Installation [07/2022 - ]: Procedure

1. Align the matchmarks of the rear disc and rear axle hub and bearing assembly, and install the rear disc.
   NOTE:

   When replacing the rear disc with a new one, select the installation position where the rear disc has minimal runout.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a

   Matchmark

1. Install the rear disc brake cylinder mounting to the rear axle carrier sub-assembly with the 2 bolts.

   Torque: 107 N.m (1091 kgf/cm, 79 ft.lbf) 

1. Apply a light layer of lithium soap base glycol grease to the entire circumference of 2 new rear disc brake bushing dust boots.

   HINT: 

   Apply more than 0.3 g (0.01 oz.) of lithium soap base glycol grease to each rear disc brake bushing dust boot.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Lithium Soap Base Glycol Grease

2. Install the 2 rear disc brake bushing dust boots to the rear disc brake cylinder mounting.

1. Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Lithium Soap Base Glycol Grease

   Apply a light layer of lithium soap base glycol grease to the contact surface of the rear No. 2 disc brake cylinder slide pin.

2. Install a new rear disc brake cylinder slide bushing to the rear No. 2 disc brake cylinder slide pin.

3. Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Lithium Soap Base Glycol Grease

   Apply a light layer of lithium soap base glycol grease to the sliding part and the sealing surfaces of the rear No. 1 disc brake cylinder slide pin and rear No. 2 disc brake cylinder slide pin.

4. Install the rear No. 1 disc brake cylinder slide pin and rear No. 2 disc brake cylinder slide pin to the rear disc brake cylinder mounting.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *1	Rear No. 1 Disc Brake Cylinder Slide Pin
   *2	Rear No. 2 Disc Brake Cylinder Slide Pin

5. Push the rear No. 1 disc brake cylinder slide pin and rear No. 2 disc brake cylinder slide pin into each rear disc brake bushing dust boot to engage the pins to the boots.

1. Install the 4 rear disc brake pad support plates to the rear disc brake cylinder mounting.
   NOTE:

   Be sure to install each rear disc brake pad support plate in the correct position and direction.

Refer to PROCEDURE - Step 1

1. Install the 2 rear disc brake pads to the rear disc brake cylinder mounting.
   NOTE:

   Install the rear disc brake pad so that the rear disc brake pad wear indicator plate is mounted on the lower side of the vehicle.

   HINT: 

   If the rear disc brake pad has an identification mark, be sure to confirm the installation location.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Inner Side (Blue)
   *b	Outer Side (Green)

1. Hold the 2 rear disc brake cylinder slide pins, and install the rear disc brake cylinder assembly to the rear disc brake cylinder mounting with the 2 bolts in the order shown in the illustration.

   Torque: 34.3 N.m (350 kgf/cm, 25 ft.lbf) 

   Fig 1: Rear Disc Brake Cylinder Assembly Tightening Sequence

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Hold
   *b	Turn

1. Apply a light coat of lithium soap base glycol grease to a new O-ring.
2. Install the O-ring to the rear disc brake cylinder assembly.
   NOTE:

   Make sure to replace the O-ring with a new one when installing the parking brake actuator assembly.

3. Using a 5 mm hexagon socket wrench, install the parking brake actuator assembly to the rear disc brake cylinder assembly with the 2 bolts.

   Torque: 8.4 N.m (86 kgf/cm, 74 in.lbf) 

1. Connect the No. 2 parking brake wire assembly connector to the parking brake actuator assembly.

1. Connect the rear flexible hose to the rear disc brake cylinder assembly with a new union bolt and a new gasket.

   Torque: 30.4 N.m (310 kgf/cm, 22 ft.lbf) 

   NOTE:

   Install the rear flexible hose lock securely into the lock hole in the rear disc brake cylinder assembly.

1. Connect the reservoir level switch connector.
2. Connect the cable to the negative (-) auxiliary battery terminal.

   Refer to INSTALLATION [10/2018 - ]

3. Perform the following procedure if air bleeding is not necessary:
   1. Turn the power switch on (READY).
   2. Depress the brake pedal and release it.
   3. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [10/2018 - ]

Refer to BLEEDING [10/2018 - ]

HINT: 

• Use the same procedure for the RH side and LH side.
• The following procedure is for the LH side.
• While performing air bleeding of the rear disc brake cylinder assembly, the bolts can be reused during the bleeding procedure. After air bleeding is complete, replace the bolts with new ones.

1. Perform the procedure to enter rear disc brake pad replacement mode 5 times.

   Refer to UTILITY [08/2021 - ]

2. Release the parking brake.
3. Force air within the rear disc brake cylinder assembly to accumulate at the rear disc brake bleeder plug.(*1)
   1. Disable brake control.

      Refer to PROCEDURE - Step 2

   2. Disconnect the No. 2 parking brake wire assembly connector.

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   3. Hold the 2 rear disc brake cylinder slide pins and remove the 2 bolts and separate the rear disc brake cylinder assembly from the rear disc brake cylinder mounting.

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      *a	Turn
      *b	Hold

      NOTE:

      Keep the rear No. 2 disc brake cylinder slide pin free of foreign matter.

   4. Hold the rear disc brake cylinder assembly horizontally, then tilt it 45° toward the bleeder plug side as shown in the illustration.

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   5. Temporarily install the rear disc brake cylinder assembly to the rear disc brake cylinder mounting with the bolt.
   6. Connect the No. 2 parking brake wire assembly connector.
   7. Connect the reservoir level switch connector.
   8. Connect the cable to the negative (-) auxiliary battery terminal.

      Refer to INSTALLATION [10/2018 - ]

   9. Turn the power switch on (READY).
   10. Depress the brake pedal and release it.
   11. Apply the parking brake.
4. Enter ECB (Electronically Controlled Brake system) Invalid Mode.(*2)
   NOTE:

   • Performing the following procedure enters ECB (Electronically Controlled Brake system) Invalid Mode without using the Techstream.
   • ECB (Electronically Controlled Brake system) Invalid Mode allows the brake lines to be bled without using the Techstream.
   • The brake warning light blinks (yellow) to indicate that ECB (Electronically Controlled Brake system) Invalid Mode is selected.
   • Be sure to confirm that the brake warning light is blinking (yellow) throughout the brake line bleeding procedure.
   • If any of the following conditions are met, ECB (Electronically Controlled Brake system) Invalid Mode is canceled and the brake warning light (yellow) turns off. Do not allow ECB (Electronically Controlled Brake system) Invalid Mode to be canceled while bleeding the brake lines or DTCs may be stored.

     The shift lever is moved from P to any other position.

     The power switch is turned on (READY).

     The power switch is turned off.

     The parking brake is released.

     The vehicle speed is more than 0 km/h (0 mph).

   • Do not rotate any brake disc while ECB (Electronically Controlled Brake system) Invalid Mode is selected.
   • Although the brake warning light (yellow) will blink and a buzzer will sound while performing brake line bleeding, this is not a malfunction.
   1. Perform the procedure listed below within 1 minute.
      1. Turn the power switch on (IG) with the shift lever in P and parking brake applied.
      2. Move the shift lever to N and then depress the brake pedal more than 8 times within 5 seconds.
      3. Move the shift lever to P and then depress the brake pedal more than 8 times within 5 seconds.
      4. Move the shift lever to N and then depress the brake pedal more than 8 times within 5 seconds.
      5. Move the shift lever to P.
   2. Check that the brake warning light is blinking (yellow).

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      *a	Brake Warning Light (Amber)

5. Remove the brake master cylinder reservoir filler cap assembly.
6. Bleed the brake line.(*3)
   1. Remove the rear disc brake bleeder plug cap.
   2. Add brake fluid to the reservoir until the fluid level is between the MAX and MIN lines on the brake fluid reservoir.(*a)
      NOTE:

      • Make sure that there is sufficient brake fluid in the reservoir.
      • If brake fluid leaks onto any painted surface, immediately wash it off.
      • Do not remove the filter from the brake master cylinder reservoir and 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. Depress the brake pedal several times, and then loosen the bleeder plug with the pedal depressed.(*b)
   4. When fluid stops coming out, tighten the rear disc brake bleeder plug and release the brake pedal.(*c)
   5. Repeat steps (*a) through (*c) until there are no signs of air in the brake fluid.
7. Repeat steps (*1) through (*3) 3 times.
   NOTE:

   If there is still air in the system after performing steps (*1) through (*3) 3 times, repeat the steps (*1) through (*3) until the air has been bled.

8. Tighten the rear disc brake bleeder plug completely.

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

9. Install the rear disc brake bleeder plug cap to the rear disc brake bleeder plug.
10. Hold the 2 rear disc brake cylinder slide pins, and install the rear disc brake cylinder assembly to the rear disc brake cylinder mounting with a new bolt.

    Torque: 34.3 N.m (350 kgf/cm, 25 ft.lbf) 

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    *a	Turn
    *b	Hold

11. Inspect for brake fluid leaks.
12. Adjust the brake fluid level in the reservoir.

    Refer to ON-VEHICLE INSPECTION [10/2018 - ]

13. Install the brake master cylinder reservoir filler cap assembly.
14. Turn the power switch off.
15. Clear the DTCs.

    Refer to DTC CHECK / CLEAR [10/2018 - ]

Refer to INSTALLATION [10/2018 - ]

Refer to UTILITY [08/2021 - ]