Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Audi S8FACTORY OEM SERVICE PROCEDURE
Overview - Windshield: Notes
The following dimensions represent the distances at the marked points. This must also be oriented to the layout of the original adhesive bead on the removed component.
- Windshield
- Removing and Installing. Refer to WINDSHIELD, REMOVING AND INSTALLING .
- Distance to roof frame: dimension -c- = 2.5 mm ± 0.5 mm
- Center the side distance to the A-pillars
- Windshield Defogger Control Module -J505-, Removing and Installing. Refer to Windshield Defogger Control Module -J505-, REMOVING AND INSTALLING .
- Adhesive Bead
- Observe minimum curing times. Refer to MINIMUM CURING TIMES FOR BONDED WINDOWS .
- Different distances to window edge:
- Dimension -a- = 7.0 mm
- Dimension -b- = 7.7 mm
- Dimension -d- = 7.8 mm
- Dimension -e- = 10.7 mm
- Dimension -f- = 7.8 mm
- Dimension -g- = 10.7 mm
- Adhesive bead thickness. Refer to Adhesive Application: .
- Positioning of the double adhesive bead Positioning of the Double Adhesive Bead
- Windshield Frame
- Drip Rail
- Removing and Installing. Refer to DRIP RAIL, REMOVING AND INSTALLING .
- Molding
- Plenum Chamber Cover
- Insert in the frame -item 8-
- Only press on until it stops after the minimum curing time for the adhesive.
- Windshield Adjusting Wedge
- Quantity: 2
- Remove before installing the plenum chamber cover -item 6-
- Plenum Chamber Cover Frame
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.