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Battery Drained 30% overnight..Big Flaw, Easy Fix
- Thread starter CactusOne
- Start date
It’s a Tesla.... you conform to its needs, not the other way around! 
Snow Drift
[Off-Road Assist] Activated
@CactusOne you should turn on the lock horn that way as you walk away you listen for the confirmation sound.
I’m still confused on which battery died.
- The interior should be run by the 12V.
- Or are we saying the actual BEV ~75 kWh battery died?
I’m still confused on which battery died.
- The interior should be run by the 12V.
- Or are we saying the actual BEV ~75 kWh battery died?
So you left your car in your garage unplugged overnight and it was at about 30%SOC when you left it with a rear door open.
You say you left the radio, lights, A/C on and the car “NEVER went to sleep”. So the reason you know that is that when you got to the car in the morning the radio, lights, A/C were still on?
And at that time what was the battery SOC? You didn’t say.
Jaywlker
Former Vendor
I woke up this morning and was excited to drive my M ≡ Performance, but the battery was completely dead!
Last night in the garage, I took the kids in the car and I was showing off the new “fart” update. Lots of giggles with some father and son bonding moments
Here is the problem (Flaw). My youngest son was in the back seat. The three of us exited the car at the same time and apparently he didn’t use enough force to close his door all the way and it remained “ajar” all night. As a result, the car NEVER went to sleep, and the radio, interior/exterior lights, A/C etc..were all ON all night long which resulted in the drain. I did not have it plugged in obviously.
Tesla needs to address this issue. The app should notify you if a door remains open after a certain time. Better yet, the app should notify you ANYTIME a door is open or opened. That way it will also serve as a notification of potential thief.
I’m glad this happened in my garage and not on a road trip somewhere.
I finally got use to the fact that you don’t really turn off this car..you put in Park and just get out and walk away. BUT, if a door is not fully closed the vehicle will stay on!
Please Fix this with the next update Tesla. Easy fix to a potentially big problem. IMHO
Thanks..
I don’t think leaving the door ajar is Tesla’s fault. You might try buying the Stats app. It will alert you if a door is left ajar. Plus it has cool data analysis, and is a one-time purchase for the app instead of a monthly payment like EVE’s Teslafi app.
Jaywlker
Former Vendor
And a single purchase of the app works for all of your Teslas if you get a 2nd.
I think Tesla used to turn off Climate if no one was in the car and Climate was turned on remotely (e.g., using an app). Sometime in 2017, a firmware update changed that behavior and now, climate is not turned off automatically until the battery reaches ~20%.
skitown
Member
A few nights ago, I installed a new update from my phone around 11:30PM on our Model 3. I then turned on the climate to HI (for just a few minutes!) so that I could go out to a toasty car and play some Pole Position. Instead, I fell asleep on the couch.
When I woke up in the early morning, I looked at my phone and had an alert (believe it was a native Tesla app alert) that climate had been on for 4 hours without anyone in the car, so it had been shut off. This is how I remember it. Let's just say my garage was insanely warm. Even the Model S next to it was really toasty! 
You deserve a spankin' for your post. First of all, why is it Tesla's fault that you didn't check your door when you got out? Second, why would you leave your car unplugged when it only had 30% of charge? SMH
I’m having a difficult time conveying my message. Yes, it was my fault for having a low SOC before this incident. I was in my garage,
However, this is an electric vehicle that I may use to get from point A to B and then back to point A. Lets say once you are at point B the RIGHT rear door is left ajar without being noticed for several hours. Once you return to the vehicle you are stuck because battery is drained,
In an ICE vehicle if you drain your battery fully, you get a jump or if its a manual you push, pop the clutch and go....
If you look at the app, the RIGHT rear door is not visible,,,if you happened to look at it,
To prevent this from happening in the M3 it would be nice to get a notification that a door/window/frunk/trunk was left open or it was opened without your knowledge..thats all I’m trying to convey.
Can someone else test their car and report back here...go in your garage, leave the right rear door ajar..turn on your radio, heater and heated seats then go back inside...check the car in 30 minutes and see if yours shut down. Check the app and see if you can tell the right rear door is open also.
Thanks
However, this is an electric vehicle that I may use to get from point A to B and then back to point A. Lets say once you are at point B the RIGHT rear door is left ajar without being noticed for several hours. Once you return to the vehicle you are stuck because battery is drained,
In an ICE vehicle if you drain your battery fully, you get a jump or if its a manual you push, pop the clutch and go....
If you look at the app, the RIGHT rear door is not visible,,,if you happened to look at it,
To prevent this from happening in the M3 it would be nice to get a notification that a door/window/frunk/trunk was left open or it was opened without your knowledge..thats all I’m trying to convey.
Can someone else test their car and report back here...go in your garage, leave the right rear door ajar..turn on your radio, heater and heated seats then go back inside...check the car in 30 minutes and see if yours shut down. Check the app and see if you can tell the right rear door is open also.
Thanks
Jaywlker
Former Vendor
My M3s are both at the service center, but I recall Romance Mode heating the cabin after the car “shut down” when 30 minutes had passed. As to doors being ajar, the Stats app has a “door ajar” notification that has saved me a few times.
Krugerrand
Meow
Or you could just accept you own an EV and take that extra second to plug it in always as is strongly suggested in the manual AND set the automatic beep for locking on since you do own young children, who have now demonstrated they might exit the vehicle and not close the door properly.
I’ve never particularly liked going to gas stations to fill my ICE car, or regularly checking the oil, or getting tune ups, or, or, or but it’s all part of owning one.
Just tested this exactly as requested. Car shut down after 30 min. It must have been right at, or near the 30 min mark as I checked on it periodically and it was still on around the 25 mark.
In the app, no I could not see that the door was open.
silentsnow31802
Member
Nope. I noticed it was open before I went inside.
I will say something on the dead battery note though. Ive had a car that was involved in an accident. It blew the Pyro fuse so the 12V system died completely about 36 hours later. The car was completely dead for a month. Car came back up fine with no damage to the 12V battery.
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