Significant battery vampire drainage in storage

[eswimm]

The only way that would make sense is if the battery had so much thermal capacity that it took TWO days to cool down to its lowest possible temp.

I was making stuff up based on your numbers, it's obviously not taking 2 days to cool down. What you're describing isn't normal, so let us know what it is once you figure it out.

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[Jager]

The SOC displayed by the CT, on the truck's display and within the app, is not the actual SOC of the battery. It is the SOC that you have available at the present pack temperature.

So the first thing when discussing "phantom drain" is understanding the actual pack temp. If you haven't done that, it's just throwing darts.

 

[ireallyboughtoneofthese]

Such a condescending thread for no reason. His % loss per day is more than he expected. He is asking for help and answers. Mine loses 10% in 30-40 degree weather parked outside in 24 hours. I had same question but obviously won’t get any answers here. Posting for solidarity. My model 3 friend has way less loss but the pack is smaller and the car is lower to the ground (better insulation even outside than a truck high up, think hammock versus sleeping on the ground).

Many threads are supportive and helpful and that comes from people taking the time to put themselves in others shoes. The goal is to help and educate, not criticize and try to look smart. It comes across as rude.

 

[mongo]

I just went to drive it. 53% SOC (!!!!!) Temp outside is 49F. No indication of battery being cold. 10mi round trip, parked with 51%. I guess will check in 24 hours again and see what it does.

Sounds like it isn't sleeping
If you haven't already:
Press both scroll wheels until display resets
Wait for it to restart
Touch Controls > Safety > Power Off
Wait a few minutes without touching anything fir vehicle to shut down
Then press brake to wake it back up

 

[bosshog]

I also lose about 4-6 % per day . I still don’t understand this drain despite doing all the things mentioned in multiple threads that potentially drain the battery . There is just no definitive answer and concerning as I am reluctant to leave my CT at the airport for a 10 day period while on Holliday …

 

[AlmostHuman]

The latest update has increased the vampire drain again on my AWD. The three or four versions prior had resolved the drain issues making about the 1%-2% range for 24 hours. On 2024.45.25.5 it is crazy again, I’d guess 4-5% in 24 hours. Give them time, it will get better over time. Our 2022 X will sit asleep for 4-5 days and drop as little as 1% up to 3%

I do think one thing that makes our truck use more juice is our phones wake it up when we go in the garage. We keep the fobs for the X on the other side of the house allowing it to sleep for days.

I will post some vampire drain stats later, lazy right now.

Last couple firmware version on the truck. For sure 2024.39.15 and 2024.39.5 had less vampire drain.

Edit: Actually looking to be around 2-3% vampire drain per 24 hours right now. Haven’t driven the truck in three days and looked again.

 

[mbrockus]

I had my truck parked for 4 days with Sentry off and my loss was pretty minimal. I have the latest widely released software version. I wonder if when you toggled off Sentry mode there was a software snafu that didn't complete the process. When you turned it off were you in the truck or was it via the app?

 

[CyberGus]

Sleeping is the lowest power mode. It should show in the app:

Of course, it will wake if you interact with it, but should go back to sleep in minutes (I’ve not timed this).

 

[CyberGus]

I left my CT for 3 weeks. According to Tessie, it topped off the charge about once a week to add back around 3%.

 

[Crissa]

Such a condescending thread for no reason.

No, it's not.

Being told we can't know the answer but here are some ways it'll look like loss is not condescending.

-Crissa

 

[cybercricket]

The SOC displayed by the CT, on the truck's display and within the app, is not the actual SOC of the battery. It is the SOC that you have available at the present pack temperature.

So the first thing when discussing "phantom drain" is understanding the actual pack temp. If you haven't done that, it's just throwing darts.

I made the observation that the truck is losing let's say 10% of SoC per day just being parked. I have clarified that the temps have been pretty constant, so once the pack cooled down to the ambient temp say in the first 24 hours, the drop in displayed SoC should have ended, yet it continued in the following 24 hours. If this progression were to continue, then after a week there will be 0% SoC on the display, even if per your theory the pack hasn't discharged much, it just would be reporting like it's empty and possibly refuse to run. So that makes total sense to you, and I am the dumb person here, correct ?

 

[cybercricket]

I had my truck parked for 4 days with Sentry off and my loss was pretty minimal. I have the latest widely released software version. I wonder if when you toggled off Sentry mode there was a software snafu that didn't complete the process. When you turned it off were you in the truck or was it via the app?

The truck is parked at Home, and I have Sentry specifically disabled for this location. I did a walk around (without my phone) to see if the screen will wake up due to Sentry, and to listen if the HVAC is running a couple of times, and didn't notice any activity. When I opened the app yesterday and the day before it did say it was asleep for X hours before the app woke it up and updated the SoC report.

 

[Cyber Man]

Do another test but this time don’t access the app for the entire duration. I have noticed that if I constantly check the app, I wake up the Beast, who is always hungry. I see 5% drain with sentry mode per day. If I check constantly in my app in non-sentry mode, I sometimes drain 3%-4% per day, otherwise it’s hardly 1%.

 

[Cyber Man]

Do another test but this time don’t access the app for the entire duration. I have noticed that if I constantly check the app, I wake up the Beast, who is always hungry. I see 5% drain with sentry mode per day. If I check constantly in my app in non-sentry mode, I sometimes drain 3%-4% per day, otherwise it’s hardly 1%.

Sorry I reread your post. You mentioned you opened the App only once a day. If you don’t open the App and sentry mode is disabled, you shouldn’t see 5% drain per day. I’m not sure how much cold temperature affects. Probably best to book a service appointment and get it checked. All of this should be covered under warranty. Don’t worry about it. If there is a real issue, Tesla SC will take care of it.

 

[Jager]

I made the observation that the truck is losing let's say 10% of SoC per day just being parked. I have clarified that the temps have been pretty constant, so once the pack cooled down to the ambient temp say in the first 24 hours, the drop in displayed SoC should have ended, yet it continued in the following 24 hours. If this progression were to continue, then after a week there will be 0% SoC on the display, even if per your theory the pack hasn't discharged much, it just would be reporting like it's empty and possibly refuse to run. So that makes total sense to you, and I am the dumb person here, correct ?

You're exactly correct. Once the pack has cold-soaked to whatever the ambient floor is, you're not going to see any more "loss" from that corner. Continued reduction in SOC/range would have to be coming from something else.

If you see "Asleep for xx hours" when you open the app - and that time asleep roughly corresponds with how long since your CT was being driven or charged, that would largely eliminate not-sleeping as the problem.

If that "Asleep for xx hours" is something less than what you expected, then you need to find out what is awakening your CT.

The easy way to address it if you've ever used 3rd-party apps in the past... change your Tesla account password.

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