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Brake Fluid: Replacement: Replacement

NOTE:
  • Perform fluid replacement with the shift lever in P and the parking brake applied.
  • As brake fluid may overflow when replacing brake fluid, do not stand the fluid can on the reservoir inlet.
  • Perform fluid replacement while maintaining the brake fluid level between the MIN and MAX lines on the brake fluid reservoir.
  • Replacing brake fluid will be difficult if the following occurs:
    1. The brake actuator hose (the hose between the brake booster pump assembly and brake fluid reservoir) is higher than the fluid level and air enters the hose.
    2. During the fluid replacement procedure, air enters the brake booster pump assembly while the pump motor is operating.
  • While performing fluid replacement, the accumulator pressure drop may cause a buzzer to sound. As there is no problem, continue with the fluid replacement.
  • During fluid replacement, DTCs for pressure sensor malfunctions, etc. may be stored. After fluid replacement and if instructed in the procedures, clear the DTCs.
  • Do not allow brake fluid to adhere to any painted surface such as the vehicle body. If brake fluid leaks onto any painted surface, immediately clean it off.

HINT: 

There are 2 ways of brake fluid replacement: using the Techstream or not using the Techstream.

  1. REPLACE BRAKE FLUID (for Using the Techstream) 
    NOTE:
    • Add brake fluid carefully and check that the fluid level remains between the MIN and MAX lines on the brake fluid reservoir.
    • Do not stand the fluid can on the reservoir inlet. Doing so will cause brake fluid to overflow.
    1. Remove the center cowl top ventilator louver.
      1. Disengage the 2 clips and the guide and separate the hood to cowl top seal.
        Fig 1: Identifying Hood To Cowl Top Seal Clips & Guide
        GTY388230Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Disengage the 2 claws and the 6 guides and remove the center cowl top ventilator louver.
        Fig 2: Identifying Center Cowl Top Ventilator Louver Claws & Guides
        GTY392794Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Replace brake fluid.
      1. Remove the brake master cylinder reservoir filler cap assembly.
        Fig 3: Identifying Brake Master Cylinder Reservoir Filler Cap Assembly
        GTY389584Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Add brake fluid into the reservoir between the MAX and MIN lines on the brake fluid reservoir.

        Brake fluid

        SAE J1703 or FMVSS No. 116 DOT3

        NOTE:

        Be sure to fill the brake master cylinder reservoir with new brake fluid to avoid any potential contamination of the brake system. Contamination, for example by dirt particles or mineral oil, could lead to functional brake problems.

      3. Connect the Techstream to the DLC3 and turn the power switch on (IG).
      4. Turn the Techstream on and enter the following menus: Chassis / ABS/VSC/TRAC / Air Bleeding.
      5. Select "Usual air bleeding" on the Techstream display, and replace the brake fluid following the instructions on the Techstream.
      6. After replacing brake fluid, tighten each bleeder plug.

        Front bleeder plug 

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

        Rear bleeder plug 

        Torque: 8.5 N*m (87 kgf*cm, 75 in.*lbf) 

      7. Install the brake master cylinder reservoir filler cap assembly.
    3. Clear the DTCs. Refer to DTC CHECK / CLEAR .
    4. Turn the Techstream off and turn the power switch off.
    5. Inspect for brake fluid leaks.
    6. Install the center cowl top ventilator louver.
      1. Engage the 2 claws and the 6 guides and install the center cowl top ventilator louver.
      2. Engage the 2 clips and the guide and install the hood to cowl top seal.
  2. REPLACE BRAKE FLUID (for not Using the Techstream) 
    NOTE:
    • Performing the following procedure will enable ECB (Electronically Controlled Brake system) Invalid Mode without using the Techstream.
    • ECB (Electronically Controlled Brake system) Invalid Mode allows the brake fluid to be replaced without using the Techstream.
    • The brake warning light / yellow will blink to indicate when ECB (Electronically Controlled Brake system) Invalid Mode is enabled.
    • Be sure to inspect that the brake warning light / yellow is blinking while replacing the brake fluid.
    • When one of the following conditions is met, ECB (Electronically Controlled Brake system) Invalid Mode is cancelled, and DTCs may be stored. Do not cancel ECB (Electronically Controlled Brake system) Invalid Mode while replacing brake fluid.
      The shift lever is moved to any other position from P.
      The power switch is turned to on (READY).
      The power switch is turned off.
      The parking brake is released.
      The vehicle speed is not 0 km/h (0 mph).
    • Do not rotate the front disc or rear drum while ECB (Electronically Controlled Brake system) Invalid Mode is enabled. If the front disc or rear drum is rotated, ECB (Electronically Controlled Brake system) Invalid Mode may be cancelled.
    • When replacing the brake fluid from the brake line, do not depress the brake pedal to operate the brake booster pump assembly for more than 100 seconds. If the brake booster pump assembly is operated for more than 100 seconds, ECB (Electronically Controlled Brake system) Invalid Mode is automatically finished and DTCs may be stored.
    • Add brake fluid carefully and check that the fluid level remains between the MIN and MAX lines on the brake fluid reservoir.
    • Do not stand the fluid can on the reservoir inlet. Doing so will cause brake fluid to overflow.
    1. Remove all 4 wheels.
    2. Enable ECB (Electronically Controlled Brake system) Invalid Mode.
      1. Perform the procedure listed below in 1 minute.
        1. Turn the power switch on (IG) with the shift lever in P and the parking brake applied.
        2. Move the shift lever to N and then depress the brake pedal more than 8 times in 5 seconds.
        3. Move the shift lever to P and then depress the brake pedal more than 8 times in 5 seconds.
        4. Move the shift lever to N and then depress the brake pedal more than 8 times in 5 seconds.
        5. Move the shift lever to P.
      2. Check that the brake warning light / yellow is blinking.
        Fig 4: Identifying Brake Warning Light / Yellow (Minor Malfunction)
        GTY283853Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *a Brake Warning Light / Yellow
    3. Remove the center cowl top ventilator louver.
      1. Disengage the 2 clips and the guide and separate the hood to cowl top seal.
        Fig 5: Identifying Hood To Cowl Top Seal Clips & Guide
        GTY388230Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Disengage the 2 claws and the 6 guides and remove the center cowl top ventilator louver.
        Fig 6: Identifying Center Cowl Top Ventilator Louver Claws & Guides
        GTY392794Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Replace the brake fluid.
      1. Remove the brake master cylinder reservoir filler cap assembly.
        Fig 7: Identifying Brake Master Cylinder Reservoir Filler Cap Assembly
        GTY389584Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Add brake fluid into the reservoir between the MAX and MIN lines on the brake fluid reservoir.

        Brake fluid

        SAE J1703 or FMVSS No. 116 DOT3

        NOTE:

        Be sure to fill the brake master cylinder reservoir with new brake fluid to avoid any potential contamination of the brake system. Contamination, for example by dirt particles or mineral oil, could lead to functional brake problems.

      3. Connect a vinyl tube to the bleeder plug of the front disc brake cylinder assembly RH.
      4. Depress the brake pedal several times, and then loosen the bleeder plug with the pedal depressed.*1
      5. When fluid stops coming out, tighten the bleeder plug, and then release the brake pedal.*2
      6. Repeat *1 and *2 until all the air in the brake fluid is completely bled out and new brake fluid comes out.
      7. Tighten the bleeder plug completely.

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

      8. Replace the brake fluid from the front disc brake cylinder assembly LH using the same procedure as for the RH side.
      9. Connect a vinyl tube to the bleeder plug of the rear wheel cylinder assembly LH.
      10. Loosen the bleeder plug while depressing and holding the brake pedal, and replace the brake fluid with the brake booster pump assembly and solenoid operating.*3
        NOTE:
        • Be sure to keep the brake pedal depressed.
        • Do not depress the brake pedal to operate the brake booster pump assembly for more than 100 seconds. When performing this procedure continuously, release the brake pedal to stop the brake booster pump assembly operating and depress the brake pedal again.
      11. Tighten the bleeder plug, then release the brake pedal.*4
      12. Repeat *3 and *4 until all the air in the brake fluid is completely bled out and new brake fluid comes out.
      13. Tighten the bleeder plug completely.

        Torque: 8.5 N*m (87 kgf*cm, 75 in.*lbf) 

      14. Replace the brake fluid from the rear wheel cylinder assembly RH using the same procedure as for the LH side.
      15. Turn the power switch off.
    5. Inspect for brake fluid leaks.
    6. Adjust the brake fluid level in the reservoir See step  2.
    7. Install the brake master cylinder reservoir filler cap.
    8. Install the center cowl top ventilator louver.
      1. Engage the 2 claws and the 6 guides and install the center cowl top ventilator louver.
      2. Engage the 2 clips and the guide and install the hood to cowl top seal.
    9. Install the 4 wheels.

      Torque: 103 N*m (1050 kgf*cm, 76 ft.*lbf) 

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