DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brake System (Front) - Service Information >> Front Brake >> Removal [11/2023 - ] >> Caution / Notice / Hint

Caution / Notice / Hint

The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during front brake removal/installation are shown below.

HINT: 

for HV Model 

When the cable is disconnected / reconnected to the auxiliary battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.

LEARNING COMPLETES WHEN VEHICLE IS DRIVEN

Effect/Inoperative Function when Necessary Procedure not Performed Necessary Procedure Link
Lane Control System Perform steering sensor zero point calibration Refer to INITIALIZATION [12/2019 - ]
Pre-collision System
Lighting System (EXT) (w/ AFS)
LEARNING COMPLETES WHEN VEHICLE IS OPERATED NORMALLY

Effect/Inoperative Function when Necessary Procedure not Performed Necessary Procedure Link
Power Door Lock Control System Initialize back door lock Refer to INITIALIZATION [11/2023 - ]
Power Back Door System Reset back door close position Refer to INITIALIZATION [11/2023 - ]
Air Conditioning System After the ignition switch is turned to ON, the servo motor standard position is recognized. -
NOTE:
  • Immediately after installing the brake pads, the braking performance may be reduced. Always perform a road test in a safe place while paying attention to the surroundings.
  • After replacing the front disc brake pads, the brake pedal may feel soft due to clearance between the front disc brake pads and front disc. Depress the brake pedal several times until the brake pedal feels firm.
  • After replacing the front disc brake pads, always perform a road test to check the braking performance and check for vibrations.
  • When removing or installing the front disc brake cylinder assembly, pushing back the disc brake piston may cause a large clearance between the brake pads and brake disc. When the brake pedal is depressed with a large clearance between the brake pads and the brake disc, DTC C13DB-00, C13DC-00, C13DD-00, C13DE-00, C1400-00 and/or C140A-00 related to abnormal brake fluid pressure may be stored. Make sure to clear any DTCs after performing this procedure. (for HV Model)
  • While the auxiliary battery is connected, even if the ignition switch is off, the brake control system activates when the brake pedal is depressed or any door courtesy switch turns on. Therefore, when servicing the brake system components, do not operate the brake pedal or open/close the doors while the auxiliary battery is connected. (for HV Model)
  • After the ignition switch is turned off, the radio and display receiver assembly records various types of memory and settings. As a result, after turning the ignition switch off, make sure to wait at least 2 minutes before disconnecting the cable from the negative (-) auxiliary battery terminal. (for HV Model)
  • When the cable is disconnected from the negative (-) auxiliary battery terminal and the security lock setting has been enabled, multi-display operations will be disabled upon next startup unless the password is entered. Be sure to check the security lock setting before disconnecting the cable from the negative (-) auxiliary battery terminal. (for HV Model)

HINT: