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Re: Mobile operators to shut down 3G networks in 2022

Posted: Mon Apr 19, 2021 9:10 am
by Goodbar
Did a little poking around and it appears that Subaru went to 4G LTE in ~2016 with Sirius XM Connected Vehicle Services and AT&T. Pretty disappointing that Nissan switched to 3G when other automakers were installing LTE. Especially because LTE was well-established by then and 3G was on the wane.

https://media.subaru.com/pressrelease/7 ... vices-help

My car will be disconnected before it's 5 years old. I'm not hugely reliant on telematics, though it was one of the reasons we bought an SV over the S. I get that they can't support new cell technologies indefinitely, but leaving us with no upgrade path after a few years is lousy. I'd be willing to pay a few hundred bucks for an upgrade.

Re: Mobile operators to shut down 3G networks in 2022

Posted: Mon Apr 19, 2021 7:28 pm
by G3NG4R
knightmb wrote:
Mon Apr 19, 2021 6:14 am
I had some time to kill this morning, so I did two test on mine...
This is awesome! Thank you for taking the time to do this testing, and I'm envious of the equipment you have. :D

Re: Mobile operators to shut down 3G networks in 2022

Posted: Mon Apr 19, 2021 8:41 pm
by alozzy
rpiotro wrote:
Mon Apr 19, 2021 6:47 am
knightmb wrote:
Mon Apr 19, 2021 6:14 am
I had some time to kill this morning, so I did two test on mine...
Thanks. I just bought a new 2020 and was wondering about that. I have been unsuccessful in determining what radio I have. I still haven't found anything 100% definitive. The Connect manual suggests 4G and your experiment reinforces that notion but no-one can say with absolute certainty.
Can't say I agree, I think knightmb's test is about as definitive an answer as you'll get, besides Nissan themselves confirming it.

It's a little fuzzy, but this photo of the TCU from a 2018 Nissan Leaf shows 4G at the bottom of the label, next to "Model Name"

Image

So, that would seem to confirm that any 2018 or newer LEAF with a telematics system is 4G compatible

Re: Mobile operators to shut down 3G networks in 2022

Posted: Tue Apr 20, 2021 5:57 am
by knightmb
alozzy wrote:
Mon Apr 19, 2021 8:41 pm
So, that would seem to confirm that any 2018 or newer LEAF with a telematics system is 4G compatible
Using the photo and the FCC-ID, I was about to look it up in the FCC database.

V6V 3A4 N7NAR7552 Original Equipment 06/15/2015 824 849
V6V 3A4 N7NAR7552 Original Equipment 06/15/2015 1710 1755
V6V 3A4 N7NAR7552 Original Equipment 06/15/2015 1850 1910
V6V 3A4 N7NAR7552 Original Equipment 06/15/2015 2500 2570

824 MHz to 849 MHz - 3G Service
1710 MHz to 1755 MHz - 4G Service
1850 MHz to 1910 MHz - 3G Service
2500 MHz to 2570 MHz - 4G Service

These units support both 3G and 4G service. I actually never checked it for the 3G frequency since I was only interested in the 4G working service, so it would appear this radio can support both, neat!

Re: Mobile operators to shut down 3G networks in 2022

Posted: Tue Apr 20, 2021 6:40 am
by Stanton
I just can't believe Nissan was installing 3G modem upgrades (instead of 4G) for Gen1 Leafs while they were selling 4G modems in the Gen2 :evil: I'm starting to get worried that we can't get any info on (additional) modem upgrades for the Gen1.

Re: Mobile operators to shut down 3G networks in 2022

Posted: Tue Apr 20, 2021 6:41 am
by Goodbar
Interesting stuff! It appears that a few part numbers were used from late 2017 – mid 2018 for the Gen2 cars. Unless they all have 4G capability, it may not be possible to make a blanket statement about MY18. It also looks like the 62 kWh Plus cars got a different part from the base 40 kWh car, and all of the earlier TCUs were superseded to a newer part number.

Image

From:
https://www.nissanpartsdeal.com/parts-l ... ?pnc=28275

Re: Mobile operators to shut down 3G networks in 2022

Posted: Tue Apr 20, 2021 6:52 am
by knightmb
It will take a while, I can probably find the FCC ID for those also and relay back what they support via the FCC database. Unless someone has a nice picture of the FCC ID from all of those handy to post here.... ;)

Re: Mobile operators to shut down 3G networks in 2022

Posted: Tue Apr 20, 2021 9:54 am
by Goodbar
It was pretty quick to do a Google image search for the part numbers. They all say 4G on the label, whereas the PN for my 2017 says 3G. So there might be a clean break between Gen1 and Gen2. Anyone know if there were significant infotainment changes between MY18 and 19?

I didn't look up the Plus PN because that was introduced later and didn't duplicate the photo above from @alozzy.

28275-6FL0E
Image

28275-6FL2B
Image

Re: Mobile operators to shut down 3G networks in 2022

Posted: Tue Apr 20, 2021 10:45 am
by knightmb
Looks like the same FCC ID is being used, so they would all use the same frequency allocation, thus should all be 4G compatible. Going by the pictures...

Re: Mobile operators to shut down 3G networks in 2022

Posted: Fri May 07, 2021 6:54 am
by rpiotro
alozzy wrote:
Mon Apr 19, 2021 8:41 pm
rpiotro wrote:
Mon Apr 19, 2021 6:47 am
knightmb wrote:
Mon Apr 19, 2021 6:14 am
I had some time to kill this morning, so I did two test on mine...
Thanks. I just bought a new 2020 and was wondering about that. I have been unsuccessful in determining what radio I have. I still haven't found anything 100% definitive. The Connect manual suggests 4G and your experiment reinforces that notion but no-one can say with absolute certainty.
Can't say I agree, I think knightmb's test is about as definitive an answer as you'll get, besides Nissan themselves confirming it.

It's a little fuzzy, but this photo of the TCU from a 2018 Nissan Leaf shows 4G at the bottom of the label, next to "Model Name"

Image

So, that would seem to confirm that any 2018 or newer LEAF with a telematics system is 4G compatible
Thanks for showing that. You have met my criteria of "definitive". :D