Lexus NX: Adjustment

Lexus NX Service Manual / Engine & Hybrid System / Cruise Control / Millimeter Wave Radar Sensor / Adjustment

ADJUSTMENT

CAUTION / NOTICE / HINT

CAUTION:

Radiofrequency radiation exposure information:

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.
This equipment should be kept with minimum distance of 20 cm (7.87 in.) between the radiator (antenna) and your body at all times during adjustment.
This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

PROCEDURE

1. PREPARATION FOR MILLIMETER WAVE RADAR SENSOR ASSEMBLY ADJUSTMENT

(a) Park the vehicle on a level surface where the area in front of the vehicle shown in the illustration is free of metal objects.

HINT:

Metal objects that have a height of 50 mm (1.97 in.) or less do not affect adjustment within 2 m (6.56 ft.) from the front of the vehicle.

*a	5 m (16.4 ft.)
*b	6 m (19.7 ft.)
*c	4 m (13.1 ft.)
*d	2 m (6.56 ft.)
*e	3 m (9.84 ft.)
*f	1.5 m (4.92 ft.)
*g	2.5 m (8.2 ft.)
	Do not place any metal objects in this area
	Do not place metal objects with a height of more than 50 mm (1.97 in.) in this area

(b) Check the levelness of the ground.

(1) Check the levelness of the ground at the 3 points shown in the illustration.

*a	3 m (9.84 ft.)
	Levelness Check Point

(2) Place the level on each levelness check point and check that the air bubble of the level is centered.

Click here

(d) Clean the radiator grille emblem or millimeter wave radar sensor assembly.

(e) Visually inspect the front of the vehicle.

HINT:

Confirm that there is no damage or deformation.

(f) Visually inspect the front bumper assembly, radiator grill and stays.

HINT:

Confirm that there is no damage or deformation.

2. MILLIMETER WAVE RADAR SENSOR ASSEMBLY VERTICALLY AND HORIZONTALLY

(a) Adjust SST (reflector) height.

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

HINT:

Make sure to align the center of SST (reflector) with the millimeter wave radar sensor (the center of the emblem).

Reference Value:

About 758 mm (2.49 ft.)

SST: 09870-60000

09870-60010

SST: 09870-60040

*a	SST (reflector)

(b) Place SST (reflector).

(1) Hang a weight with a pointed tip from the center of the symbol emblem, and mark the rear center point of the vehicle (point A) on the ground.

*a	String	*b	Weight
*c	Center	*d	Bilateral Symmetry

HINT:

Lightly flick the string with your fingers several times to confirm that the string is perpendicular to the ground.

(2) Hang a weight with a pointed tip from the center of the radiator grille emblem, and mark the front center point of the vehicle (point B) on the ground (placement position).

*a	String	*b	Weight
*c	Center	*d	Bilateral Symmetry

HINT:

Lightly flick the string with your fingers several times to confirm that the string is perpendicular to the ground.

(3) Using tape and a string, create a line that connects point B to point A and extends at least 3000 mm (9.84 ft.) beyond the front center point of the vehicle.

*a	String	*b	Tape
*c	3000 mm (9.84 ft.)	-	-

HINT:

Make sure the string is taut when securing it with tape.
Lightly flick the string with your fingers several times to confirm that the string is aligned with point B.

(4) Mark point C (SST (reflector) placement position) at a position 3000 mm (9.84 ft.) from point B.

(5) Place SST (reflector) at point C.

NOTICE:

Close all of the doors.
Ensure that nobody enters the adjustment area during the adjustment.
Do not move or shake the vehicle during adjustment (do not get in or out of the vehicle).
Do not turn off the Techstream or power switch.
If the vehicle moves or is shaken during beam axis adjustment such as during strong winds or a door is opened or closed, perform the adjustment again.

(1) Connect the Techstream to the DLC3.

(2) Turn the power switch on (IG).

(3) Turn the Techstream on.

(4) Enter the following menus: Body Electrical / Front Radar Sensor / Utility / Front Beam Axis Adjustment.

Body Electrical > Front Radar Sensor > Utility

Tester Display
Front Beam Axis Adjustment

(5) Press "Next".

(6) Perform the adjustment according to the display on the Techstream.

NOTICE:

If an error code is displayed, perform troubleshooting according to the following table, then perform the adjustment again.

Error No.	Error Description	Cause of Error	Action to be Taken
1	No target abnormality	SST (reflector) is placed incorrectly. The radiator grille emblem or millimeter wave radar sensor assembly is covered by dirt or snow.	Place SST (reflector) in the correct position. (See page 2. MILLIMETER WAVE RADAR SENSOR ASSEMBLY VERTICALLY AND HORIZONTALLY (b) Place SST (reflector))
1	No target abnormality		Clean the radiator grille emblem or millimeter wave radar sensor assembly.
2	Target distance abnormality	SST (reflector) is placed incorrectly.	Place SST (reflector) in the correct position. (See page 2. MILLIMETER WAVE RADAR SENSOR ASSEMBLY VERTICALLY AND HORIZONTALLY (b) Place SST (reflector))
3	Plural targets abnormality	There is a reflective object near SST (reflector). A person entered the adjustment area.	Remove any reflective objects.
3	Plural targets abnormality		Ensure that nobody enters the adjustment area during the adjustment. (See page 1. PREPARATION FOR MILLIMETER WAVE RADAR SENSOR ASSEMBLY ADJUSTMENT)
4	Target move abnormality	SST (reflector) was moved out of position or shaking during the adjustment due to wind. A person entered the adjustment area.	Place SST (reflector) in the correct position. (See page 2. MILLIMETER WAVE RADAR SENSOR ASSEMBLY VERTICALLY AND HORIZONTALLY (b)Place SST (reflector))
			Perform adjustment in an area with no wind.
			Ensure that nobody enters the adjustment area during the adjustment. (See page 1. PREPARATION FOR MILLIMETER WAVE RADAR SENSOR ASSEMBLY ADJUSTMENT)
5	Axis adjustment	Optical axis adjustment has not been performed.	Optical axis adjustment. (See page 2. MILLIMETER WAVE RADAR SENSOR ASSEMBLY VERTICALLY AND HORIZONTALLY (c) Front Beam Axis Adjustment)
6	Target angle abnormality	SST (reflector) is placed incorrectly. The beam axis of the millimeter wave radar sensor assembly is outside the automatic correction range.	Place SST (reflector) in the correct position. (See page 2. MILLIMETER WAVE RADAR SENSOR ASSEMBLY VERTICALLY AND HORIZONTALLY (b)Place SST (reflector))
			Check the condition of the millimeter wave radar sensor assembly.
			Check the condition of the radiator grille and front bumper assembly.
7	Radar abnormality	Operation of the millimeter wave radar sensor assembly is abnormal.	Replace the millimeter wave radar sensor assembly.
8	Radar dirtiness	There is dirt on the radiator grille emblem or millimeter wave radar sensor assembly.	Clean the radiator grille emblem or millimeter wave radar sensor assembly.
9	Temperature abnormality	The temperature around the millimeter wave radar sensor assembly is too high.	Wait until the temperature drops to the operable range (-30 to 50°C).
10	Voltage abnormality	IG power source voltage is outside the operable range of the millimeter wave radar sensor assembly.	Check the battery voltage (specified condition: 10 to 16 V).
11	External communication abnormality	CAN communication between forward recognition camera and the millimeter wave radar sensor assembly is abnormal.	Check the condition of the connectors and wire harness.
12	Radar axis aiming failure upward	The beam axis of the millimeter wave radar sensor assembly is outside the automatic correction range (upward). Road inclement is outside the standard value.	Check the condition of the millimeter wave radar sensor assembly.
			Check the condition of the radiator grille and front bumper assembly.
			Confirm road gradient.
13	Radar axis aiming failure downward	The beam axis of the millimeter wave radar sensor assembly is outside the automatic correction range (downward). Road inclement is outside the standard value.	Check the condition of the millimeter wave radar sensor assembly.
			Check the condition of the radiator grille and front bumper assembly.
			Confirm road gradient.
14	Vehicle speed abnormality	The vehicle is not stationary.	Ensure that the vehicle remains stationary.
15	Other	A mode change error occurred. Operation of the yaw rate sensor is abnormal. The vehicle is shaking.	Check for DTCs.
			Check for DTCs.
			Ensure that the vehicle remains stationary.
16	Time out	The vehicle cannot communicate with Techstream normally. The vehicle does not keep still during beam axis adjustment. Operation of the millimeter wave radar sensor assembly is abnormal.	Ensure that the vehicle is connected with the Techstream correctly. Ensure that the vehicle remains stationary. Perform beam axis adjustment again and replace the millimeter wave radar sensor assembly if the same error code is output.
17	Target parameter abnormality	Wrong mode is selected.	Perform beam axis adjustment again.
18	Vehicle information undefined	CAN communication between forward recognition camera and the millimeter wave radar sensor assembly is abnormal.	Check the condition of the connectors.

(7) Press "Exit" to finish front beam axis adjustment.

(d) Front Beam Axis Misalignment Reading:

NOTICE:

Close all of the doors.
Ensure that nobody enters the adjustment area during the adjustment.
Do not move or shake the vehicle during adjustment (do not get in or out of the vehicle).
Do not turn off the Techstream or power switch.
If the vehicle moves or is shaken during beam axis adjustment such as during strong winds or a door is opened or closed, perform the adjustment again.

(1) Enter the following menus: Body Electrical / Front Radar Sensor / Utility / Front Beam Axis Misalignment Reading.

Body Electrical > Front Radar Sensor > Utility

Tester Display
Front Beam Axis Misalignment Reading

(2) Press "Next".

(3) Perform the adjustment according to the display on the Techstream.

Specified Condition:

Vertical	-0.5 to 0.5 deg.
Horizontal	-0.5 to 0.5 deg.

NOTICE:

If the result is not as specified, perform beam axis adjustment again.

(e) Front Radar Acceleration Sensor Calibration:

(1) Enter the following menus: Body Electrical / Front Radar Sensor / Utility / Front Radar Acceleration Sensor Calibration.

Body Electrical > Front Radar Sensor > Utility

Tester Display
Front Radar Acceleration Sensor Calibration

(2) Turn the power switch off.

(3) Disconnect the Techstream from the DLC3.

(f) After beam axis adjustment completes, clear the following system vehicle control history entries.

(1) Clear vehicle control history (Dynamic radar cruise control system).

Click here

(2) Clear vehicle control history (Front camera system).

Click here

(3) Clear vehicle control history (Lane tracing assist system).

Click here

(4) Clear vehicle control history (Road sign assist system).

Click here

(5) Clear vehicle control history (Front radar sensor system).

Click here

(6) Clear vehicle control history (Pre-collision system).

Click here

(7) Clear vehicle control history (Lighting system (for Triple Beam Headlight)).

Click here

(8) Clear vehicle control history (Lighting system (for Single Beam Headlight)).

Click here

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