z0ner said:
Had some problems last night getting Carwings to respond to Leaf Link. Got a couple of texts: "Unable to update vehicle status at this time...", and didn't think anything of it.
I wake up this morning to find about seven status texts, separated by about an hour each. Most worked, some didn't. Thinking I could have triggered a timing loop, I terminated the app, then hard booted the phone. No effect. I'm still getting status texts each hour. All of them were successful updates, and of course all of them are taking a small hit to the vehicle's battery.
baronvonshush, please investigate my queue on your server, or otherwise let me know what I need to do. This is becoming annoying real fast.
Interesting. To be clear, the LEAF Link server only communicates with CARWINGS if you use the charge timer feature. As far as I can tell, I'm the only person who has used it (aside from adspguy who tried once but ran into an unrelated problem that should have been fixed). Certainly, I am the only one who has a pending charge timer on the system. Additionally, there are no "runaway" processes running or files leftover from old charge timers. So I don't think that's it.
Outside of the charge timer, all communication with CARWINGS is strictly between your phone and Nissan's servers. If the app isn't running, it can't be communicating, period. If you want to be 100% sure, try deleting LEAF Link from your phone and see if another text message comes in.
I do have a couple of ideas as to why this may be happening:
1. Have you ever used the GreenCharge app? I know that at one time, they were setup to request periodic status updates using their server (again, LEAF Link does not work this way). There was a thread here about how their first version requested status every 5 minutes :shock: before an update changed that default to something a bit more reasonable. If you have used their app, perhaps their server is responsible for these updates. I would check the settings in their app in that case.
2. In the midst of whatever issues CARWINGS may have had last night, perhaps your account settings with Nissan got reset to send text messages for status updates. LEAF Link doesn't touch this setting, but the official Nissan app does allow you to change it. You might try going in there and seeing how it's set (go to settings, notifications / vehicle status). It's possible that these status updates have been happening for longer than the last day (for example, if #1 is true) but you just started getting notified last night / today. On the other hand, if you've always had the setting to get status update texts, then that blows my theory... :?
Aside from that, I'm stumped. There's no date or time anywhere in the status check command - so it's not possible, for example, to request a status check to occur at a future time. And there's certainly no way to tell Nissan to automatically repeat it at some interval.
As for battery usage, I would strongly suspect that it's negligible, especially when talking about the 21 kWh traction battery. A quick back of the envelope calculation... The car's communication shouldn't use too much more power than a typical cell phone (right, Nissan? right??). A phone might have a 4 Wh battery, which very conservatively gives it at least 2 hours of constant cellular data usage (probably much more). If a typical status check takes 3 minutes of cellular data time (usually less), that's at least 40 status checks in 4 Wh of energy. Scale that up to roughly 20 kWh in the LEAF, and you're looking at 200,000 status updates to drain the battery once. Or 0.012% of the battery used per day of hourly status checks. Even if it uses 10 times (or 100 times) that much energy per status check, I wouldn't worry about it. Still negligible compared to actual driving.
Anyway I hope this helps. I'll keep thinking about what else could possibly cause this...
