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Powerwall started broadcasting SSID

Powerwall started broadcasting SSID

My Powerwall2 started broadcasting a WiFi SSID last week.

SSID=TEG-977. Connecting via a device prompts for a password.

(It doesn't need to as it is hard wired to my home network).

I am concerned that this might open my home network up to hackers and want to turn it off.

How do I do this?

Thanks.

Scott

Daniel | 17 February, 2018

I have the same setup also and want to turn off the TEG wifi

sashton | 18 February, 2018

Is the WiFi with the TEG SSID actually bridged to your home network? I thought it was only there to aid with the initial setup and a get out of jail if the other interfaces get screwed.

kirk_nason | 18 February, 2018

Your password is your Powerwall serial number (which includes letters and numbers), slim chance someone will be able to guess it.

kirk_nason | 18 February, 2018

From watching the techs setup my Powerwall, I agree with sashton, this lets you connect to the Powerwall for setup and diagnostics locally, but any real communication between PW and Tesla is via your WiFi or ethernet

Earl and Nagin ... | 25 February, 2018

An SSID is great news! I hope Tesla have set up a way to talk directly to the PW via WiFi.
The idea of a backup system that is dependent on the internet/cloud is crazy. If we don't have electricity for an extended period of time, we won't likely have much internet either. Direct connect will allow us to monitor and control our solar + powerwall electricity, even if we only connect in an outage.

cwied | 26 February, 2018

The WiFi with the TEG SSID does appear to have Internet connectivity for me. I suspect it either is NATed to the ethernet network if it is connected or it uses the cellular network for Internet. It isdefinitely not bridged as it seems to use the 192.168.91.0/24 subnet no matter what your network setup is.

jsoltero | 18 July, 2018

has anyone figured out how to turn off the WiFi network on these things? The SSID broadcast is causing interference with my home wifi network.

sylviaw79 | 18 July, 2018

I'm surprised at cwied's finding that the TEG SSID has internet connectivity. My own experiments indicated that it didn't. If there are cases where it does then it probably also has connectivity to the LAN, and that's a serious security hole that should be reported to Tesla, and, if not fixed, to CERT.

The fact that it's not bridged is no guarantee that it's not forwarding traffic to the LAN.

cwied | 19 July, 2018

Note the date on my post. That was probably on firmware version 1.12 or something like that. It may very well be different after they redid their network selection code. I can redo the test on 1.20.0 to see if it still works that way.

wmckemie | 15 June, 2019

This question has gone unanswered. How does one turn off the TEG access point? Or, at least have it stop announcing itself?

Every wifi device in my area, including Tesla cars, want to fruitlessly connect.

holstein13 | 26 April, 2020

Does anyone have an answer to this question? How do we turn off the Powerwall's access point? It is needlessly broadcasting over cluttered airwaves.

gregbrew | 26 April, 2020

There doesn't appear to be any way to shut it off.

I decided, that since it's broadcasting anyway, I might as well use it. I dug out an old Galaxy Note 3 smart phone and connected it to the TEG's WAP. The Note 3 is set up to never shut off the display. You can do this with any Android or Apple smartphone or tablet.

Now I have an always-on display that shows power flows for the house, grid, batteries and PV. I LOVE this!

bp | 26 April, 2020

It seems to always be on, so there's always a way to communicate with the Gateway, even if a wired, WiFi or cellular connection isn't available.

ir | 26 April, 2020

I think the Neurio energy meters use that WiFi access point.

gregbrew | 27 April, 2020

ir, do you have an reliable information source to verify this?

jeff | 29 April, 2020

The TEG wifi you detect is part of the Powerwall system. It is actually the gateway that is broadcasting this signal and it's a very low output....you have to be near the unit to connect. The purpose of this is to allow access to the gateway if there's no other connection available. If you aren't familiar with this, I'd suggest you leave it alone. It shouldn't be disabled or screwed with in any way. If you want to monitor your system, use the Tesla app. It's way more informative than getting into the gateway brain itself, and you can't cause much damage with the app.

jeff | 29 April, 2020

The TEG wifi is password protected, and very low range. People passing your house likely won't even detect it and if they do they have to know the user email address and password, so it's not that vulnerable as you might think and I don't believe it gives access to your local LAN, even if you have the connection wifi configured, not just the TEG wifi. The app gives you WAY more information. For example, the gateway interface via TEG won't tell you much about usage, pattern of solar production, history, all that good stuff that's in the app. Do yourselves a favor and use the app.

ir | 30 April, 2020

@gregbrew check out the install manual and particularly the videos about setting up the “meters” (not utility, but they mean the Neurio energy sensors).

https://www.tesla.com/support/energy/more/installers/installing-powerwall

Then if you read the specs on the Neurio device from neur.io and it says clearly the radio is WiFi.

https://www.neur.io/wp-content/uploads/2017/05/Neurio_Spec_Sheet-W1.pdf

The rest is common sense. The device needs to join a WiFi network. What if the TEG only has cellular available? Well, it would have to advertise a WiFi network for the Neurio to connect to.

jeff | 30 April, 2020

IR, you're mixing your apples and oranges. The TEG wifi is strictly for customer/installer access to configure the gateway. There is a whole other section of circuitry that uses either your local LAN via wifi or ethernet, or their private cell net with AT&T to communicate op measurements to Tesla, and that is what you see that in the App, using your regular internet, not over the TEG wifi. These are two separate things. The TEG does not report anything to Tesla. All that goes over whatever you configure the gateway to use (Wifi, ENet, Cell), using the TEG wifi to get into the gateway's user interface. After that, the TEG wifi is dormant and not used for anything unless there are problems with the system.

ir | 1 May, 2020

So which WiFi would the Neurio use?

The install instructions say it come paired with the TEG. You can literally remove it from the TEG and connect the CTs elsewhere. How does it otherwise communicate back to the TEG other than connecting to the TEG WiFi SSID?

Notice that when you relocate the Neurio, you have to mount its antenna outside of the electrical panel? Notice that when it comes initially mounted inside the TEG, you don’t?

gregbrew | 2 May, 2020

I also wouldn't worry about goofing something up by connecting to the TEG WiFi WAP directly. Without even logging into the web interface (but after logging into the WAP), Power Flow information is displayed. You log into the web interface using the "Customer" function, which only allows the customer to change some non-critical settings like the WiFi connection, should a different wireless router be installed in the residence. The other settings that could really goof up the system are protected behind an "Installer" log-in, that the customer has no access to.