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Home >> Toyota >> 2021 >> Mirai Limited >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brake System (Hydraulic) - Service Information >> Brake Pedal >> Adjustment [11/2020 - 12/2023] >> Procedure

Adjustment [11/2020 - 12/2023]: Procedure

  1. INSPECT AND ADJUST BRAKE PEDAL HEIGHT 

    HINT: 

    • Inspect and adjust the brake pedal height with the floor carpet folded back.
    • Perform the inspection from the service hole in the dash panel insulator.
    1. Check the brake pedal height.
      1. Measure the shortest distance between the brake pedal pad surface and front floor footrest as shown in the illustration.
        GTY979022Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *1 Brake Pedal Pad - -
        *a Brake Pedal Height *b Measuring Plane of Front Floor Footrest
        *c 41 mm (1.61 in.) - -
        Service Hole - -

        Brake Pedal Height from Front Floor Footrest

        184.9 to 194.9 mm (7.28 to 7.67 in.)

        If the brake pedal height is not as specified, inspect and adjust the push rod length according to the procedure below.

    2. Adjust the push rod length.
      1. Remove the instrument panel safety pad sub-assembly.

        Refer to REMOVAL [11/2020 - 11/2021] , or refer to REMOVAL [11/2021 - 12/2022] , or refer to REMOVAL [12/2022 - 12/2023]

      2. Remove the steering column assembly.

        for Manual Tilt and Manual Telescopic Steering Column:

        Refer to REMOVAL [11/2020 - 11/2021] , or refer to REMOVAL [11/2021 - 12/2022] , or refer to REMOVAL [12/2022 - 12/2023]

        for Power Tilt and Power Telescopic Steering Column:

        Refer to REMOVAL [11/2020 - 11/2021] , or refer to REMOVAL [11/2021 - 12/2022] , or refer to REMOVAL [12/2022 - 12/2023]

      3. Remove the stop light switch assembly.

        Refer to REMOVAL [11/2020 - 12/2023]

        GTY980064Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *1 Lock Nut
        *2 Stop Light Switch Assembly
        *a Brake Pedal Height
      4. Loosen the lock nut and adjust the brake pedal height by turning the push rod to achieve the correct height.

        Brake Pedal Height from Front Floor Footrest

        184.9 to 194.9 mm (7.28 to 7.67 in.)

      5. Tighten the lock nut.

        Torque: 25.5 N.m (260 kgf/cm, 19 ft.lbf) 

      6. Install the stop light switch assembly.

        Refer to INSTALLATION [11/2020 - 12/2023]

      7. Install the steering column assembly.

        for Manual Tilt and Manual Telescopic Steering Column:

        Refer to INSTALLATION [11/2020 - 12/2022] , or refer to INSTALLATION [12/2022 - 12/2023]

        for Power Tilt and Power Telescopic Steering Column:

        Refer to INSTALLATION [11/2020 - 12/2022] , or refer to INSTALLATION [12/2022 - 12/2023]

      8. Install the instrument panel safety pad sub-assembly.

        Refer to INSTALLATION [11/2020 - 12/2022] , or refer to INSTALLATION [12/2022 - 12/2023]

  2. ADJUST BRAKE PEDAL STROKE SENSOR ASSEMBLY 

    Refer to PROCEDURE - Step 4 [11/2020 - 12/2022] , or refer to PROCEDURE - Step 4 [12/2022 - ]

  3. PERFORM CALIBRATION 

    Refer to UTILITY [11/2020 - ]

  4. INSPECT BRAKE PEDAL FREE PLAY 
    1. Depress the brake pedal until a slight resistance is felt. Measure the distance as shown in the illustration.
      GTY434038Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Brake Pedal Free Play

      Brake Pedal Free Play

      1.0 to 6.0 mm (0.0394 to 0.236 in.)

      If the brake pedal free play is not as specified, check the stop light switch clearance.

      Refer to INSTALLATION [11/2020 - 12/2023]

      If the brake pedal free play is as specified, proceed to the Inspect Brake Pedal Reserve Distance procedure.

  5. INSPECT BRAKE PEDAL RESERVE DISTANCE 

    HINT: 

    • Inspect and adjust the brake pedal height with the floor carpet folded back.
    • Perform the inspection from the service hole in the dash panel insulator.
    1. With the ignition switch on (READY), depress the brake pedal and measure the brake pedal reserve distance as shown in the illustration.
      GTY979022Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Brake Pedal Pad - -
      *a Brake Pedal Height *b Measuring Plane of Front Floor Footrest
      *c 41 mm (1.61 in.) - -
      Service Hole - -

      Brake Pedal Reserve Distance from Front Floor Footrest at 500 N (51 kgf, 112.4 lbf)

      105 mm (4.13 in.) or more