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Brake Fluid: Bleeding

HINT:

If any work is performed on the brake system or if air in the brake lines is suspected, bleed the air from the brake system.

NOTE: Wash brake fluid off immediately if it adheres to any painted surface.
  1. FILL RESERVOIR WITH BRAKE FLUID 
    1. Fill the reservoir with brake fluid.

      Fluid: 

      SAE J1703 or FMVSS No. 116 DOT3 

  2. BLEED MASTER CYLINDER 

    HINT:

    If the master cylinder has been disassembled or if the reservoir has become empty, bleed the air from the master cylinder.

    Fig 1: Bleeding Master Cylinder
    G05001651Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the brake lines from the master cylinder.

      SST 09023-00101 

    2. Slowly depress and hold the brake pedal.
      Fig 2: Disconnecting Brake Lines From Master Cylinder
      G05001652Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Cover the outer holes with your fingers, and release the brake pedal.
    4. Repeat the above bleeding operation several times until the air in the master cylinder is temporary bled out.
    5. Connect the brake lines to the master cylinder.

      SST 09023-00101 

      Torque: 15 N*m (155 kgf*cm, 11 ft.*lbf) 

    Fig 3: Connecting Brake Lines To Master Cylinder
    G05001653Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. BLEED BRAKE LINE 
    1. Connect the vinyl tube to the bleeder plug.
    2. Depress the brake pedal several times, then loosen the bleeder plug with the pedal depressed.
    3. When fluid stops coming out, tighten the bleeder plug, then release the brake pedal. (Procedure line above "B")
    4. Repeat the above bleeding operation until all air in the fluid is completely bled out.
    5. Completely tighten the bleeder plug.

      Torque: 8.3 N*m (85 kgf*cm, 73 in.*lbf) 

      Fig 4: Bleeding Air Out Of Brake Line
      G05001654Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Repeat the above procedures for each wheel to bleed the air from the brake line.
  4. BLEED ABS & TRACTION ACTUATOR ASSEMBLY (w/VSC) 
    NOTE: After bleeding the air from the brake system, if the height or feel of the brake pedal cannot be obtained, bleed the air from the brake actuator assembly with a intelligent tester by following the procedures below.
    1. Depress the brake pedal more than 20 times with the engine off.
    2. Connect the intelligent tester to the DLC3, and turn the ignition switch on (IG).
      NOTE: Do not start the engine.
      Fig 5: Connecting Intelligent Tester To DLC3
      G05001655Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Select "AIR BLEEDING" on the intelligent tester.

      HINT:

      Refer to the intelligent tester operator's manual for further details.

    4. Bleed the air from the brake line when "Step 1: Increase" appears on the intelligent tester display.
      NOTE:
      • Bleed the air by following the steps displayed on the intelligent tester.
      • Make sure that the master cylinder reservoir tank does not become empty of brake fluid.
      1. Connect the vinyl tube to either one of the bleeder plugs.
      2. Depress the brake pedal several times, then loosen the bleeder plug connected to the vinyl tube with the pedal depressed.
      3. When fluid stops coming out, tighten the bleeder plug and release the brake pedal.
      4. Repeat the above bleeding operation until all air in the fluid is completely bled out.
      5. Tighten the bleeder plug completely.

        Torque: 8.3 N*m (85 kgf*cm, 73 in.*lbf) 

      6. Repeat the above procedures for each wheel to bleed the air from the brake line.
    5. Bleed the air from the suction line when "Step 2: Inhalation" appears on the intelligent tester display.
      NOTE:
      • Bleed the air by following the steps displayed on the intelligent tester.
      • Make sure that the master cylinder reservoir tank does not become empty of brake fluid.
      Fig 6: Bleeding Air Out Of Brake Line
      G05001654Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Connect the vinyl tube to the bleeder plug at the right front wheel or the right rear wheel and loosen the bleeder plug.
      2. Operate the brake actuator assembly to bleed the air using the intelligent tester.
        NOTE:
        • This operation stops automatically after 4 seconds.
        • At this time, be sure to release the brake pedal.
      3. Check if the operation has stopped by referring to the intelligent tester display.
      4. Repeat the above bleeding operation until all air in the fluid is completely bled out.
      5. Completely tighten the bleeder plug.

        Torque: 8.3 N*m (85 kgf*cm, 73 in.*lbf) 

      6. Repeat the above procedures to bleed the air from the brake line for each wheel.
    6. Bleed the air from the pressure reduction line when "Step 3: Decrease" appears on the intelligent tester display.
      NOTE:
      • Bleed the air by following the steps displayed on the intelligent tester.
      • Make sure that the master cylinder reservoir tank does not become empty of brake fluid.
      1. Connect the vinyl tube to either one of the bleeder plugs (Procedure " a").
      2. Loosen the bleeder plug.
      3. Using the intelligent tester, operate the brake actuator assembly, completely depress and hold the brake pedal (Procedure " b").
        NOTE:
        • This operation stops automatically after 4 seconds. When performing this procedure continuously, set an interval of at least 20 seconds.
        • When the operation is complete, the brake pedal goes down sightly. This is a normal phenomenon caused when the solenoid opens.
        • During this procedure, the pedal will feel heavy, but completely depress it so that the brake fluid comes out from the bleeder plug.
        • Be sure to keep the brake pedal depressed. Do not repeatedly depress and release the pedal.
      4. Tighten the bleeder plug, then release the brake pedal (Procedure " c").
      5. Repeat the above bleeding operation until all air in the fluid is completely bled out (See procedure " a" to "C").
      6. Completely tighten the bleeder plug.

        Torque: 8.3 N*m (85 kgf*cm, 73 in.*lbf) 

      7. Repeat the above procedures for each wheel to bleed the air from the brake line.
    7. Bleed the air from the brake line again when "Step 4: Increase" appears on the intelligent tester display.
      NOTE:
      • Bleed the air by following the steps displayed on the intelligent tester.
      • Make sure that the master cylinder reservoir tank does not become empty of brake fluid.
      1. Connect the vinyl tube to either one of the bleeder plugs.
      2. Depress the brake pedal several times, then loosen the bleeder plug connected to the vinyl tube with the pedal depressed.
      3. When fluid stops coming out, tighten the bleeder plug, then release the brake pedal.
      4. Repeat the above bleeding operation until all air in the fluid is completely bled out.
      5. Completely tighten the bleeder plug.

        Torque: 8.3 N*m (85 kgf*cm, 73 in.*lbf) 

      6. Repeat the above procedures for each wheel to bleed the air from the brake line.
    Fig 7: Connecting Vinyl Tube To Either One Of Bleeder Plugs
    G05001657Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. CHECK FLUID LEVEL IN RESERVOIR 
    1. Check the fluid level and add fluid if necessary.

      Fluid: 

      SAE J1703 or FMVSS No. 116 DOT3 

    Fig 8: Checking Fluid Level
    G05001658Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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