When you press the defogger button, a signal is sent to the relay coil. In most Lanos models, this is managed by a timer (often integrated into the relay or ETACS module) that keeps the system on for ~10–15 minutes.
The system uses a applied to the inner surface of the rear glass. When current passes through these lines, they generate heat to clear fog or frost. Operating Voltage: 12V DC.
The grid is grounded on the opposite side of the window (usually the left or right pillar). 🔍 Troubleshooting & Common Issues If your defogger is not working, check these in order:
Heated Glass (Defrost, Defogger) Circuits: Overview & Testing
Parallel (each horizontal line acts as a separate branch).
