Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM1000000025DV3
Model Year Start: 2023 Model: Corolla Prod Date Range: [09/2022 -           ]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model): Brake Hold Operated Indicator Light Circuit; 2023 - 2025 MY Corolla Corolla HV [09/2022 -        ]

Brake Hold Operated Indicator Light Circuit

DESCRIPTION

The brake hold operated indicator light illuminates when the brake hold system is operating (vehicle stopped due to brake fluid pressure hold) and turns off when the brake hold system operation is finished (brake fluid pressure decreases).

The brake hold system may not operate depending on vehicle conditions even when the system is in standby mode and the brake hold standby indicator light is illuminated.

If there is a system malfunction that causes brake hold control to be prohibited, when the vehicle is under the following conditions and the brake hold switch (electric parking brake switch assembly) is pressed, the brake hold operated indicator light blinks.

  • Vehicle Conditions:
    1. The driver door is closed.
    2. The driver seat belt is fastened.

HINT:

  • When the ignition switch is turned off during brake hold operation, control stops.
  • If brake hold control does not operate even when the vehicle stops, depress on the brake pedal again firmly to stop the vehicle.

    If brake hold control still does not operate, confirm the conditions for brake hold control to operate.

PROCEDURE

1.

PRE-CHECK

(a) Check that the brake hold standby indicator light operates normally.

Click here 2023 - 2025 MY Corolla Corolla HV [09/2022 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model): Brake Hold Standby Indicator Light Circuit

(b) If the brake hold operated indicator light does not illuminate even though the brake hold standby indicator light is illuminated, check that the following brake hold operation (brake fluid pressure is being maintained ) conditions are met.

  1. System is in operation standby state (brake hold standby indicator light is illuminated).
  2. Shift position is not P or R.
  3. Driver is depressing brake pedal and vehicle is fully stopped.
  4. Driver is not depressing accelerator pedal.
  5. Vehicle is not on steep decline.
  6. The parking brake is not engaged.

HINT:

If a malfunction occurs in one of the following systems, the brake hold operated indicator light will blink. If this occurs, perform troubleshooting on the malfunctioning system.

  • Electronically controlled brake system
  • Electric parking brake system
  • Hybrid control system
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INSPECT METER / GAUGE SYSTEM 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM (except 12.3 Inch Display): HOW TO PROCEED WITH TROUBLESHOOTING 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM (except 12.3 Inch Display): HOW TO PROCEED WITH TROUBLESHOOTING