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SOS: My car can not detect the key

Discussion in 'Model S' started by Shelly, May 23, 2016.

  1. Shelly

    Shelly Member

    Joined:
    Jul 1, 2015
    Messages:
    80
    Location:
    China
    SOS: My car can not detect the key

    About two years past when i get my 85, It's always in good condition until today. The car can not detect the key, Is there something wrong with the key? Or is it ok just to replace the battery? Can someone tell me which battery is ok?
     

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  2. 0exhausts

    0exhausts Member

    Joined:
    May 3, 2016
    Messages:
    14
    Location:
    Danville, CA
    My car can't detect key when the key is next to my phone
     
  3. bkp_duke

    bkp_duke Member

    Joined:
    May 15, 2016
    Messages:
    395
    Location:
    San Diego, CA
    You want the following battery for the FOB:

    CR2032

    I keep a few spares on hand just for an event like this.
     
  4. David29

    David29 Member

    Joined:
    Aug 1, 2015
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    Location:
    DEDHAM, MA
    If the batteries are original, odds are that is the issue.
    Other possibilities include cellphone interference (mentioned above), or interference from some other source of radio frequencies nearby. If you are in a place that you visit frequently, or at home, and if the key normally has worked at that location with no issues, I would focus on the battery.
    Note that the owner's manual has two work-arounds for poor reception: One is to place the key near the internal antenna, by putting it into the center console cup holder, or right below the 12-volt power outlet.
    If you are outside the car and cannot unlock it, the manual suggests this procedure:
    "
    To unlock Model S (and disable the security
    alarm), first position the key near the base of
    the passenger side windshield wiper, as
    shown. Then press the front passenger door
    handle. If Model S doesn't unlock, try adjusting
    the position of the key. The key must be in the
    correct position."

    It is useful to know these techniques for future possible need, even if your present problem is just the need for a new battery!
    Good luck.
     
  5. PaulR

    PaulR Member

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    Feb 5, 2015
    Messages:
    112
    Location:
    Atlanta, GA
    All of the above is good advice....

    I have a BMW ICE and found that when I put the key for the BMW in the same pocket (or very close proximity) as the Tesla key, it interferes. Symptoms are, for example, irregular and erratic inability to unlock the doors, irregular charge port door opening when I go to charge. I had to keep the BMW key in the other pants pocket and move my iPhone holster to the other side away from the Tesla pocket.

    RFI (radio frequency interference) is everywhere....

    I once stopped to pay for parking at the exit of the parking lot, put the car in park so that I could find my wallet to pay, paid the fee and when I tried to put the car into "forward" it would not respond - until the cashier finished the transaction. Seems that the payment system hardware was interfering with my key and would not let the car go. It wasn't done on purpose, just RFI...
     
  6. Shelly

    Shelly Member

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    Location:
    China
    Thanks so much for your kind suggestion, It's really useful for me. All of the above are good advice.
     
  7. Shelly

    Shelly Member

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    Jul 1, 2015
    Messages:
    80
    Location:
    China
    good suggestion, no problem now.
     

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