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Significant Battery Drain on 2017 Model X While Parked

0

Mike T. · rep 0 · May 25, 4:02 AM · 1 replies · solved · Question

Vehicle: 2017 Tesla Model X 75D

Good morning everyone, I've been noticing a significant 'phantom drain' on my 2017 Tesla Model X 75D lately. If I leave it parked for a day or two, especially in my garage, the battery percentage drops much more than it used to. I'm talking about 5-8% over 24 hours, which seems excessive.

I've tried turning off Sentry Mode, Cabin Overheat Protection, and even scheduled charging, but it still seems to lose a lot of range. I don't have any third-party apps connected that would keep the car awake.

Could this be a specific module staying awake, or perhaps a software glitch? Has anyone with an older Model X experienced this and found a solution? It's becoming a real hassle for daily use. Thanks for any ideas!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 4:02 AM

0

ClearTheCode admin answer:

Excessive battery drain (often called 'phantom drain') on a parked Tesla, especially an older model like your 2017 Model X, can be frustrating and often points to an electrical component or software issue keeping the vehicle from properly 'sleeping'.

  1. Common Causes for Phantom Drain:

    • Sentry Mode: Even if you've turned it off, double-check its status. It's a significant power draw.
    • Cabin Overheat Protection: This feature uses battery power to cool the cabin. Ensure it's off or set to 'No A/C' if you don't need it.
    • Preconditioning/Scheduled Departure: If you have scheduled departure or preconditioning enabled, the car will draw power to prepare the battery and cabin.
    • Third-Party Apps/Connectivity: Any apps that frequently query your Tesla's API (like certain tracking apps or home automation integrations) can prevent the car from entering a deep sleep state.
    • Software Glitches: A software bug can sometimes prevent certain modules from shutting down correctly, causing them to draw power continuously.
    • Failing 12V Battery: A weak 12V battery can cause the main computer to work harder, leading to increased drain from the main high-voltage battery.
    • Faulty Module: A specific electronic control module (e.g., infotainment, connectivity, or even a door module) might be failing to enter sleep mode, constantly drawing power.

  2. Troubleshooting Steps:

    • Deep Sleep Test: Park your car, ensure Sentry Mode and Cabin Overheat Protection are off, and do not open the Tesla app or check on the car for at least 6-8 hours. Note the battery percentage before and after. Minimal drain (1-2%) is normal.
    • Disable Connectivity: Try disabling Wi-Fi and Bluetooth on the vehicle's screen for a period to see if it reduces drain.
    • Power Off Vehicle: For extended parking, consider using the 'Power Off' option in the safety menu (though this is not ideal for regular use).
    • Check for Recalls/Service Bulletins: Older Model X vehicles might have had specific software updates or service actions related to battery drain.

  3. When to See a Shop:

    • If you've tried all software-related solutions and the drain remains significant (5%+ per day), it's time to schedule a service appointment with Tesla.
    • They can perform advanced diagnostics to identify which specific module or system is drawing excessive power when the car should be asleep. This often involves monitoring the vehicle's electrical bus for activity.

Diagnostics: While there isn't a single OBD-II code for 'phantom drain,' Tesla technicians can review logs for:

  • UXXXX series codes: Indicating communication errors or modules failing to enter low-power states.
  • Specific module activity logs: To pinpoint which component is staying awake and consuming energy.
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