My model 3 long range is sitting in my garage. I charged it to 80% on Thursday night and unplugged it on Friday morning. It's just been sitting since that time unplugged but undriven.
It's down to 51% on Tuesday morning.
Down 30% in 4 days seems kind of bad.
Sentry mode is on despite me having it set to not be on at home.
Still seems like a lot of energy usage for a couple of low resolution cameras.
Anyone else noticed this substantial energy usage when not in use?
It's not the standby power draw. It's the computers actively monitoring video streams. If you turn sentry mode off then the car will use almost no power. You might lose closer to something like 1-2% a week with sentry mode off.
Permanently "a few hundred watts" (or something around 300 W according to your calculation) sounds excessive for a passive surveillance system. That's what a gaming PC uses while playing a somewhat demanding game, or a cyclist going uphill.
It's not the surveillance system taking 300w to run.
To keep the car powered on enough that the system is working is going to take up most of that power anyway.
You'd have a similar problem with camp mode which keeps the car on, even with the AC and Sentry off.
In a perfect world if they could design the car so sentry gets powered separately that'd be cool, but sentry was an afterthought, and doing something like that with planning might still be completely impractical
Sentry mode doesn’t allow the main battery to sleep and will drain it. We recently left our Y for ten days with sentry mode off, and the battery barely moved.
No, not even close, even when it's 100+ after the sun goes down and cabin overheat protection is on.
I've read of apps keeping the car from entering standby, although I've never installed anything third party and witnessed this myself. Do you have anything like that installed on your phone?
You don't need to keep the cabin cool. It's completely fine to let it get hot during the day. It will not cause damage. Every other car manages fine when parked in the sun and tesla is no different. The components are rated for high temperature. Overheat ""protection"" is pretty pointless imo. There's extensive discussion of the topic on the tesla forums.
Is it in a spot in the garage where sentry mode would be getting triggered and recording a bit? The car essentially stays awake so if you do want to turn it off, you can do so in the Tesla app > Security and Drivers.
Additionally, are you checking the car via the app often or is your garage hot enough that cabin overheat protection had kicked on?
I just left my 2018 Model 3 LR unplugged for a full week and lost maybe 2% so something is definitely keeping the car awake.