2025-10-07

Diagnosis: Falcon Door Ultrasonic (Diagnosis Only)

Correction code 11330401832 FRT: 0.60 NOTE: Unless otherwise explicitly stated in the procedure, the above correction code and FRT reflect all of the work required to perform this procedure, including the linked procedures. Do not stack correction codes unless explicitly told to do so. NOTE: See Flat Rate Times to learn more about FRTs and how they are created. To provide feedback on FRT values, email ServiceManualFeedback@tesla.com. NOTE: See Personal Protection to make sure wearing proper PPE when performing the below procedure.NOTE: See Ergonomic Precautionsfor safe and healthy working practices.

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Warning
This procedure is a DRAFT. Although it has been validated, Warnings and Cautions might be missing. Follow safety requirements and use extreme caution when working on or near High Voltage systems and components.
  • 2025-10-06: Released new procedure.

Disassembly

  1. Inspect the rear door exterior paint surface for damage, defects, signs of body repairs, paint modifications, or third-party vinyl wrap installation.
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    Note
    If the paint surface has been modified, recommend to revert the modification back to the original. Otherwise, proceed to the next step.
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    Note
    Tesla does not support third party paint modifications.
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    Note
    If a wrap is installed and both doors are falsely reporting objects, stop the diagnosis and recommend wrap removal before proceeding.
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    Note
    If a wrap is installed and only one door is falsely reporting objects, proceed with diagnosis.
  2. Open the LH front door.
  3. Lower the LH front window.
  4. Lower the LH rear window.
  5. Open the LH falcon door.
  6. Remove the LH rear door trim panel. See Panel - Door Trim - Rear - LH (Remove and Replace).
  7. Disconnect LV power. See LV Power (Disconnect and Connect).
  8. Remove the LH rear door closeout panel. See Closeout Panel - Door - Rear - LH (Remove and Replace).

Diagnosis

  1. Pull on each leg of the ultrasonic carrier adhesive to check for loose carrier feet.
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    Note
    If the feet are loose, replace the sensor carrier and ultrasonic sensor. Otherwise, continue to the next step.
  2. Verify that none of the carrier feet are contacting the butyl patch.
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    Note
    If any of the carrier feet are contacting the butyl patch, replace the sensor carrier and ultrasonic sensor. Otherwise, continue to the next step.
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    Note
    The carrier feet should be centered in the round butyl patch openings.
  3. Verify that the sensor carrier foam disc is present.
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    Note
    If the foam disc is missing, replace the sensor carrier and ultrasonic sensor. Otherwise, continue to the next step.
  4. Inspect for bubbles in the butyl patch surface.
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    Note
    If bubbles are present, smooth out any bubbles with a roller. Otherwise, continue to the next step.
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    Note
    Replace the butyl patch if it is damaged or not sticking to the door surface.
  5. Remove the LH ultrasonic sensor cap, spring, and spacer. Inspect for a missing cap, spring, spacer, or sensor.
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    Note
    If one or more components are missing, replace the component(s). Otherwise, continue to the next step.
  6. Inspect the LH Ultrasonic Sensor harness connector pigtail for a missing or unclipped harness clip.
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    Note
    If the harness clip is missing or unclipped, replace or correct the harness clip and replace the ultrasonic sensor. Otherwise, continue to the next step.
  7. Inspect the LH Ultrasonic sensor alignment to carrier. Verify that the sensor contacts the sensor carrier and is not crooked.
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    Note
    If the sensor is misaligned, replace the ultrasonic sensor. Otherwise, continue to the next step.
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    Note
    The ultrasonic sensor must be centered in the sensor carrier opening.
  8. Lightly press on the back of the LH Ultrasonic sensor. Verify that the sensor does not move in farther towards the inner door surfaces.
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    Note
    If the sensor moves, replace the sensor and check spring installation. Otherwise, continue to the next step.
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    Note
    The tapered end of spring must be pointed away from sensor when installed.
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    Note
    Spring tension may need to be increased by manually extending the spring.
  9. Perform a wiggle test on the LH ultrasonic sensor. Verify that the sensor does not rock back and forth or twist side-to-side.
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    Note
    If the sensor moves, replace the sensor. Otherwise, continue to the next step.
  10. Disconnect the LH ultrasonic sensor harness connector.
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    Note
    1x connector, 1x clip
  11. Pull the ultrasonic sensor away from the door surface to release the adhesive connection to the door and remove the sensor.
  12. Inspect the ultrasonic sensor adhesive pad for discolored adhesive that remained on the sensor.
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    Note
    If discolored adhesive is present, replace the sensor. Otherwise, continue to the next step.
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    Note
    If the adhesive pad remains on the door surface, remove the adhesive from the door and proceed to the next step.
  13. Inspect the sensor mounting surface on the inner door panel for a contaminated sensor mounting surface, e-coat and paint drips, a damaged mounting surface, or a mounting surface that is rough to the touch.
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    Note
    If any of the defect conditions are found, repair the condition. Otherwise, continue to the next step.
  14. Disconnect the ultrasonic ECU logic connector.
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    Note
    1x connector. Release the black locking tab.
  15. Measure the resistance of the ultrasonic ECU ground circuit.
    1. Set the multimeter to measure resistance.
    2. Connect a 0.64 mm x 0.64 mm male test pin to the positive lead.
    3. Connect a ground clamp to the negative lead.
    4. Clamp the negative lead to the LH upper door harness ground terminal.
    5. Insert the positive test pin into cavity 13 of the ultrasonic ECU logic connector.
    6. Check for resistance above 0.5 Ω.
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    Note
    If resistance above 0.5 Ω is measured, repair or replace LH upper and LH lower door harnesses as needed. Otherwise, proceed to the next step.
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    Note
    Do not disconnect the multimeter.
  16. Wiggle test the LH upper door harness and LH lower door harness in the sections between the ultrasonic ECU logic connector and the LH upper door harness ground terminal. Verify that the multimeter does not intermittently measure above 0.5 Ω.
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    Note
    If the multimeter measures above 0.5 Ω, repair or replace the LH upper door harness and LH lower door harness as needed. Otherwise, proceed to the next step.
  17. Disconnect the multimeter leads from the harness terminal and ECU logic connector.

Reassembly

  1. Install the ultrasonic sensor. See Sensor - Ultrasonic - Rear Door - LH (Remove and Replace).
  2. Connect LV power. See LV Power (Disconnect and Connect).
  3. On the center display, select Service, then hold Calibrate Doors until the doors cycle and "Calibration Complete" appears.
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    Note
    Calibration is always after LV power is disconnected.
  4. Raise all windows.
  5. Close the front doors.
  6. Test the object detection function of the falcon doors while the vehicle is located in an open area.
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    Note
    If false object detection still occurs and all inspections and tests have passed, escalate the Toolbox session for support.