I've noticed similar behavior when the car is around 60-65 percent state of charge, and I think a few others here have similar experiences. As best as I can tell, it's a BMS thing. Your car didn't lose any energy and you'll gain it back around 50 percent or so (you'll actually see the percent tick up as you're parked, or it just goes down more slowly as you're driving).
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Sudden Battery drain
- Thread starter Carbonfiber
- Start date
Something is preventing your Tesla Model Y from entering sleep mode. It could be a software bug or a faulty seat sensor. (The Model Y vehicle may be sensing there is someone seated in the driver's seat or perhaps the front passenger seat.) Do you leave items on the passenger seat that could trigger the sensor?
Rosemary
Member
Same problem Model S 2021. Sits overnight drains 10%. No sentry on. Everything turned off. Tesla device tells me to leave climate in auto mode. Does not make sense to do this. Anyone else leave climate on auto and if you what temp do you have set. I live I. Florida so temps don’t drop very often.
Auto, recirculate cabin air set Off, driver and passenger side temperatures synced, cabin temperature set to between 68F(20C) and 73F (22.7C).
Rosemary
Member
Rosemary
Member
That’s when I had my first phantom drain. Then again after 2022.40. Tesla service says it happened because the updated caused the climate auto to shut off. I don’t think I had it on in the first place. Service told me to set climate to auto. Don’t understand why. Service tried to explain something about a hepa filter not sure I spelled it right. There are fans that run to clean the filters to prevent mold and such. But these fans don’t register power used on the energy graph. Would think a 10% drain would register somewhere. So tonight I am shutting off Tesla app to make sure Tesla goes to sleep. Will see if there is anymore phantom drain in am. I do vent the windows and have Tesla covered and under canopy.
Rosemary
Member
Join the club. I truly think
It has to do with updates. Nothing else explains it. But I cannot convince Tesla service that is the issue.
I turned off the climate control last night. No more battery drain. The update messed it up by keeping the climate running.
Rosemary
Member
At least they take it in to look at it. Tesla service here says nothing is wrong. Yeh right.
Rosemary
Member
Tesla service tells me just the opposite turn the climate control back on. Climate control in Tesla is off windows vented. Have app shut down. So will see tomorrow when wake Tesla up.
They said that on my first attempt to schedule for service, but I’m kept on pressing and even provided pictures. And they still said my battery was fine. I’ve managed to keep my appointment and hopefully there will be some answers.
Rosemary
Member
That makes absolutely no sense. To turn something on to relieve battery drain????
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