Welcome to Tesla Motors Club
Discuss Tesla's Model S, Model 3, Model X, Model Y, Cybertruck, Roadster and More.
Register

Another Model 3 owner was able to unlock mine

japhule

Member
Jul 24, 2018
177
164
Dallas, TX
Look at your app and see if it says Phone Key Connected. If you can easily see the car, odd are that it was connected.

It's indeed an issue, but there hasn't seemed to be a huge backlash. It's a big problem for people who park on the streets and the car still sees the key.

I do wish that there was some ability to easily mitigate the issue.

You still need to be within a couple of feet from the car to unlock it. I can be connected to my car from 30 ft away with my phone showing "Phone Key: Connected" but someone cannot open the car if the phone is that far away. Before posting I reconfirmed this by leaving my phone on the 3rd floor (still showing as Connected) and tried to open the locked car in the garage to no avail.
 

cronosx

Member
Jun 1, 2016
248
141
Italy
Pretty sure you are missing like four 0s on that number :)
Irrelevant, the car COMMUNICATE via bluetooth, even if the address is the same, the phone need to reply with some sort of token to grant you access, so it doesn't matter, you simply can't have another phone unless he has the app opened WITH YOUR LOGIN!
 
  • Like
Reactions: Runt8

muleferg

Active Member
Dec 15, 2013
1,454
745
North Wilkesboro, NC
"floor (still showing as Connected) and tried to open the locked car in the garage to no avail."

I confirm. I just tried it.

IMG_7580.png
 
  • Informative
Reactions: Mrcarcrazy

brobinson

Member
May 23, 2018
621
639
Ohio
Phone key may show connected, but the car has a number of radios to determine how far away you are and allow unlock. This is very easy to test.

The most likely situations:

1) door was not fully closed when he exited
2) used key card to unlock car, didnt lock when walking away
3) trunk or frunk slightly ajar

The chances of keycards having the same 'code' is next to impossible.
 

SoManyM3s

Member
Apr 21, 2019
312
225
28262
Yeah so just because the car locked doesn't mean you're out of range. Even after the car locks, if you're close to the car and someone to tries to open the door, it's going to unlock and open. And it could be like other people said, maybe something wasn't completely closed and it never locked in the first place.
 

super20g

Member
Jun 28, 2018
911
599
United States
Kind of related, When I press the charge button on the cable, my other model 3's charge port opens as well... Is that just a bug? I have never figured out why both car's charge ports open.
 

Bill Foster

I'm going home!
Mar 6, 2019
901
749
Nashville
Kind of related, When I press the charge button on the cable, my other model 3's charge port opens as well... Is that just a bug? I have never figured out why both car's charge ports open.
That makes sense. It would be hard for the cars to differentiate which one should open
 

S4WRXTTCS

Well-Known Member
May 3, 2015
5,463
6,214
Snohomish, WA
Phone key may show connected, but the car has a number of radios to determine how far away you are and allow unlock. This is very easy to test.

The most likely situations:

1) door was not fully closed when he exited
2) used key card to unlock car, didnt lock when walking away
3) trunk or frunk slightly ajar

The chances of keycards having the same 'code' is next to impossible.

I wouldn't rule out a SW glitch as in this case it seems likely that the phone was still connected, but far away. So I think there is a possibility that something went wrong with the proximity detection code.

But, it would still be less likely than those 3 things.

I tend to be a bit OCD about my car locking, and I haven't had any case of my car not being locked except for #2. That used to happen a lot at Valets, but hasn't been happening recently. I think Tesla changed the coding of it, but I haven't had a chance to test it.
 

wupcwww

Member
Aug 28, 2018
29
27
Houston, TX
A similar thing happened to me when picking my son up from soccer practice in May of 2019. There was a Dad and his son getting out of my car when we walked up. He was surprised to find it wasn't his car as his was 4-6 spots down. We were both needing to go so we didn't do any additional testing as I now wish we had. I have walk away locking and the fields we were walking from were 100+ yards away. I do have pin to drive enabled since I am in IT and understand every layer of security helps. It was definitely strange and concerning.
 

Runt8

Active Member
May 19, 2017
1,986
2,373
Colorado
Irrelevant, the car COMMUNICATE via bluetooth, even if the address is the same, the phone need to reply with some sort of token to grant you access, so it doesn't matter, you simply can't have another phone unless he has the app opened WITH YOUR LOGIN!
This. To stop a phone from working as a key, all you have to do is delete the app, not remove the bluetooth connection. At least on iOS (all I have to test), deleting the app does not remove the bluetooth connections but the phone key stops working. So in the very unlikely event that "the wires got crossed" with the bluetooth connection (which didn't happen) the wrong phone still wouldn't work as a key.
 

mreynolds767

Member
Jul 11, 2019
728
392
Boston
Since it sounds like this other Model 3 owner works in your building ; I would wait by their car for them one day and talk to them, ask them to test someday and see if what happened can be replicated. I am sure as an owner of the identical car would be curious as well and might be someone good to know.
 

sg021

Member
Feb 23, 2015
128
84
Philadelphia, PA
A similar thing happened to me when picking my son up from soccer practice in May of 2019. There was a Dad and his son getting out of my car when we walked up. He was surprised to find it wasn't his car as his was 4-6 spots down. We were both needing to go so we didn't do any additional testing as I now wish we had. I have walk away locking and the fields we were walking from were 100+ yards away. I do have pin to drive enabled since I am in IT and understand every layer of security helps. It was definitely strange and concerning.

My first thought was to dismiss this as I know for a fact, as others said, that Connected status does not mean the door opens. You have to be really close to it.

However, you and OP have similar stories. Two separate owners parked close to each other, and both owners in range to be connected to their cars via phone keys. Can one of the owners walk up to either car and unlock it? It would be an interesting experiment. If it doesn't work then your door probably just didn't close correctly or something.
 

Lasairfion

Member
Jul 24, 2018
496
540
UK
You were on a phone call, so the phone was at your ear.

What if the magical head trick works for bluetooth as well as regular car keys?


 
  • Informative
Reactions: Dr. J

davewill

Active Member
Feb 5, 2014
1,825
1,975
San Diego, CA, US
The car does NOT rely on the Bluetooth ID for security. That would be ridiculously easy to clone. The car does a key exchange with the Tesla app installed on the phone. If you disable or force quit the Tesla app, then go to your car, you will be unable to unlock it until you relaunch the app.
 

Mrcarcrazy

Random thoughts.
May 22, 2019
862
881
South Padre Island, Tx
This happened to me on a couple occasions. It would be nice if the car would beep to let you know it was unable to lock.
I try to listen for the honk, but usually also look back at the car to make sure the mirrors are folded. Gotta agree though, it would be nice if the car would notify you (via the app would be simple I think).
 

jamnmon66

Member
Apr 10, 2018
572
406
Brighton, CO
I try to listen for the honk, but usually also look back at the car to make sure the mirrors are folded. Gotta agree though, it would be nice if the car would notify you (via the app would be simple I think).
You can see if it's locked in the app. But you have to open it. A nice feature would be to add an option for an app notification when the car locks.
 

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
Top