Grid Filament Repair
WARNING: This page is about a different car, the 1992 Lexus SC 400, 1992 Lexus SC 300, 1992 Lexus LS 400, and 1992 Lexus ES 300. However, it is still accessible from the selected car via links, so may be relevant.
Clean broken wire tips thoroughly. Place masking tape along both sides of broken wire. See Fig 1. Apply Repair Paste (DuPont 4817) to broken section of grid. Remove masking tape after paste has dried. Wait 24 hours before using defogger.