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Thanks. That sounds like a lot of effort on your part. A few follow up questions.
1. Did you have the standalone acct?
2. Did AT&T increase the contract price once you were reset?
3. Were the TCU updates necessary for reactivating the AT&T service?

It really sounds like AT&T wanted to ditch the older contracts, and weren't too concerned about the standalone myVehicle accounts. I'm not too concerned if the car uses AT&T or any other carrier for the data, but would like to understand how to reset the service.
Here is what I know ...

1) Yes I do ...
2) No it is the same price as before right now ...
3) Yes the TCU updates were needed for the 4G service ...

I have been happy with the connected car from AT&T ... right now with them I am getting between 25mb to 115mb a sec ... right now ...

Tony C.
 

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2019 FE Photon Red
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Here is what I know ...

1) Yes I do ...
2) No it is the same price as before right now ...
3) Yes the TCU updates were needed for the 4G service ...

I have been happy with the connected car from AT&T ... right now with them I am getting between 25mb to 115mb a sec ... right now ...

Tony C.
Thanks. I have an appointment scheduled for next Monday. I'll post what happens.
 

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UPDATE: My AT&T acct stopped working at the end of Feb. AT&T said it was a modem issue, JLR suggested it was an update of the TCU software that was needed.
Fast fwd to this week. Dropped car off at Allentown dealer on Monday, they called me Tuesday to tell me that JLR was hestitant to do the update. Wednesday they called to say all fixed - SIM was the answer. Got the car back today, called AT&T this morning to register the new SIM, within an hour 4G appears on the dash, weather and new updates coming thru.
Have to say I'm very impressed with JLR Allentown - very good service, and the car was spotless when I got it back (unlike when I dropped it off).

So, just a SIM card issue. Didn't realise SIMs were network (3G, 4G etc) specific.
 

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19 I-pace HSE Polaris/Fuji white with most options and a lot of accessories
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WattCat's info from the Jaguar servers will not be accurate. That will only show what it was built with. You have to check the car.
Mine was updated from 14.2 to 18.2 by a dealer and WattCat info did not change.
Mine was updated from 18.2 to 19.2 by SOTA and WattCat info did not change.
 

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2019 FE Photon Red
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WattCat's info from the Jaguar servers will not be accurate. That will only show what it was built with. You have to check the car.
Mine was updated from 14.2 to 18.2 by a dealer and WattCat info did not change.
Mine was updated from 18.2 to 19.2 by SOTA and WattCat info did not change.
Car still reports 17.2.
Gadget Font Audio equipment Personal luxury car Technology
 

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2019 EV400 First Edition with 20" Wheelset using All-Weather Tires
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Recently had TCU replaced along with 4G SIMM in my 2019 FE. This was due to system no longer being able to WiFi or SOTA with cellular data. With a new IMEI and new SIMM AT&T Car Connect will NOT activate the basic service initially supplied by Jaguar WITHOUT a data plan upgrade purchase. I see no reason to make such upgrade as my iPhone 13pro has a hot spot and I see no value in what is offered? I am diligently working with Jaguar Customer Relations as well of the dealer ENCORE representative to reinstate the basic data service with AT&T as calling the Car Connect support line does not work. They do NOT understand the feature contracted to Jaguar.

WiFi works but SIMM not currently connecting. Using that basic feature allowed me to see availability of software updates WITHOUT having to connect to WiFi and check for them. Anyone else have issues since I understand the in order to use 4G the SIMM must be replaced. This would knock off the basic service connect delivered with the vehicle. I notice that people seeing the service at 4G appear to upgraded their data plans.
 

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Glad you got it resolved. What AT&T package did you have?

You are correct that I needed a new SIM card. However, I had canceled my AT&T acct since I had to wait 2 months to get a dealership to look at the problem, but with the new SIM I got the exact deal I had previously, and had for 2yrs prior - $200/yr unlimited data.
For me it is worthwhile since I often run the work laptop through the car rather than the phone.
 

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Ugh ... trying to follow this. Now that 5G coverage has reached ubiquitous status in my area, I was considering dropping my AT&T connected car service. Will I need to go through a process to keep my remote app working? At this point, I'm not too concerned about OTA updates as I think those of us with TDP are probably stuck with what we have.
 

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19 I-pace HSE Polaris/Fuji white with most options and a lot of accessories
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The Incontrol app features (trips data, remote lock/unlock, etc.) are not tied to user AT&T (or other) service. It is a separate subscription. It also appears to not need 3G service since it still works in my 16 RR without any data plan as long as I renew subscription annually.

SOTA is not associated with AT&T (or other) subscription. It does not use user supplied SIM.

The problems reported above by Mr. Steinhorn for SOTA and call services (using the overhead buttons) is due to dealer not going through the process required for the internal SIM.

Additionally, did dealer try to use old user SIM (the one plugged into slot in center console) with new TCU? Bluntly, dealer did not follow proper procedures for TCU replacement.
 

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SOTA is not associated with AT&T (or other) subscription. It does not use user supplied SIM.
I think this isn't completely correct. My TCU is currently fubar, and doesn't support WiFi or Mobile Data. I can see trips, lock status, and milage in the InControl app (which definitely uses the eSIM), but SOTA and traffic data don't work anymore. I had a tech try to push the latest IMC update to my car, and it never arrived, and I've previously installed IMC updates via SOTA 3 or 4 times (all before the TCU went out to lunch last year).

I think SOTA updates work the same way as traffic data did, where it uses the cell connection of the user SIM, but it goes through a proxy that AT&T allows through regardless of subscription status so long as the SIM is one of the connected car SIMs. The WiFi hotspot data doesn't go through that proxy, and does require an active subscription. I tested the traffic data part of this early in car ownership. Once the 3 month mobile data trial expired, traffic data was still working, but the in-car WiFi hotspot no longer worked (trying to browse anything brought up an AT&T captive portal telling you to subscribe). When I removed the SIM traffic data also stopped working, and it started back up as soon as I put the SIM back in, even though I wasn't subscribed.[/QUOTE]
 

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19 I-pace HSE Polaris/Fuji white with most options and a lot of accessories
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Yes all that live data and WIFI hotspot goes through the user SIM so it stops if one does not provide a SIM with a valid account (does not have to be AT&T). This is well documented.

Data related to Incontrol subscription (completely separate from user supplied SIM subscription) goes through eSIM. Traffic data may be picked up from RDS signals (where available) instead of using live traffic data. Refer to owners manual or iGuide to understand the level of difference in the data.

SOTA cannot be dependent on a user supplied SIM since it may be required to support a recall. It will use WIFI connection if that is available on the assumption that WIFI is faster than the cellular service.

Early on my cat would not receive IMC SOTA although everything else worked. Dealer had to force feed it via Pathfinder. Service advisor said an antenna was replaced but no mention of that is in tech's write up of what was done other than going back and forth with Jaguar for a week and using Pathfinder to load software.
 

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Yes all that live data and WIFI hotspot goes through the user SIM so it stops if one does not provide a SIM with a valid account (does not have to be AT&T). This is well documented.

Data related to Incontrol subscription (completely separate from user supplied SIM subscription) goes through eSIM. Traffic data may be picked up from RDS signals (where available) instead of using live traffic data. Refer to owners manual or iGuide to understand the level of difference in the data.

SOTA cannot be dependent on a user supplied SIM since it may be required to support a recall. It will use WIFI connection if that is available on the assumption that WIFI is faster than the cellular service.

Early on my cat would not receive IMC SOTA although everything else worked. Dealer had to force feed it via Pathfinder. Service advisor said an antenna was replaced but no mention of that is in tech's write up of what was done other than going back and forth with Jaguar for a week and using Pathfinder to load software.
I definitely don’t dispute that SOTA should use eSIM, but it really doesn’t seem to.

The reason I don’t believe it is using the eSIM is because, InControl data is working w/o an issue on my car, it is only the WiFi & user SIM that are dead on my car, and prior to when WiFi & user SIM died I successfully received IMC SOTA updates in 2019, 2020, and early 2021 (S21A). Soon after S21A installed (and thus CarPlay navigation audio stopped worked), the user SIM and WiFi stopped working and giving an error every few minutes saying it was unavailable). Since then, no SOTA for the IMC. After S21B had been available for a while, I finally called Jag Honolulu and they tried pushing it to my car. Unfortunately the car doesn’t see the update being available.
 

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19 I-pace HSE Polaris/Fuji white with most options and a lot of accessories
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As I stated before, I had a case where only SOTA didn't work. Incontrol data worked. All other functions worked. Only SOTA did not and required dealer intervention.

Your TCU or IMC has more issues than mine had as you can't get WIFI to work. CarPlay navigation failure turned out to be bug in 21A release and required 21B to fix it. It needs a visit to the vet to fix.
 

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The required vet visit is why I’m looking at what’s next. Shipping kitty to another island for service is just a bit too much.

In your case, had SOTA ever worked prior? I don’t remember reading about a case where SOTA was working and then stopped requiring a hardware fix.
 

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No it never worked but this was back in '19 when they started pushing out SOTA. They kept bugging with emails to update via SOTA, but it wouldn't do it.

There have been TCU failures, IMC failures and software corruption during updates that required hardware replacement to fix because it couldn't be reset. They are very rare occurrences but they have happened. Any chance that TCU 20.2 was pushed to your car?
 

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There have been TCU failures, IMC failures and software corruption during updates that required hardware replacement to fix because it couldn't be reset. They are very rare occurrences but they have happened. Any chance that TCU 20.2 was pushed to your car?
Not that I’m aware of, but maybe? Next time I’m in the car I’ll have to see if it shows a version#.
 
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