51 31 011 Replacing windscreen

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IMPORTANT:

The following notes form the basis for these repair instructions and must be adhered to at all times:

General instructions on window bonding:
- See SAFETY AT WORK

- See INFORMATION ON VEHICLE PROTECTION

- See MATERIALS FOR BONDING WINDOW

- See TOUCHING UP PAINTWORK DAMAGE

Remove with "SPIDER ".

The following new parts are required:

Material	Quantity
Windscreen	1
Cover, windscreen	1
Spacer buffer 5x5x20 mm	6
Small repair kit	1
Expanding foam tape	1

Necessary preliminary tasks:

Remove right COWL PANEL COVER
Remove COVER ON A-PILLAR on left/right
Remove WINDSCREEN RUBBER SURROUND
Remove TRIM PANELS FOR ROOF PILLAR at front
Remove MIRROR

Removal:

Depending on version:

Unplug plug connections (1 to 3).

Do not remount the rain-light solar and condensation sensor until after the windscreen is disassembled.

Remove CAMERA .

NOTE: Cables torn from the windscreen must not be soldered back in place. The windscreen must be replaced.

Pay attention to cable when cutting in this area.

Fig 1: Plug Connections

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Version with heated windscreen:

Disconnect plug connection (1).

Secure cable with adhesive tape to windscreen.

IMPORTANT: Pay attention to cable when cutting in this area.

Fig 2: Plug Connection

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IMPORTANT: Tape off body in area of piercing point with fabric adhesive tape.

Slide string out of "SPIDER " along line (1) through

Fig 3: Windscreen Adhesive Bead Line

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adhesive bead (2).

Cut out windscreen using "SPIDER ."

Remove the RAIN/LIGHT/SOLAR AND CONDENSATION SENSOR and immediately install on a new windscreen.

INSTALLATION:

Fitting spacer buffers (spacers):

IMPORTANT:

To avoid windscreen breakage and wind noises:

Completely remove remnants of removed spacer buffers and maintain installation location exactly.

Bond spacer buffer on mark on sheet metal flange.

Fig 4: Locating Spacer Buffers

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Overview of windscreen bonding:

Fig 5: Windscreen Bonding Dimensions

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Cut	A - A	B - B	C - C
a [mm] = Position adhesive bead	5 ±1	5 ±1	7 ±1
b [mm] = Width adhesive bead	8 ±1
h [mm] = Height adhesive bead	12 ±1

If necessary, install RUBBER FRAME (1), paying attention to center markings in so doing.

NOTE: A tolerance band is printed on the ceramic (two dashed lines) that marks the position of the adhesive bead. Place the adhesive bead in the outer area of the tolerance band.

Apply bead joint in area (2).

Fig 6: Positioning Windscreen Using Suction Cup (51 3 010)

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Perform the following steps carefully on the windscreen (1) using SUCTION LIFTER (51 3 010) :

Position at top
Align sides evenly
Insert at bottom and press down
Press upwards until rubber frame rests evenly on roof
Bond rubber frame on roof (see next operation)
secure in terms of height in this position at top with two yellow plastic adhesive tapes (2)

Remove liner (1) and bond rubber frame (2) on roof outer skin.

Fig 7: Liner And Bond Rubber Frame On Roof Outer Skin

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Only with camera-based driver support systems:

Carry out camera calibration via diagnosis system.

Under Service Functions menu:

Driver assistance
Camera-based driver assistance systems
Calibration of camera-based driver support systems