2. Minor track breaks can be repaired without removing the rear window.
Examination
3. To check the operation of the heater, start the engine and turn on the heater.
4. Connect with "weight" one test light wire and gently touch the other wire to each track.
5. The brightness of the lamp should increase as the wire moves over the element (see illustration). If the lamp burns equally brightly at both ends of the line, check the wire contact "masses". Each track must be tested in at least two places.
17.5a. When the heated rear window is working normally, the brightness of the lamp should change | 
17.5b. When heating filaments are checked from the side "masses", the lamp will be on: 1 - No light; 2 - Damaged mesh; 3 - Full brightness; 4 - "Weight"; 5 - "+"; 6 - Full glow |
Repair
6. To repair a broken track, it is recommended to use a special repair kit.
7. To repair, first turn off the heating and wait a few minutes.
8. Lightly polish the repaired element, then wipe it thoroughly with alcohol.
9. Use the repair kit in accordance with the instructions.
10. Thoroughly mix hardener and conductive compound.
11. Using a small wooden stick or spatula, apply the mixture between the strips of tape, lightly grabbing undamaged areas at both ends (see illustration).
17.11. To repair damaged tracks, stick a strip of tape on both sides of the mesh, then apply conductive compound with a small wooden stick or spatula: 1 - Material for repair; 2 - Two strips of tape; 3 - Wooden spatula
12. Carefully remove the tape and blow hot air directly onto the repaired area. It is recommended to use a hair dryer with a temperature of 260-375°C. Hold the hair dryer one inch away from the glass for two minutes.
13. If the composition changes color, you can use iodine infusion to clean it and restore color. This mixture should not remain on the repaired area for more than 30 seconds.
14. Although the heating system is fully operational, it should not be turned on for at least 24 hours.