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How to properly repair the Blind Spot Monitor Sensor

Thursday, September 14, 2017 - 06:00
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Toyota Class 301 has been updated to help you repair the Blind Spot Monitor Sensor (BSMS) bracket to OEM specifications. Whenever you repair the BSMS, it is critical that the rear Blind Spot Monitor Sensor is properly oriented to ensure a successful repair. If you have previously taken this class, retaking it will ensure you benefit from the new repair information. Follow the steps below to properly repair the BSMS

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

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

STEP 3:  Use a string to draw a center line that passes through marks “A” and “B.” Lightly flick the string several times to confirm that it is aligned with marks “A” and “B.”

STEP 4:  Hang a string with a weight from the Blind Spot Monitor Sensor (BSMS) bracket (front and rear studs) and mark the positions on the ground.

STEP 5:  At a 90-degree angle, measure from the centerline of the vehicle (string) to the marked positions on the ground.

STEP 6:  Using masking tape, write the measurements on the marks on the ground. Measurements must be done in millimeters.

STEP 7:  Compare the measurements to the “Specified Value” in the repair manual illustration.

Example:

The “Specified value” in the repair manual (on position “Y”) is 78 to 87 mm. Illustration shows the view from above.

STEP 8:  Perform a “Blind Spot Monitor Sensor Installation Condition Inspection” to confirm that the sensor is perpendicular to the floor (+/- 5 degrees). Using a jig, confirm the sensor is 46 to 54 degrees from the line parallel to the vehicle centerline. 

FOR MORE INFORMATION

Find class 301: Non-Structural with Blind Spot Monitor Sensor Installation Condition Inspection Repair Procedures at Toyota’s training website— www.crrtraining.com.

Find all the specific procedures and measurements to repair the BSMS in the Toyota repair manual.

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