Installation [12/2019 - ]: 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: 150 N.m (1530 kgf/cm, 111 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.

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 2 bolts.

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

   NOTE:

   If bleeding of air from the rear brake cylinder assembly will be performed, reuse the bolts. If bleeding of air from the rear brake cylinder assembly will not be performed, install new bolts.

Refer to PROCEDURE - Step 1

Refer to PROCEDURE - Step 2

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. Install the brake master cylinder reservoir assembly to the reservoir bracket with the bolt and nut.

   Torque: 9.0 N.m (92 kgf/cm, 80 in.lbf) 

3. Engage the clamp to install the wire harness to the brake master cylinder reservoir assembly.
4. Connect the cable to the negative (-) auxiliary battery terminal.

   Refer to PROCEDURE - Step 2 [12/2019 - 11/2023] , or refer to PROCEDURE - Step 2 [11/2023 - ]

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

      Refer to DTC CHECK / CLEAR [12/2019 - ]

for HV Model: Refer to BLEEDING [12/2019 - ]

for Gasoline Model: Refer to BLEEDING [12/2019 - 10/2022] , or refer to BLEEDING [10/2022 - ]

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 TEST MODE PROCEDURE [12/2019 - ]

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

   Refer to PROCEDURE - Step 4

4. 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. (*1)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Turn
   *b	Hold

5. Hold the rear disc brake cylinder assembly horizontally, then tilt it 45° toward the bleeder plug side as shown in the illustration. (*2)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

6. Temporarily install the rear disc brake cylinder assembly to the rear disc brake cylinder mounting with the 2 bolts. (*3)
7. Remove the brake master cylinder reservoir filler cap assembly.
8. Add brake fluid to keep the level between the MIN and MAX lines of the reservoir while bleeding the brakes.
   NOTE:

   • Make sure that there is sufficient brake fluid in the reservoir.
   • Do not remove the filter from the brake master cylinder reservoir assembly and be sure to fill the brake master cylinder reservoir assembly 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.
   • If brake fluid leaks onto any painted surface, immediately wash it off.
9. Remove the rear disc brake bleeder plug cap.
10. Connect a vinyl tube to the rear disc brake bleeder plug.
11. Depress the brake pedal several times, and then loosen the rear disc brake bleeder plug with the pedal depressed. (*4)
12. When fluid stops coming out, tighten the rear disc brake bleeder plug and release the brake pedal. (*5)
    NOTE:

    Repeat steps (*4) through (*5) until there are no signs of air in the brake fluid.

13. Repeat steps (*1) through (*5) 3 times.
    NOTE:

    If there is still air in the system after performing steps (*1) through (*5) 3 times, repeat the steps (*1) through (*5) until the air has been bled.

14. Tighten the rear disc brake bleeder plug completely.

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

15. Install the rear disc brake bleeder plug cap to the rear disc brake bleeder plug.
16. 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 2 new bolts.

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

17. Connect the No. 2 parking brake wire assembly connector.

    Refer to PROCEDURE - Step 2

18. Inspect for brake fluid leaks.
19. Inspect the brake fluid level in the reservoir.

    Refer to ON-VEHICLE INSPECTION [12/2019 - ]

20. Install the brake master cylinder reservoir filler cap assembly.

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 TEST MODE PROCEDURE [12/2019 - ]

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.

      See step  4 [12/2019 - 10/2022], or see step  4 [10/2022 - 11/2023], or see step  4 [11/2023 - ]

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

      Refer to PROCEDURE - Step 4

   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

   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 2 bolts.
   6. Connect the No. 2 parking brake wire assembly connector.

      Refer to PROCEDURE - Step 2

   7. Connect the reservoir level switch connector.
   8. Install the brake master cylinder reservoir assembly to the reservoir bracket with the bolt and nut.

      Torque: 9.0 N.m (92 kgf/cm, 80 in.lbf) 

   9. Engage the clamp to install the wire harness to the brake master cylinder reservoir assembly.
   10. Connect the cable to the negative (-) auxiliary battery terminal.

       Refer to PROCEDURE - Step 2 [12/2019 - 11/2023] , or refer to PROCEDURE - Step 2 [11/2023 - ]

   11. Turn the ignition switch to ON (READY).
   12. Depress the brake pedal and release it.
   13. Apply the parking brake.
4. Enter ECB (Electronically Controlled Brake system) Deactivate Mode. (*2)
   NOTE:

   • Performing the following procedure enters ECB (Electronically Controlled Brake system) Deactivate Mode without using the GTS.
   • ECB (Electronically Controlled Brake system) Deactivate Mode allows the brake lines to be bled without using the GTS.
   • The brake warning light blinks (yellow) to indicate that ECB (Electronically Controlled Brake system) Deactivate 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) Deactivate Mode is canceled and the brake warning light (yellow) turns off. Do not allow ECB (Electronically Controlled Brake system) Deactivate 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 ignition switch is turned to ON (READY).

     The ignition 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) Deactivate 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 ignition switch to ON 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 (Yellow)

5. Bleed the brake line. (*3)
   1. Remove the brake master cylinder reservoir filler cap assembly.

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   2. Remove the rear disc brake bleeder plug cap.
   3. Connect a vinyl tube to the rear disc brake bleeder plug.
   4. Add brake fluid to the reservoir until the fluid level is between the MAX and MIN lines on the brake fluid reservoir. (*a)
   5. Depress the brake pedal several times with approximately 1 second between each depression, and then loosen the bleeder plug with the pedal depressed. (*b)
   6. When brake fluid stops coming out, tighten the bleeder plug and then release the brake pedal for 1 second or more. (*c)

      HINT: 

      When the brake pedal is released, the piston inside the master cylinder may take longer than the brake pedal to return to its original position. Therefore, make sure to wait for 1 second or more between each depression of the brake pedal.

   7. Repeat steps (*a) through (*c) until there are no signs of air in the brake fluid.
6. 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.

7. Tighten the rear disc brake bleeder plug completely.

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

8. Install the rear disc brake bleeder plug cap to the rear disc brake bleeder plug.
9. 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 2 new bolts.

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

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

    Refer to ON-VEHICLE INSPECTION [12/2019 - ]

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

    Refer to DTC CHECK / CLEAR [12/2019 - ]

Refer to PROCEDURE - Step 1 [12/2019 - 10/2022] , or refer to PROCEDURE - Step 1 [10/2022 - ]

for HV Model: Refer to TEST MODE PROCEDURE [12/2019 - ]

for Gasoline Model: Refer to TEST MODE PROCEDURE [12/2019 - ]