Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: System Description

SYSTEM DESCRIPTION

GENERAL

(a) The rear window defogger wire (back window 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.

NOTICE:

If the battery voltage becomes low, 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.

HINT:

• 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.
  • 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