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won't be LTE receiving that init sms
There seems to be an opinion from somewhere that the wake up happens via SMS. I don't know where that comes from as far as i am aware it happens via the wake_up api callNot sure what's meant by this. There's no usable LTE signal here, never has been since long before I got the car, so the car relies on being connected by WiFi when parked here. This was something I checked out before I ordered it, as I wanted to be sure that the car would still have normal functionality with only a WiFi connection, and was assured that it would. As both LTE and WiFi use a similar IP based packet system, and as the power overhead in maintaining a WiFi connection is significantly lower than that of maintaining an LTE connection, I suspect that the car does much as many mobile devices do, and uses WiFi whenever it's available.
There seems to be an opinion from somewhere that the wake up happens via SMS. I don't know where that comes from as far as i am aware it happens via the wake_up api call
I was wondering that. I'm Shropshire and have this issue. Going down south tommorrow will try it there.I was up on the North Norfolk coast yesterday. Had no issues waking the car from a mile away.
I’ve never used 3rd party apps, moved from iOS 13 to iOS 14, software from 32.5 to 36.10 and on Friday to 36.11
At home, car has it’s own WiFi AP in the garage
Strongest mobile signal at home is O2 -2 bars and 3G so not brilliant. Car’s LTE signal at home is not brilliant either. Sometimes goes offline.
From my perspective, it doesn’t seem software or iOS related.
Could it be a location issue?
Potential Workaround for those needing the car to be awake to start third party triggered charging - ie Ohme, ev.energy etc.
Leaving the car with Sentry Mode on seems to be a temporary workaround to force the car to be awake waiting for an instruction to charge until the problem is resolved by Tesla.
There seems to be an opinion from somewhere that the wake up happens via SMS. I don't know where that comes from as far as i am aware it happens via the wake_up api call
I don't know what's more costly, not being able to charge or having sentry on to allow the car to charge.The car never goes to sleep if on sentry so yes that works but at a cost
I'm on the South Coast (Eastbourne) and we have the same problem here. Service request raised.I was wondering that. I'm Shropshire and have this issue. Going down south tommorrow will try it there.
api call from app is sent to tesla servers
server responds with json reply to app
server concurrently sends sms wake call to car
app starts loop checking updated wake state from server
car starts wake process
car wifi + lte connections are enabled and obtain ip (metric wifi first)
car vpn tunnel raised and sends updated wake state json to server (vpn)
server updates wake state locally only
app checking server on loop eventually sees wake state change
app dialogue changes - car shows connected
sms over 2g because reliable / wide coverage / low power in sleep / industry standard for this process - car cellular has multiple radios - 2g status abstracted from user
sms also preferred as wake call sms will be held at carrier network inbox if failed delivery and retried whereas packets over tcpip will be dropped / lost
api call from app is sent to tesla servers
server responds with json reply to app
server concurrently sends sms wake call to car
app starts loop checking updated wake state from server
car starts wake process
car wifi + lte connections are enabled and obtain ip (metric wifi first)
car vpn tunnel raised and sends updated wake state json to server (vpn)
server updates wake state locally only
app checking server on loop eventually sees wake state change
app dialogue changes - car shows connected
sms over 2g because reliable / wide coverage / low power in sleep / industry standard for this process - car cellular has multiple radios - 2g status abstracted from user
sms also preferred as wake call sms will be held at carrier network inbox if failed delivery and retried whereas packets over tcpip will be dropped / lost
How does that work here, then?
As already mentioned, before I bought the car I researched into whether or not it would have full functionality in an area without any mobile signal coverage. I was assured that the car would work normally, as long as there was a WiFi signal. This has been the case for the 10 months I've owned the car. Despite not having any LTE signal, the car has woken up from the app, and functioned normally, until last Wednesday night, when it seems that it stopped waking up on request.
As the car has never had an LTE signal here, how was it able to wake up in the past from the app, if LTE is needed for it to wake up?
Answering my own question, it seems that the car disconnects from WiFi when it's sleeping (as of now - maybe this is new behaviour). Lends credence to the theory that it uses SMS to wake the car.I've not checked my own router logs, but for anyone who has, is it the case that the car remains connected to WiFi whilst it's asleep?
roger.klurfeld_98151236 Posted December 2018
When the Model 3 goes to sleep it cuts its WiFi connection. Tesla customer support told me its a feature to cut down on phantom drain. Tesla wakes the car up by pinging it over LTE. Once it wakes up it will switch to WiFi if available. So if all you are doing is connecting to push a few bits from the app to the car, it doesn't matter if you leave the car connected to your WiFi home router. My car routinely doesn't wake up in the morning. Very annoying if it is cold outside.
not lte, using gsm, car is getting a gsm signal as can roam networks, the connection status is hidden on ui
edit: cars gain on gsm will out perform your means of testing