Toyota Prius: Rear Disc Brake Pad

• Removal
• Installation
• Rear Brake Pad Replacement Mode

Removal

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 disc brake pad 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: Also necessary after performing a tire rotation. *2: It is not necessary to perform this procedure if the tire pressure warning valve and transmitters are installed to the same location. *3: The vehicle height changes because of tire replacement.
Tires	Initialization*1*2 Tire Position Identification*1*2	Tire Pressure Warning System	Refer to Procedures Necessary When Replacing Parts (for Tire Pressure Warning System)
	Rear television camera assembly optical axis (Back camera position setting)*3	Parking Assist Monitor System
	Parking assist ECU initialization*3	Panoramic View Monitor System
		Advanced Park

HINT:

When the cable is disconnected / reconnected to the auxiliary battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.

Items for which learning is completed by driving the vehicle

Effect/Inoperative Function when Necessary Procedure not Performed	Necessary Procedure	Link
Front Camera System	Drive the vehicle straight ahead at 35 km/h (22 mph) or more for 5 seconds or more.

Items for which learning is completed by operating the vehicle normally

Effect/Inoperative Function when Necessary Procedure not Performed	Necessary Procedure	Link
*1: w/o Power Back Door System *2: w/ Power Back Door System
Power Door Lock Control System*1 Back door opener	Perform door unlock operation with door control switch or electrical key transmitter sub-assembly switch.
Power Back Door System*2	Reset back door close position
Air Conditioning System	for HEV Model: After the ignition switch is turned to ON, the servo motor standard position is recognized. for PHEV Model: After the ignition switch is turned to ON, the servo motor and expansion valve standard position is recognized.	-

CAUTION / NOTICE / HINT

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, the brake pedal may feel soft due to clearance between the rear disc brake pads and rear disc. Depress the brake pedal several times until the brake pedal feels firm.
• After replacing the rear disc brake pads, always perform a road test to check the braking performance and check for vibrations.
• While the auxiliary battery is connected, even if the ignition 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.
• When the brake pedal is first depressed after replacing the brake pads or pushing back the disc brake piston, DTCs may be stored. As there is no malfunction, clear the DTC.

HINT:

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

CAUTION / NOTICE / HINT

COMPONENTS (REMOVAL)

Procedure		Part Name Code
1	PRECAUTION	-		-	-
2	REAR WHEEL	-	-	-	-
3	PERFORM REAR BRAKE PAD REPLACEMENT MODE	-	-	-
4	DISABLE BRAKE CONTROL	-	-	-

Procedure		Part Name Code
5	NO. 2 PARKING BRAKE WIRE ASSEMBLY	890C0A		-	-
6	REAR DISC BRAKE CYLINDER ASSEMBLY	-		-	-
7	REAR DISC BRAKE PAD	04466	-	-	-
8	REAR DISC BRAKE ANTI-SQUEAL SHIM KIT	04946		-	-

*1	Rear No. 1 Disc Brake Anti-squeal Shim	*2	Rear No. 2 Disc Brake Anti-squeal Shim
*3	Rear Disc Brake Pad Wear Indicator Plate	-	-
●	Non-reusable part	-	-

PROCEDURE

1. PRECAUTION

NOTICE: After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal. Click here Make sure to read the precautions of the electric parking brake system before removing the rear brake assembly. Click here

2. REMOVE REAR WHEEL

Click here

3. PERFORM REAR BRAKE PAD REPLACEMENT MODE

Click here

4. DISABLE BRAKE CONTROL

Click here

5. DISCONNECT NO. 2 PARKING BRAKE WIRE ASSEMBLY

Click here

6. SEPARATE REAR DISC BRAKE CYLINDER ASSEMBLY

Be careful not to get pinched by the rear disc brake cylinder assembly or other parts when removing the rear disc brake pads. After lifting up the rear disc brake cylinder assembly, secure it in place before performing any work on it. The rear disc brake cylinder assembly could fall, pinching hands or fingers and causing injury.

7. REMOVE REAR DISC BRAKE PAD

8. REMOVE REAR DISC BRAKE ANTI-SQUEAL SHIM KIT

*1	Rear Disc Brake Pad	*2	Rear No. 1 Disc Brake Anti-squeal Shim
*3	Rear No. 2 Disc Brake Anti-squeal Shim	*4	Rear Disc Brake Pad Wear Indicator Plate

(1) Remove the rear No. 1 disc brake anti-squeal shim and rear No. 2 disc brake anti-squeal shim from each rear disc brake pad.

(2) Using a screwdriver, remove the rear disc brake pad wear indicator plate from each rear disc brake pad.

Installation

INSTALLATION

CAUTION / NOTICE / HINT

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, the brake pedal may feel soft due to clearance between the rear disc brake pads and rear disc. Depress the brake pedal several times until the brake pedal feels firm.
• After replacing the rear disc brake pads, always perform a road test to check the braking performance and check for vibrations.
• While the auxiliary battery is connected, even if the ignition 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.
• When the brake pedal is first depressed after replacing the brake pads or pushing back the disc brake piston, DTCs may be stored. As there is no malfunction, clear the DTC.

HINT:

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

COMPONENTS (INSTALLATION)

Procedure		Part Name Code
1	REAR DISC BRAKE ANTI-SQUEAL SHIM KIT	04946		-	-
2	REAR DISC BRAKE PAD	04466		-	-
3	REAR DISC BRAKE CYLINDER ASSEMBLY	-		-	-
4	NO. 2 PARKING BRAKE WIRE ASSEMBLY	890C0A		-	-

*1	REAR NO. 1 DISC BRAKE ANTI-SQUEAL SHIM	*2	REAR NO. 2 DISC BRAKE ANTI-SQUEAL SHIM
*3	REAR DISC BRAKE PAD WEAR INDICATOR PLATE	-	-
	Tightening torque for "Major areas involving basic vehicle performance such as moving/turning/stopping": N*m (kgf*cm, ft.*lbf)	●	Non-reusable part

Procedure		Part Name Code
5	CONNECT CABLE TO NEGATIVE AUXILIARY BATTERY TERMINAL	-		-	-
6	BRAKE FLUID LEVEL IN RESERVOIR	-	-	-
7	REAR WHEEL	-	-	-	-
8	NORMAL CONDITION RECOVERY	-	-	-
9	INITIALIZATION AFTER RECONNECTING AUXILIARY BATTERY TERMINAL	-	-	-

PROCEDURE

1. INSTALL REAR DISC BRAKE ANTI-SQUEAL SHIM KIT

NOTICE: When replacing worn rear disc brake pads, the rear disc brake anti-squeal shims and rear disc brake pad wear indicator plates must be replaced together with the rear disc brake pads. Install each rear disc brake pad wear indicator plate in the correct position and direction. Install the rear disc brake anti-squeal shims in the correct positions and directions.

*1	Rear No.1 Disc Brake Anti-squeal Shim	*2	Rear No. 2 Disc Brake Anti-squeal Shim
*3	Rear Disc Brake Pad Wear Indicator Plate	-	-
*a	Identification Mark (Orange)	*b	Identification Mark (Yellow green)
*c	Inner Side	*d	Outer Side
*e	Crow	-	-
	Brake Shim Grease (Part No. 08887-80409)	-	-

(1) Check the rear disc brake pad.

HINT:

Use the illustration to identify the inner side rear disc brake pad and outer side rear disc brake pad so that they can be installed to the correct side of the caliper.

(2) Apply brake shim grease (Part No. 08887-80409) to the inner side of the rear disc brake anti-squeal shim outer side as shown in the illustration.

(3) Install the rear No. 1 disc brake anti-squeal shim and rear No. 2 disc brake anti-squeal shim to each rear disc brake pad.

(4) Install a new rear disc brake pad wear indicator plate to each rear disc brake pad.

2. INSTALL REAR DISC BRAKE PAD

CAUTION: Be careful not to get pinched by the rear disc brake cylinder assembly or other parts when installing the rear disc brake pads.

(1) Using SST, push in the rear disc brake piston.

NOTICE:

• Make sure the brake fluid does not overflow from the reservoir.
• Do not forcibly push in the rear disc brake piston.

SST: 09719-77020

(2) Install the 2 rear disc brake pads to the rear disc brake cylinder mounting.

NOTICE:

• Keep the friction surfaces of the rear disc brake pads and rear disc free from oil and grease.
• 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.

(3) Depress the brake pedal several times.

3. INSTALL REAR DISC BRAKE CYLINDER ASSEMBLY

Torque:

34.3 N·m {350 kgf·cm, 25 ft·lbf}

4. CONNECT NO. 2 PARKING BRAKE WIRE ASSEMBLY

Click here

5. CONNECT CABLE TO NEGATIVE AUXILIARY BATTERY TERMINAL

Click here

6. INSPECT BRAKE FLUID LEVEL IN RESERVOIR

Click here

7. INSTALL REAR WHEEL

Click here

8. NORMAL CONDITION RECOVERY

Click here

9. INITIALIZATION AFTER RECONNECTING AUXILIARY BATTERY TERMINAL

HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

Rear Brake Pad Replacement Mode

REAR BRAKE PAD REPLACEMENT MODE

REAR BRAKE PAD REPLACEMENT MODE

*1	Rear Disc Brake Piston
*2	Nut
*a	The nut moves inward in pad replacement mode

HINT:

When replacing the rear disc brake pad and rear disc, since the nut inside the rear disc brake cylinder assembly is in an advanced position, it is necessary to move the nut back inside the cylinder. The nut can be moved back using pad replacement mode.

(a) Pad replacement mode

When Using the GTS:

1. Select "EPB Full Release" using the GTS.

   NOTICE:

   The parking brake must be released.

2. Follow the GTS display and select "Next".

   NOTICE:

   • Make sure to perform this procedure with the ignition switch to ON.
   • Make sure that the brake pedal is not depressed when performing this procedure.
   • When the system changes to pad replacement mode, DTC C060E2A, C06132A or C13B800 may be stored. If the DTC is stored, clear the DTCs after the procedure (rear brake pad replacement, etc.) is complete.

   HINT:

   Once the operation finishes, the parking brake indicator light flashes slowly (1 second intervals) (nut moves back inside the cylinder and system enters pad replacement mode).

Chassis > Brake/EPB > Utility

Tester Display
EPB Full Release

When not Using the GTS:

1. Turn the ignition switch off.
2. Turn the ignition switch to ON.
3. Within 8 seconds, operate the electric parking brake switch (integration control and panel assembly) to perform 3 lock side ON operations (from off (release) to on (pull)) and then 3 release side ON operations (from off (release) to on (push)).

   NOTICE:

   • If the operation is performed too quickly, the system may not respond. If the system does not respond, perform the operation again at a slower speed.
   • The parking brake must be released.

   HINT:

   The parking brake indicator light flashes (0.25 second intervals).

4. Push and hold the electric parking brake switch (integration control and panel assembly) to the release side for 5 seconds or more.

   NOTICE:

   • Make sure to perform this procedure with the ignition switch to ON.
   • Make sure that the brake pedal is not depressed when performing this procedure.
   • When the system changes to pad replacement mode, DTC C060E2A, C06132A or C13B800 may be stored. If the DTC is stored, clear the DTCs after the procedure (rear brake pad replacement, etc.) is complete.

   HINT:

   After a short time passes, the parking brake actuator assembly operates, and once the assembly finishes operating, the parking brake indicator light flashes slowly (1 second intervals) (nut moves back inside the cylinder and system enters pad replacement mode).

(b) Turn the ignition switch off.

NOTICE:

Do not operate the electric parking brake switch (integration control and panel assembly) until the procedure is complete. If operated, the system will return to its normal condition.

When Using the GTS:

1. Disconnect the GTS from the DLC3.

(c) Normal condition recovery

(1) After the procedure (rear brake pad replacement, etc.) is complete, turn the ignition switch to ON and pull the electric parking brake switch (integration control and panel assembly) to the lock side for 5 seconds or more.

NOTICE:

• When performing work (replacing the rear brake pad, etc.), do not operate the electric parking brake switch (integration control and panel assembly) or turn the ignition switch to ON and operate the shift lever. If the electric parking brake switch (integration control and panel assembly) or shift lever is operated, the parking brake may operate and the rear disc brake piston may fall off. Also, make sure to disconnect the connector of the parking brake actuator assembly or disconnect the cable from the negative (-) auxiliary battery terminal.
• When DTC C060E2A, C06132A or C13B800 is stored, clear the DTCs.