Air Conditioning (Service Information): Overview Lexus RX III

Scheme 20

Scheme 21

Scheme 22

Scheme 23

Scheme 24

Scheme 25

Scheme 26

Scheme 27

Scheme 28

Scheme 29

Scheme 30

1. INSPECT REFRIGERANT VOLUME Check the sight glass on the air conditioning tube and accessory. Prepare the vehicle according to the chart below. Item Condition Vehicle door Fully open Temperature setting MAX COOL Blower speed HI A/C on Compare the sight glass to the following chart. Item Symptom Amount of Refrigerant Corrective Action 1 Bubbles exist Insufficient* Check for gas leaks and repair if necessary Recharge with a proper amount of refrigerant 2 No bubbles exist Empty, insufficient, or excessive Refer to 3 and 4 below 3 No temperature difference between compressor inlet and outlet Empty or nearly empty Check for gas leaks and repair if necessary Evacuate the AC system and recharge with a proper amount of refrigerant 4 Considerable temperature difference between compressor inlet and outlet Proper or excessive Refer to 5 and 6 below 5 Immediately after air conditioning is turned off, refrigerant remains clear Excessive Recover refrigerant Evacuate the AC system and recharge with a proper amount of refrigerant 6 Immediately after air conditioning is turned off, refrigerant foams and then becomes clear Proper - *: Bubbles in the sight glass with the vehicle's interior temperature above 35°C (95°F) can be considered normal if cooling is sufficient.
2. INSPECT REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET HINT: This is a method where a manifold gauge set is used to help locate the problem. Read the manifold gauge pressure when the following conditions are met: Test conditions: Temperature at the air inlet with the switch set at RECIRC is 30 to 35°C (86 to 95°F). The engine is running at 1500 RPM. The blower speed control switch position is at "HI". The temperature control dial position is at "COOL". The A/C switch is on. Doors are fully open. The engine switch is in a position that enables the A/C compressor to run. Normally functioning refrigeration system GAUGE READING Pressure Side Refrigerant Volume Low 0.15 to 0.25 MPa (1.5 to 2.5 kgf/cm 2 , 21 to 36 psi) High 1.37 to 1.57 MPa (14 to 16 kgf/cm 2 , 199 to 228 psi) Moisture is present in the refrigeration system. Symptom Probable Cause Diagnosis Corrective Action During operation, pressure on low pressure side cycles between normal and vacuum Moisture in the AC system will freeze at the expansion valve orifice, causing the refrigeration cycle to temporarily stop After the system stops, and warms up again, the ice will melt and normal operation will be temporarily restored Cooler dryer (integrated into condenser tank) in oversaturated state Moisture in refrigeration system freezes at expansion valve orifice and blocks circulation of refrigerant Replace cooler dryer Remove moisture in system by repeatedly evacuating air Supply a proper amount of new refrigerant Insufficient cooling Symptom Probable Cause Diagnosis Corrective Action Pressure is low on both low and high pressure sides Bubbles are seen through sight glass continuously Insufficient cooling performance Gas leaks from the refrigeration system Insufficient refrigerant Refrigerant leaking Check for gas leaks and repair if necessary Supply a proper amount of new refrigerant If the gauge indicates a pressure of close to 0, then it will be necessary to evacuate the system after repairing the leak Poor circulation of refrigerant Symptom Probable Cause Diagnosis Corrective Action Pressure is low on both low and high pressure sides Frost exists on pipe from condenser to unit Refrigerant flow is obstructed by dirt inside the pipes of the condenser core Receiver is clogged Replace condenser Refrigerant does not circulate. Symptom Probable Cause Diagnosis Corrective Action Vacuum is indicated on low pressure side and very low pressure is indicated on high pressure side Frost or condensation is seen on piping on both sides of receiver/drier or expansion valve Refrigerant flow is obstructed by moisture or dirt in refrigeration system Refrigerant flow is disrupted by gas leaks internally through the expansion valve Refrigerant does not circulate Check expansion valve Replace expansion valve Replace condenser Evacuate air and supply a proper amount of new refrigerant For internal gas leaks at expansion valve, replace expansion valve Refrigerant is overcharged or cooling effectiveness of condenser is insufficient. Symptom Probable Cause Diagnosis Corrective Action Pressure is too high on both low and high pressure sides No air bubbles are seen through sight glass even when engine RPM lowers Unable to develop sufficient performance due to excessive use of refrigeration system Cooling effectiveness of condenser is insufficient Excessive refrigerant in cycle --> excessive refrigerant was added during recharging Condenser cooling effectiveness is insufficient --> condenser fins are clogged at cooling fan Clean condenser Check the operation of the condenser cooling fan If 1 and 2 are normal state, check the amount of refrigerant and supply a proper amount of refrigerant Air is present in the refrigeration system. Symptom Probable Cause Diagnosis Corrective Action Pressure is too high on both low and high pressure sides The low pressure piping is too hot to touch Bubbles can be seen through sight glass Air in system Air present in refrigeration system Insufficient vacuum purging Check compressor oil to see if it is dirty or insufficient Evacuate the system and recharge it with new or purified refrigerant Expansion valve malfunction Symptom Probable Cause Diagnosis Corrective Action Pressure is too high on both low and high pressure sides Frost or a large amount of condensation on piping on low pressure side Expansion valve may be stuck Excessive refrigerant in low pressure piping Expansion valve opened too wide Check expansion valve Insufficient compressor compression Symptom Probable Cause Diagnosis Corrective Action Pressure is too high on both low and high pressure sides Pressure is too low on high pressure side Internal leak in compressor Low compression Leak from a damaged valve, or parts may be broken Replace compressor Gauge readings (Reference)

Scheme 31

Scheme 32

Scheme 33

1. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM Start up the engine. Turn the A/C switch on. Operate the cooler compressor at an engine speed of approximately 1000 RPM for 5 to 6 minutes to circulate the refrigerant. This causes most of the compressor oil from the various components of the A/C system to collect in the A/C compressor. Stop the engine. Recover the refrigerant from the A/C system using a refrigerant recovery unit.
2. CHARGE WITH REFRIGERANT Perform vacuum purging using a vacuum pump. Charge with refrigerant HFC-134a (R134a). Standard 450 to 550 g (15.9 to 19.4 oz.) SST: 09985-20010 09985-02010 09985-02050 09985-02060 09985-02070 09985-02080 09985-02090 09985-02110 09985-02130 09985-02140 09985-02150 NOTE: Do not turn the A/C switch on before charging with refrigerant. Doing so will cause the compressor to work without refrigerant, resulting in overheating of the compressor. Approximately 100 g (3.5 oz.) of refrigerant may need to be charged after bubbles disappear. The refrigerant amount should be checked by quantity, not with the sight glass. HINT: Ensure that sufficient refrigerant is available to recharge the system when using a refrigerant recovery unit. Refrigerant recovery units are not always able to recover 100% of the refrigerant from an A/C system.
3. WARM UP ENGINE Keep the A/C switch on for at least 2 minutes to warm up the compressor. NOTE: Be sure to warm up the compressor when turning the A/C switch on after removing and installing the cooler refrigerant lines (including the compressor), to prevent damage to the compressor.
4. INSPECT FOR REFRIGERANT LEAK After recharging with refrigerant, inspect for refrigerant leaks using a halogen leak detector. Carry out the test under the following conditions: Turn the engine switch off. Secure good ventilation (the halogen leak detector may react to volatile gases which are not refrigerant, such as evaporated gasoline and exhaust gas). Repeat the test 2 or 3 times. Make sure that there is some refrigerant remaining in the refrigeration system. When the compressor is off: approx. 392 to 588 kPa (4 to 6 kgf/cm 2 , 57 to 85 psi) Using a halogen leak detector, inspect for refrigerant leaks from the refrigerant lines. TEXT IN ILLUSTRATION *1 Inspect for Leak *2 Halogen Leak Detector Bring the halogen leak detector close to the drain hose with the detector's power off, and then turn the detector on. TEXT IN ILLUSTRATION *1 Halogen Leak Detector *2 Drain Hose HINT: After the blower motor has stopped, let the cooling unit stand for more than 15 minutes. Bring the halogen leak detector sensor under the drain hose. When bringing the halogen leak detector close to the drain hose, make sure that the halogen leak detector does not react to volatile gases. If it is not possible to avoid interference from volatile gases, the vehicle should be lifted up to allow testing. If a refrigerant leak is not detected from the drain hose, remove the blower motor control from the cooling unit. Insert the halogen leak detector sensor into the unit and perform the test. Disconnect the pressure switch connector and leave it for approximately 20 minutes. Bring the halogen leak detector close to the pressure switch and perform the test.

Scheme 34

Scheme 35

Scheme 36

Scheme 37

Scheme 38

Scheme 39

Scheme 40

Scheme 41

Scheme 42

Scheme 43

Scheme 44

Scheme 45

Scheme 46

Scheme 47

Scheme 48

Scheme 49

Scheme 50

Scheme 51

Scheme 52

Scheme 53

Scheme 54

Scheme 55

Scheme 56

Scheme 57

Scheme 58

Scheme 59

Scheme 60

Scheme 61

Scheme 62

Scheme 63

Scheme 64

Scheme 65

Scheme 66

Scheme 67

Scheme 68

Scheme 69

Scheme 70

Scheme 71

Scheme 72

Scheme 73

Scheme 74

Scheme 75

Scheme 76

1. PRECAUTION w/ Air Suspension: NOTE: Be sure to read Precaution thoroughly before servicing. Refer to «PRECAUTION». w/ Navigation System for HDD: NOTE: After the engine switch is turned off, the display and navigation module display (HDD navigation system) records various types of memory and settings. As a result, after turning the engine switch off, make sure to wait at least 60 seconds before disconnecting the cable from the negative (-) battery terminal. Refer to «PRECAUTION».
2. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM See step 1
3. ALIGN FRONT WHEELS STRAIGHT AHEAD
4. REMOVE FRONT WHEEL RH
5. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL Disable the auto tilt away function by changing the customize parameter. Refer to «CUSTOMIZE PARAMETERS». NOTE: Record the current customize parameter setting (whether the auto tilt away function is enabled or disabled) in order to restore the current setting after finishing this operation. HINT: Performing the above operation disables the auto tilt away function when the engine switch is turned off. Turn the engine switch on (IG). Operate the tilt and telescopic switch to fully extend and lower the steering column assembly. Turn the engine switch off and disconnect the cable from the negative (-) battery terminal. WARNING: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION».
6. REMOVE FRONT SEAT ASSEMBLY for LH Side: Refer to the procedure for Remove Front Seat Assembly. Refer to «REMOVAL»(/lexus/rx/iii-2008-2012/remont/seats/#seat-service-information) . for RH Side: HINT: Use the same procedure for the RH side and LH side.
7. REMOVE ENGINE ROOM SIDE COVER. Refer to «REMOVAL - Step 1»
8. REMOVE ENGINE ROOM SIDE COVER LH. Refer to «REMOVAL - Step 2»
9. REMOVE COOL AIR INTAKE DUCT SEAL. Refer to «REMOVAL - Step 3»
10. REMOVE FRONT FENDER TOP REINFORCEMENT SUB-ASSEMBLY LH. Refer to «REMOVAL - Step 4»
11. REMOVE FRONT FENDER TOP REINFORCEMENT SUB-ASSEMBLY RH. Refer to «REMOVAL - Step 5»
12. REMOVE FRONT FENDER TO COWL SIDE SEAL LH. Refer to «REMOVAL - Step 6»
13. REMOVE FRONT FENDER TO COWL SIDE SEAL RH. Refer to «REMOVAL - Step 7»
14. REMOVE FRONT WIPER ARM HEAD CAP. Refer to «REMOVAL - Step 8»
15. REMOVE FRONT WIPER ARM AND BLADE ASSEMBLY LH. Refer to «REMOVAL - Step 9»
16. REMOVE FRONT WIPER ARM AND BLADE ASSEMBLY RH. Refer to «REMOVAL - Step 10»
17. REMOVE COWL TOP VENTILATOR LOUVER SUB-ASSEMBLY. Refer to «REMOVAL - Step 11»
18. REMOVE WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY. Refer to «REMOVAL - Step 12»
19. REMOVE FRONT SHOCK ABSORBER CAP LH (w/ Air Suspension). Refer to «REMOVAL - Step 3»
20. REMOVE FRONT SHOCK ABSORBER CAP RH (w/ Air Suspension) HINT: Use the same procedure for the RH side and LH side.
21. REMOVE OUTER COWL TOP PANEL SUB-ASSEMBLY. Refer to «REMOVAL - Step 11»
22. DISCONNECT SUCTION PIPE SUB-ASSEMBLY Disengage the 6 clamps and separate the engine wire harness. Remove the bolt and slide the hook connector. Disconnect the suction pipe assembly. Remove the O-ring from the suction pipe sub-assembly. NOTE: Seal the openings of the disconnected parts using vinyl tape to prevent entry of moisture and foreign matter.
23. DISCONNECT AIR CONDITIONING TUBE AND ACCESSORY ASSEMBLY Disconnect the air conditioning tube and accessory assembly. Remove the O-ring from the air conditioning tube and accessory assembly. NOTE: Seal the openings of the disconnected parts using vinyl tape to prevent entry of moisture and foreign matter.
24. DISCONNECT OUTLET HEATER WATER HOSE Using pliers, grip the claws of the clip and slide the clip to disconnect the outlet heater water hose. NOTE: Do not apply excessive force to the outlet heater water hose. Prepare a drain pan or cloth in case the coolant leaks.
25. DISCONNECT INLET HEATER WATER HOSE Using pliers, grip the claws of the clip and slide the clip to disconnect the inlet heater water hose. NOTE: Do not apply excessive force to the inlet heater water hose. Prepare a drain pan or cloth in case the coolant leaks.
26. REMOVE LOWER NO. 3 STEERING WHEEL COVER. Refer to «REMOVAL - Step 3»
27. REMOVE LOWER NO. 2 STEERING WHEEL COVER. Refer to «REMOVAL - Step 4»
28. REMOVE STEERING PAD. Refer to «REMOVAL - Step 5»
29. REMOVE STEERING WHEEL ASSEMBLY. Refer to «REMOVAL - Step 5»
30. REMOVE LOWER STEERING COLUMN COVER. Refer to «REMOVAL - Step 10»
31. REMOVE UPPER STEERING COLUMN COVER. Refer to «REMOVAL - Step 11»
32. REMOVE TURN SIGNAL SWITCH ASSEMBLY WITH SPIRAL CABLE SUB-ASSEMBLY. Refer to «REMOVAL - Step 12»
33. REMOVE SHIFT LEVER KNOB SUB-ASSEMBLY . Refer to «REMOVAL - Step 11»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
34. REMOVE UPPER CONSOLE PANEL SUB-ASSEMBLY . Refer to «REMOVAL - Step 12»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
35. REMOVE NO. 2 CONSOLE BOX DUCT . Refer to «REMOVAL - Step 3»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
36. REMOVE CONSOLE REAR END PANEL SUB-ASSEMBLY . Refer to «REMOVAL - Step 4»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
37. REMOVE MULTI-MEDIA INTERFACE ECU ASSEMBLY (w/ USB Audio System). Refer to «REMOVAL - Step 2»
38. REMOVE REAR CONSOLE BOX ASSEMBLY . Refer to «REMOVAL - Step 6»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
39. REMOVE FRONT DOOR SCUFF PLATE LH . Refer to «REMOVAL - Step 3»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
40. REMOVE COWL SIDE TRIM SUB-ASSEMBLY LH . Refer to «REMOVAL - Step 4»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
41. REMOVE NO. 1 INSTRUMENT PANEL UNDER COVER SUB-ASSEMBLY . Refer to «REMOVAL - Step 21»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
42. REMOVE INSTRUMENT PANEL GARNISH LH . Refer to «REMOVAL - Step 22»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
43. REMOVE NO. 1 SWITCH HOLE BASE . Refer to «REMOVAL - Step 23»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
44. REMOVE LOWER INSTRUMENT PANEL FINISH PANEL SUB-ASSEMBLY . Refer to «REMOVAL - Step 24»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
45. REMOVE DRIVER SIDE KNEE AIRBAG ASSEMBLY. Refer to «REMOVAL - Step 9»
46. REMOVE NO. 4 AIR DUCT SUB-ASSEMBLY. Refer to «REMOVAL - Step 10»
47. REMOVE BRAKE PEDAL RETURN SPRING. Refer to «REMOVAL - Step 11»
48. REMOVE STOP LIGHT SWITCH ASSEMBLY. Refer to «REMOVAL - Step 2»
49. SEPARATE BRAKE MASTER CYLINDER PUSH ROD CLEVIS. Refer to «REMOVAL - Step 13»
50. REMOVE BRAKE PEDAL SUPPORT ASSEMBLY. Refer to «REMOVAL - Step 14»
51. SEPARATE STEERING INTERMEDIATE SHAFT ASSEMBLY. Refer to «REMOVAL - Step 13»
52. REMOVE STEERING POST ASSEMBLY. Refer to «REMOVAL - Step 14»
53. REMOVE NO. 1 INSTRUMENT PANEL HOLE COVER . Refer to «REMOVAL - Step 27»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
54. REMOVE NO. 2 INSTRUMENT PANEL HOLE COVER . Refer to «REMOVAL - Step 28»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
55. REMOVE NO. 1 INSTRUMENT CLUSTER FINISH PANEL . Refer to «REMOVAL - Step 29»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
56. REMOVE COMBINATION METER ASSEMBLY. Refer to «REMOVAL - Step 9»
57. REMOVE CENTER INSTRUMENT CLUSTER FINISH PANEL . Refer to «REMOVAL - Step 31»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
58. REMOVE ACCESSORY METER ASSEMBLY (w/o Navigation System). Refer to «REMOVAL - Step 3»
59. REMOVE MULTI-DISPLAY ASSEMBLY (w/ Navigation System). Refer to «REMOVAL - Step 2»
60. REMOVE INSTRUMENT PANEL FINISH PANEL . Refer to «REMOVAL - Step 34»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
61. REMOVE LOWER INSTRUMENT PANEL FINISH PANEL . Refer to «REMOVAL - Step 35»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
62. REMOVE RADIO RECEIVER ASSEMBLY WITH REGISTER. Refer to «REMOVAL - Step 10»
63. REMOVE CONSOLE BOX . Refer to «REMOVAL - Step 37»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
64. REMOVE FRONT DOOR SCUFF PLATE RH . Refer to «REMOVAL - Step 11»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
65. REMOVE COWL SIDE TRIM SUB-ASSEMBLY RH . Refer to «REMOVAL - Step 12»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
66. REMOVE NO. 2 INSTRUMENT PANEL UNDER COVER SUB-ASSEMBLY . Refer to «REMOVAL - Step 40»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
67. REMOVE INSTRUMENT PANEL GARNISH RH . Refer to «REMOVAL - Step 41»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
68. REMOVE FRONT PASSENGER SIDE KNEE AIRBAG ASSEMBLY. Refer to «REMOVAL - Step 10»
69. REMOVE GLOVE COMPARTMENT DOOR ASSEMBLY . Refer to «REMOVAL - Step 43»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
70. REMOVE REMOTE ENGINE STARTER ECU. Refer to «REMOVAL - Step 12»
71. REMOVE GLASS BREAKAGE SENSOR ECU. Refer to «REMOVAL - Step 12»
72. REMOVE INSTRUMENT SIDE PANEL LH . Refer to «REMOVAL - Step 5»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
73. REMOVE FRONT PILLAR GARNISH LH . Refer to «REMOVAL - Step 6»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
74. REMOVE INSTRUMENT SIDE PANEL RH . Refer to «REMOVAL - Step 13»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
75. REMOVE FRONT PILLAR GARNISH RH . Refer to «REMOVAL - Step 14»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
76. REMOVE NO. 1 INSTRUMENT PANEL REGISTER ASSEMBLY . Refer to «REMOVAL - Step 50»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
77. REMOVE NO. 2 INSTRUMENT PANEL REGISTER ASSEMBLY . Refer to «REMOVAL - Step 51»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
78. REMOVE NO. 1 SPEAKER OPENING COVER ASSEMBLY . Refer to «REMOVAL - Step 52»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
79. REMOVE FRONT NO. 4 SPEAKER ASSEMBLY. Refer to «REMOVAL - Step 2»
80. REMOVE NO. 1 DEFROSTER NOZZLE GARNISH . Refer to «REMOVAL - Step 54»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
81. REMOVE SHIFT LEVER ASSEMBLY. Refer to «REMOVAL - Step 15»
82. REMOVE NO. 1 CONSOLE BOX DUCT . Refer to «REMOVAL - Step 56»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
83. DISCONNECT INSTRUMENT PANEL WIRE ASSEMBLY. Refer to «REMOVAL - Step 2»
84. REMOVE INSTRUMENT PANEL SAFETY PAD ASSEMBLY . Refer to «REMOVAL - Step 58»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
85. REMOVE NO. 3 INSTRUMENT PANEL STAY . Refer to «REMOVAL - Step 59»(/lexus/rx/iii-2008-2012/remont/exteriorinterior-trim/#interior-panels-trim-service-information)
86. REMOVE DRIVER SIDE JUNCTION BLOCK ASSEMBLY. Refer to «REMOVAL - Step 2»
87. REMOVE POWER STEERING ECU ASSEMBLY. Refer to «REMOVAL - Step 6»
88. REMOVE TURN SIGNAL FLASHER ASSEMBLY. Refer to «REMOVAL - Step 2»
89. REMOVE CLEARANCE WARNING BUZZER. Refer to «REMOVAL - Step 11»
90. REMOVE DISPLAY AND NAVIGATION MODULE DISPLAY WITH BRACKET (w/ Navigation System for HDD). Refer to «REMOVAL - Step 17»
91. REMOVE ECU INTEGRATION BOX. Refer to «REMOVAL - Step 13»
92. REMOVE REAR NO. 2 AIR DUCT Disengage the 2 clamps and fastener. Disengage the claw and turn back the floor carpet as shown in the illustration. TEXT IN ILLUSTRATION *1 Clamp *2 Fastener Remove the clip. Disengage the claw and remove the rear No. 2 air duct.
93. REMOVE REAR NO. 1 AIR DUCT Disengage the clamp. Disengage the 2 claws and remove the rear No. 1 air duct.
94. REMOVE FRONT FLOOR CAUTION PLATE COVER (for TMC Made) Disengage the claw. Disengage the guide and remove the frame number cover as shown in the illustration.
95. REMOVE REAR NO. 4 AIR DUCT Disengage the 2 clamps and fastener. Disengage the claw and turn back the floor carpet as shown in the illustration. TEXT IN ILLUSTRATION *1 Clamp *2 Fastener Remove the clip. Disengage the claw and remove the rear No. 4 air duct.
96. REMOVE REAR NO. 3 AIR DUCT Disengage the 2 claws and remove the rear No. 3 air duct.
97. REMOVE CENTER HEATER TO REGISTER SUB DUCT Remove the 3 clips and center heater to register sub duct.
98. REMOVE NO. 5 INSTRUMENT PANEL BRACKET (w/o Navigation System for HDD) Remove the 2 No. 5 instrument panel brackets.
99. REMOVE NO. 1 INSTRUMENT PANEL BRACE SUB-ASSEMBLY Disengage each clamp. Remove the screw. Remove the 2 bolts, 2 nuts and No. 1 instrument panel brace sub-assembly. TEXT IN ILLUSTRATION *1 Screw *2 Bolt *3 Nut
100. REMOVE NO. 2 INSTRUMENT PANEL BRACE SUB-ASSEMBLY Disengage each clamp. Remove the screw. Remove the 2 bolts, 2 nuts and No. 2 instrument panel brace sub-assembly. TEXT IN ILLUSTRATION *1 Screw *2 Bolt *3 Nut
101. REMOVE INSTRUMENT PANEL REINFORCEMENT ASSEMBLY WITH AIR CONDITIONING UNIT ASSEMBLY Disengage each clamp. Disconnect each connector. Remove the bolt and disconnect the earth wire. TEXT IN ILLUSTRATION *1 Bolt *2 Earth wire Disengage each clamp. Disconnect the connector. Disconnect the blower motor connector. Disconnect the 2 air conditioning ECU connectors. Remove the bolt and disconnect the earth wire. Remove the nut and disconnect the connector holder. TEXT IN ILLUSTRATION *1 Blower motor connector *2 Air conditioning ECU connector *3 Nut *4 Connector holder *5 Bolt *6 Earth wire Remove the 2 bolts and 2 caps from the engine compartment side. Remove the nut. Disconnect the cooler drain hose. TEXT IN ILLUSTRATION *1 Cap *2 Bolt *3 Nut *4 Cooler drain hose Remove the 5 instrument panel safety pad caps. Using a "TORX" socket wrench (T40), remove the 5 "TORX" bolts and the instrument panel reinforcement assembly with air conditioning unit assembly. TEXT IN ILLUSTRATION *1 Instrument panel safety pad cap *2 "TORX" bolt
102. REMOVE NO. 1 AIR DUCT SUB-ASSEMBLY Disengage the 4 claws and remove the No. 1 air duct sub-assembly.
103. REMOVE AIR CONDITIONING UNIT ASSEMBLY Remove the 3 bolts and air conditioning unit assembly from the instrument panel reinforcement assembly.

See also:
• REMOVAL
• REMOVAL - Step 11
• ON-VEHICLE INSPECTION - Step 1