Lexus Car ES, IS, LS 1998-06

Removal & Installation

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  1. Disconnect the negative battery cable at battery.
  2.  
  3. Drain coolant from radiator.
  4.  
  5. Remove the front grill.
  6.  
  7. Remove two radiator mounting bolts.
  8.  
  9. Disconnect both transmission cooler lines from radiator.
  10.  
  11. Disconnect electrical connector for the fan control solenoid.
  12.  
  13. Disconnect the power steering cooler line from cooler and filter.
  14.  
  15. Disconnect the radiator upper and lower hoses.
  16.  
  17. Disconnect the overflow hose from radiator.
  18.  
  19. Remove the air inlet duct at the grill.
  20.  
  21. The lower part of radiator is equipped with two alignment dowel pins. They are located on the bottom of radiator tank and fit into rubber grommets. These rubber grommets are pressed into the radiator lower crossmember.
    WARNING
    The air conditioning system (if equipped) is under a constant pressure even with the engine off.


    NOTE
    The radiator and radiator cooling fan can be removed as an assembly. It is not necessary to remove the cooling fan before removing or installing the radiator.

  22.  
  23. Disconnect the two high pressure fluid lines at the hydraulic fan drive.
  24.  
  25. Disconnect the low pressure return hose at the hydraulic fan drive.
  26.  
  27. Gently lift up and remove radiator from vehicle. Be careful not to scrape the radiator fins against any other component. Also be careful not to disturb the air conditioning condenser (if equipped).
  28.  

To install:


CAUTION
Before installing the radiator or A/C condenser, be sure the radiator-to-body and radiator-to-A/C condenser rubber air seals are properly fastened to their original positions. These are used at the top, bottom and sides of the radiator and A/C condenser. To prevent overheating, these seals must be installed to their original positions.

  1. Equipped with air conditioning: Gently lower the radiator and fan shroud into the vehicle. Guide the two radiator alignment dowels through the holes in the rubber air seals first and then through the A/C support brackets. Continue to guide the alignment dowels into the rubber grommets located in lower radiator crossmember. The holes in the L-shaped brackets (located on bottom of A/C condenser) must be positioned between bottom of rubber air seals and top of rubber grommets.
  2.  
  3. Connect the radiator upper and lower hoses and hose clamps to radiator.
    CAUTION
    The tangs on the hose clamps must be positioned straight down.

  4.  
  5. Install coolant reserve/overflow tank hose at radiator.
  6.  
  7. Connect both transmission cooler lines at the radiator.
  8.  
  9. Install both radiator mounting bolts.
  10.  
  11. Install air inlet duct at grill.
  12.  
  13. Attach electric connector for hydraulic fan control solenoid.
  14.  
  15. Install the grill.
  16.  
  17. Connect the two high pressure lines to the hydraulic fan drive. Tighten 1 / 2 in. pressure line fitting to 36 ft. lbs.(49 Nm) and the 3 / 8 in. pressure line fitting to 21.5 ft. lbs. (29 Nm).
  18.  
  19. Connect the low pressure hose to the hydraulic fan drive. Position the spring clamp.
  20.  
  21. Connect the power steering filter hoses to the filter. Install new hose clamps.
  22.  
  23. Rotate the fan blades (by hand) and check for interference at fan shroud.
  24.  
  25. Refill cooling system.
  26.  
  27. Refill the power steering reservoir and bleed air from system.
  28.  
  29. Connect battery cable at battery.
  30.  
  31. Start and warm engine. Check for leaks.
  32.  

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Disconnect the negative battery cable. Wait at least 90 seconds before performing any work.
  4.  
  5. Drain engine coolant.
  6.  
  7. Disconnect the radiator inlet and outlet hoses.
  8.  
  9. Disconnect the oil cooler hoses.
  10.  
  11. Remove the 3 bolts, the air cleaner inlet and air cleaner inlet No.1.
  12.  
  13. Remove the radiator support upper as follows:


    1. Remove the radiator lower air deflector.
    2.  
    3. Disconnect the 2 horn connectors.
    4.  
    5. Using a screwdriver, remove the hood lock release lever cover.
      NOTE
      Removing the protector damages the clips inside the protector, and therefore the use of a new protector is necessary on installation.

    6.  
    7. Remove the bottom bolt of the hood lock.
    8.  
    9. Remove the 4 bolts and radiator support upper.
    10.  

  14.  
  15. Disconnect the fan motor connector, and remove the radiator w/fan.
  16.  
  17. Remove the radiator support cushion.
  18.  
  19. Remove the radiator support lower.
  20.  
  21. Remove the fan assembly.
  22.  

To install:

  1. Install the fan assy w/motor to the radiator and tighten the fasteners to 44 inch lbs. (5 Nm).
  2.  
  3. Install the radiator support lower.
  4.  
  5. Install the radiator support cushion.
  6.  
  7. Install the radiator w/fan assembly and connect the fan motor connector.
  8.  
  9. Install the radiator support upper as follows:


    1. Install the radiator support upper and tighten the 4 bolts to 10 ft. lbs. (14 Nm).
    2.  
    3. Install the bottom bolt of the hood lock.
    4.  
    5. Install the release lever cover.
    6.  
    7. Connect the 2 horn connectors.
    8.  
    9. Install the radiator lower air deflector.
    10.  

  10.  
  11. Install the air cleaner inlet and air cleaner inlet No.1.
  12.  
  13. Connect the oil cooler hoses.
  14.  
  15. Connect the radiator inlet and outlet hoses.

    Click image to see an enlarged view

    Fig. Checking hood clearance measurements.-ES 300

  16.  
  17. Adjus the hood sub-assembly as follows:


    1. Check that the clearance is within the standard value.

      Click image to see an enlarged view

      Fig. Adjust hood by turning cushions.-ES 300

    2.  
    3. Adjust the hood by turning the cushions.
    4.  
    5. Using a screwdriver, remove the hood lock release lever cover. Tape the screwdriver tip before use.

      Click image to see an enlarged view

      Fig. Loosen the bolts to adjust the locks.-ES 300

    6.  
    7. Adjust the lock by loosening the bolts.
    8.  

  18.  
  19. Refill the engine cooling system.
  20.  
  21. Connect the negative battery cable.
  22.  
  23. Start the engine and check system for coolant leaks.
  24.  



Click image to see an enlarged view

Fig. Components to remove to access the radiator assembly.-ES 330



Click image to see an enlarged view

Fig. Exploded view of the radiator assembly and related components.-ES 330

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Disconnect the negative battery cable. Wait at least 90 seconds before performing any work.
  4.  
  5. Drain engine coolant.
  6.  
  7. Remove engine under cover No. 1 and No. 2.
  8.  
  9. Remove the radiator lower air deflector.
  10.  
  11. Remove the battery and battery tray.
  12.  
  13. Remove the air cleaner inlet assembly.
  14.  
  15. Remove the air cleaner assembly.
  16.  
  17. Remove the air cleaner bracket.
  18.  
  19. Remove the air cleaner inlet N0. 1.
  20.  
  21. Disconnect the radiator inlet and outlet hoses.
  22.  
  23. Disconnect the oil cooler hoses.
  24.  
  25. Using a screwdriver with the tip wrapped in tape, remove the hood lock protector.
    NOTE
    Removing the protector damages the clips inside the protector, and therefore the use of a new protector is necessary on installation.

  26.  
  27. Disconnect the hood switch connector, remove the 3 bolts, then separate the hood lock.
  28.  
  29. Remove the radiator support upper as follows:


    1. Disconnect the horn connectors.
    2.  
    3. Remove the 5 bolts and radiator support upper.
    4.  

  30.  
  31. Disconnect the 2 wire harness connectors, and remove the radiator.
  32.  
  33. Remove the 2 radiator support cushions from the radiator.
  34.  
  35. Remove the 2 radiator support lowers from the radiator.
  36.  
  37. Disconnect the temperature detect switch connector, remove the 3 bolts, then remove the fan shroud with motor.
  38.  
  39. Remove the temperature detect switch.
  40.  

To install:

  1. Install the temperature detect switch.
  2.  
  3. Install the fan shroud with motor and tighten the bolts to 44 inch lbs. (5 Nm). Connect the temperature detect switch connector.
  4.  
  5. Install the 2 radiator support lowers to the radiator.
  6.  
  7. Install the 2 radiator support cushions to the radiator.
  8.  
  9. Install the radiator assembly and connect the 2 wire harness connectors.
  10.  
  11. Install the radiator support upper and tighten the 5 bolts to 10 ft. lbs. (14 Nm).
  12.  
  13. Connect the horn connectors.
  14.  
  15. Install the hood lock and tighten the bolts to 71 inch lbs. (8 Nm). Connect the hood switch connector.
  16.  
  17. Install the hood lock protector.
  18.  
  19. Connect the oil cooler hoses.
  20.  
  21. Connect the radiator inlet and outlet hoses.
  22.  
  23. Install the air cleaner inlet N0. 1.
  24.  
  25. Install the air cleaner bracket.
  26.  
  27. Install the air cleaner assembly.
  28.  
  29. Install the air cleaner inlet assembly.
  30.  
  31. Install the battery and battery tray.
  32.  
  33. Install the radiator lower air deflector.
  34.  
  35. Install engine under cover No. 1 and No. 2.
  36.  
  37. Inspect the vacuum hose connections.
  38.  
  39. Refill the engine cooling system.
  40.  
  41. Connect the negative battery cable.
  42.  
  43. Start the engine and check system for coolant leaks.
  44.  



Click image to see an enlarged view

Fig. Exploded view of the radiator assembly and related components.-IS 300

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Disconnect the negative battery cable. Wait at least 90 seconds before performing any work.
  4.  
  5. Remove engine under cover.
  6.  
  7. Drain engine coolant.
  8.  
  9. Remove the air cleaner inlet.
  10.  
  11. Remove the air cleaner and Mass Airflow (MAF) meter assembly.
  12.  
  13. Remove the radiator and electric cooling fan assembly as follows:


    1. Disconnect the upper radiator hose from the radiator.
    2.  
    3. Disconnect the lower radiator hose from the radiator.
    4.  
    5. Disconnect the ECM outlet duct from the ECM box.
    6.  
    7. Disconnect the wire for electric cooling fan from the clamp on the electric cooling fan.
    8.  
    9. Disconnect the 2 electric cooling fan connectors.
    10.  
    11. Disconnect the ECT switch connector for electric cooling fan.
    12.  
    13. A/T: Disconnect the 2 oil cooler hoses for A/T from the radiator.
    14.  
    15. Remove the 2 nuts and 2 upper radiator supports.
    16.  
    17. Lift out the radiator and cooling fan assembly.
    18.  
    19. Remove the 2 lower radiator supports.
    20.  

  14.  
  15. Remove the electric cooling fan from radiator as follows:


    1. Disconnect the radiator reservoir hose from the radiator.
    2.  
    3. Remove the 6 bolts and electric cooling fan.
    4.  

  16.  

To install:

  1. Install the electric cooling fan to the radiator as follows:


    1. Install the electric cooling fan with the 6 bolts and tighten to 44 inch lbs. (5 Nm).
    2.  
    3. Connect the radiator reservoir hose to the radiator.
    4.  

  2.  
  3. Install the radiator and electric cooling fan assembly as follows:


    1. Install the 2 lower radiator supports to the radiator.
    2.  
    3. Attach the 2 lower radiator supports on the radiator to the body bracket.
    4.  
    5. Install the radiator and electric cooling fan assembly with the 2 upper radiator supports and 2 nuts. Tighten the nuts to 10 ft. lbs. (13.5 Nm).
    6.  
    7. Connect the upper radiator hose to the radiator.
    8.  
    9. Connect the lower radiator hose to the radiator.
    10.  
    11. Connect the ECM outlet duct to the ECM box.
    12.  
    13. Connect the wire for electric cooling fan to the clamp on the electric cooling fan.
    14.  
    15. Connect the 2 electric cooling fan connectors.
    16.  
    17. Connect the ECT switch connector for electric cooling fan.
    18.  
    19. A/T: Connect the 2 oil cooler hoses for A/T to the radiator.
    20.  

  4.  
  5. Install the air cleaner and MAF meter assembly.
  6.  
  7. Install the air cleaner inlet.
  8.  
  9. Refill the engine cooling system.
  10.  
  11. Connect the negative battery cable.
  12.  
  13. Start the engine and check system for coolant leaks and A/T fluid leaks.
  14.  
  15. Install engine under cover.
  16.  



Click image to see an enlarged view

Fig. Front bumper assembly and related components.-IS 250 and IS 350



Click image to see an enlarged view

Fig. Exploded view of the radiator assembly and related components.-IS 250 and IS 350

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Disconnect the negative battery cable. Wait at least 90 seconds before performing any work.
  4.  
  5. Remove the cool air intake duct seal.
  6.  
  7. Remove the left and right engine room side covers.
  8.  
  9. Remove V-bank cover sub-assembly.
  10.  
  11. Remove the No. 1 inlet air cleaner.
  12.  
  13. Disconnect the No. 2 ventilation hose.
  14.  
  15. Remove the air cleaner cap with air cleaner hose.
  16.  
  17. Remove engine under cover.
  18.  
  19. Drain engine coolant.
  20.  
  21. Remove the front bumper assembly as follows:


    1. Using a screwdriver, turn the pin 90° and remove the 2 pin hold clips. Tape the screwdriver tip before use. Use the same procedures for the RH side and LH side.
    2.  
    3. Put protective tape around the front bumper assembly.
    4.  
    5. Using a clip remover, remove the 2 clips
    6.  
    7. Remove the 2 radiator grille protectors.
    8.  
    9. Remove the bolt and 10 screws.
    10.  
    11. Disengage the 5 claws and disconnect the front bumper assembly as shown in the illustration. Use the same procedures for the RH side and LH side.
    12.  
    13. Disconnect the headlight washer hose. (w/ headlight cleaner system)
    14.  
    15. Disconnect the connector and remove the front bumper assembly.
    16.  

  22.  
  23. Remove the front bumper energy absorber.
  24.  
  25. Disengage the 2 clips and remove the radiator support opening cover.
  26.  
  27. Disconnect the connector, remove the 3 bolts and the millimeter wave radar sensor assembly (w/ Dynamic Radar Cruise Control System).
  28.  
  29. Remove the 3 screws, clamp and the hood lock control cable cover.
  30.  
  31. Disconnect the hood lock assembly as follows:


    1. Disconnect the connector.
    2.  
    3. Remove the hood lock nut cap and the hood lock nut.
    4.  
    5. Remove the 2 bolts, and separate the hood lock assembly from the upper radiator support.
      NOTE
      Do not forcibly bend the hood lock control cable.

    6.  

  32.  
  33. Remove the upper radiator support as follows:


    1. Separate the 4 wire harness clamps and the 3 connectors.
    2.  
    3. Separate the clamp and the cooling fan motor connector.
    4.  
    5. Separate the clamp and the No.2 cooling fan motor connector.
    6.  
    7. Separate the 6 clamps and the No.2 engine room wire.
    8.  
    9. Remove the 5 bolts and the upper radiator support.
    10.  

  34.  
  35. Remove the 2 clips and the radiator inlet hose from the radiator assembly.
  36.  
  37. Remove the 2 clamps and the radiator outlet hose from the radiator assembly.
  38.  
  39. Remove the 4 bolts, separate the cooler condenser assembly from the radiator assembly.
  40.  
  41. Remove the engine room ECU outlet duct from the engine room ECU box.
  42.  
  43. Separate the reserve tank cap sub-assembly from the reserve tank.
  44.  
  45. Remove the radiator assembly from the vehicle together with the cooling fan assembly.
    NOTE
    Make sure that the cooler condenser assembly and radiator assembly do not come into contact with each other.

  46.  
  47. Remove the 3 claws and the cooling fan assembly from the radiator assembly.
  48.  
  49. Remove the 2 radiator support cushions and the 2 lower radiator supports.
  50.  

To install:

  1. Install the 2 radiator support cushions and the 2 lower radiator supports.
  2.  
  3. Install the cooling fan assembly to the radiator assembly by engaging them at the bottom. Engage the 3 claws to secure the cooling fan assembly to the radiator assembly.
  4.  
  5. Install the radiator assembly to the vehicle together with the cooling fan assembly.
    NOTE
    Make sure that the cooler condenser assembly and radiator assembly do not come into contact with each other.

  6.  
  7. Install the reserve tank cap sub-assembly to the reserve tank.
  8.  
  9. Install the engine room ECU outlet duct to the engine room ECU box.
  10.  
  11. Install the 4 bolts and the cooler condenser assembly to the radiator assembly. Tighten the 4 bolts to 44 inch lbs. (5 Nm).
  12.  
  13. Install the radiator outlet hose to the radiator assembly and secure it with the clips. Make sure that the claws on the clips are facing downward.
  14.  
  15. Install the radiator inlet hose to the radiator assembly and secure it with the clips.
  16.  
  17. Install the upper radiator support as follows:


    1. Install the 5 bolts and the upper radiator support. Tighten the bolts to 71 inch lbs. (8 Nm).
    2.  
    3. Install the 6 wire harness clamps and the No.2 engine room wire.
    4.  
    5. Connect the clamp and the No.2 cooling fan motor connector.
    6.  
    7. Connect the clamp and the cooling fan motor connector.
    8.  
    9. Connect the 4 wire harness clamps and the 3 connectors.
    10.  

  18.  
  19. Install the hood lock assembly as follows:


    1. Install the 2 bolts and the hood lock assembly to the upper radiator support. Tighten the bolts to 71 inch lbs. (8 Nm).
    2.  
    3. Install the hood lock nut and the hood lock nut cap. Tighten the nut to 71 inch lbs. (8 Nm).
    4.  
    5. Connect the connector.
    6.  

  20.  
  21. Connect the clamp, and install the 3 screws and the hood lock control cable cover.
  22.  
  23. Install the millimeter wave radar sensor assembly (w/ Dynamic Radar Cruise Control System).
  24.  
  25. Install the air cleaner cap with air cleaner hose.
  26.  
  27. Connect the No. 2 ventilation hose.
  28.  
  29. Install the No. 1 inlet air cleaner.
  30.  
  31. Connect the 2 clips, and install the radiator support opening cover.
  32.  
  33. Install the front bumper energy absorber.
  34.  
  35. Install the front bumper assembly.
  36.  
  37. Refill the engine cooling system.
  38.  
  39. Connect the negative battery cable.
  40.  
  41. Start the engine and check system for coolant leaks.
    WARNING
    Exposure to radio frequency emissions is hazardous to your health. It is hazardous to your health to be within 7.9 inches (20cm) of the device's radio frequency aperture.


    NOTE
    Perform measurements on a level surface. Make sure that no large pieces of metal are within a 10m (32.81 ft) x 14m (45.93 ft) area in front of the vehicle. If possible, the surrounding area should also be free of large metal objects.

  42.  
  43. Adjust the millimeter wave radar sensor assembly as follows:


    1. Check the tire pressure and adjust it if necessary and remove all excess weight from the vehicle (luggage, heavy objects, etc. ).
    2.  
    3. Check and adjust the vertical direction of the radar sensor.
    4.  
    5. Remove dust, oil, and foreign matter from the radar sensor's level rack.
    6.  
    7. Set a level on the radar sensor's level rack.

      Click image to see an enlarged view

      Fig. Adjusting screw A of the millimeter wave radar sensor.-IS 250 and IS 350

    8.  
    9. Check that the air bubble is within the red frame on the level. OK: The air bubble is within the red frame on the level. If the bubble is not within the red frame, use a hexagon wrench to adjust screw A until the air bubble is within the red frame.

      The adjustable range within the red frame on the level is + - 0.2°.
       
      The target angle is +0.2° (upward angle of 0.2°).
       

    10.  
    11. Adjust the reflector height.
    12.  
    13. Adjust the reflector so that the center of the SST 09870-60000 (09870-60010, 09870- 60040) reflector is the same height as the millimeter wave radar sensor.
    14.  
    15. Prepare a 10m (32.81 ft) string, a string with a sharp-pointed weight (plumb bob), and a 5m (16.41 ft) tape measure.
    16.  
    17. Place the reflector.
    18.  
    19. Hang the string (with weight) from the center of the vehicle's rear emblem. Mark the vehicle's rear center point on the ground. Repeat the same procedure for the front of the vehicle.
    20.  
    21. Set one end of the 10m (32.82 ft) string on the vehicle's rear center point. Run the string over the vehicle's front center point to a position 5m (16.41 ft) beyond the vehicle front center point, as shown in the illustration. Mark the 5m (16.41 ft) position.
    22.  
    23. Using a tape measure, measure 12mm (0.47 in.) to the left of the 5m (16.41 ft) position. Place the reflector at that position.
      NOTE
      Perform the operation as precisely as possible.

    24.  
    25. Adjust the radar beam axis by first connecting the intelligent tester to the Controller Area Network Vehicle Interface Module (CAN VIM). Then connect the CAN VIM to the Data Link Connectors 3 (DLC3).
    26.  
    27. Turn the engine switch on (IG).
    28.  
    29. Turn the intelligent tester main switch on, and turn the cruise control main switch on.
    30.  
    31. Select "1: OBD/MOBD".
    32.  
    33. Press the "ENTER" key.
    34.  
    35. Select "8: RADAR CRUISE".
    36.  
    37. Press the "ENTER" key.
    38.  
    39. Select "5: BEAM AXIS ADJUST".
    40.  
    41. Press the "ENTER" key. Pressing the "ENTER" key will make the ECM transfer to BEAM AXIS ADJUST MODE.
    42.  
    43. If an error message is displayed on the screen, initialization of the distance control ECU may not be completed. Initialize the distance control ECU.
    44.  
    45. When the ECM transfers to BEAM AXIS ADJUST MODE, the buzzer sounds for 1 second.
    46.  
    47. Press the "ENTER" key.
    48.  
    49. Press the "ENTER" key.
    50.  
    51. After the CRUISE main indicator light illuminates, press the "ENTER" key.
    52.  
    53. Press the "ENTER" key.
    54.  
    55. Check that a distance of 5 m (16.41 ft) is displayed on the tester.
    56.  
    57. If the distance is 0 m (0 ft), the sensor cannot detect the target. Reconfirm that there is no metal in the surrounding area.

      Click image to see an enlarged view

      Fig. Display screen for adjusting the millimeter wave radar sensor.-IS 250 and IS 350

    58.  
    59. Check that a value between 0.0 and 6.3 is displayed in the meter display area A.
    60.  
    61. Check that a value between 0.0 and 20.67 is displayed in the feet display area B.
    62.  
    63. Check that LEFT or RIGHT is displayed in area C.
    64.  
    65. Check that an angle value between 0.0 and 6.3 is displayed in area D. While using the intelligent tester BEAM AXIS ADJUST MODE, the actual direction and angle of the radar sensor may be different from the intelligent tester's data. In such a case, the deviation is displayed on the combination meter's multi-information display.
    66.  
    67. Check and adjust the horizontal direction of the radar sensor.
    68.  
    69. Check that the divergence of the radar beam axis is 0°. Standard: 0° (Both right and left) If the axis is not as specified, use a hexagon wrench to adjust screw B until the divergence of the radar beam axis is 0°.

      Click image to see an enlarged view

      Fig. Adjusting screw B of the millimeter wave radar sensor.-IS 250 and IS 350

    70.  
    71. Based on the measured divergence of the beam axis, turn and adjust screw B for horizontal adjustment of the millimeter wave radar sensor using a hexagon wrench.
    72.  
    73. If "LEFT SIDE: 1.0°" is displayed, the divergence is 1.0° in the left direction. Turn screw B approximately 3 turns to the negative (-) side.
    74.  
    75. If the value does not change to 0°, it is possible that the sensor is aiming at something different. Reconfirm that there are no reflective materials in the surrounding area.
    76.  
    77. Reset the radar sensor's driving learning values. Prepare a type of metal that can block radio waves, such as aluminum foil. Cover the radar sensor's left half with the metal for 10 seconds.
    78.  
    79. Be sure to keep the reflector in place and make sure that there is nothing between the sensor's left half and the reflector.
    80.  
    81. When the reset is completed, the buzzer sounds for 10 seconds.
    82.  
    83. Disconnect the intelligent tester from the DLC3.
    84.  
    85. Recheck and readjust the vertical direction of the radar sensor.
    86.  
    87. Set a level on the radar sensor's level rack.
    88.  
    89. Check that the level's air bubble is within the red frame. OK: Level's air bubble is within red frame. If the bubble is not within the red frame, use a hexagon wrench to adjust screw A until the level's air bubble is within the red frame.
    90.  
    91. The adjustable range within the red frame is + -0.2°.
    92.  
    93. The target angle is +0.2° (upward angle of 0.2°).
    94.  

  44.  
  45. Start the engine and charge the battery.
  46.  
  47. Aim and adjust the fog lights.
  48.  
  49. Install engine under cover.
  50.  
  51. Install V-bank cover sub-assembly.
  52.  
  53. Install the left and right engine room side covers.
  54.  
  55. Install the cool air intake duct seal.
  56.  



Click image to see an enlarged view

Fig. Exploded view of the radiator assembly and related components.-LS 400

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Disconnect the negative battery cable. Wait at least 90 seconds before performing any work.
  4.  
  5. Remove the oil pan protector.
  6.  
  7. Remove the engine under cover.
  8.  
  9. Drain engine coolant.
  10.  
  11. Remove battery clamp cover.
  12.  
  13. Remove the air cleaner inlet.
  14.  
  15. Remove the radiator reservoir hose.
  16.  
  17. Disconnect the upper and lower radiator hoses.
  18.  
  19. Disconnect the A/T oil cooler hoses from the radiator.
  20.  
  21. Remove the 2 clips, disconnect the claw of the No.2 fan shroud from the hook of the No.1 fan shroud, and remove the No.2 fan shroud.
  22.  
  23. Remove the radiator assembly as follows:


    1. Disconnect the ECT switch connector for the A/C cooling fan.
    2.  
    3. Disconnect the upper sides of the RH and LH cool air ducts.
    4.  
    5. Remove the nut and upper radiator support. Remove the 2 upper radiator supports.
    6.  
    7. Lift out the radiator assembly.
    8.  
    9. Remove the 2 lower radiator supports from the radiator.
    10.  

  24.  
  25. Remove the 4 bolts and No. 1 fan shroud.
  26.  

To install:

  1. Install the fan shroud with the 4 bolts. Tighten the bolts to 44 ft. lbs. (5 Nm).
  2.  
  3. Install the radiator assembly as follows:


    1. Install the 2 lower radiator supports to the radiator.
    2.  
    3. Place the radiator assembly on the body bracket.
    4.  
    5. Install the radiator with the 2 upper radiator supports and 2 nuts. Tighten the 2 nuts to 10 ft. lbs. (13.5 Nm).
    6.  
    7. Install the upper sides of the RH and LH cool air ducts.
    8.  
    9. Connect the ECT switch connector for the A/C cooling fan.
    10.  
    11. After installation, check that the rubber cushion of the support is depressed.
    12.  

  4.  
  5. Install the No. 2 fan shroud as follows:


    1. Connect the claw of the No.2 fan shroud to the hook of the No.1 fan shroud.
    2.  
    3. Install the No.2 fan shroud with the 2 clips.
    4.  

  6.  
  7. Connect the upper and lower radiator hoses.
  8.  
  9. Connect the A/T oil cooler hoses from the radiator.
  10.  
  11. Install the radiator reservoir hose.
  12.  
  13. Refill the engine cooling system.
  14.  
  15. Connect the negative battery cable.
  16.  
  17. Start the engine and check system for coolant leaks.
  18.  
  19. Check engine coolant level.
  20.  
  21. Install the air cleaner inlet.
  22.  
  23. Install battery clamp cover.
  24.  
  25. Install the engine under cover.
  26.  
  27. Install the oil pan protector.
  28.  



Click image to see an enlarged view

Fig. Exploded view of the radiator assembly and related components.-LS 430

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Disconnect the negative battery cable. Wait at least 90 seconds before performing any work.
  4.  
  5. Remove the engine under cover No. 1.
  6.  
  7. Remove the air cleaner inlet No. 1.
  8.  
  9. Drain engine coolant.
  10.  
  11. Remove V-bank cover.
  12.  
  13. Remove intake air connector pipe.
  14.  
  15. Disconnect the upper and lower radiator hoses.
  16.  
  17. Disconnect the oil cooler hoses from the radiator.
  18.  
  19. Remove the air cleaner assembly.
  20.  
  21. Remove the radiator and fan assembly as follows:


    1. Disconnect the cooling fan ECU connector.
    2.  
    3. Remove the 2 nuts and 2 radiator upper supports.
    4.  
    5. Remove the radiator and fan assembly.
    6.  
    7. Remove the 2 radiator lower supports.
    8.  

  22.  
  23. Remove the fan assembly as follows:


    1. Disconnect the radiator reservoir hose from the radiator.
    2.  
    3. Remove the 6 bolts and fan.
    4.  

  24.  

To install:

  1. Install the fan assembly as follows:


    1. Install the fan with the 6 bolts and tighten to 44 inch lbs. (5 Nm).
    2.  
    3. Connect the radiator reservoir hose to the radiator.
    4.  

  2.  
  3. Install the radiator and fan assembly as follows:


    1. Install the 2 radiator lower supports to the radiator.
    2.  
    3. Attach the 2 radiator lower supports on the radiator to the body bracket.
    4.  
    5. Install the radiator and fan assembly with the 2 radiator upper supports and 2 nuts. Tighten the 2 nuts to 10 ft. lbs. (13.5 Nm).
    6.  
    7. Connect the cooling fan ECU connector.
    8.  

  4.  
  5. Connect the oil cooler hoses to the radiator.
  6.  
  7. Connect the upper and lower radiator hoses.
  8.  
  9. Install intake air connector pipe.
  10.  
  11. Install V-bank cover.
  12.  
  13. Install the air cleaner assembly.
  14.  
  15. Install the air cleaner inlet No. 1.
  16.  
  17. Refill the engine cooling system.
  18.  
  19. Connect the negative battery cable.
  20.  
  21. Start the engine and check system for coolant leaks.
  22.  
  23. Install the engine under cover No. 1.
  24.  

 
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