51 31 01 Replace windscreen (2' Series coupe and convertible, 2017-2021)

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

Notes on window bonding. Refer to TOUCHING UP PAINTWORK DAMAGE .
GENERAL PROCEDURE for dismantling/installation of affixed window glass

Removal is performed with ROLL OUT 2000 or SPIDER .

The following new parts/CONSUMABLES are required (sourcing reference BMW Group Parts).

Material	Quantity
Windscreen	1
Cover, windscreen	1
Spacer buffer 5x5x20 mm	5
Small repair kit	1
Sika Activator 205 (for windscreen cover)	1
Wire from Roll Out 2000	9 m
Expanding foam tape	1

Necessary preliminary work:

Refer to REMOVING COWL PANEL COVER .
Refer to REMOVING INSIDE MIRROR .
Refer to REMOVING TRIM PANEL FOR ROOF PILLAR (A-pillar) left/right

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.

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

Slide wire/cord out of ROLL OUT 2000 /SPIDER along the line (1) through the adhesive bead (2).

Cut out windscreen. Refer to REMOVING WINDOWS WITH A "SPIDER" .

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Fitting spacer buffers (spacers):

CAUTION: Spacer buffers are installed to avoid windscreen breakage and wind noises.
Completely remove old spacer buffers (2).
Position the new spacer buffers (2) in the center of the embossed marks (1) and bond.
Observe NOTES on component-bonding with adhesive tape!
Stick expanding foam tape onto the marked area (1) on the windscreen.

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Install the COVER/RUBBER FRAME (1) for the windscreen.

Pre-treat adhesive area with Sika-Aktivator 205.

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

Overview of windscreen bonding:

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Cut	A-A/B-B	C-C
a [mm] = Position adhesive bead	1 + 1	18+1
b [mm] = Width adhesive bead	8 ±2	8 ±2
h [mm] = Height adhesive bead	12 -2	12 -2

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.

x = approx. 300 mm (bead joint distance (1) to windscreen outer edge)

PREPARE the body and windscreen.

Perform the following steps carefully on the windscreen (1) using suction cup (51 3 010):

feed in on the bottom of the lower front side wall
Position at top
Align sides evenly
press upwards until sealing rests evenly on roof and apply pressure
Secure in terms of height in this position at top with two yellow plastic adhesive tapes (2)

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Positioning the windscreen at the top to avoid wind noises (F87 CS):

Check dimension (A) and dimension (B). Correct position of windscreen if necessary.

A= less than or equal to 4.5 mm

B= greater than or equal to 2.5 mm

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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