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Key is not in the car?

Discussion in 'Model X' started by rjdoc74, Jul 1, 2017.

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  1. rjdoc74

    rjdoc74 Member

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    So I was out with my family today. Came back to the car, loaded family, stroller, baby, etc. Got into driver seat. All of the sudden green framed message comes on "Key is not in the car". The car is off and won't start. I did a steering wheel reset. Still off. Opened/closed driver door. Still nothing. After about 2 more minutes, the car finally turned on (not sure what I did to finally make that happen). Is my battery low (I though I'd receive "battery low" warning or something)? Has anyone seen this? TIA!
     
  2. Ugliest1

    Ugliest1 S85: "Sparky"

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    One possibility is the battery in your fob is low enough that the car couldn't sense it. This happened once to me on my S, and a few times on other ICE cars that are no longer in the picture. On the S you can put the fob in the cupholder, I don't know about the X. To unlock the car with a dead fob you can place the fob just below the VIN on the windshield (again, that's how it is, or used to be!! on the S). If you have an iPhone, you can also unlock and start the car from the Tesla app, if you forget your fob or have fob problems.
     
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  3. rjdoc74

    rjdoc74 Member

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    Thanks. I ordered replacement battery and will change it asap. I've read on tesla forums that this sometimes happens after new software update which I just had 2 days ago.
     
  4. roblab

    roblab Active Member

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    These use the standard 3032 batteries that are available almost anywhere batteries are sold. Use a table knife or some such to pry off large end of fob cover. Not hard. Some Tesla stores or service centers will replace them while you watch, for free, but I have found that doing it one's self is the best option. I'd hate to have my fob go dead when I could just replace the battery in a minute.
     
  5. rjdoc74

    rjdoc74 Member

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    Thanks. Its actually CR2354 for MX.
     
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  6. MikeBur

    MikeBur ManualPilot

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    This is a reasonably common occurrence and not often due to updates. Root causing it, there is a reasonable correlation between rfid tags in same pocket/purse as the key fob. They do break occasionally, though very few relatively reported as broken.

    More here: FOB Question - does it work from your pocket? and FOB dead after 1 week. Where is the RFID unlock actually located?

    Also, the battery for Model S is a CR2032, and as mentioned CR2354 for X - good to have some spares anyway, though try other fob first.
     
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  7. rjdoc74

    rjdoc74 Member

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    Good info. Thank you.
     
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  8. Solarman004

    Solarman004 Member

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    Interference from a cell phone, if in the same pocket as your FOB, can also cause this.
     
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  9. Btrflyl8e

    Btrflyl8e Supporting Member

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    ^ this

    This happens to me fairly frequently, as I sometimes accidentally put my fob in the inside pocket of my purse, next to the outside pocket where I keep my phone.
     

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