Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001B3YZ
Model Year Start: 2019 Model: Avalon HV Prod Date Range: [04/2018 - 08/2021]
Title: BRAKE (REAR): REAR BRAKE: REMOVAL; 2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]

REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during rear brake removal/installation are shown below.

Necessary Procedures After Parts Removed/Installed/Replaced

Replaced Part or Performed Procedure

Necessary Procedure

Effect/Inoperative Function when Necessary Procedure not Performed

Link
*1: for HV Model

*2: When performing learning using the Techstream.

Click here 2019 - 2022 MY Avalon HV [04/2018 -        ]; PARK ASSIST / MONITORING: INTELLIGENT CLEARANCE SONAR SYSTEM (for HV Model): CALIBRATION

Auxiliary battery terminal is disconnected/reconnected*1

Perform steering sensor zero point calibration

Lane Departure Alert System (w/ Steering Control)

2019 - 2021 MY Avalon HV [04/2018 - 08/2021]; PRE-COLLISION: PRE-COLLISION SYSTEM (for HV Model): INITIALIZATION

Pre-collision System

Intelligent Clearance Sonar System*2

Lighting System (for HV Model with Cornering Light)

Memorize steering angle neutral point

Parking Assist Monitor System

2019 - 2022 MY Avalon HV [04/2018 -        ]; PARK ASSIST / MONITORING: PARKING ASSIST MONITOR SYSTEM(for HV Model): INITIALIZATION

Panoramic View Monitor System

2019 - 2022 MY Avalon HV [04/2018 -        ]; PARK ASSIST / MONITORING: PANORAMIC VIEW MONITOR SYSTEM (for HV Model): INITIALIZATION

NOTICE:

  • Immediately after installing the brake pads, the braking performance may be reduced. Always perform a road test in a safe place while paying attention to the surroundings.
  • After replacing the rear disc brake pads, always perform a road test to check the braking performance and check for vibrations.
  • When the brake pedal is first depressed after replacing the brake pads or pushing back the disc brake piston, DTC C1214 may be stored. As there is no malfunction, clear the DTC. (for HV Model)
  • While the auxiliary battery is connected, even if the power switch is off, the brake control system activates when the brake pedal is depressed or any door courtesy switch turns on. Therefore, when servicing the brake system components, do not operate the brake pedal or open/close the doors while the auxiliary battery is connected. (for HV Model)

HINT:

  • Use the same procedure for the RH side and LH side.
  • The following procedure is for the LH side.

PROCEDURE

1. PRECAUTION (for HV Model)

NOTICE:

  • After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

    Click here 2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; INTRODUCTION: REPAIR INSTRUCTION: PRECAUTION

  • Make sure to read the precautions of the electric parking brake system before removing the rear brake assembly.

    Click here 2019 - 2021 MY Avalon HV [04/2018 - 08/2021]; PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (for HV Model): PRECAUTION

2. REMOVE REAR WHEEL

Click here 2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; MAINTENANCE: TIRE AND WHEEL: REMOVAL+

3. PERFORM REAR BRAKE PAD REPLACEMENT MODE

for Gasoline Model: Click here 2019 - 2021 MY Avalon [04/2018 - 08/2021]; PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (for Gasoline Model): TEST MODE PROCEDURE

for HV Model: Click here 2019 - 2021 MY Avalon HV [04/2018 - 08/2021]; PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (for HV Model): TEST MODE PROCEDURE

4. DISABLE BRAKE CONTROL (for HV Model)

(a) Wait at least 2 minutes after turning the power switch off.

NOTICE:

  • When the brake pedal is depressed or the door courtesy switch is turned on even if the power switch is off, the brake control system activates. Therefore do not depress the brake pedal or open/close the doors until the reservoir level switch connector is disconnected.
  • Do not operate the electric parking brake switch assembly when the electric parking brake system is in rear brake pad replacement mode.

(b) Disconnect the reservoir level switch connector.

(c) Disconnect the cable from the negative (-) auxiliary battery terminal.

Click here 2019 MY Avalon HV [04/2018 - 08/2019]; MAINTENANCE: A25A-FXS AUXILIARY BATTERY: REMOVAL+ 2020 - 2021 MY Avalon HV [08/2019 - 08/2021]; MAINTENANCE: A25A-FXS AUXILIARY BATTERY: REMOVAL+

(d) Depress the brake pedal 40 times or more to return all the fluid in the accumulator back to the reservoir.

(e) Check that the brake pedal cannot be further depressed.

5. DRAIN BRAKE FLUID

NOTICE:

If brake fluid leaks onto any painted surface, immediately wash it off.

6. SEPARATE REAR FLEXIBLE HOSE

(a) Remove the union bolt and gasket, and disconnect the rear flexible hose from the rear disc brake cylinder assembly.

7. DISCONNECT NO. 2 PARKING BRAKE WIRE ASSEMBLY

Click here 2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; PARKING BRAKE: ELECTRIC PARKING BRAKE ACTUATOR: REMOVAL+

8. REMOVE PARKING BRAKE ACTUATOR ASSEMBLY

Click here 2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; PARKING BRAKE: ELECTRIC PARKING BRAKE ACTUATOR: REMOVAL+

9. REMOVE REAR DISC BRAKE CYLINDER ASSEMBLY

(a) Hold the 2 rear disc brake cylinder slide pins and remove the 2 bolts and rear disc brake cylinder assembly.

*a

Turn

*b

Hold

10. REMOVE REAR DISC BRAKE PAD

(a) Remove the 2 rear disc brake pads from the rear disc brake cylinder mounting.

11. REMOVE REAR DISC BRAKE ANTI-SQUEAL SHIM KIT

Click here 2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; MAINTENANCE: REAR DISC BRAKE PAD: REMOVAL+

12. REMOVE REAR DISC BRAKE PAD SUPPORT PLATE

(a) Remove the 4 rear disc brake pad support plates from the rear disc brake cylinder mounting.

NOTICE:

Each rear disc brake pad support plate has a different shape. Be sure to put an identification mark on each rear disc brake pad support plate so that it can be reinstalled to its original position.

13. REMOVE REAR DISC BRAKE CYLINDER SLIDE PIN

(a) Remove the rear No. 1 disc brake cylinder slide pin and rear No. 2 disc brake cylinder slide pin from the rear disc brake cylinder mounting.

*1

Rear No. 1 Disc Brake Cylinder Slide Pin

*2

Rear No. 2 Disc Brake Cylinder Slide Pin

(b) Using a screwdriver with its tip wrapped with protective tape, remove the rear disc brake cylinder slide bushing from the rear No. 2 disc brake cylinder slide pin.

NOTICE:

Do not damage the rear No. 2 disc brake cylinder slide pin.

*a

Protective Tape

14. REMOVE REAR DISC BRAKE BUSHING DUST BOOT

(a) Remove the 2 rear disc brake bushing dust boots from the rear disc brake cylinder mounting.

15. REMOVE REAR DISC BRAKE CYLINDER MOUNTING

(a) Remove the 2 bolts and rear disc brake cylinder mounting.

16. REMOVE REAR DISC

(a) Put matchmarks on the rear disc and rear axle hub and bearing assembly.

*a

Matchmark

(b) Remove the rear disc.