Seat: Removal & Installation Lexus IS II

REMOVAL

HINT

Use the same procedures for the LH side and RH side.

Scheme 120

Scheme 121

Scheme 122

Scheme 123

1. REMOVE FRONT SEAT HEADREST ASSEMBLY
2. REMOVE FRONT OUTER SEAT TRACK BRACKET COVER Operate the power seat switch knob and move the seat to the rearmost position. Using a screwdriver, detach the 2 claws and remove the seat track bracket cover outer front LH. HINT: Tape the screwdriver tip before use.
3. REMOVE FRONT INNER SEAT TRACK BRACKET COVER
4. REMOVE REAR OUTER SEAT TRACK COVER Operate the power seat switch knob and move the seat to the position farthest forward. Using a screwdriver, detach the 2 claws and remove the front seat track cover rear outer LH. HINT: Tape the screwdriver tip before use.
5. REMOVE REAR INNER SEAT TRACK COVER
6. REMOVE FRONT SEAT ASSEMBLY Operate the power seat switch knob and move the seat to the rearmost position. Remove the 2 bolts on the front seat track bracket. Operate the power seat switch knob and move the seat to the position farthest forward. Remove the 2 bolts on the rear seat track bracket. Disconnect the cable from the negative (-) battery terminal. CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent the airbag and seat belt pretensioner from deploying (See «PRECAUTION»(ref-235542-S10058841152006062400000) ). Disconnect the connectors under the seat. Then remove the seat.

INSTALLATION

HINT

Use the same procedures for the LH side and RH side.

Scheme 124

Scheme 125

1. INSTALL FRONT SEAT ASSEMBLY Place the seat in the cabin. Connect the connectors under the seat. Connect the cable to the negative (-) battery terminal. Operate the power seat switch knob and move the seat to the position farthest forward. Tighten the 2 bolts on the rear seat track bracket. Torque: 37 N*m (377 kgf*cm, 27 ft.*lbf) HINT: Tighten the 2 bolts in the order indicated in the illustration. Operate the power seat switch knob and move the seat to the rearmost position. Tighten the 2 bolts on the rear seat track bracket. Torque: 37 N*m (377 kgf*cm, 27 ft.*lbf)
2. INSTALL REAR INNER SEAT TRACK COVER LH
3. INSTALL REAR OUTER SEAT TRACK COVER LH
4. INSTALL FRONT OUTER SEAT TRACK BRACKET COVER LH
5. INSTALL FRONT OUTER SEAT TRACK BRACKET COVER LH
6. INSTALL FRONT SEAT HEADREST ASSEMBLY
7. PERFORM INITIALIZATION Perform initialization. (See «INITIALIZATION»(ref-235541-S32349848442006062400000) ) NOTE: Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.
8. CHECK SRS WARNING LIGHT Check the SRS warning light. (See «DIAGNOSIS SYSTEM»(ref-235542-S25406180262006062400000) )
9. INSPECT FRONT SEAT ASSEMBLY Check the power seat operation. Check the seat heater operation (with seat heater system). Turn the engine switch on (IG). Turn the seat heater switch ON. Wait 5 minutes or more and confirm that the seat surface becomes warm.

Scheme 126

Scheme 127

Scheme 128

Scheme 129

Scheme 130

Scheme 131

Scheme 132

Scheme 133

1. REMOVE REAR SEAT CUSHION ASSEMBLY Detach the 2 front hooks of the seat cushion from the vehicle body. NOTE: Follow the instructions below carefully as the cushion frame deforms easily. Choose a hook to detach first. Place your hands near the hook as shown in the illustration. Then lift the seat cushion to detach the hook. Repeat for the other hook. Detach the 2 rear hooks of the seat cushion from the seatback. Remove the seat cushion.
2. REMOVE REAR SEAT HEADREST ASSEMBLY
3. REMOVE REAR CENTER SEAT HEADREST ASSEMBLY
4. REMOVE REAR SEATBACK ASSEMBLY Using a screwdriver, detach the claws to open the cap of the 3 rear seat shoulder belt guides. Using a screwdriver, detach the claw to open the cap of the 3 rear seat shoulder belt guides. Remove the 4 bolts and rear seatback assembly.

Scheme 134

Scheme 135

Scheme 136

Scheme 137

Scheme 138

Scheme 139

Scheme 140

Scheme 141

Scheme 142

Scheme 143

Scheme 144

Scheme 145

Scheme 146

Scheme 147

Scheme 148

Scheme 149

Scheme 150

Scheme 151

Scheme 152

1. REMOVE REAR BENCH TYPE SEAT CUSHION COVER Remove the hog rings. Remove the hog rings and seat cushion cover from the seat cushion frame (with pad).
2. REMOVE REAR CENTER SEAT ARMREST ASSEMBLY Remove the 2 nuts and rear center seat armrest assembly.
3. REMOVE REAR CENTER SEAT ARMREST DOOR SUB-ASSEMBLY (w/ Center Armrest Box) Remove the 2 bolts and hinge. Remove the 2 screws and rear center seat armrest door sub-assembly. Disengage the claw and remove the rear center seat armrest door sub-assembly.
4. REMOVE CENTER ARMREST LOCK SUB-ASSEMBLY (w/ Center Armrest Box) Remove the 4 screws and rear seat armrest plate. Remove the 2 screws and center armrest lock sub-assembly.
5. REMOVE REAR CENTER SEAT ARMREST CUP HOLDER SUB-ASSEMBLY (w/o Center Armrest Box) Remove the 2 bolts and hinge. Separate the pad sub-assembly and box assembly. Remove the 2 screws and rear center seat armrest cup holder sub-assembly.
6. REMOVE REAR CENTER SEAT ARMREST CUP HOLDER SUB-ASSEMBLY (w/ Center Armrest Box) Disengage the 14 claws and remove the rear center seat armrest panel. Remove the 2 screws and rear center seat armrest cup holder sub-assembly.
7. REMOVE REAR CENTER SEAT ARMREST BOX (w/ Center Armrest Box) Disengage the 15 claws and remove the rear center seat armrest cover. Remove the rear center seat armrest box.
8. REMOVE REAR SEAT HEADREST SUPPORT Disengage the 4 claws and remove the 2 rear seat headrest supports.
9. REMOVE REAR SEAT HEADREST SUPPORT
10. REMOVE REAR SEAT HEADREST SUPPORT Disengage the 2 claws and remove the rear seat headrest support.
11. REMOVE REAR SEAT HEADREST SUPPORT
12. REMOVE REAR SEAT SHOULDER BELT GUIDE RH Remove the 3 screws and rear seat shoulder belt guide RH.
13. REMOVE REAR SEAT SHOULDER BELT GUIDE LH Remove the 6 screws and rear seat shoulder belt guide LH.
14. REMOVE REAR BENCH TYPE SEATBACK COVER Remove the hog rings. Remove the hog rings and seatback cover from the seatback frame (with pad).

1. INSTALL FRONT POWER SEAT SWITCH (w/o Seat Position Memory System)
2. INSTALL FRONT POWER SEAT SWITCH (w/ Seat Position Memory System)
3. INSTALL FRONT SEAT CUSHION SHIELD WITH NO. 1 CUSHION SHIELD INNER
4. INSTALL SLIDE AND VERTICAL POWER SEAT SWITCH KNOB
5. INSTALL RECLINING POWER SEAT SWITCH KNOB

Scheme 153

1. INSPECT FRONT SEAT FRAME WITH ADJUSTER LH Check operation of the seat frame (slide motor). Check if the seat frame moves smoothly when the battery is connected to the slide motor connector terminals. OK MEASUREMENT CONDITION CHART Measurement Condition Operational Direction Battery positive (+) -->1 Battery negative (-) -->2 Forward Battery positive (+) -->2 Battery negative (-) -->1 Backward If the result is not as specified, replace the seat frame with adjuster. Check operation of the seat frame (front vertical motor). Check if the seat frame moves smoothly when the battery is connected to the front vertical motor connector terminals. OK MEASUREMENT CONDITION CHART Measurement Condition Operational Direction Battery positive (+) -->1 Battery negative (-) -->2 Upward Battery positive (+) -->2 Battery negative (-) -->1 Downward If the result is not as specified, replace the seat frame with adjuster. Check operation of the seat frame (lifter motor). Check if the seat frame moves smoothly when the battery is connected to the lifter motor connector terminals. OK MEASUREMENT CONDITION CHART Measurement Condition Operational Direction Battery positive (+) -->2 Battery negative (-) -->1 Upward Battery positive (+) -->1 Battery negative (-) -->2 Downward If the result is not as specified, replace the seat frame with adjuster. Check operation of the seat frame (reclining motor). Check if the seat frame moves smoothly when the battery is connected to the reclining motor connector terminals. OK MEASUREMENT CONDITION CHART Measurement Condition Operational Direction Battery positive (+) -->2 Battery negative (-) -->1 Forward Battery positive (+) -->1 Battery negative (-) -->2 Backward If the result is not as specified, replace the seat frame with adjuster.
2. INSPECT FRONT SEAT FRAME WITH ADJUSTER RH Check operation of the seat frame (slide motor). Check if the seat frame moves smoothly when the battery is connected to the slide motor connector terminals. OK MEASUREMENT CONDITION CHART Measurement Condition Operational Direction Battery positive (+) -->2 Battery negative (-) -->1 Forward Battery positive (+) -->1 Battery negative (-) -->2 Backward If the result is not as specified, replace the seat frame with adjuster. Check operation of the seat frame (front vertical motor). Check if the seat frame moves smoothly when the battery is connected to the front vertical motor connector terminals. OK MEASUREMENT CONDITION CHART Measurement Condition Operational Direction Battery positive (+) -->2 Battery negative (-) -->1 Upward Battery positive (+) -->1 Battery negative (-) -->2 Downward If the result is not as specified, replace the seat frame with adjuster. Check operation of the seat frame (lifter motor). Check if the seat frame moves smoothly when the battery is connected to the lifter motor connector terminals. OK MEASUREMENT CONDITION CHART Measurement Condition Operational Direction Battery positive (+) -->1 Battery negative (-) -->2 Upward Battery positive (+) -->2 Battery negative (-) -->1 Downward If the result is not as specified, replace the seat frame with adjuster. Check operation of the seat frame (reclining motor). Check if the seat frame moves smoothly when the battery is connected to the reclining motor connector terminals. OK MEASUREMENT CONDITION CHART Measurement Condition Operational Direction Battery positive (+) -->2 Battery negative (-) -->1 Forward Battery positive (+) -->1 Battery negative (-) -->2 Backward If the result is not as specified, replace the seat frame with adjuster.

1. INSTALL LUMBAR FRONT POWER SEAT SWITCH
2. INSTALL FRONT SEAT CUSHION SHIELD WITH INNER NO. 1 CUSHION SHIELD
3. INSTALL SLIDE AND VERTICAL POWER SEAT SWITCH KNOB
4. INSTALL RECLINING POWER SEAT SWITCH KNOB

Scheme 154

Scheme 155

1. REMOVE FRONT SEAT HEADREST ASSEMBLY
2. REMOVE FRONT OUTER SEAT TRACK BRACKET COVER (See «REMOVAL»(ref-235576-S12990610442006062400000) )
3. REMOVE FRONT INNER SEAT TRACK BRACKET COVER
4. REMOVE REAR OUTER SEAT TRACK COVER (See «REMOVAL»(ref-235576-S12990610442006062400000) )
5. REMOVE REAR INNER SEAT TRACK COVER
6. REMOVE FRONT SEAT ASSEMBLY (See «REMOVAL»(ref-235576-S12990610442006062400000) )
7. REMOVE FRONT INNER SEAT BELT ASSEMBLY (See «REMOVAL»(ref-235573-S11624302162006062400000) )
8. REMOVE RECLINING POWER SEAT SWITCH KNOB (See «DISASSEMBLY»(ref-235576-S41429513152006062400000) )
9. REMOVE SLIDE AND VERTICAL POWER SEAT SWITCH KNOB (See «DISASSEMBLY»(ref-235576-S41429513152006062400000) )
10. REMOVE FRONT SEAT CUSHION SHIELD WITH INNER NO. 1 CUSHION SHIELD (See «DISASSEMBLY»(ref-235576-S41429513152006062400000) )
11. REMOVE FRONT INNER SEAT CUSHION SHIELD (See «DISASSEMBLY»(ref-235576-S41429513152006062400000) )
12. REMOVE FRONT SEATBACK BOARD SUB-ASSEMBLY (See «DISASSEMBLY»(ref-235576-S41429513152006062400000) )
13. REMOVE FRONT SEAT HEADREST SUPPORT (See «DISASSEMBLY»(ref-235576-S41429513152006062400000) )
14. REMOVE FRONT SEAT HEADREST SUPPORT
15. REMOVE FRONT SEPARATE TYPE SEATBACK ASSEMBLY (w/ Seatback Board) (See «DISASSEMBLY»(ref-235576-S41429513152006062400000) )
16. REMOVE FRONT SEPARATE TYPE SEATBACK ASSEMBLY (w/ Seatback Board) (See «DISASSEMBLY»(ref-235576-S41429513152006062400000) )
17. REMOVE LUMBAR SUPPORT ADJUSTER ASSEMBLY Disconnect the connector and clamps. Remove the 2 screws and lumbar support adjuster.

Scheme 156

1. INSPECT LUMBAR SUPPORT ADJUSTER ASSEMBLY LH AND RH Check operation of the lumbar support adjuster. Check if the lumber support adjuster moves smoothly when the battery is connected to the lumbar support adjuster motor connector terminals. OK MEASUREMENT CONDITION CHART Measurement Condition Operation Direction Battery positive (+) -->1 Battery negative (-) -->2 Clockwise Battery positive (+) -->2 Battery negative (-) -->1 Counterclockwise If the result is not as specified, replace the lumbar support adjuster.

1. REMOVE FRONT SEAT HEADREST ASSEMBLY (for Power Seat)
2. REMOVE FRONT OUTER SEAT TRACK BRACKET COVER (for Power Seat) (See «REMOVAL»(ref-235576-S12990610442006062400000) )
3. REMOVE FRONT INNER SEAT TRACK BRACKET COVER (for Power Seat)
4. REMOVE REAR OUTER SEAT TRACK COVER (for Power Seat) (See «REMOVAL»(ref-235576-S12990610442006062400000) )
5. REMOVE REAR INNER SEAT TRACK COVER (for Power Seat)
6. REMOVE FRONT SEAT ASSEMBLY (for Power Seat) (See «REMOVAL»(ref-235576-S12990610442006062400000) )
7. REMOVE FRONT INNER SEAT BELT ASSEMBLY (See «REMOVAL»(ref-235573-S11624302162006062400000) )
8. REMOVE RECLINING POWER SEAT SWITCH KNOB (for Power Seat) (See «DISASSEMBLY»(ref-235576-S41429513152006062400000) )
9. REMOVE SLIDE AND VERTICAL POWER SEAT SWITCH KNOB (for Power Seat) (See «DISASSEMBLY»(ref-235576-S41429513152006062400000) )
10. REMOVE FRONT SEAT CUSHION SHIELD WITH INNER NO.1 CUSHION SHIELD (for Power Seat) (See «DISASSEMBLY»(ref-235576-S41429513152006062400000) )
11. REMOVE FRONT SEPARATE TYPE SEAT CUSHION ASSEMBLY LH (for Power Seat) (See «DISASSEMBLY»(ref-235576-S41429513152006062400000) )
12. REMOVE FRONT SEPARATE TYPE SEAT CUSHION COVER (for Power Seat) (See «DISASSEMBLY»(ref-235576-S41429513152006062400000) )
13. REMOVE FRONT SEAT HEADREST ASSEMBLY (for Manual Seat)
14. REMOVE FRONT INNER SEAT TRACK BRACKET COVER LH (for Manual Seat) (See «REMOVAL»(ref-235576-S21818771622006062400000) )
15. REMOVE FRONT OUTER SEAT TRACK BRACKET COVER LH (for Manual Seat) (See «REMOVAL»(ref-235576-S21818771622006062400000) )
16. REMOVE REAR OUTER SEAT TRACK COVER (for Manual Seat) (See «REMOVAL»(ref-235576-S21818771622006062400000) )
17. REMOVE REAR INNER SEAT TRACK COVER (for Manual Seat) (See «REMOVAL»(ref-235576-S21818771622006062400000) )
18. REMOVE VERTICAL SEAT ADJUSTER KNOB (for Manual Seat) (See «REMOVAL»(ref-235576-S21818771622006062400000) )
19. REMOVE VERTICAL SEAT ADJUSTER KNOB CAP (for Manual Seat) (See «REMOVAL»(ref-235576-S21818771622006062400000) )
20. REMOVE VERTICAL ADJUSTING HANDLE (for Manual Seat) (See «REMOVAL»(ref-235576-S21818771622006062400000) )
21. REMOVE RECLINING ADJUSTER RELEASE HANDLE LH (for Manual Seat) (See «REMOVAL»(ref-235576-S21818771622006062400000) )
22. REMOVE FRONT SEAT CUSHION SHIELD LH (for Manual Seat) (See «REMOVAL»(ref-235576-S21818771622006062400000) )
23. REMOVE FRONT INNER SEAT BELT ASSEMBLY (for Manual Seat) (See «REMOVAL»(ref-235573-S11624302162006062400000) )
24. REMOVE FRONT INNER SEAT CUSHION SHIELD LH (for Manual Seat) (See «REMOVAL»(ref-235576-S21818771622006062400000) )
25. REMOVE FRONT SEAT CUSHION COVER WITH PAD (for Manual Seat) (See «REMOVAL»(ref-235576-S21818771622006062400000) )
26. REMOVE FRONT SEPARATE TYPE SEAT CUSHION COVER (for Manual Seat) (See «REMOVAL»(ref-235576-S21818771622006062400000) )
27. REMOVE FRONT SEAT CUSHION HEATER ASSEMBLY Cut off the tack pins that fasten the seat heater, and then remove the front seat cushion heater assembly from the seat cushion cover.

Scheme 157

1. INSPECT FRONT SEAT CUSHION HEATER Measure the resistance according to the value(s) in the table below. Resistance TESTER CONDITION SPECIFIED CONDITION CHART Tester Connection Condition Specified Condition A-1 - B-1 Below 25°C (77°F) 3.05 to 3.65 ohms A-4 - B-2 A-1 - A-4 B-1 - B-2 A-2 - A-3 35°C (95°F) 8 to 12 kohms

1. INSTALL FRONT SEAT CUSHION HEATER ASSEMBLY Using a tacker, install the front seat cushion heater to the end of the seat cover with the tack pins.
2. INSTALL FRONT SEPARATE TYPE SEAT CUSHION COVER (for Manual Seat) (See «REASSEMBLY»(ref-235576-S25072967972006062400000) )
3. INSTALL FRONT SEAT CUSHION COVER WITH PAD (for Manual Seat) (See «REASSEMBLY»(ref-235576-S25072967972006062400000) )
4. INSTALL FRONT INNER SEAT CUSHION SHIELD LH (for Manual Seat)
5. INSTALL FRONT LOWER SEAT CUSHION SHIELD RH (for Manual Seat)
6. INSTALL FRONT SEAT CUSHION SHIELD LH (for Manual Seat)
7. INSTALL RECLINING ADJUSTER RELEASE HANDLE LH (for Manual Seat)
8. INSTALL VERTICAL ADJUSTING HANDLE (for Manual Seat)
9. INSTALL VERTICAL SEAT ADJUSTER KNOB CAP (for Manual Seat)
10. INSTALL VERTICAL SEAT ADJUSTER KNOB LH (for Manual Seat)
11. INSTALL FRONT SEAT ASSEMBLY LH (for Manual Seat) (See «INSTALLATION»(ref-235576-S03189139932006062400000) )
12. INSTALL REAR INNER SEAT TRACK COVER (for Manual Seat)
13. INSTALL REAR SEAT OUTER TRACK COVER (for Manual Seat)
14. INSTALL FRONT OUTER SEAT TRACK BRACKET COVER (for Manual Seat)
15. INSTALL FRONT INNER SEAT TRACK BRACKET COVER (for Manual Seat)
16. INSTALL FRONT SEAT HEADREST ASSEMBLY (for Manual Seat)
17. INSTALL FRONT SEPARATE TYPE SEAT CUSHION COVER (for Power Seat) (See «REASSEMBLY»(ref-235576-S24441387342006062400000) )
18. INSTALL FRONT SEPARATE TYPE SEAT CUSHION ASSEMBLY LH (for Power Seat)
19. INSTALL FRONT INNER NO.1 SEAT CUSHION SHIELD LH (for Power Seat)
20. INSTALL SLIDE AND VERTICAL POWER SEAT SWITCH KNOB (for Power Seat)
21. INSTALL RECLINING POWER SEAT SWITCH KNOB (for Power Seat)
22. INSTALL FRONT SEAT ASSEMBLY (for Power Seat) (See «INSTALLATION»(ref-235576-S39454599512006062400000) )
23. INSTALL REAR INNER SEAT TRACK COVER (for Power Seat)
24. INSTALL REAR OUTER SEAT TRACK COVER (for Power Seat)
25. INSTALL FRONT INNER SEAT TRACK BRACKET COVER (for Power Seat)
26. INSTALL FRONT OUTER SEAT TRACK BRACKET COVER (for Power Seat)
27. INSTALL FRONT SEAT HEADREST ASSEMBLY (for Power Seat)

Scheme 158

Scheme 159

1. REMOVE SEAT HEATER CONTROL SUB-ASSEMBLY Disconnect the 2 connectors. Disconnect the clamp, claw and remove the seat heater control sub-assembly.

Scheme 160

Scheme 161

1. INSPECT FRONT SEAT HEATER CONTROL LH Disconnect the seat heater control LH connector. Measure the voltage and resistance according to the value(s) in the table below. Resistance TESTER CONDITION SPECIFIED CONDITION CHART Tester Connection Condition Specified Condition 3 (E) - Body ground Always Below 1 ohms Voltage TESTER CONDITION SPECIFIED CONDITION CHART Tester Connection Condition Specified Condition 2 (SWL) - 3 (E) Engine switch on (IG), seat heater switch OFF -->ON 0 V -->10 to 14 V 5 (B) - 3 (E) Engine switch OFF -->on (IG) 0 V -->10 to 14 V Reconnect the seat heater control LH connector. Measure the voltage according to the value(s) in the table below. Voltage TESTER CONDITION SPECIFIED CONDITION CHART Tester Connection Condition Specified Condition 4 (THL) - 3 (E) Engine switch on (IG), seat heater switch volume 1 -->3 Gradual increase between 0 V -->10 to 14 V
2. INSPECT FRONT SEAT HEATER CONTROL RH Disconnect the seat heater control RH connector. Measure the voltage and resistance according to the value(s) in the table below. Resistance TESTER CONDITION SPECIFIED CONDITION CHART Tester Connection Condition Specified Condition 3 (E) - Body ground Always Below 1 ohms Voltage TESTER CONDITION SPECIFIED CONDITION CHART Tester Connection Condition Specified Condition 4 (SWR) - 3 (E) Engine switch on (IG), seat heater switch OFF -->ON 0 V -->10 to 14 V 5 (B) - 3 (E) Engine switch OFF -->on (IG) 0 V -->10 to 14 V Reconnect the seat heater control RH connector. Measure the voltage according to the value(s) in the table below. Voltage TESTER CONDITION SPECIFIED CONDITION CHART Tester Connection Condition Specified Condition 4 (THR) - 3 (E) Engine switch on (IG), seat heater switch volume 1 -->3 Gradual increase between 0 V -->10 to 14 V

Scheme 162

1. INSTALL SEAT HEATER CONTROL SUB-ASSEMBLY Install the seat heater control sub-assembly with the clamp and claw. Connect the 2 connectors.