LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2017 >> IS 300 F Sport >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brake System (Hydraulic) - Service Information >> Brake Pedal >> Adjustment [11/2021 - ] >> Procedure

Adjustment [11/2021 - ]: Procedure

  1. INSPECT AND ADJUST BRAKE PEDAL HEIGHT 

    HINT: 

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

    1. Check the brake pedal height.
      1. Measure the shortest distance between the brake pedal pad surface and floor panel.
        GTY1083200Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Clevis Lock Nut
        *b Stop Light Switch Assembly Lock Nut
        *c Floor Panel
        *d Brake Pedal Height

        Brake Pedal Height from Floor Panel

        Model Specified Condition
        for 2WD 158.4 to 168.4 mm (6.24 to 6.62 in.)
        for AWD 170.0 to 180.0 mm (6.70 to 7.08 in.)

        If the brake pedal height is incorrect, inspect and adjust the push rod length according to the procedure below.

    2. Adjust the push rod length.
      1. Disconnect the connector from the stop light switch assembly.
      2. Loosen the stop light switch assembly lock nut, and then turn the stop light switch assembly to allow for brake pedal free play.
      3. Loosen the clevis lock nut and adjust the brake pedal height by turning the push rod to achieve the correct height.

        Brake Pedal Height from Floor Panel

        Model Specified Condition
        for 2WD 158.4 to 168.4 mm (6.24 to 6.62 in.)
        for AWD 170.0 to 180.0 mm (6.70 to 7.08 in.)
      4. Tighten the clevis lock nut.

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

      5. Install the stop light switch assembly.

        Refer to INSTALLATION [04/2013 - ]

  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.)

      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 

    HINT: 

    Measure the distance at the same point used for the brake pedal height inspection.

    1. Release the parking brake.
    2. With the engine running, depress the brake pedal and measure the pedal reserve distance.

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

      Model Specified Condition
      2WD More than 97 mm (3.8 in.)
      AWD More than 107 mm (4.2 in.)