Millimeter Wave Radar Sensor Adjustment

Before adjusting the radar beam axis, prepare the vehicle as follows:

1. Check the tire pressure and adjust it if necessary.
   

2. Remove all excess weight from the vehicle (luggage, heavy objects, etc. ).
   

Check and adjust the vertical direction of the radar sensor.

1. Remove dust, oil, and foreign matter from the radar sensor's level rack.
   

2. Set a level on the radar sensor's level rack.
   





3. 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.
   

   HINT:

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

   Result:

   
   

   Adjustment Direction	Adjustment Procedure	Adjustment Angle
   Vertical adjustment	Upward direction: Turn screw A to negative (-) side Downward direction: Turn screw A to positive (+) side	Approx. 1.0° per turn

Adjust the reflector height.

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

   SST

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

   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.

1. 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.
   





2. Set one end of the 10 m (32.82 ft) string on the vehicle's rear center point. Run the string over the vehicle's front center point to a position 5 m (16.41 ft) beyond the vehicle front center point, as shown in the illustration. Mark the 5 m (16.41 ft) position.
   





3. 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.
   
   

   
   
   
   

   NOTICE:

   Perform the operation as precisely as possible.

Adjust the radar beam axis.

1. Connect the intelligent tester to the DLC3.
   

2. Turn the engine switch on (IG).
   





3. Turn the intelligent tester main switch on, and turn the cruise control main switch on.
   

   HINT:

   If an error message is displayed on the screen, initialization of the distance control ECU may not be completed. Initialize the distance control ECU (Click here)

   
   
   
   
   
   
   
   
   
   
   

Check and adjust the horizontal direction of the radar sensor.

1. 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°.
   





2. 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.
   
   

   Result:

   
   

   Adjustment Direction	Adjustment Procedure	Adjustment Angle
   Horizontal adjustment	Right direction: Turn screw B to positive (+) side. Left direction: Turn screw B to negative (-) side.	Approx. 0.33° per turn

   HINT:

   1. 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.
      
   2. 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.
      




3. 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 aluminum foil for 10 seconds.
   

   NOTICE:

   Be sure to keep the reflector in place and make sure that there is nothing between the sensor's left half and the reflector.

   HINT:

   When the reset is completed, the buzzer sounds for 10 seconds.

4. Disconnect the intelligent tester from the DLC3.
   

Recheck and readjust the vertical direction of the radar sensor.

1. Set a level on the radar sensor's level rack.
   





2. 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.
   

   HINT:

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

   Result:

   
   

   Adjustment Direction	Adjustment Procedure	Adjustment Angle
   Vertical adjustment	Upward direction: Turn screw A to negative (-) side Downward direction: Turn screw A to positive (+) side	Approx. 1.0°per turn