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Home >> Lexus >> 2024 >> RX 500h >> Repair and Diagnosis >> Suspension >> Rear Suspension >> Suspension System (Rear) - Service Information (1 Of 2) >> Rear Upper Arm >> Removal [08/2023 - ] >> Caution / Notice / Hint

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 arm removal/installation are shown below.

NECESSARY PROCEDURES AFTER PARTS REMOVED/INSTALLED/REPLACED (EXCEPT GASOLINE MODEL)

Replaced Part or Performed Procedure Necessary Procedure Effect/Inoperative Function when Necessary Procedure not Performed Link
Auxiliary battery terminal is disconnected/reconnected Operate the multiplex network master switch assembly (retractable outer mirror switch) to extend and retract the outer rear view mirror assembly Parking Support Brake System*1 Refer to INITIALIZATION [10/2022 - ]
Rear wheel alignment adjustment Perform "Calibration"
  • DTCs are stored
  • ABS warning light illuminates
  • Slip indicator light illuminates
  • Electronically controlled brake system does not operate correctly
for PHEV Model: Refer to RESET MEMORY / CALIBRATION [08/2023 - ]
except PHEV Model: Refer to RESET MEMORY / CALIBRATION [10/2022 - ]
w/ Dynamic Rear Steering: 
  1. Rear Toe Adjustment
  • DTCs are stored
  • Steering neutral position deviate
Refer to Rear Toe Adjustment [10/2022 - ]
Suspension parts Rear television camera assembly optical axis (Back camera position setting) Panoramic View Monitor System Refer to CALIBRATION [10/2022 - ]
Parking assist ECU initialization Advanced Park Refer to CALIBRATION [10/2022 - ]
Perform headlight ECU sub-assembly LH initialization Lighting System (w/ Automatic Headlight Beam Level Control System) Refer to INITIALIZATION [10/2022 - ]
Tires
  • Initialization*2*3
  • Tire Position Identification*2*3
Tire Pressure Warning System Refer to Procedures Necessary When Replacing Parts (for Tire Pressure Warning System) table below
Refer to WORK PROCEDURE [08/2023 - ]
Rear television camera assembly optical axis (Back camera position setting)*4 Parking Assist Monitor System Refer to CALIBRATION [10/2022 - ]
Parking assist ECU initialization*4 Panoramic View Monitor System Refer to CALIBRATION [10/2022 - ]
Advanced Park Refer to CALIBRATION [10/2022 - ]
Rear height control sensor sub-assembly LH Perform headlight ECU sub-assembly LH initialization Lighting system (w/ Automatic Headlight Beam Level Control System) Refer to INITIALIZATION [10/2022 - ]
Gas leak from exhaust system is repaired Perform Inspection After Repair
  • Poor idle, etc.
  • Engine start function, etc.
for A25A-FXS: Refer to INITIALIZATION [10/2022 - ]
for T24A-FTS: Refer to INITIALIZATION [10/2022 - ]

*1: When "[Parking Support Brake System icon] System Stopped See Owner's Manual" is displayed on the multi-information display.

*2: Also necessary after performing a tire rotation.

*3: It is not necessary to perform this procedure if the tire pressure warning valve and transmitters are installed to the same location.

*4: The vehicle height changes because of tire replacement.

NECESSARY PROCEDURES AFTER PARTS REMOVED/INSTALLED/REPLACED (FOR GASOLINE MODEL)

Replacement Part Necessary Procedure Effect/Inoperative Function when Necessary Procedure not Performed Link
Rear wheel alignment adjustment
  • Perform reset memory
  • Perform "Calibration"
  • DTCs are stored
  • ABS warning light illuminates
  • Slip indicator light illuminates
  • Electronically controlled brake system does not operate correctly
Refer to RESET MEMORY / CALIBRATION [10/2022 - ]
Suspension parts Rear television camera assembly optical axis (Back camera position setting) Parking Assist Monitor System Refer to CALIBRATION [10/2022 - ]
Parking assist ECU initialization Panoramic View Monitor System Refer to CALIBRATION [10/2022 - ]
Advanced Park Refer to CALIBRATION [10/2022 - ]
Perform headlight ECU sub-assembly LH initialization Lighting System (w/ Automatic Headlight Beam Level Control System) Refer to INITIALIZATION [10/2022 - ]
Tires ECU Data Initialization (When performing tire replacement after RoB code X2104 is output) Dynamic Torque Control AWD System Refer to CALIBRATION [10/2022 - ]
  • Initialization*1*2
  • Tire Position Identification*1*2
Tire Pressure Warning System Refer to Procedures Necessary When Replacing Parts (for Tire Pressure Warning System) table below
Refer to WORK PROCEDURE [08/2023 - ]
Rear television camera assembly optical axis (Back camera position setting)*3 Parking Assist Monitor System Refer to CALIBRATION [10/2022 - ]
Parking assist ECU initialization*3 Panoramic View Monitor System Refer to CALIBRATION [10/2022 - ]
Advanced Park Refer to CALIBRATION [10/2022 - ]
Rear height control sensor sub-assembly LH Perform headlight ECU sub-assembly LH initialization Lighting system (w/ Automatic Headlight Beam Level Control System) Refer to INITIALIZATION [10/2022 - ]
Gas leak from exhaust system is repaired Perform Inspection After Repair
  • Poor idle, etc.
  • Engine start function, etc.
Refer to INITIALIZATION [10/2022 - ]

*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.



WARNING:
  • Orange wire harnesses and connectors indicate high-voltage circuits. To prevent electric shock, always follow the procedure described in the appropriate service information . (except Gasoline Model)
    GTY588409Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    for THS-HEV Model: Refer to PRECAUTION [10/2022 - ]

    for PHEV Model: Refer to PRECAUTION [08/2023 - ]

    for 1Motor-HEV Model: Refer to PRECAUTION [10/2022 - ]

  • To prevent electric shock, wear insulated gloves when working on wire harnesses and components of the high voltage system. (except Gasoline Model)
    GTY588386Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  • To prevent burns, do not touch the engine, exhaust pipe or other high temperature components while the engine is hot.
    GTY563662Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002


NOTE:
  • After the ignition switch is turned off, the audio and visual system records various types of memory and settings. As a result, after turning the ignition switch off, make sure to wait at least 3 minutes before disconnecting the cable from the negative (-) auxiliary battery terminal. (except Gasoline Model)
  • When the cable is disconnected from the negative (-) auxiliary battery terminal and the security lock setting has been enabled, multi-display operations will be disabled upon next startup unless the password is entered. Be sure to check the security lock setting before disconnecting the cable from the negative (-) auxiliary battery terminal. (except Gasoline Model)
  • To prevent the key from being locked in the vehicle, make sure to enter e-latch inspection mode and enable the manual release handle before disconnecting the cable from the negative (-) auxiliary battery terminal. (except Gasoline Model)

    Refer to INSPECTION MODE PROCEDURE [10/2022 - ]



HINT: 

except Gasoline Model 

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 VEHICLE IS DRIVEN

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. Refer to INITIALIZATION [10/2022 - ]
Adaptive High Beam System
Lighting System (w/ Automatic Headlight Beam Level Control System)
LEARNING COMPLETES WHEN VEHICLE IS OPERATED NORMALLY

Effect/Inoperative Function when Necessary Procedure not Performed Necessary Procedure Link
Power Back Door System Reset back door close position Refer to INITIALIZATION [10/2022 - ]
Air Conditioning System except PHEV Model: 
  1. After the ignition switch is turned to ON, the servo motor standard position is recognized.

for PHEV Model: 
  1. After the ignition switch is turned to ON, the servo motor and cooler expansion valve standard position is recognized.
-

HINT: 



COMPONENTS (REMOVAL) 

Fig 1: Rear Upper Arm Removal Components [08/2023 - ]
GTY1129557Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Procedure Part Name Code
1 REAR SUSPENSION MEMBER SUB-ASSEMBLY 51206A - - -
2 REAR UPPER CONTROL ARM ASSEMBLY 48790 See step  2 - -
3 REAR UPPER NO. 2 CONTROL ARM ASSEMBLY 48790F See step  3 - -