I have had issues with Nissan Connect EV as well. I bought 2018 Leaf SL back in early February. The app would not display any charge/mileage info and I could not control the car’s temperature remotely, even though I was all set up at the Owner’s Portal and all the info in my car’s touch screen was set properly. In short, the app never worked at all. After numerous calls to the helpline, and after two tickets were opened by helpline reps, I was told there was an issue with the TCU and that I had to take my car back to the dealership to get the TCU repaired. That is not what you want to hear when you have had your car for less than two weeks. I took it back to the dealership. They kept the car for three days. They completely replaced the TCU. When they returned the car to me, they told me that it was now up to the folks at the Nissan Connect EV helpline to “reset” the TCU. That, to my chagrin, did not fix the issue. So what did the helpline do? They opened another ticket.
The last I hear from the helpline is that the issue appears to be that Sirius XM, whose platform is used to operate the TCU, needed to be provided with a code/serial number. Nissan’s helpline informed me that they provided Sirius XM with that code/serial number yesterday. I am suppose to receive an update from the helpline by Monday, after they follow up with Sirius XM. I am not holding my breath. The Nissan Connect EV has been the only negative I have encountered with the 2018 Leaf.