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Home >> Lexus >> 2010 >> HS 250h >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brakes (Hydraulic) (Service Information) >> Brake Pedal >> Adjustment >> Adjustment

Brake Pedal: Adjustment: Adjustment

  1. INSPECT AND ADJUST BRAKE PEDAL HEIGHT 
    1. Check the brake pedal height.
      1. Turn back the carpet.
      2. Turn back the dash silencer from the slit provided on the dash silencer.
      3. Measure the shortest distance between the brake pedal surface and floor panel.
        Fig 1: Identifying Stop Light Switch Assembly, Clevis Lock Nut, Floor Panel & Brake Pedal Height
        GTY270645Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *1 Stop Light Switch Assembly
        *2 Clevis Lock Nut
        *3 Floor Panel
        *a Brake Pedal Height

        Brake Pedal Height from Floor Panel

        Brake Pedal Pad Pedal Height
        Rubber 127.7 to 137.7 mm (5.03 to 5.42 in.)
        Aluminum 129.7 to 139.7 mm (5.11 to 5.50 in.)
    2. Adjust the brake pedal height.
      1. Remove the stop light switch assembly. Refer toREMOVAL .
      2. Loosen the clevis lock nut.
      3. Adjust the brake pedal height by turning the push rod.
      4. Tighten the clevis lock nut.

        Torque: 26 N*m (260 kgf*cm, 19 ft.*lbf) 

      5. Install and adjust the stop light switch assembly. Refer toINSTALLATION .
  2. INSPECT AND ADJUST BRAKE PEDAL STROKE SENSOR ASSEMBLY  . Refer toINSTALLATION - Step 3
  3. INSPECT BRAKE PEDAL FREE PLAY 
    1. Depress the pedal until a slight resistance is felt. Measure the brake pedal free play as shown in the illustration.
      Fig 2: Identifying Brake Pedal Free Play
      GTY275213Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Brake Pedal Free Play

      Pedal free play

      1.0 to 6.0 mm (0.0394 to 0.236 in.)

      If the pedal free play is not as specified, check the stop light switch clearance. Refer toINSTALLATION - Step 1 . If the pedal free play is as specified, proceed toADJUSTMENT the Inspect Brake Pedal Reserve Distance procedure.

  4. 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 power switch on (READY), depress the brake pedal and measure the brake pedal reserve distance.

      Pedal Reserve Distance from Floor Panel at 196 N (20 kgf, 44.1 lbf)

      Brake Pedal Pad Pedal Reserve Distance
      Rubber More than 78.0 mm (3.07 in.)
      Aluminum More than 80.0 mm (3.15 in.)

      If the distance is not as specified, troubleshoot the brake system. Refer toPROBLEM SYMPTOMS TABLE .