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JimSouCal
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Re: Disabling CarWings/2G cellular modem now that it's useless

Fri Dec 30, 2016 4:16 pm

Anyone have any idea where the modem is located and what it looks like. Or a service manual reference?

baustin wrote:
brycenesbitt wrote:Now that the cellular radio in the leaf is useless, is there a way to disable it?
Note that a radio constantly hunting for a non-existent 2G signal will use more battery power, and more radio transactions, than one that's properly registered. Can we kill the thing?


The power use will likely be minimal. You could locate the modem under the dash, and unplug the connecting cable. The software that tells the modem to try and access the Nissan computers is embedded in the NAV system, so you're stuck with that indefinitely. Depending on how the software was coded, you may or may not get a regular error message with the modem disconnected.

cwerdna
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Re: Disabling CarWings/2G cellular modem now that it's useless

Fri Dec 30, 2016 6:08 pm

JimSouCal wrote:Anyone have any idea where the modem is located and what it looks like. Or a service manual reference?

I think I saw the unit when I had the glove boxed removed to change the cabin air filter.

I saw one black box closer to the right side that had a Continental logo and had an IMEI on it. https://en.wikipedia.org/wiki/Internati ... t_Identity makes sense since AT&T uses GSM. It did look like viewtopic.php?p=148255#p148255 with the multiple covers. I don't remember if mine had the white dot for the cover he labeled SIM (for Subscriber Identity Module).

'13 blue Leaf SV w/premium package (owned)
'13 blue Leaf SV w/QC + LED & premium packages (lease over, car returned)
'06 Prius

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JimSouCal
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Re: Disabling CarWings/2G cellular modem now that it's useless

Fri Dec 30, 2016 10:19 pm

Anyone going to lead (risking the bleed) and simply unplug? I lack the boldness, I'm more of a follower... :)

cwerdna wrote:
JimSouCal wrote:Anyone have any idea where the modem is located and what it looks like. Or a service manual reference?

I think I saw the unit when I had the glove boxed removed to change the cabin air filter.

I saw one black box closer to the right side that had a Continental logo and had an IMEI on it. https://en.wikipedia.org/wiki/Internati ... t_Identity makes sense since AT&T uses GSM. It did look like http://www.mynissanleaf.com/viewtopic.p ... 55#p148255 with the multiple covers. I don't remember if mine had the white dot for the cover he labeled SIM (for Subscriber Identity Module).

sandeen
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Re: Disabling CarWings/2G cellular modem now that it's useless

Sat Sep 23, 2017 10:21 am

When I spoke with Nissan yesterday, they told me there was an open service campaign (free) to disable the radio 2G units - for security I'd imagine.
2012 SL from TX, (mfg 8/12), used, dropped to 8 bars at 43.50 Ahr, 40,601 miles. my daily stats =/= my collected data on 4-bar losers

Turbo3
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Re: Disabling CarWings/2G cellular modem now that it's useless

Sat Sep 23, 2017 2:35 pm

sandeen wrote:When I spoke with Nissan yesterday, they told me there was an open service campaign (free) to disable the radio 2G units - for security I'd imagine.

When I asked Nissan about any recalls for my 2011 Japan built Leaf they called back and said the only open recall on my VIN was to disable the TCU unit for security reasons. This was two days ago.

I know there is a setting in the TCU to turn if off as some time in the past mine got disabled (probably due to my scanning the CAN bus looking for things to control) and I had to re-enable it. At the time I did not thing it worth putting the enable/disable feature in LeafSpy Pro.
Last edited by Turbo3 on Sat Sep 23, 2017 2:39 pm, edited 1 time in total.

sandeen
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Re: Disabling CarWings/2G cellular modem now that it's useless

Sat Sep 23, 2017 2:37 pm

Yep, though I had to extract the "security reasons" reason from them. Wonder if there's a CVE filed ;)
2012 SL from TX, (mfg 8/12), used, dropped to 8 bars at 43.50 Ahr, 40,601 miles. my daily stats =/= my collected data on 4-bar losers

lkkms2
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Re: Disabling CarWings/2G cellular modem now that it's useless

Sun Sep 24, 2017 10:30 pm

Earlier this year I was selling my 2011 SL Leaf to friend who was not interested in upgrading the telematics. I called Nissan Leaf help line to ask how to disconnect with the idea it might help reduce the load/drain on the 12 volt battery. They didn't have a good answer except to check with the dealer. Dealer did not have a good response either.

Interesting to now hear there is a technical bulletin (open service campaign?) on this.

Please let us know how this goes if anyone has it done at a dealer and what the bulletin number is.
2011 Leaf SL purchased 6-22-2011, sold 1-18-2017 with new battery.
2017 Leaf SV with Premium Package purchased 12-30-2016

sandeen
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Re: Disabling CarWings/2G cellular modem now that it's useless

Mon Sep 25, 2017 9:41 am

Nissan EV chat told me it was P7332

Haven't been able to find any details online.
Edit: oh, here we go:
Subject: CP 2011-2015 LEAF; 2G Telematics Hardware Deactivation - Service Campaign
Summary of NTB17077:
INTRODUCTION Nissan is conducting a Voluntary Service Campaign (in the U.S. ONLY) on certain specific 2011-2015 LEAF vehicles equipped with 2G Telematics Hardware to disable the 2G Telematics Control Unit (TCU). The 2G cellular service is no longer active in the United States and the subject TCUs are no longer connected to telematics services (Nissan Connect EVTM) and no longer perform any function in the affected vehicles. This campaign is being performed out of abundance of caution to help prevent potential cybersecurity issues.

  • Applied vehicles equipped with the 2G Telematics Control Unit (TCU) that enter the service department for any reason should have the subject TCU deactivated. This campaign will be performed at no charge to the customer for parts or labor.
  • For customers interested in the TCU update as opposed to deactivation, please refer to NTB17-015.
IDENTIFICATION NUMBER Nissan has assigned identification number P7332 to this campaign. This number must appear on all communications and documentation of any nature dealing with this campaign. Please see this bulletin for further details.
2012 SL from TX, (mfg 8/12), used, dropped to 8 bars at 43.50 Ahr, 40,601 miles. my daily stats =/= my collected data on 4-bar losers

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JimSouCal
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Re: Disabling CarWings/2G cellular modem now that it's useless

Mon Sep 25, 2017 1:05 pm

Not so much worth the bother? But if it gets rid of the nag notice at every startup, might be worth a dealer trip... Anyone get the 2G disabled via the dealer and can report the nag goes or stays?

Amped
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Re: Disabling CarWings/2G cellular modem now that it's useless

Mon Sep 25, 2017 5:41 pm

JimSouCal wrote:Not so much worth the bother? But if it gets rid of the nag notice at every startup, might be worth a dealer trip... Anyone get the 2G disabled via the dealer and can report the nag goes or stays?



Got mine disabled today and I was disappointed that the nag was still there.
2012 SL. Clippercreek CS40-SG2.

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