Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: Removal

Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual / Vehicle Interior / Heating / Air Conditioning / Air Conditioning Unit / 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 air conditioning unit removal/installation are shown below.

Necessary Procedure After Parts Removed/Installed/Replaced

Replaced Part or Performed Procedure

Necessary Procedure

Effect/Inoperative Function when Necessary Procedure not Performed

Link
*1: When performing learning using the Techstream.

Click here

Disconnect cable from negative battery terminal

Memorize steering angle neutral point

Lane Control System

Pre-collision System

Intelligent Clearance Sonar System*1

Parking Assist Monitor System

Panoramic View Monitor System

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

Initialize back door lock

Power Door Lock Control System

Reset back door close position

Power Back Door System (w/ Outside Door Control Switch)

Removal/installation of the spiral cable with sensor sub-assembly
  • Steering angle neutral point (Initialize parking assist monitor system)
  • Steering angle setting

Parking assist monitor system

for Initialization

for Calibration

Steering angle neutral point (Initialize panoramic view monitor system)

Panoramic view monitor system

for Initialization

for Calibration

Steering angle neutral point (Initialize intelligent clearance sonar system)

Intelligent clearance sonar system

  • No. 1 air conditioning radiator damper servo sub-assembly
  • No. 2 air conditioning radiator damper servo sub-assembly
  • No. 3 air conditioning radiator damper servo sub-assembly

Initialization servo motor (Air conditioning system)

DTCs are output

PROCEDURE

1. PRECAUTION

NOTICE:

  • Make sure to select face mode before disconnecting the cable from the negative (-) battery terminal.
  • Make sure to perform initialization after replacing the air conditioning radiator damper servo sub-assembly. If initialization is not performed, the air conditioner unit assembly will not perform properly as the air conditioning amplifier assembly will not be able to recognize the position of the air conditioning radiator damper sub-assembly.

2. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM

Click here

3. REMOVE WINDSHIELD WIPER MOTOR AND LINK

Click here

4. REMOVE OUTER COWL TOP PANEL SUB-ASSEMBLY

Click here

5. DISCONNECT NO. 2 AIR CONDITIONER TUBE AND ACCESSORY ASSEMBLY

(a) Remove the bolt and rotate the hook connector as shown in the illustration.

(b) Disconnect the No. 2 air conditioner tube and accessory assembly.

(c) Remove the 2 O-rings from the No. 2 air conditioner tube and accessory assembly.

NOTICE:

Seal the openings of the disconnected parts using vinyl tape to prevent entry of moisture and foreign matter.

6. DISCONNECT OUTLET HEATER WATER HOSE

(a) Using pliers, grip the claws of the clip and slide the clip to disconnect the outlet heater water hose.

NOTICE:

  • Do not apply excessive force to the outlet heater water hose.
  • Prepare a drain pan or cloth in case the coolant leaks.

7. DISCONNECT INLET HEATER WATER HOSE

(a) Using pliers, grip the claws of the clip and slide the clip to disconnect the inlet heater water hose.

NOTICE:

  • Do not apply excessive force to the inlet heater water hose.
  • Prepare a drain pan or cloth in case the coolant leaks.

8. REMOVE FRONT SEAT ASSEMBLY LH

Click here

9. REMOVE FRONT SEAT ASSEMBLY RH

HINT:

Use the same procedure as for the LH side.

10. REMOVE INSTRUMENT PANEL SAFETY PAD ASSEMBLY

Click here

11. REMOVE STEERING COLUMN ASSEMBLY

Click here

12. REMOVE ACCELERATOR PEDAL PAD

Click here

13. REMOVE ACCELERATOR PEDAL

Click here

14. REMOVE TRANSMISSION FLOOR SHIFT ASSEMBLY

for U881E Automatic Transmission / Transaxle:

Click here

for U881F Automatic Transmission / Transaxle:

Click here

15. REMOVE DCM (TELEMATICS TRANSCEIVER) WITH BRACKET (w/ Telematics Transceiver)

Click here

16. REMOVE NO. 3 CONSOLE BOX MOUNTING BRACKET

Click here

17. REMOVE SHIFT AND SELECT LEVER SUPPORT

Click here

18. REMOVE NO. 1 CONSOLE BOX DUCT

Click here

19. REMOVE REAR NO. 2 AIR DUCT

(a) Disengage the 4 guides and turn back the front floor carpet assembly as shown in the illustration.

(b) Remove the clip.

(c) Disengage the claw and remove the rear No. 2 air duct.

20. REMOVE REAR NO. 1 AIR DUCT

(a) Disengage each clamp.

(b) Disengage the 2 claws and remove the rear No. 1 air duct.

21. REMOVE REAR NO. 4 AIR DUCT

(a) Disengage the 4 guides and turn back the front floor carpet assembly as shown in the illustration.

(b) Remove the clip.

(c) Disengage the claw and remove the rear No. 4 air duct.

22. REMOVE REAR NO. 3 AIR DUCT

(a) Disengage the 2 claws and remove the rear No. 3 air duct.

23. REMOVE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY WITH MAIN BODY ECU

Click here

24. REMOVE PARKING ASSIST ECU (w/ Panoramic View Monitor System)

Click here

25. REMOVE NO. 1 INSTRUMENT PANEL BRACE SUB-ASSEMBLY

Nut

Screw

Bolt

(a) Disengage each clamp.

(b) Remove the 2 nuts, screw, 2 bolts and No. 1 instrument panel brace sub-assembly.

26. REMOVE NO. 2 INSTRUMENT PANEL BRACE SUB-ASSEMBLY

Nut

Screw

Bolt

(a) Disengage each clamp.

(b) Remove the 2 nuts, screw, 2 bolts and No. 2 instrument panel brace sub-assembly.

27. REMOVE INSTRUMENT PANEL REINFORCEMENT SUB-ASSEMBLY

(a) Remove the 2 bolts and instrument panel reinforcement sub-assembly.

28. REMOVE CENTER HEATER TO REGISTER SUB DUCT

(a) Remove the 3 clips and center heater to register sub duct.

29. REMOVE NO. 1 AIR DUCT SUB-ASSEMBLY

(a) Disengage the clamp.

(b) Disengage the 6 claws to remove the No. 1 air duct sub-assembly.

30. DISCONNECT INSTRUMENT PANEL WIRE

(a) Remove the bolt (A) and disconnect the earth wire.

*1

ECU Integration Box RH

-

-

*a

Earth Wire

*b

Connector Holder

*c

Nut (A)

*d

Nut (B)

*e

Nut (C)

*f

Nut (D)

*g

Bolt (A)

*h

Bolt (B)

Nut

Connector

Bolt

-

-

(b) Remove the nut (A).

(c) Remove the nut (B).

(d) Remove the 2 nuts (C) and disconnect the connector holder.

(e) Remove the bolt (B) and 2 nuts (D), and disconnect the ECU integration box RH.

(f) Disconnect each connector.

(g) Disengage each clamp and disconnect the instrument panel wire.

31. REMOVE BRAKE PEDAL RETURN SPRING

Click here

32. REMOVE INSTRUMENT PANEL REINFORCEMENT ASSEMBLY WITH AIR CONDITIONER UNIT ASSEMBLY

NOTICE:

  • Be sure to support the air conditioner unit assembly when removing it. Failure to do so may cause the bracket of the air conditioner unit assembly to break.
  • When disassembling the air conditioner unit assembly, eliminate static electricity by touching the vehicle body to prevent the components from being damaged.

(a) Remove the 2 hole plugs.

(b) Remove the 2 bolts.

(c) Disengage the claw and disconnect the drain cooler hose from the piping clamp.

(d) Remove the 4 bolts (A).

Bolt (A)

Bolt (B)

Nut

-

-

(e) Remove the 2 bolts (B) and disconnect the brake pedal support assembly.

(f) Remove the nut.

(g) Disconnect each connector.

Remove in this Direction

-

-

(h) Disengage the 2 guides and remove the instrument panel reinforcement assembly with air conditioner unit assembly as shown in the illustration.

33. REMOVE AIR CONDITIONER UNIT ASSEMBLY

(a) Remove the 3 bolts and air conditioner unit assembly from the instrument panel reinforcement assembly.

    Components
    COMPONENTS ILLUSTRATION *1 OUTER COWL TOP PANEL SUB-ASSEMBLY - - N*m (kgf*cm, ft.*lbf): Specified torque - - ILLUSTRATION *1 INLET HEATER WATER HOSE *2 NO. 2 AIR COND ...

    Disassembly
    DISASSEMBLY PROCEDURE 1. PRECAUTION NOTICE: Make sure to perform initialization after replacing the air conditioning radiator damper servo sub-assembly. If initialization is not performed, the air con ...

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