Millimeter Wave Radar Sensor: Adjustment

1. Remove all cargo from the inside of the vehicle.
2. Adjust the tire pressure to the specified value(s).

Adjust the vehicle's height to the standard height.

1. Remove any dust and oil from the level rack of the millimeter wave radar sensor assembly.
2. Set a level for use with the sensor in the center of the level rack of the millimeter wave radar sensor assembly.
   Fig 2: Identifying Level For With Sensor

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Using a screwdriver, adjust the sensor by turning the vertical adjusting bolt of the millimeter wave radar sensor assembly (bolt A) until the air bubble is centered on the red line of the level as shown in the illustration.
   Fig 3: Turning Vertical Adjusting Bolt Of Millimeter Wave Radar Sensor Assembly (Bolt A)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard: 

   0.2° upward 

   HINT:

   The adjustable range within the red frame of the level is +/-0.20.

   BOLT ADJUSTABLE RANGE REFERENCE
   
   

   Vertical adjustment

   Upward direction. Turn bolt A in minus direction Downward direction: Turn bolt A in plus direction

   For 1 complete turn of screwdriver, sensor moves about 0.12°

1. Adjust SST (reflector) so that the center of SST (reflector) is the same height as the millimeter wave radar sensor assembly.

   SST 09870-60000 (09870-60010), 09870-60040 

   Fig 4: Identifying Millimeter Wave Radar Sensor Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Hang a pointed weight from the center of the front and rear bumpers of the vehicle (center of the emblem) and accurately mark the center points on the ground.
2. Mark a point 5 m (16.4 ft.) in front of the vehicle on the line that connects the front and rear center point marks.
   Fig 5: Aligning String With Front Center Point Mark And Make Straight Line

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   HINT:

   Affix one end of a string to the rear center point mark and extend the string 5 m (16.4 ft.) from the front of the vehicle. Move the other end of the string left and right to align the string with the front center point mark and make a straight line.

3. Place SST at a position 12 mm (0.472 in.) from the marked position, to the right of the vehicle.
   NOTE: Perform the operation as precisely as possible.
   Fig 6: Placing SST Position From Marked Position To Right Of Vehicle

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Connect Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream main switch ON, and turn the cruise control main switch ON.
4. Select "Connect to Vehicle".
5. Under "Option", select "RADAR CRUISE".
6. Under "System Selection Menu", select "ALL ECUs".
7. Select "Radar Cruise".

   HINT:

   A buzzer will sound for 1 second.

8. Follow the tester display, and continue with the adjustment.
9. 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.
   1. 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 ADJUSTMENT  NOTICE at the beginning of this adjustment procedure).
   2. 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 ADJUSTMENT  NOTICE at the beginning of this adjustment procedure).

1. Read the current amount of angle deviation.

   Standard: 

   0° (Both left and right) 

2. Based on the results of the beam axis deviation measurement, using a screwdriver, adjust the sensor by turning the horizontal adjusting bolt of the millimeter wave radar sensor assembly (bolt B).
   Fig 7: Turning Horizontal Adjusting Bolt Of Millimeter Wave Radar Sensor Assembly (Bolt B)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   BOLT ADJUSTABLE RANGE REFERENCE
   
   

   Horizontal adjustment

   Right direction: Turn bolt B in plus direction Left direction: Turn bolt B in minus direction

   For 1 complete turn of screwdriver, sensor moves about 0.05°

   NOTE: If it is difficult to reach a value of 0°, it is possible that the sensor is targeting an object other than SST. Reconfirm that there are no reflective objects in the surrounding area.
3. Because the driving learned value will be reset, cover the left half of the sensor with aluminum foil or equivalent (a metal material that blocks electric waves) for a period of approximately 10 seconds.
   NOTE: At this time, leave SST in place and make sure there are no objects between the right half of the sensor and the reflector.
   Fig 8: Identifying Aluminum Foil

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   HINT:

   When the value is reset, the buzzer will sound for 10 seconds, a distance value between 0 and 6.3° and a right side value between 0 and 6.3 m (20.7 ft.) will be displayed on the screen.

4. Continue the procedure according to the display to complete the beam axis adjustment.
5. Disconnect the Techstream from the vehicle.

1. Set a level for use with the sensor in the center of the level rack of the millimeter wave radar sensor assembly.
   Fig 9: Identifying Level & Sensor

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Using a screwdriver, adjust the sensor by turning the vertical adjusting bolt of the millimeter wave radar sensor assembly (bolt A) until the air bubble is centered on the red line of the level as shown in the illustration.

   Standard: 

   0.2° upward 

   HINT:

   The adjustable range within the red frame of the level is +/-0.20.

   BOLT ADJUSTABLE RANGE REFERENCE
   
   

   Vertical adjustment

   Upward direction: Turn bolt A in minus direction Downward direction: Turn bolt A in plus direction

   For 1 complete turn of screwdriver, sensor moves about 0.12°

   Fig 10: Turning Vertical Adjusting Bolt Of Millimeter Wave Radar Sensor Assembly (Bolt A)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Drive at 30 km/h (19 mph) on a straight road with good visibility while staying in the center of the lane.
   NOTE: Because the pre-collision system may activate under the following conditions, avoid conditions like these when performing the test.

   • There are objects on the side of the road at the beginning of a curve.
   • Passing an oncoming vehicle on a curve.
   • Crossing a narrow metal bridge.
   • There are metal objects on the road surface.
   • There is an oncoming vehicle when turning right.
   • Rapidly approaching a vehicle driving in front.
2. On a straight road, when passing an oncoming vehicle with no danger of collision, check that the master warning does not illuminate and that the buzzer does not sound. At the same time, check that "BRAKE!" is not displayed on the display in the combination meter.
3. If "BRAKE!" is displayed, perform the millimeter wave radar sensor assembly adjustment again.

   HINT:

   • Check the installation condition of the millimeter wave radar sensor assembly.
   • Check that the pre-collision brake switch is not pushed in.