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Rear Window Defogger Grid Line Repair

WARNING: Materials contained in the Repair Kit (Part Number 04549275) may cause skin or eye irritation. The kit contains epoxy resin and amine type hardener, which are harmful if swallowed. Avoid contact with the skin and eyes. For skin contact, wash the affected areas with soap and water. For contact with the eyes, flush with plenty of water. Do not take internally. If taken internally, induce vomiting and call a physician immediately. Use with adequate ventilation. Do not use near fire or flame. Contains flammable solvents. Keep out of the reach of children. Failure to follow the warnings could result in possible personal injury or death.

Repair of the rear glass heating grid lines and bus bars can be accomplished using the Mopar(R) Rear Window Defogger Repair Kit (Part Number 04549275) or equivalent.

  1. Mask the repair area with masking tape or use a template so that the conductive epoxy can be applied neatly. See Fig 1. Extend the epoxy application onto the grid line or the bus bar on each side of the break.
  2. Follow the instructions in the repair kit for preparing the damaged area.
  3. Remove the package separator clamp and mix the two conductive epoxy components thoroughly within the packaging. Fold the package in half and cut the center corner to dispense the epoxy.
  4. Apply the epoxy through the slit in the masking tape or template. Overlap both ends of the break by at least 19 millimeters (0.75 inch).
  5. Carefully remove the masking tape or template.
    CAUTION: Do not allow the glass surface to exceed 204° C (400° F) when using a heat gun, or the glass may fracture.
  6. Allow the epoxy to cure 24 hours at room temperature, or carefully use a heat gun for fifteen minutes. When using a heat gun, hold it approximately 25.4 centimeters (10 inches) from the repair and do not allow the glass surface to exceed 204° C (400° F).
  7. After the conductive epoxy is properly cured, check the operation of the rear window defogger glass heating grid.
Fig 1: Repairing Grid Line - Typical
GC0002347Courtesy of DAIMLERCHRYSLER CORP.
1 - BREAK
2 - GRID LINE
3 - MASKING TAPE