61 31 009 Repairing steering column switch cluster (SZL)

WARNING: Move wheels into straight-ahead position and do not alter this position during the repair work.

IMPORTANT: Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC DISCHARGE (ESD PROTECTION) .

Necessary preliminary tasks:

Note on ordering:

IMPORTANT: Extreme cleanliness is required!

NOTE: Installation is described separately.

Removal:

Unlock retaining lugs on upper housing section (1) with a suitable tool.
Remove upper housing section.

Fig 1: Locating Retaining Lugs On Upper Housing Section
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IMPORTANT: Touch only the optical element.

NOTE: After removal, render optical element unusable and dispose of it in the appropriate manner.

Fig 2: Identifying Optical Element And Screw

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Fig 3: Repairing Steering Column Switch Cluster

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Unclip encoded disc (1) from rear of steering column switch cluster with plastic tube (2) supplied for the purpose.

In this process, hold encoded disc by inserting two fingers in the hole.

Fig 4: Removing Encoded Disc

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To prevent damage, tilt encoded disc (1) away from the printed circuit board when removing.

IMPORTANT: It is not permissible to clean the bearing points.

IMPORTANT: Make sure that encoded disc, optical element and printed circuit board do not come into contact with grease.

Apply grease supplied for the purpose to friction face (1) of bearing race of front of steering column switch cluster.

Fig 5: Identifying Steering Column Switch Cluster Friction Face Of Bearing Race

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Installation:

IMPORTANT: Thoroughly clean your hands before installation.
Before installing the new parts, put on gloves and hair net included in the repair kit!

Fig 6: Caution For Encoded Disc

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IMPORTANT: Not permitted!