Have a used 2013 Leaf with the 3G TCU. Reading through this thread, I think I'm going to try and pop the negative plug and reset the battery, with my brother's help. He's the car guy. First though I'll see if he can check the voltage. In my case, the car still sends data to Nissan as far as I can tell. I can still see my driving data through the app and on the owner's portal. Also, I can still send google maps to my car just fine. I'd like to ask those who have had problems with the app, was your TCU not working at all or just partially? I still have some function, but can't use the app to start charging or check SOC or start the climate option. I just now deleted the carwings data and reset the user ID and password so I'll know in a little while if that worked.
Order accepted: 1/25/2011
2013 SL, March
Now 2013 SV Blue LEAF with QC and Premium package, 1/25/17.