending Open Retaining Plates

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NOTE: Cushion (1) is secured at front with double-sided adhesive tape (3) to holder (2).

Pull cushion (1) towards top off holder (2).

Fig 15: Pulling Cushion Top Off Holder

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Lever trim wire (1) out of mounts (2).

Fig 16: Removing Trim Wire From Mounts

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Installation:

Stick new double-sided adhesive tape (4) to holder (3) or attach mount with spray adhesive.

Model without seat heating and without seat occupancy detector:

Remove seat cover (1) with thigh support (2) towards front/top.

Fig 17: Removing Seat Cover With Thigh Support

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Model with seat heating and/or with seat occupancy detector:

Pull seat cover (1) forward a little and feed cable (2) out.

Remove seat cover (1) with thigh support towards front/top.

Fig 18: Pulling Seat Cover Forward

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NOTE: The operation "Removing complete seat cushion" ends here.

Replacing Padding Or Sensor Mat:

Release clips (1) and (2) at rear left/right from padding (3).

Fig 19: Releasing Clips From Padding

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Release all clips (1) on left/right and (2) center from padding (3).

Fig 20: Releasing Clips On Left/Right And Center From Padding

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Version with seat heating:

Installation:

Note routing of seat heater cable (1).

Do not damage with clips.

Fig 21: Identifying Routing Of Seat Heater Cable

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Release all retainers.

Remove seat cover from support (foam rubber section).

Remove all remnants of retainers from seat cover and support.

Fig 22: Locating Seat Cover Retainers

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Remove padding (1) from seat cover (2).

Fig 23: Removing Padding From Seat Cover

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Version with seat heating:

Installation:

If necessary, detach heating mat (1) from adhesive tape (2) of thigh support.

(3) Seat heater cable.

Fig 24: Identifying Heating Mat, Cable And Adhesive Tape

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Stick double-sided adhesive tape (2) to padding (1) or coat with spray adhesive.

Fig 25: Attaching Double-Sided Adhesive Tape To Padding

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Version with seat heater and/or with seat occupancy detector:

Installation:

Feed seat heater cable (1) through bore (3).

Feed seat heater cable (2) through bore (4).

Fig 26: Installing Seat Heater Cable

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Installation:

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

Support.
Retainer.
Trim thread in support.
Trim thread in cover.
Seat cover.

Fig 27: Installing Clips Using Special Tool

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Installation:

The padding (2) is coated with wax (1) to prevent grinding noises.

Do not remove wax (1) on support (2).

Fig 28: Identifying Wax On Support And Padding

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Passenger seat only (replacing support):

Installation:

Make sure foam is not extensively damaged (malfunction of passenger seat occupancy detector).

Lay sensor mat connection without creasing into groove on padding.

Fit new sensor mat (1) for passenger seat occupancy detector.

Align new sensor mat (1) on foam (2). Feed plug (3) through hole (4).

Fig 29: Aligning Sensor Mat On Foam

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Installation:

Detach liner (1) at individual points and stick sensor mat (2) onto foam (3).

Liner is the protective film on adhesive area.

Fig 30: Detaching Liner At Individual Points

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NOTE: The operation "Replacing padding or sensor mat" ends here.

Replacing Seat Cover:

Pull trim threads (1) out of seat cover (2).

Cut new seat cover (2) to size and insert trim threads (1).

(3) Seat heater cable.

Fig 31: Removing Trim Threads Out Of Seat Cover

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