Toyota Prius: Rear Shock Absorber

• Removal
• Inspection
• Installation
• Disposal

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 shock absorber assembly 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 Toyota Prius vehicle height changes because of suspension or tire replacement.
Rear wheel alignment adjustment	Perform "Calibration"	DTCs are stored ABS warning light illuminates Brake system warning light (yellow indicator) illuminates Slip indicator light illuminates Electronically controlled brake system disabled or malfunctions
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
Suspension parts	Rear television camera assembly optical axis (Back camera position setting)	Parking Assist Monitor System
	Parking assist ECU initialization	Panoramic View Monitor System
		Advanced Park

CAUTION / NOTICE / HINT

CAUTION / NOTICE / HINT

COMPONENTS (REMOVAL)

Procedure		Part Name Code
1	BATTERY BOX COVER	58219K	-	-	-
2	REAR FLOOR SIDE MEMBER COVER LH	57628E	-	-	-
3	REAR FLOOR SIDE MEMBER COVER RH	57627G	-	-	-

*A

for PHEV Model

*B

for HEV Model

Procedure		Part Name Code
4	REAR WHEEL	-	-	-	-
5	LOOSEN REAR SHOCK ABSORBER ASSEMBLY	48540		-	-
6	REAR STABILIZER LINK ASSEMBLY	48840A	-	-	-
7	SEPARATE REAR SHOCK ABSORBER ASSEMBLY	48540		-	-
8	REAR UPPER CONTROL ARM ASSEMBLY	48790		-	-
9	REMOVE REAR SHOCK ABSORBER ASSEMBLY	48540		-	-

*A	w/ Stabilizer Bar	-	-
*1	PLATE WASHER	-	-

Procedure		Part Name Code
10	REAR SHOCK ABSORBER CAP	48554A		-	-
11	REAR SUSPENSION SUPPORT ASSEMBLY	48760B		-	-

*1	REAR SHOCK ABSORBER ASSEMBLY	-	-
●	Non-reusable part	★	Precoated part

PROCEDURE

1. REMOVE BATTERY BOX COVER (for PHEV Model)

Click here

2. REMOVE REAR FLOOR SIDE MEMBER COVER LH (for HEV Model)

Click here

3. REMOVE REAR FLOOR SIDE MEMBER COVER RH (for HEV Model)

Click here

4. REMOVE REAR WHEEL

Click here

5. LOOSEN REAR SHOCK ABSORBER ASSEMBLY

*1

Rear Axle Carrier Pin

-

-

(1) Loosen the nut of the rear shock absorber assembly.

NOTICE:

Hold the rear axle carrier pin while rotating the nut.

6. REMOVE REAR STABILIZER LINK ASSEMBLY (w/ Stabilizer Bar)

Click here

7. SEPARATE REAR SHOCK ABSORBER ASSEMBLY

*a	Wooden Block	*b	Jack
	Wooden Block Placement Location	-	-

(1) Using a jack and wooden block, support the rear No. 2 suspension arm assembly.

(2) Remove the 2 bolts and separate the rear shock absorber assembly from the vehicle.

8. SEPARATE REAR UPPER CONTROL ARM ASSEMBLY

(1) Remove the bolt and nut, and separate the rear upper control arm assembly from the rear axle carrier sub-assembly.

NOTICE:

Because the nut has its own stopper, do not turn the nut. Loosen the bolt with the nut secured.

9. REMOVE REAR SHOCK ABSORBER ASSEMBLY

*1

Rear Axle Carrier Pin

-

-

(1) Remove the nut, plate washer and rear shock absorber assembly from the rear axle carrier sub-assembly.

NOTICE:

Hold the rear axle carrier pin while rotating the nut.

10. REMOVE REAR SHOCK ABSORBER CAP

(1) Using a screwdriver with its tip wrapped with protective tape, remove the rear shock absorber cap from the rear shock absorber assembly.

11. REMOVE REAR SUSPENSION SUPPORT ASSEMBLY

*a

Turn

*b

Hold

(1) Secure the rear shock absorber assembly in a vise using aluminum plates.

NOTICE:

Do not overtighten the vise.

(2) Using SST and a 6 mm hexagon socket wrench, hold the rear shock absorber rod and remove the rear support to rear shock absorber nut.

SST: 09729-00170

(3) Remove the rear suspension support assembly from the rear shock absorber assembly.

Inspection

INSPECTION

PROCEDURE

1. INSPECT REAR SHOCK ABSORBER ASSEMBLY

(a) Compress and extend the rear shock absorber assembly rod 4 or more times.

Standard:

When compressed and extended at a constant speed, the stroke of the shock absorber rod is smooth with no abnormal resistance or sounds. When extended, the shock absorber rod returns to its original position at a constant speed with no abnormal sounds.

(b) If there are any abnormalities, replace the rear shock absorber assembly with a new one.

Installation

INSTALLATION

CAUTION / NOTICE / HINT

CAUTION / NOTICE / HINT

COMPONENTS (INSTALLATION)

Procedure		Part Name Code
1	REAR SUSPENSION SUPPORT ASSEMBLY	48760B		-	-
2	REAR SHOCK ABSORBER CAP	48554A	-	-	-

*1	REAR SHOCK ABSORBER ASSEMBLY	-	-
	Tightening torque for "Major areas involving basic Toyota Prius vehicle performance such as moving/turning/stopping": N*m (kgf*cm, ft.*lbf)	*	For use with SST
●	Non-reusable part		Adhesive 1324
★	Precoated part	-	-

Procedure		Part Name Code
3	TEMPORARILY INSTALL REAR SHOCK ABSORBER ASSEMBLY	48540		-	-
4	STABILIZE SUSPENSION	-		-	-
5	REAR UPPER CONTROL ARM ASSEMBLY	48790		-	-
6	CONNECT REAR SHOCK ABSORBER ASSEMBLY	48540		-	-
7	INSTALL REAR SHOCK ABSORBER ASSEMBLY	48540		-	-
8	REAR STABILIZER LINK ASSEMBLY (w/ Stabilizer Bar)	48840A	-	-	-
9	REAR WHEEL	-	-	-	-

*A	w/ Stabilizer Bar	-	-
*1	PLATE WASHER	-	-
	Tightening torque for "Major areas involving basic Toyota Prius vehicle performance such as moving/turning/stopping": N*m (kgf*cm, ft.*lbf)	-	-
*	For use with a ball joint lock nut wrench	-	-

Procedure		Part Name Code
10	REAR FLOOR SIDE MEMBER COVER LH	57628E	-	-	-
11	REAR FLOOR SIDE MEMBER COVER RH	57627G	-	-	-
12	BATTERY BOX COVER	58219K	-	-	-
13	INSPECT AND ADJUST REAR WHEEL ALIGNMENT	-	-	-
14	PERFORM INITIALIZATION	-	-	-

*A	for PHEV Model	*B	for HEV Model
	N*m (kgf*cm, ft.*lbf): Specified torque	-	-

PROCEDURE

1. INSTALL REAR SUSPENSION SUPPORT ASSEMBLY

*a	Torque Wrench Fulcrum Length	*b	Turn
*c	Hold	-	-

(1) Secure the rear suspension support assembly in a vise using aluminum plates.

NOTICE:

Do not overtighten the vise.

(2) Install the rear suspension support assembly to the rear shock absorber assembly.

(3) Apply a few drops of adhesive to the threads of a new rear support to rear shock absorber nut.

Adhesive:

Toyota Genuine Adhesive 1324, Three Bond 1324 or equivalent

(4) Using SST and a 6 mm hexagon socket wrench, hold the rear shock absorber rod and tighten the rear support to rear shock absorber nut.

SST: 09729-00170

Torque:

Specified tightening torque :

25 N·m {255 kgf·cm, 18 ft·lbf}

NOTICE:

Securely insert the 6 mm hexagon socket wrench into the rear shock absorber rod to prevent damage to the rear shock absorber assembly when tightening the rear support to rear shock absorber nut.

2. INSTALL REAR SHOCK ABSORBER CAP

3. TEMPORARILY INSTALL REAR SHOCK ABSORBER ASSEMBLY

*1

Rear Axle Carrier Pin

-

-

(1) Temporarily install the rear shock absorber assembly to the rear axle carrier sub-assembly with the nut and plate washer.

NOTICE:

Hold the rear axle carrier pin while rotating the nut.

4. STABILIZE SUSPENSION

CAUTION: Do not jack up the rear No. 2 suspension arm assembly too high as the Toyota Prius vehicle may fall.

*a	Wooden Block	*b	Jack
	Wooden Block Placement Location	-	-

(1) Using a jack and wooden block, apply load to the suspension so that the rear No. 2 suspension arm assembly is positioned as shown in the illustration.

Standard Length (A):

13 mm (0.512 in.)

5. INSTALL REAR UPPER CONTROL ARM ASSEMBLY

(1) Install the rear upper control arm assembly to the rear axle carrier sub-assembly with the bolt and nut.

Torque:

73 N·m {744 kgf·cm, 54 ft·lbf}

6. CONNECT REAR SHOCK ABSORBER ASSEMBLY

(1) Connect the rear shock absorber assembly to the vehicle with the 2 bolts.

Torque:

55 N·m {561 kgf·cm, 41 ft·lbf}

NOTICE:

Temporarily tighten the bolt (A) and then fully tighten the 2 bolts in the order of (B) and (A).

7. INSTALL REAR SHOCK ABSORBER ASSEMBLY

*1	Rear Axle Carrier Pin	-	-
*a	Torque Wrench Fulcrum Length	*b	Ball Joint Lock Nut Wrench
*c	Turn	*d	Hold

(1) Using a ball joint lock nut wrench, fully tighten the rear shock absorber assembly with the nut.

Torque:

Specified tightening torque :

125 N·m {1275 kgf·cm, 92 ft·lbf}

NOTICE:

Hold the rear axle carrier pin while rotating the nut.

8. INSTALL REAR STABILIZER LINK ASSEMBLY (w/ Stabilizer Bar)

Click here

9. INSTALL REAR WHEEL

Click here

10. INSTALL REAR FLOOR SIDE MEMBER COVER LH (for HEV Model)

Click here

11. INSTALL REAR FLOOR SIDE MEMBER COVER RH (for HEV Model)

Click here

12. INSTALL BATTERY BOX COVER (for PHEV Model)

Click here

13. INSPECT AND ADJUST REAR WHEEL ALIGNMENT

Click here

14. PERFORM INITIALIZATION

Parking Assist Monitor System
Panoramic View Monitor System
Advanced Park

Disposal

DISPOSAL

PROCEDURE

1. DISPOSE OF REAR SHOCK ABSORBER ASSEMBLY

HINT:

The gas is colorless, odorless and non-poisonous.

(a) Extend the piston rod and secure the rear shock absorber assembly at an angle in a vise.

(b) Using a hacksaw, slowly make a hole at the position indicated by the arrow in the illustration to discharge the gas inside.