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Home >> Lexus >> 2021 >> ES 250 Luxury >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brake System (Hydraulic) - Service Information (1 Of 2) >> BRAKE PEDAL (for Gasoline Model) >> Adjustment [06/2018 - 08/2020] >> Procedure

Adjustment [06/2018 - 08/2020]: Procedure

  1. INSPECT AND ADJUST BRAKE PEDAL HEIGHT 
    1. Remove the front door scuff plate LH.

      Refer to PROCEDURE - Step 4

    2. Remove the cowl side trim board LH.

      Refer to PROCEDURE - Step 5

    3. Remove the No. 1 instrument panel under cover sub-assembly.

      Refer to PROCEDURE - Step 15

    4. Remove the accelerator pedal pad.

      Refer to PROCEDURE - Step 3

    5. Remove the accelerator pedal assembly.

      Refer to PROCEDURE - Step 4

    6. Check the brake pedal height.

      HINT: 

      Inspect and adjust the brake pedal height with the floor carpet and front floor mat folded back.

      1. Measure the shortest distance between the brake pedal pad surface and floor panel as shown in the illustration.
        GTY765844Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *1 Brake Pedal Pad - -
        *a Brake Pedal Height *b Measuring Plane of Floor Panel
        *c 36 mm (1.42 in.) - -

        Brake Pedal Height from Floor Panel

        147.5 to 161.5 mm (5.81 to 6.36 in.)

        HINT: 

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

    7. Adjust the push rod length.
      1. Remove the stop light switch assembly.
        GTY804472Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *1 Lock Nut
        *2 Stop Light Switch Assembly
        *a Floor Panel
        *b Brake Pedal Height

        Refer to REMOVAL [06/2018 - ]

      2. Loosen the lock nut.
      3. Adjust the brake pedal height by turning the push rod.

        Brake Pedal Height from Floor Panel

        147.5 to 161.5 mm (5.81 to 6.36 in.)

      4. Tighten the lock nut.

        Torque: 26 N.m (265 kgf/cm, 19 ft.lbf) 

      5. Install the stop light switch assembly.

        Refer to INSTALLATION [06/2018 - ]

    8. Install the accelerator pedal assembly.

      Refer to PROCEDURE - Step 1

    9. Install the accelerator pedal pad.

      Refer to PROCEDURE - Step 2

    10. Install the No. 1 instrument panel under cover sub-assembly.

      Refer to PROCEDURE - Step 40

    11. Install the cowl side trim board LH.

      Refer to PROCEDURE - Step 32

    12. Install the front door scuff plate LH.

      Refer to PROCEDURE - Step 33

  2. INSPECT BRAKE PEDAL FREE PLAY 
    1. Stop the engine and firmly depress the brake pedal several times until no vacuum is left in the brake booster assembly.
    2. 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.)

      HINT: 

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

        Refer to PROCEDURE - Step 1

      • If the brake pedal free play is as specified, proceed to the Inspect Brake Pedal Reserve Distance procedure.
  3. INSPECT BRAKE PEDAL RESERVE DISTANCE 
    1. With the engine running, depress the brake pedal and measure the brake pedal reserve distance as shown in the illustration.
      GTY768091Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Brake Pedal Pad - -
      *a Brake Pedal Reserve Distance *b Measuring Plane of Floor Panel
      *c 36 mm (1.42 in.) - -

      Brake Pedal Reserve Distance from Floor Panel at 300 N (31 kgf, 67.4 lbf)

      81 mm (3.19 in.) or more

      HINT: 

      • Measure the distance at the same point used for the brake pedal height inspection.
      • If the distance is not as specified, troubleshoot the brake system.

        Refer to PROBLEM SYMPTOMS TABLE [06/2018 - ]

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