Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: Operation Check

OPERATION CHECK

HINT:

The blind spot monitor beam axis confirmation is performed to confirm whether the sensor's beam axis is correct, and perform adjustment of the beam axis by using reflector.

BLIND SPOT MONITOR BEAM AXIS CONFIRMATION

(a) When performing the blind spot monitor beam axis confirmation, move the vehicle to a place where the space shown in the illustration can be secured.

(b) Place the reflector.

(1) From the center of the rear bumper (center of the emblem), hang a weight with a pointed tip, and mark the rear center point of the vehicle on the ground (mark A).

*a	String	*b	Weight
*c	Center point	*d	Equal Distance to Center

HINT:

Lightly flick the string with your fingers several times to confirm that the string is aligned with mark A.

(2) From the center of the front bumper (center of the emblem), hang a weight with a pointed tip, and mark the front center point of the vehicle on the ground (mark B).

*a	String	*b	Weight
*c	Center point	*d	Equal Distance to Center

HINT:

Lightly flick the string with your fingers several times to confirm that the string is aligned with mark (B).

(3) Draw a vehicle center line so that it passes through mark A and B (front and rear center points).

(4) Print out the following illustration on a large piece of paper.

w/o Rear No.2 Seat w/ Rear No.2 Seat

(5) Place the printout on the floor with the point A aligned with the longitudinal center line of the vehicle.

(6) Align a piece of string with line C and mark point D at a distance of 3394 mm (11.13 ft.)*1 or 3381 mm (11.09 ft.)*2 from point A.

(7) Set the reflector at the point D shown in the illustration below.

SST: 09870-60000

09870-60010

SST: 09870-60040

(c) Perform the blind spot monitor beam axis display.

(1) Connect the Techstream to the DLC3.

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

(3) Turn the blind spot monitor system on.

(4) Turn the Techstream on.

(5) Enter the following menus: Body Electrical / Blind Spot Monitor Master or Blind Spot Monitor Slave / Utility / BSM Master Beam Axis Display or BSM Slave Beam Axis Display.

Body Electrical > Blind Spot Monitor Master > Utility

Tester Display
BSM Master Beam Axis Display

Body Electrical > Blind Spot Monitor Slave > Utility

Tester Display
BSM Slave Beam Axis Display

(6) Check the results displayed for the BSM beam axis display.

Allowable Range:

Item	Blind Spot Monitor Sensor LH	Blind Spot Monitor Sensor RH
Angle	-1.11 to +1.11°	-1.11 to +1.11°

HINT:

If the results are outside the allowable range, try again as the reflector setting position may be incorrect or a metal object may exist near the detection area.

(d) Perform the blind spot monitor beam axis adjustment.

(1) Enter the following menus: Body Electrical / Blind Spot Monitor Master or Blind Spot Monitor Slave / Utility / BSM Master Beam Axis Adjustment or BSM Slave Beam Axis Adjustment.

HINT:

When values on the axis display are in the allowable range, performing this adjustment compensates for any deviation from the normal value.

Body Electrical > Blind Spot Monitor Master > Utility

Tester Display
BSM Master Beam Axis Adjustment

Body Electrical > Blind Spot Monitor Slave > Utility

Tester Display
BSM Slave Beam Axis Adjustment

BLIND SPOT MONITOR SENSOR INSTALLATION CONDITION INSPECTION

HINT:

The blind spot monitor sensor installation condition inspection is performed to confirm whether the sensor is perpendicular to the floor surface (+/-4°) by using a jig, and that the sensor is 46 to 54° from the line parallel to the vehicle center line.

(a) Remove the rear bumper.

REAR BUMPER (w/o Rear No. 2 Seat): Click here

REAR BUMPER (w/ Rear No. 2 Seat): Click here

(b) Attach a jig similar to the one shown in the illustration to the outward facing surface of the blind spot monitor sensor and check that the measurement or angle is within the allowable range to confirm that the blind spot monitor sensor is perpendicular to the floor surface (+/-4°).

Standard

Item	A	B
Blind spot monitor sensor LH	7 mm (0.276 in.)	-7 mm (-0.276 in.)
Blind spot monitor sensor RH	7 mm (0.276 in.)	-7 mm (-0.276 in.)

Item	X	Y
Blind spot monitor sensor LH	4°	-4°
Blind spot monitor sensor RH	4°	-4°

(c) Using the sensor installation stud bolt center lines as a reference, check that the stud bolts are as shown in the illustration.

Standard:

Dimension	Specified Value
y	78 to 87 mm (3.07 to 3.43 in.)

Degree	Specified Value
A	46 to 54°