GENERAL
The rear window defogger wire (back door glass) is attached to the inside of the rear window and defogs the window surface quickly when the rear window defogger switch is pressed. The indicator light on the switch illuminates while the system is operating. This system automatically turns off after approximately 15 minutes.
If the auxiliary battery voltage becomes low, auxiliary battery load control will operate in order to ensure sufficient power is supplied to the power steering system. In this case, the window defogger system may not operate.
If both of the following conditions are met after approximately 15 minutes from when the window defogger system was activated, the window defogger system continues to operate up to approximately 45 minutes. If the following conditions are not met, the window defogger system stops operating immediately.*
*: for Gasoline Model
The outside temperature is -3°C (27°F) or lower.
Power generated by the generator assembly installed to the vehicle is stable.
The window defogger system is linked with the mirror heater function.
FUNCTION OF MAIN COMPONENT
| Component | Outline |
|---|---|
| Rear Window Defogger Switch (Air Conditioning Control Assembly) | Sends signals to the air conditioning amplifier assembly to operate the window defogger system. |
| Air Conditioning Amplifier Assembly | Sends signals to the main body ECU (multiplex network body ECU) to operate the window defogger system. |
| Main Body ECU (Multiplex Network Body ECU) | Sends a window defogger system activation request signal to the RR DEF relay (power distribution box assembly). |
| RR DEF Relay (Power Distribution Box Assembly) | Receives a window defogger system activation request signal from the main body ECU (multiplex network body ECU) and supplies power to the rear window defogger wire (back door glass). |
| Rear Window Defogger Wire (Back Door Glass) | Receives power from the RR DEF relay (power distribution box assembly) and heats the rear window using the rear window defogger wire (back door glass). |