Part 3

PRECAUTION (Continued)

7. ULTRASONIC SENSOR REPLACEMENT PROCEDURE

ULTRASONIC SENSOR INSTALLATION POSITION AND COMPONENTS

HINT: Clearance between the bumper cover hole and the sensor tip (paint film thickness included).

HINT: Uniformly matching up the gaps in the diameter will improve the appearance quality of the vehicle.

a. REMOVING THE RETAINERS

1. Remove the sensor from the retainer.
2. Heat the retainers.

3. Lightly pull up on the retainer while heating it until it begins to come off from the bumper, and remove it while heating at the same temperature.

NOTICE: Wear cotton gloves to prevent burn injuries burned.

b. REMOVING THE ADHESIVE

1. Remove the remaining adhesive with a putty spatula (no heating is necessary).

2. Degrease the surface.

c. CLEAN THE BUMPER COVER

NOTICE:
- When there is any dirt such as oil, dust and tape residue on the bumper cover, wipe it off using cloth, gauze, etc. that is soaked with non-residue solvent.
- Wipe the cover in one direction.

d. DETERMINE THE CENTER OF THE SENSOR INSTALLATION POSITION
1. Wrap the rubber part of the sensor tip with masking tape 3 or 4 times.

NOTICE:
- Wrap masking tape so that there is no clearance between the sensor and tape, as shown in the illustration.
- Wrap the tape so that it has no wrinkles.

HINT: To make the tape application easier, lightly fold the tape so that it is roughly the shape of the sensor.

2. Pinch the tip of the tape to make it easier to insert it into the sensor installation hole of the bumper cover.

Check if there is clearance between the sensor tape and sensor installation hole.

HINT: If there is no clearance, adjust it by decreasing the number of times the tape is wrapped. If there is excessive clearance, adjust it by increasing the number of times the tape is wrapped.

e. APPLY PRIMER

1. Cover the sensor installation hole with protective tape cut to a square with a length/width of 25 mm (0.98 in.).

2. Using a brush or felt, apply primer or equivalent to the retainer installation area.

NOTICE:
- Use a clean brush or felt.
- Do not allow primer to contact the front surface of the bumper cover.
- A thin layer of primer will be left behind if it is applied on painted surfaces so apply to protect the painted surface.
- Do not touch surfaces where primer has been applied until tape has been applied.

3. Do not touch the bumper cover until the primer has dried.Recommended drying time: 10 minutes or more {23° C (73° F)}.
4. Confirm that the primer has completely dried by touching the bumper cover. Then remove the protective tape.

f. INSTALL THE ULTRASONIC SENSOR RETAINER

1. Remove the peeling paper from the retainer.

NOTICE: Do not touch the sensor after removing backing paper.

2. Insert the sensor tip into the retainer hole area until the claws are attached.
3. Confirm the direction of the connector's connection position.

4. Then insert the tape on the tip of the sensor into the sensor installation hole of the bumper cover, and set the retainer on the bumper cover.

NOTICE: Do not completely install the retainer at this time.

5. Remove the tape from the tip of the sensor.
6. Check if the clearance between the sensor tip and sensor installation hole of the bumper cover is as shown in the illustration. (Check the entire circumference of the sensor tip.)

HINT: If the clearance is not as specified, adjust the sensor position by moving it vertically and horizontally.

7. Firmly press the retainer with your hands.

HINT: When it is difficult to press with your hands, use a resin spatula to press it.

NOTICE:
- As the retainer's double-sided tape cannot be reused, make sure to confirm the sensor's installation position before the application.
- The retainer's double-sided tape cannot be reused. If the retainer is not installed properly, remove the retainer and perform the installation procedures from the beginning again.

8. PRECAUTIONS WHEN REPAIRING THE REAR BUMPER COVER
a. AREA OF REAR BUMPER COVER THAT MILLIMETER WAVE PASSES THROUGH

NOTICE: The waves that are transmitted by the rear millimeter wave radar sensor are sent and received through the rear bumper cover. Therefore, the paint film thickness on the rear bumper cover affects the ability to send and receive these waves. Strictly follow the (b) precautions when repairing within area A shown in the above illustration.

b. POSSIBILITY OF REPAIR WITHIN AREA A

c. PAINT REFINISHING POSSIBILITY INSPECTION PROCEDURES
1. If this is the first repair (no repair history), normal paint refinishing is possible with no inspection. However make sure the color base film thickness is (micro m) or less.

HINT: Target paint thickness (black and white concealment)

2. If this is the second repair or more (including repainting) or the repair history is uncertain, refer to the LEXUS repair procedure to confirm whether the rear bumper cover should be replaced, repaired or painted.

NOTICE:
- If this is not the first paint refinishing, check whether painting is possible before making repairs.
- This inspection only determines whether paint refinishing is possible, it does not guarantee sensor performance after the paint is refinished.

9. REPAIR PROCEDURE OF HEADLIGHT RETAINER
- For HID Headlight
a. INSTALL UPPER HEADLIGHT PROTECTOR RETAINER

HINT:
- If the installation area of the headlight is damaged, use the supply retainer for low-cost repair.
- Ensure that the headlight is not damaged.

1. Cut off the part shaded in the illustration and smooth with sandpaper.

NOTICE: After cutting off the part, place the headlight protector retainer against the bosses, and gradually file away the old bracket if it interferes with the installation of the supply retainer.

2. Install the headlight protector retainer with the screw.

b. INSTALL LOWER HEADLIGHT PROTECTOR RETAINER

HINT: If the installation area of the headlight is damaged, use the supply retainer for low-cost repair. Ensure that the headlight is not damaged.

2. Install the headlight protector retainer with the screw.

- For LED Headlight
a. INSTALL UPPER HEADLIGHT PROTECTOR RETAINER

HINT:
- If the installation area of the headlight is damaged, use the supply retainer for low-cost repair.
- Ensure that the headlight is not damaged.

2. Install the headlight protector retainer and bracket with the screw.

b. INSTALL LOWER HEADLIGHT PROTECTOR RETAINER

HINT: If the installation area of the headlight is damaged, use the supply retainer for low-cost repair. Ensure that the headlight is not damaged.

2. Install the headlight protector retainer with the screw.

10. PROCEDURES NECESSARY WHEN BATTERY TERMINAL IS DISCONNECTED/RECONNECTED
a. THE WORK LIST: USA, Canada

NOTICE: After the power switch is turned OFF, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the power switch OFF, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal.

b. THE WORK LIST: Except USA, Canada

11. PROCEDURES NECESSARY WHEN ECU OR OTHER PARTS ARE REPLACED
a. THE WORK LIST: USA, Canada

b. THE WORK LIST: Except USA, Canada

12. DESCRIPTION OF THE DELIVERABLE PAINT FINISHING QUALITY AND REPAIR POINTS TO REMEMBER
a. DESCRIPTION OF THE DELIVERABLE PAINT FINISHING QUALITY
1. Wet sanding is conducted after applying the intermediate coat and after applying the color base or the first clear coat to create a paint appearance with the texture and luster consistent with the quality of the Lexus brand. This improves the smoothness and luster of the clear coat and ensures an appearance quality that is one level above the Toyota brand. In addition, a double clear coat should be used for deeper paint colors to improve the appearance quality.
2. Although there is a difference in the appearance quality in the texture and luster compared to Toyota brand vehicles, there is no change in the type of paint used.

b. POINTS TO REMEMBER WHILE REPAIRING
1. Although it is possible to repair using the same repair procedure as used previously, it is necessary to apply a clear coat and sand with an emphasis on recreating the smoothness of the texture and creating a coat of the appropriate thickness.
- Before repairing, after confirming the texture of the surrounding panels, sand and paint the panel to match the texture.
- For deeper colors, make sure to apply a coat of the appropriate thickness and to match up the texture with surrounding panels (undamaged areas).

HINT: In certain cases, matching up the texture and luster by applying a double clear coat based on the number of panels (area) to be painted will reduce the work time because sanding requires additional work time.

13. PRECAUTIONS FOR SRS AIRBAG SYSTEM
a. Handling of a vehicle that has been damaged in a collision.
1. Refer for the SRS airbag system inspection procedures.
2. When using an electric welder, first remove all airbags and seat belt pretensioners.
3. If impacts are likely to occur to the front airbag sensors, side airbag sensors, rear side airbag sensors, center airbag sensor or seat position sensor, remove each sensor as necessary beforehand.
4. Do not allow the front airbag sensors, side airbag sensors, rear side airbag sensors, center airbag sensor or seat position sensor to become heated to high temperatures.
5. Check the wire harnesses and connectors for damage and/or melting, as some areas of the airbags and seat belt pretensioners may heat up to several hundred degrees when they operate.

14. PRECAUTIONS FOR RESIN PARTS
a. PLASTIC PROPERTIES CHART
1. When repairing, some parts may be deformed by the heat. Therefore, confirm the properties of the plastic parts, and remove parts beforehand as necessary.

b. THE PLASTIC BODY PARTS MATERIAL LIST