Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM100000002709U
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [09/2022 - 11/2022]
Title: WINDOW / GLASS: WINDOW DEFOGGER SYSTEM (for TMC Made): OPERATION CHECK; 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]

OPERATION CHECK

CHECK WINDOW DEFOGGER SYSTEM

NOTICE:

If the window defogger system is operated when the auxiliary battery voltage is low, due to the electrical load limit control that gives voltage supply priority to the power steering system, the window defogger system may not operate. In this case, check the vehicle control history (RoB) of the power steering system and check that "Battery Voltage Drop: X208F" is not stored before proceeding with troubleshooting.

for HV Model: Click here 2023 - 2025 MY Corolla Corolla HV [09/2022 -        ]; POWER ASSIST SYSTEMS: POWER STEERING SYSTEM (for HV Model): VEHICLE CONTROL HISTORY

for Gasoline Model: Click here 2023 MY Corolla Corolla Hatchback GR Corolla [09/2022 - 11/2022]; POWER ASSIST SYSTEMS: POWER STEERING SYSTEM (for Gasoline Model): VEHICLE CONTROL HISTORY

(a) Turn the ignition switch to ON.

(b) Check that the rear window defogger wire becomes warm by operating the rear window defogger switch of the air conditioning control assembly.

(c) When the vehicle is stopped, confirm that the window defogger system operation stops 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:

  • for Gasoline Model:

    If both of the following conditions are met approximately 15 minutes after the window defogger system was activated, the window defogger system will continue 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 is stable.
  • The window defogger system is linked with the mirror heater function.*
  • *: w/ Mirror Heater System