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2017 Model X 90D - Falcon Wing Door Sensor Errors & Not Closing

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Jason D. · rep 0 · May 22, 5:21 AM · 1 replies · solved · Question

Vehicle: 2017 Tesla Model X 90D

Hi everyone,

I'm having a really annoying issue with the Falcon Wing Doors on my 2017 Tesla Model X 90D. The driver's side door has started acting up. Sometimes it won't close completely, or it will close and then immediately pop open a few inches. I also get 'Door Ajar' warnings on the screen even when it looks fully closed.

I've tried cleaning the sensors along the edge of the door, thinking maybe something was obstructing them, but that hasn't helped. It seems like a sensor issue, or maybe something with the motor or latch mechanism. This is making it difficult to lock the car securely.

Has anyone else experienced these kinds of Falcon Wing Door problems with their Model X? What was the diagnostic process like? Any tips before I take it in for service? Thanks for any help!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 5:21 AM

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ClearTheCode admin answer:

Falcon Wing Door (FWD) issues on a 2017 Tesla Model X 90D, especially involving sensor errors and improper closing, are not uncommon and can be quite complex due to the sophisticated nature of these doors. The 'Door Ajar' warning when the door appears closed strongly suggests a sensor or latch mechanism problem.

Potential Causes:

  • Faulty Hall Effect Sensors: These sensors detect the door's position and whether it's fully closed. If one is malfunctioning, the car's Body Control Module (BCM) might incorrectly read the door's status.
  • Ultrasonic Sensors Malfunction: The FWDs use multiple ultrasonic sensors to detect obstacles. If one is faulty or misaligned, it might falsely detect an obstruction, causing the door to reverse or not close fully.
  • Latching Mechanism Issue: The motorized latch itself could be faulty, preventing it from securely engaging or disengaging.
  • Wiring Harness Damage: Over time, the wiring running through the door hinges can become fatigued or damaged, leading to intermittent sensor or motor communication.
  • Actuator/Motor Problem: The motor responsible for opening and closing the door could be failing or experiencing an internal fault.
  • Calibration Drift: The FWDs require precise calibration. Over time, this calibration can drift, leading to erratic behavior.

When to See a Shop:

You should schedule a service appointment with Tesla immediately. FWD issues are highly specialized and require Tesla's proprietary diagnostic tools and trained technicians. These doors are integral to the vehicle's safety and security, and a malfunctioning door can pose a risk. Do not attempt to force the door or perform extensive DIY repairs, as this could cause further damage.

What to Expect at the Shop:

  1. Diagnostic Scan: Technicians will connect to the vehicle to retrieve specific Body Control Module (BCM) and door control unit fault codes. These codes are crucial for identifying the exact sensor or component causing the issue.
  2. Sensor Calibration/Testing: They will test and potentially recalibrate all FWD sensors (Hall effect, ultrasonic, and pinch sensors).
  3. Latching Mechanism Inspection: The latch assembly will be inspected for mechanical wear or electrical faults.
  4. Wiring and Actuator Check: The wiring harness and the door's opening/closing actuators will be thoroughly checked for continuity and proper function.
  5. Software Update: Sometimes, a software update can resolve minor glitches affecting door operation.
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