Toyota Prius: Rear Upper Arm

• Removal
• Installation

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 upper control arm 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
Gas leak from exhaust system is repaired	Inspection after repair	Poor idle, etc. Engine start function, etc.	for M20A-FXS: for 2ZR-FXE:

CAUTION / NOTICE / HINT

for AWD

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.

Learning completes when Toyota Prius vehicle is driven

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

Learning completes when vehicle is operated 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

COMPONENTS (REMOVAL)

Procedure		Part Name Code
1	REAR SUSPENSION MEMBER SUB-ASSEMBLY	51206A	-	-	-
2	REAR UPPER CONTROL ARM ASSEMBLY LH	48790		-	-
3	REAR UPPER CONTROL ARM ASSEMBLY RH	48770A	-	-	-

PROCEDURE

1. REMOVE REAR SUSPENSION MEMBER SUB-ASSEMBLY

for 2WD: Click here

for AWD: Click here

2. REMOVE REAR UPPER CONTROL ARM ASSEMBLY LH

(1) Remove the bolt, nut and rear upper control arm assembly LH from the rear suspension member sub-assembly.

NOTICE:

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

3. REMOVE REAR UPPER CONTROL ARM ASSEMBLY RH

(a) Perform the same procedure as for the LH side.

Installation

INSTALLATION

CAUTION / NOTICE / HINT

COMPONENTS (INSTALLATION)

Procedure		Part Name Code
1	REAR UPPER CONTROL ARM ASSEMBLY LH	48790		-	-
2	REAR UPPER CONTROL ARM ASSEMBLY RH	48770A	-	-	-
3	REAR SUSPENSION MEMBER SUB-ASSEMBLY	51206A	-	-	-

Tightening torque for "Major areas involving basic Toyota Prius vehicle performance such as moving/turning/stopping": N*m (kgf*cm, ft.*lbf)

-

-

PROCEDURE

1. INSTALL REAR UPPER CONTROL ARM ASSEMBLY LH

(1) Temporarily install the rear upper control arm assembly LH to the rear suspension member sub-assembly with the bolt and nut.

(2) Position the rear upper control arm assembly LH as shown in the illustration.

Reference Length (A):

1.2 mm (0.047 in.)

(3) Fully tighten the bolt.

Torque:

73 N·m {744 kgf·cm, 54 ft·lbf}

NOTICE:

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

2. INSTALL REAR UPPER CONTROL ARM ASSEMBLY RH

3. INSTALL REAR SUSPENSION MEMBER SUB-ASSEMBLY

for 2WD: Click here

for AWD: Click here