Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Removal

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual / Engine & Hybrid System / 2gr-fks (cooling) / Thermostat / 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 thermostat 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

Battery terminal is disconnected/reconnected

Memorize steering angle neutral point

Lane Control System

Pre-collision system

Intelligent clearance sonar system*1

Lighting system (w/ Automatic Headlight Beam Level Control System)

Parking assist monitor system

Panoramic view monitor system

Initialize back door lock

Power door lock control system

Reset back door close position

Power back door system (w/ Outside Door Control Switch)

Replacement of ECM

Vehicle Identification Number (VIN) registration

MIL comes on

ECU communication ID registration (Immobiliser system)

Engine start function

Perform the following procedures in the order shown (If possible, read the transaxle compensation code from the previous ECM):

  1. Transfer transaxle compensation code
  2. Perform road test to allow ECM to learn
  • Large shift shock
  • Deterioration of fuel efficiency

for U881E Initialization

U881E Registration

U881F Initialization

U881F Registration

Perform the following procedures in the order shown (If impossible, read the transaxle compensation code from the previous ECM):

  1. Reset transaxle compensation code
  2. Perform road test to allow ECM to learn

Perform code registration (Immobiliser system)
  • Wireless door lock control system
  • Smart access system with push-button start
  • Engine start function
  • Steering lock system
  • Telematics system

  • Replacement of throttle body with motor assembly
  • Cleaning the deposits from the throttle body with motor assembly

Inspection after repair
  • Poor idle, etc.
  • Engine start function, etc.

Replacement of brake actuator assembly

Operate the electric parking brake switch assembly

Parking brake indicator light (red) blinks when the engine switch is first turned on (IG)

Calibration
  • VSC disabled or malfunctioning
  • DTCs are output
  • Slip indicator light illuminated
  • ABS warning light illuminated

*1: When performing learning using the Techstream.

Click here

NOTICE:

After the engine switch is turned off, the radio receiver assembly records various types of memory and settings. As a result, after turning the engine switch off, make sure to wait at least 120 seconds before disconnecting the cable from the negative (-) battery terminal.

PROCEDURE

1. REMOVE WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY

Click here

2. REMOVE OUTER COWL TOP PANEL SUB-ASSEMBLY

Click here

3. REMOVE NO. 2 ENGINE UNDER COVER

Click here

4. REMOVE ECM

Click here

5. REMOVE INTAKE AIR SURGE TANK ASSEMBLY

Click here

6. REMOVE INLET AIR CLEANER ASSEMBLY

Click here

7. REMOVE BATTERY

for 2WD: Click here

for AWD: Click here

8. REMOVE BATTERY CARRIER SUB-ASSEMBLY

for 2WD: Click here

for AWD: Click here

9. REMOVE BATTERY BRACKET REINFORCEMENT

for 2WD: Click here

for AWD: Click here

10. REMOVE FUEL PUMP PROTECTOR

Click here

11. REMOVE WIRE HARNESS CLAMP BRACKET

for 2WD: Click here

for AWD: Click here

12. REMOVE BRAKE ACTUATOR ASSEMBLY

Click here

13. DISCONNECT NO. 1 RADIATOR HOSE

Click here

14. INSTALL ENGINE SUPPORT BRIDGE

for 2WD: Click here

for AWD: Click here

15. REMOVE NO. 2 ENGINE MOUNTING STAY RH

Click here

16. REMOVE ENGINE MOUNTING INSULATOR SUB-ASSEMBLY RH

(a) Remove the bolt and separate the cooler bracket from the engine mounting insulator sub-assembly RH.

(b) Remove the 2 bolts and 2 nuts and separate the engine mounting insulator sub-assembly RH from the front No. 1 engine mounting bracket LH.

(c) Remove the 2 bolts, nut and engine mounting insulator sub-assembly RH.

17. REMOVE ENGINE MOUNTING SPACER

(a) Remove the 2 bolts and engine mounting spacer.

18. DISCONNECT ENGINE WIRE

(a) Disconnect the water inlet with thermostat sub-assembly connector.

(b) Remove the bolt to disconnect the engine wire.

19. REMOVE FRONT NO. 1 ENGINE MOUNTING BRACKET LH

Click here

20. DISCONNECT NO. 2 RADIATOR HOSE

(a) Slide the clip and disconnect the No. 2 radiator hose.

21. DISCONNECT WATER BY-PASS HOSE

(a) Slide the clip and disconnect the water by-pass hose.

22. REMOVE WATER INLET WITH THERMOSTAT SUB-ASSEMBLY

(a) Remove the 2 bolts, 2 nuts and water inlet with thermostat sub-assembly.

(b) Remove the gasket from the water inlet with thermostat sub-assembly.

    Installation
    INSTALLATION PROCEDURE 1. INSTALL WATER INLET WITH THERMOSTAT SUB-ASSEMBLY (a) Install a new gasket to the water inlet with thermostat sub-assembly. (b) Install the water inlet with thermostat sub-ass ...

    Water Pump
    ...

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