Cruise Control: Removal & Installation Lexus LS IV

INSTALLATION

HINT

A bolt without a torque specification is shown in the standard bolt chart (see SPECIFIED TORQUE FOR STANDARD BOLTS ).

1. INSTALL DRIVING SUPPORT ECU Install the ECU with the nut. NOTE: Do not use an ECU which has been dropped or subjected to any strong shocks. During the removal and installation, do not remove the drip-proof cover. When a new ECU is installed, perform initialization.
2. INSTALL DASH PANEL EXTENSION LH Install the dash panel extension with the 2 nut and bolt. Connect the connector. Attach the clamp.
3. INSTALL COWL SIDE TRIM BOARD LH (See «INSTALLATION»(ref-349734-S14494944522009120800000) )
4. INSTALL FRONT DOOR SCUFF PLATE LH (See «INSTALLATION»(ref-349734-S14494944522009120800000) )

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1. REMOVE ENGINE ROOM SIDE COVER LH (See «REMOVAL»(ref-349714-S31912998822009120800000) )
2. REMOVE ENGINE ROOM SIDE COVER RH (See «REMOVAL»(ref-349714-S31912998822009120800000) )
3. REMOVE AIR CLEANER INLET COVER SUB-ASSEMBLY (See «REMOVAL»(ref-349724-S31319866602009120800000) )
4. REMOVE COOL AIR INTAKE DUCT SEAL (See «REMOVAL»(ref-349716-S20016930692009120800000) )
5. REMOVE RADIATOR GRILLE ASSEMBLY (See «REMOVAL»(ref-349736-S03523530332009120800000) )
6. REMOVE MILLIMETER WAVE RADAR SENSOR ASSEMBLY Disconnect the sensor connector. Remove the 3 bolts and sensor.

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1. ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY CAUTION: Exposure to radio frequency emissions is hazardous to your health. It is hazardous to your health to be within 20 cm (7.9 in.) of the device's radio frequency aperture. NOTE: This device complies with FCC radio frequency emission regulations. Perform measurements on a level surface. Make sure that no large pieces of metal are within a 10 m (32.81 ft.) x 14 m (45.93 ft.) area in front of the vehicle. If possible, the surrounding area should also be free of large metal objects. Before adjusting the radar beam axis, prepare the vehicle as follows. Check the tire pressure and adjust it if necessary. Remove all excess weight from the vehicle (luggage, heavy objects, etc.). w/ Air suspension: Adjust the vehicle's height to the standard height. Check and adjust the vertical direction of the radar sensor. Remove dust, oil and foreign matter from the radar sensor's level rack. Set a level on the radar sensor's level rack. 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 bolt A until the air bubble is within the red frame. HINT: The adjustable range within the level's red frame is +-0.2° The target angle is +0.2° (upward angle of 0.2°). Result RESULT REFERENCE CHART Adjustment Direction Adjustment Procedure Adjustment Angle Vertical adjustment Upward direction: Turn bolt A to negative (-) side Downward direction: Turn bolt A to positive (+) side For every 8.4 rotations of adjustment bolt, sensor moves about 1 ° Adjust the reflector height. Adjust the reflector so that the center of the SST reflector is the same height as the millimeter wave radar sensor. SST 09870-60000 HINT: Prepare a 10 m (32.81 ft.) string, a string with a sharp-pointed weight (plumb bob), and a 5 m (16.41 ft.) tape measure. Place the reflector. Hang the string (with weight) from the center of the vehicle rear's emblem. Mark the vehicle rear's center point on the ground. Repeat for the front of the vehicle. Set one end of the 10 m (32.82 ft.) string on the vehicle rear's center point. Run the string over the vehicle front's center point to a position 5 m (16.41 ft.) beyond the vehicle front's center point, as shown in the illustration. Mark the 5 m (16.41 ft.) position. Using a tape measure, measure 12 mm (0.47 in.) to the left of the 5 m (16.41 ft.) position. Place the reflector at that position. NOTE: Perform the operation as precisely as possible. Check the radar beam axis. When using Techstream: Connect Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream main switch ON, and turn the cruise control main switch ON. Select "Connect to Vehicle". Under "Option", select "RADAR CRUISE". Select either "w/o LKA System" or "w/ LKA System". Under "System Selection Menu", select "Powertrain". Select "Radar Cruise". HINT: A buzzer will sound for 1 seconds. Follow the tester display, and continue with the adjustment. Check the following items on the laser cruise divergence data screen. NOTE: While using the Techstream beam axis adjustment mode, the actual direction and angle of the radar sensor may be different from the Techstream data. In such a case, the deviation is displayed on the combination meter's multi-information display. Confirm that the distance value is approximately 5 m (16.41 ft.). HINT: A value between 0.0 and 6.3 m (20.67 ft.) is indicated. If the distance is 0 m (0 ft.), the sensor cannot detect the target. Reconfirm that there is no metal in the specified area in front of the vehicle (refer to the 1 to read the NOTICE below it at the beginning of this adjustment procedure). Confirm that the left/right side value is between 0.0 and 6.3. HINT: If the distance is 0 m (0 ft.), the sensor cannot detect the target. Reconfirm that there is no metal in the specified area in front of the vehicle (refer to the 1 to read the NOTICE below it at the beginning of this adjustment procedure). Check and adjust the horizontal direction of the radar sensor. 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 bolt B until the divergence of the radar beam axis is 0°. Based on the measured divergence of the beam axis, turn and adjust bolt B for horizontal adjustment of the millimeter wave radar sensor using a hexagon wrench. Result RESULT REFERENCE CHART Adjustment Direction Adjustment Procedure Adjustment Angle Horizontal adjustment Right direction: Turn bolt B to positive (+) side. Left direction: Turn bolt B to negative (-) side. For every 18.6 rotations of adjustment bolt, sensor moves about 1° HINT: If "LEFT SIDE: 1.0°" is displayed, the divergence is 1.0° in the left direction. Turn bolt B approximately 18.6 turns to the negative (-) side. 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. Select "Next". The driving learning value is automatically reset. HINT: A buzzer will sound for 10 seconds. Disconnect the Techstream from the DLC3. Recheck and readjust the vertical direction of the radar sensor. Set a level on the radar sensor's level rack. Check that the level's air bubble is within the red frame. OK: Level's air bubble is within the red frame. If the bubble is not within the red frame, use a hexagon wrench to adjust bolt A until the level's air bubble is within the red frame. HINT: The adjustable range within the red frame is +/-0.20. The target angle is +0.2° (upward angle of 0.2°). Result RESULT REFERENCE CHART Adjustment Direction Adjustment Procedure Adjustment Angle Vertical adjustment Upward direction: Turn bolt A to negative (-) side Downward direction: Turn bolt A to positive (+) side For every 8.4 rotations of adjustment bolt, sensor moves about 1°

Scheme 57

1. INSTALL MILLIMETER WAVE RADAR SENSOR ASSEMBLY Install the sensor with the 3 bolts. Torque: 5.5 N*m (56 kgf*cm, 49 in.*lbf) Connect the sensor connector.
2. ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY (See «ADJUSTMENT»(ref-349744-S24444634422009120800000) )
3. INSTALL RADIATOR GRILLE ASSEMBLY (See «INSTALLATION»(ref-349736-S28013553762009120800000) )
4. INSTALL COOL AIR INTAKE DUCT SEAL (See «INSTALLATION»(ref-349716-S01754793652009120800000) )
5. INSTALL AIR CLEANER INLET COVER SUB-ASSEMBLY (See «INSTALLATION»(ref-349724-S09859827162009120800000) )
6. INSTALL ENGINE ROOM SIDE COVER LH (See «INSTALLATION»(ref-349714-S23488176532009120800000) )
7. INSTALL ENGINE ROOM SIDE COVER RH (See «INSTALLATION»(ref-349714-S23488176532009120800000) )