TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker and becoming a Supporting Member. For more info: Support TMC

Is it "safe" to lock a keycard inside the car?

Discussion in 'Model 3' started by seafoodbuffet, Jul 12, 2018.

  1. seafoodbuffet

    seafoodbuffet New Member

    Joined:
    Aug 10, 2017
    Messages:
    2
    Location:
    Austin, TX
    Let me preface by saying I fully realize this isn't fully safe in that you've now made it possible for someone to have a key to your car and drive off with it.

    That said:
    If you lend someone your car with a keycard, would the following work to get your card (and your keycard) back?

    They drive somewhere and park the car, put the keycard inside the glovebox (or some other hidden place).
    I lock the car remotely using my phone app
    At some later time, I show up, unlock the car using my phone and drive off

    Would this work? Beyond the risk of someone breaking into the car and finding the keycard and thus being able to drive off, since the keycard requires proximity to activate, it's presence in the car shouldn't prevent remote locking or things of that sort, right?

    This is the equivalent of locking one set of keys in the car and arriving with another set to pick it up?
     
  2. Garrett0606

    Garrett0606 Member

    Joined:
    Oct 2, 2017
    Messages:
    33
    Location:
    Plantation,Florida
    I dont see why it wouldn’t work.
     
  3. gregd

    gregd Active Member

    Joined:
    Dec 31, 2014
    Messages:
    2,370
    Location:
    CM98
    One subtle nuance to consider is what you do after you unlock the car. Both of our cars (Tesla Roadster and Honda CRV) will re-lock the car a short time (30 seconds?) if a door hasn't been opened. I can see how this could work the same with the keycard, but if you stand there with your phone, what happens?
     
  4. miimura

    miimura Well-Known Member

    Joined:
    Aug 21, 2013
    Messages:
    5,222
    Location:
    Los Altos, CA
    Even if this behavior is present, I don't think it's a problem because the intended person is going to get in and either retrieve the key card or drive the car as soon as it's unlocked.
     
  5. Big Dog

    Big Dog Active Member

    Joined:
    Mar 7, 2016
    Messages:
    1,345
    Location:
    Irvine, CA
    Except when it doesn't. (The phone is not 100% foolproof.)
     
  6. gjunky

    gjunky Trifecta: Solar and both cars are EVs

    Joined:
    Mar 26, 2012
    Messages:
    1,240
    Location:
    Scottsdale, AZ
    One more addition: Store the key card in the glove box before you leave and activate valet mode (does this work yet in a model 3). Should keep the glove box locked.
     
  7. T3forMe

    T3forMe Member

    Joined:
    Jul 12, 2018
    Messages:
    30
    Location:
    Los Angeles
    One thing you should never do is leave your smart phone in the charging area and walk away from your car. Not only will they be able to steal the car, but they will also get your phone as a bonus.
     
    • Like x 2
  8. gregd

    gregd Active Member

    Joined:
    Dec 31, 2014
    Messages:
    2,370
    Location:
    CM98
    So, first off, I agree. Bad idea, especially these days.

    BUT, what we were told when we picked up the car was that if you lock the car with the keycard, the phone's presence (with all radios on) inside the car will not prevent the car from locking, nor trigger the car to unlock spontaneously in the future.

    True?

    My wife was always leaving her purse in the car (trunk or other hidden place) when we went out, given that I had pockets for keys and she did not. Invariably her phone was in there, too.

    Hmmm, additional thought... If the keycard were in her purse, and the purse were in the center console storage area, would it be close enough to the "back of the cup holders" hotspot to trigger an unlock?
     
  9. ewoodrick

    ewoodrick Well-Known Member

    Joined:
    Apr 13, 2018
    Messages:
    5,274
    Location:
    Buford, GA
    Sure, but store it anywhere except the center console. Under the mat should work fine. You probably don't want to use glovebox, as you may actually turn valet on to keep the car from being abused.
     
  10. AltLogic

    AltLogic Member

    Joined:
    May 14, 2018
    Messages:
    230
    Location:
    SoCal
    You could have the person put the card in the glovebox, open all doors necessary for everyone to exit, push the lock icon on the screen and then fully close all doors. I tried this with mine today. The screen goes blank but the mirrors stay out.
     
    • Like x 1
  11. dualcyclone

    dualcyclone New Member

    Joined:
    Aug 11, 2019
    Messages:
    3
    Location:
    London, UK
    Glad somebody posted this, I want to keep a keycard in the car for when I take my car to get cleaned, so they can get in and out of the car as necessary.
     
  12. sceptic

    sceptic Member

    Joined:
    May 5, 2019
    Messages:
    303
    Location:
    california
    #12 sceptic, Aug 18, 2019
    Last edited: Aug 18, 2019
    So as long as I can unlock it with my phone (or extra key card) once it has been locked (how would the car know if an extra key card is inside the car if not in the "start" area?) there shouldn't be any reason this wouldn't work.
    I think I inadvertently did this once when I forgot a key card in the car - but I won't swear to it.
    Does the car locking depend on a "key" being a certain distance or time away from the car or if I leave my car with my phone but turn off bluetooth will it not lock automaticaly (think I'll go test this)

    So I just left my car after turning the phone bluetooth off while in the car. The car still self locked - how does it know to do this?
     
  13. Silicon Desert

    Silicon Desert Active Member

    Joined:
    Oct 1, 2018
    Messages:
    2,406
    Location:
    Sparks Nevada / Gigafactory
    Sure it is ok. Just send me a text to tell me where is the car, how far away you are, and put it on the dash :D I'll return it after my trip to Mexico.

    Of course it is a joke. I like AltLogic's answer. I did that once and worked fine.
     
  14. srredbeard

    srredbeard Blue MS 75D and Black M3

    Joined:
    Mar 19, 2018
    Messages:
    106
    Location:
    Milton, WA
    I can't even count how many times my wife has done that.
     
  15. groovidad

    groovidad Living the Dream!

    Joined:
    Oct 19, 2018
    Messages:
    615
    Location:
    Ewa Beach, HI
    As an added measure of security when doing so, activate the 4-digit security pin.
     

Share This Page

  • About Us

    Formed in 2006, Tesla Motors Club (TMC) was the first independent online Tesla community. Today it remains the largest and most dynamic community of Tesla enthusiasts. Learn more.
  • Do you value your experience at TMC? Consider becoming a Supporting Member of Tesla Motors Club. As a thank you for your contribution, you'll get nearly no ads in the Community and Groups sections. Additional perks are available depending on the level of contribution. Please visit the Account Upgrades page for more details.


    SUPPORT TMC