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Bleeding [08/2013 - ]

WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:

The Techstream must be used for air bleeding. If it is not used, the air bleeding will be incomplete, which is hazardous and may lead to an accident.

NOTE:
  • Perform air bleeding with the shift lever in P and the parking brake applied.
  • As brake fluid may overflow when bleeding, do not place the fluid can on the reservoir filler opening.
  • Perform air bleeding while maintaining the brake fluid level between the MIN/MAX level on the brake fluid reservoir.
  • Air bleeding will be difficult if the following occurs:
    1. The brake actuator hose (the hose between the brake booster pump assembly and brake master cylinder reservoir assembly) is higher than the fluid level and air enters the hose.
    2. During the air bleeding procedure, air enters the brake booster pump assembly while the pump motor is operating.
  • While performing air bleeding, the accumulator pressure drop may cause a buzzer to sound. As there is no problem, continue with the operation.
  • During air bleeding, DTCs for pressure sensor malfunctions, etc. may be stored. After air bleeding and if instructed in the procedures, clear the DTCs.
  • Release the parking brake during the linear valve offset calibration procedure.
  • 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.
  • When bleeding air, select the suitable work procedure according the table below.
    Replaced/Installed Item Work Procedure
    Flexible hose (front/rear) Bleed brake line
    Disc brake cylinder assembly (front/rear)
    Brake booster pump assembly Bleed brake system
    Brake booster with master cylinder assembly
    Brake master cylinder reservoir assembly
  1. BLEED BRAKE LINE 
    1. Bleed brake line.
      1. Remove the brake master cylinder reservoir filler cap assembly.
        Fig 1: Removing Brake Master Cylinder Reservoir Filler Cap
        GTY316685Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Add brake fluid into the reservoir between the MAX and MIN level on the brake fluid reservoir.

        Brake fluid

        SAE J1703 or FMVSS No. 116 DOT3

      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 bleed air from the brake fluid following the instructions on the Techstream.
      6. After air bleeding, tighten each bleeder plug.

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

      7. Clear the DTCs. Refer to DTC CHECK / CLEAR [08/2013 - ] .
      8. Turn the Techstream off and turn the power switch off.
    2. Inspect for brake fluid leaks.
    3. Install the brake master cylinder reservoir filler cap.
  2. BLEED BRAKE SYSTEM 
    1. Remove the front outer cowl top panel sub-assembly See step  4.
    2. Bleed the brake system.
      1. Wait at least 2 minutes with the power switch off, and disconnect the reservoir level switch connector.
        Fig 2: Identifying Reservoir Level Switch Connector
        GTY316768Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        NOTE:

        Do not depress the brake pedal or open/close the doors until the reservoir level switch connector is disconnected.

        HINT: 

        This procedure is not required if the reservoir level switch connector has been disconnected.

      2. Remove the brake master cylinder reservoir filler cap assembly.
        Fig 3: Removing Brake Master Cylinder Reservoir Filler Cap
        GTY316685Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Add brake fluid into the reservoir between the MAX and MIN level on the brake fluid reservoir.

        Brake fluid

        SAE J1703 or FMVSS No. 116 DOT3

      4. Connect the Techstream to the DLC3 and turn the power switch on (IG).
      5. Turn the Techstream on and enter the following menus: Chassis / ABS/VSC/TRAC / Air Bleeding.
      6. Select "ABS actuator has been replaced" on the Techstream display, and bleed air from the brake fluid following the instructions on the Techstream.
        NOTE:

        Before following the instructions on the Techstream to perform linear valve offset calibration, release the parking brake. When calibration is complete, immediately apply the parking brake.

      7. After air bleeding, tighten each bleeder plug.

        disc brake cylinder bleeder plug 

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

        stroke simulator bleeder plug 

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

        HINT: 

        The stroke simulator bleeder plug is positioned as shown in the illustration.

        Fig 4: Identifying Stroke Simulator Bleeder Plug
        GTY213457Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *1 Stroke Simulator Bleeder Plug
      8. Clear the DTCs. Refer to DTC CHECK / CLEAR [08/2013 - ] .
      9. Turn the Techstream off and turn the power switch off.
    3. Install the brake master cylinder reservoir filler cap.
    4. Inspect for brake fluid leaks.
    5. Install the outer cowl top panel sub-assembly See step  18.
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