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Strange whirring noise when car is off [Update: fan noise while parked is not unusual]

Discussion in 'Model 3' started by hcdavis3, Dec 3, 2019.

  1. hcdavis3

    hcdavis3 HCD3

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    This just started yesterday. Coming from the frunk area driver side. I rebooted the car and it’s still there. HVAC off, radio muted. Anyone else seen (heard) this. Next I’ll try shutting off the car. Strange.
     
  2. Needsdecaf

    Needsdecaf Member

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    Yes, my car does this when not asleep. Not sure if cooling fan or coolant pump or what. Has always done this from day one.
     
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  3. hcdavis3

    hcdavis3 HCD3

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    Thanks Needs. How long does it last? I last checked a half hour ago, and will check now.
     
  4. hcdavis3

    hcdavis3 HCD3

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    Just checked. Car idling for an hour and 8 minutes, whirring noise still there. I’ll check again when it goes to sleep.
     
  5. jkoya

    jkoya NA2 NSX

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    Mine does this occasionally, but I've never timed how long the noise lasts....
     
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  6. BluestarE3

    BluestarE3 Active Member

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    Yeah, my wife used to tell me the car must be alive because it's breathing heavily when she goes into the garage to do the laundry. I told her to ignore it unless it starts pawing at the door to come into the house. :eek:
     
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  7. ecarfan

    ecarfan Well-Known Member

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    Sounds like the BMS (Battery Management System) cooling fan.
     
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  8. CharleyBC

    CharleyBC Active Member

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    A Tesla is never truly off. If memory serves, there was a software release some months back that increased the parked fan noises. It’s trying to dry out the AC condensation so it doesn’t get stinky.

    Last February we hosted a crowd at our house, and my wife and I slept on a camp bed in the garage, giving our room to others. Our roommate was our Model 3. It made a variety of clicks, thunks and whirs from time to time all night. Even a sleeping Tesla wakes up and yawns and stretches.
     
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  9. Needsdecaf

    Needsdecaf Member

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    Runs until the car "goes to sleep". The problem is, however, that while at home, my car doesn't sleep that often as the WiFi keeps it awake. When at work it sleeps fine, but at home, not so much I've given up worrying about it because the vampire drain is pretty slight or the car is plugged in.
     
  10. Kirby64

    Kirby64 Member

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    The WiFi doesn't matter for sleeping. It probably has to do with the fact it's likely plugged in at home.

    Either way, the sound is some sort of coolant or inverter pump if it's from the rear of the car.

    Front of the car is where the AC condenser fan noises come from.
     
    • Informative x 1
  11. ZOMGVTEK

    ZOMGVTEK Member

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    My car is almost always awake for 2 hours after every drive. Best I can tell, its how its designed and you can't do much about it.
     
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  12. XLR82XS

    XLR82XS D M C

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    Ditto. They make lots of noises when parked - I don't worry about and get on with my life.
     
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  13. AlanSubie4Life

    AlanSubie4Life Efficiency Obsessed Member

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    It comes from here, as far as I can tell, and is present when the AC & fan are off. It's probably a pump circulating coolant.

    IMG_6222.jpg
     
    • Informative x 1
  14. hcdavis3

    hcdavis3 HCD3

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    Thanks very much Alan.
     
  15. deadlion

    deadlion Member

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    Trying turning on Climate via the app, then turn climate off via the app after 5-15 secs.

    I've had success doing this in the past when it did not seem the fan would stop on a mild temp day.
     
    • Informative x 1
  16. hcdavis3

    hcdavis3 HCD3

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    Wondering if this contributes to vampire drain. Maybe people don’t hear the sound.
     
  17. hcdavis3

    hcdavis3 HCD3

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    Thanks Dead.
     
  18. Candleflame

    Candleflame Active Member

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    that's a bit odd. Even in 40C my car takes I think around 20min.
     
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  19. ZOMGVTEK

    ZOMGVTEK Member

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    Really? My car does this every day without fail at work and home. Oddly enough it often times sleeps right away when it’s parked in a parking lot. Is it just the Wi-Fi connection that’s causing it to stay awake or something?
     
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  20. AlanSubie4Life

    AlanSubie4Life Efficiency Obsessed Member

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    Possibly. People report that turning off data sharing and shutting off the WiFi prior to exiting the car (it turns back on if you open the door again) helps vampire drain considerably, so that would be somewhat consistent.

    My theory (it's completely unsubstantiated) is that this is the pump providing coolant to the MCU, so that would make sense.
     
    • Informative x 1

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