54 12 211 Removing and installing complete glass slide/tilt sunroof (frame)

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Special tools required:

54 1 120

IMPORTANT: Operations on pyrotechnical devices may only be carried out by authorized experts.
Improper, unauthorized operations may result in serious dangers.
Unauthorized persons are strictly prohibited from performing any operations on this system .

WARNING: Read and comply with SAFETY INFORMATION for handling airbag modules and pyrotechnical belt tensioners.
Incorrect handling can activate airbag and cause injury.
A damaged head airbag must be replaced.
A damaged head airbag exhibits an impaired protective function and in extreme cases loses its protective function altogether.

Necessary preliminary work:

Remove all HOLDER GRAB HANDLES .
Disconnect BATTERY EARTH LEAD .

NOTE:

Remove glass slide/tilt sunroof with aid of two people.

Installation note:

Powerlock screws must be replaced and must not be reused.
Powerlock screws are mechanical screw locks with trilobular threads.

Removing gas generator on left or right:

UNLOCK AND DISCONNECT connector (1) for gas generator.

Unfasten screws (2).

Tightening torque 72 12 02AZ .

Remove gas generator.

Installation note:

Gas generator is coded against incorrect assembly.

Fig 1: Identifying Gas Generator Connector And Screws

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Unlock plug connection (1) from front powertrain and disconnect.

Fig 2: Identifying Plug Connection

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Unlock plug connections (1) and disconnect.

Unclip all cable clips.

Installation note:

If necessary, replace cable clips.

Fig 3: Locating Cable Clips

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Fig 4: Locating Front And Rear Water Drain Hoses

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Pull off front and rear water drain hoses.
Helper must hold glass slide/tilt sunroof to prevent it falling out.
Release screws in marked area and carefully lower glass slide/tilt sunroof.

Installation note:

Screws have different lengths:

in area (1) = 17 mm

in area (2) = 23 mm

IMPORTANT: Do not damage any surrounding components when removing the glass slide/tilt sunroof.

Carefully remove glass slide/tilt sunroof from vehicle (through rear door).

Installation note:

Replace screws.

To stop creaking noises, secure all screws (1) prior to installation with plastic washers (2).

If the standard screws can no longer grip, use "repair screws" (have larger threads).

Fig 5: Identifying Plastic Washers And Screws

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Fig 6: Inserting Special Tool 54 1 120 Into Centering Bore Holes

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Installation note:

To align glass slide/tilt sunroof to body aperture, insert screws and tighten loosely.

Glass slide/tilt sunroof must still be able to move in the body aperture.

On account of leaks, glass slide/tilt sunroof must be exactly aligned to body aperture.

Insert special tool 54 1 120 into centering bore holes up to limit position in glass slide/tilt sunroof and body.

Tighten down screws.

Tightening torque 54 12 02AZ .

IMPORTANT: Do not crush any cables when installing the glass slide/tilt sunroof.

INITIALIZE glass slide/tilt sunroof.