When replacing the seat frame: Remount mounted parts

NOTE: Schematic diagram is for example purposes. Some parts may differ in certain details.

Removing the adjuster for the thigh support

Detach spring package (1).
Loosen screws (2) with nuts.
Unclip wiring harness (3).
Unlock plug connection (4) and disconnect.

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Loosen screws (1) and (2).
Remove adjuster (3).

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Detach spring package (1) from the adjuster (2).

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Unlock the retaining lugs (1).
Pull the SMFA control unit (2) forward.

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Remove the seat height adjustment drive
Loosen screws (1).

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Loosen screw (1).
Unlock plug connection (2) and disconnect.
Remove the seat height adjustment (3) drive.

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Remove drive for the forward/back seat adjustment

Prerequisite

The front seat is adjusted completely to the top.
Unlock plug connection (1) and disconnect.
Unclip the cable clip (2) from the carrier plate.

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Unlock the retaining tabs (1) and remove the holder (2).

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Unclip the guide tube (1) from the carrier plate (2).

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Carefully bend the guide tube (1) up until you can pull the guide tube out of the drive (2).
Do not bend the drive (2) too far up; otherwise, the guide pins in the carrier plate (3) may be damaged.
Feed the guide tube (1) and the drive (2) out of the carrier plate (3).

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Remove the drive for the seat angle adjustment

Prerequisite

Front seat is fully upwards.
Loosen nuts (1).
Loosen screw (2).
Unlock plug connection (3) and disconnect.
Remove the drive for the seat angle adjustment (4).

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If necessary, remount the small parts.
Installing the drive for the seat angle adjustment

Prerequisite

The front seat is adjusted completely to the top.
Correctly position the drive for the seat angle adjustment (4).

Tighten the nuts (1) and bolts (2).

TIGHTENING TORQUES SPECIFICATION

Drive for seat cushion tilt adjustment to seat
Nut M6	Tightening torque	14 Nm
Stud	Tightening torque	8 Nm

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Connect connector (3).
Installing forward/back seat adjustment drive unit

Prerequisite

The front seat is adjusted completely to the top.
Insert the connecting shaft (1) into the transmission of the forward/back adjustment.

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Insert the drive (1) in the direction of the arrow and align it to the guide pins.

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Slice the drive (1) onto the short connecting shaft (2) without great effort and position it.
Press the short connecting shaft slightly up from the bottom and align it to the drive (1).
Insert the drive (1) completely.
If necessary, use the long connecting shaft (3) to turn the drive (1) somewhat until it can be aligned and moved to the short connecting shaft (2).

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Insert the long connecting shaft (1) with the guide tube (2) into the transmission of the forward/back adjustment.

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Raise the drive (1) slightly.
Do not lift the drive (1) too far up; otherwise, the guide pins in the carrier plate may be damaged.
Bend the guide tube (2) carefully and insert with the sleeve (3) into the drive (1).

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Clip the guide tube (1) and drive into the carrier plate (2).

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Insert holder (2).
Make sure the retaining tabs (1) are correctly fitted in the holder (2).

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Connect connector (1).
Clip cable clip (2) into the carrier plate.

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Installing the drive for the seat height adjustment
Correctly position the drive for the seat height adjustment (3).

Tighten down screw (1).

TIGHTENING TORQUES SPECIFICATION

Drive for seat height adjustment to seat
M6	Tightening torque	14 Nm
M8	Tightening torque	18 Nm

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Connect connector (2).

Tighten the screws (1).

TIGHTENING TORQUES SPECIFICATION

Drive for seat height adjustment to seat
M6	Tightening torque	14 Nm
M8	Tightening torque	18 Nm

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Press the SMFA control unit (2) into the holder until the retaining lugs (1) engage.

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Installing the adjuster for the thigh support
Attach spring packet (1) to adjuster (2).

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Position adjuster (3).

Tighten threaded bolt (2).

TIGHTENING TORQUES SPECIFICATION

Drive for seat cushion tilt adjustment to seat
Nut M6	Tightening torque	14 Nm
Stud	Tightening torque	8 Nm

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Tighten threaded bolt (1).

TIGHTENING TORQUES SPECIFICATION

Exhaust camshaft adjuster for thigh support
Nut M6	Tightening torque	7 Nm
Stud	Tightening torque	15 Nm

Counter support bolts (2) and tighten the associated nuts.

TIGHTENING TORQUES SPECIFICATION

Exhaust camshaft adjuster for thigh support
Nut M6	Tightening torque	7 Nm
Stud	Tightening torque	15 Nm

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Connect connector (4).
Clip in wiring harness (3).
Attach spring packet (1).