50 miles of battery usage parked over weekend I’ve known I’ve had excessive drain for a long time now, but finally decided to pay attention over the w

[HaulingAss]

But that’s kind of shitty. It makes this vehicle more expensive to drive to the airport than a gas guzzler.

You don't leave your gas car idling with the climate control at the airport when you fly?

I thought everyone did that!

Seriously though, why would you park it with the climate system active for days at a time and not expect it to use a lot of energy? That makes zero sense.

Sponsored

 

[GuyV]

then my massive battery drain boggles my mind. My vehicle is using as much as a small house just being parked. If it doing that all the time, like when plugged in at home, it’s way less efficient than an ICE car.

We had a power out due to a tornado last month. I ran an extension to the truck to power my refrigerator, some lights (all LED of course), my computer and phone, the coffee pot once and an occasional few minutes of the microwave. I used a monitoring meter. The truck itself used much more energy over two-plus days than it provided to the house. I've been surprised by better than expected mileage, but it's just not an efficient power source. It's a pity, all that energy capacity, so much wasted. I really hope Tesla can find ways to do some serious optimization.

 

[Kryptek]

also toggle wifi off, that searching can drain a bit

 

[bg002h]

From what I gather, pending software update isn’t handled properly…the existence of an update ready to download prevents vehicle from sleeping. I normally get the “advanced” updates but I think I’ll switch that setting back to normal just before my next trip and hope for the best.

You don't leave your gas car idling with the climate control at the airport when you fly?

I thought everyone did that!

Seriously though, why would you park it with the climate system active for days at a time and not expect it to use a lot of energy? That makes zero sense.

That’s not what occurred. Climate control is off. Sentry is off. It’s apparently a known bug in Tesla’s software. If they have a software update available and you don’t install it, then the vehicle can’t enter sleep mode.

Overheat control at 100° used about double the power of the software update not letting the car sleep bug. Once I install the update, the electricity theft through software negligence will cease. It’s never had a phantom drain before.

I’m ok with my beast being a beta product. My only hope is that these issues get fixed and a great American company arises from what is and makes a great truck someday. Maybe even one like the CT they showed us in 2019…I’d buy one of those tomorrow if they offered one for sale.

 

[bg002h]

We had a power out due to a tornado last month. I ran an extension to the truck to power my refrigerator, some lights (all LED of course), my computer and phone, the coffee pot once and an occasional few minutes of the microwave. I used a monitoring meter. The truck itself used much more energy over two-plus days than it provided to the house. I've been surprised by better than expected mileage, but it's just not an efficient power source. It's a pity, all that energy capacity, so much wasted. I really hope Tesla can find ways to do some serious optimization.

It shouldn’t be hard to fix. But they’re not a big company and they’re at the mercy of their programmers.

 

[HaulingAss]

That’s not what occurred. Climate control is off. Sentry is off. It’s apparently a known bug in Tesla’s software. If they have a software update available and you don’t install it, then the vehicle can’t enter sleep mode.

That's why I make it a point to install all of the minor fixes as soon as they are available for whatever build my vehicle is running. If they don't have a fix yet for this kind of simple problem (identify why the previous update prevents sleep), they will shortly.

 

[Bobo_LaDouche]

Fantom drain is scary to me. I keep sentry off, climate control off, and leave the windows cracked open, since I live in the desert. The car does not seem very modern under these circumstances, but probably works for the programmers since their universe is between two coffee shops.

 

[Bobo_LaDouche]

Fantom drain is scary to me. I keep sentry off, climate control off, and leave the windows cracked open, since I live in the desert. The car does not seem very modern under these circumstances, but probably works for the programmers since their universe is between two coffee shops. For me, I could come back to a car that does not start, and end up walking 100 miles.

 

[bg002h]

Made it home from Finland. CT had 10% battery when I got back after 1 week. Parked at 62%.

I didn’t go to energy settings to see what the major malfunction was before driving to two charging locations (first one navigator selected was behind a “team members only” badge reader, which meant I had only 7% left to go find another supercharger.

These stupid Tesla beta testing bugs added 45 minutes to my journey, which was over 24 hrs of trains, planes, and FSD. Thankfully, FSD can’t tell if you’re nodding off repeatedly but catching yourself in short order.

I hope someday Tesla makes a really cool cybertruck like the advertised prototype, but this shit ain’t it. Thank goodness I only spent dollars to acquire my beast, not something valuable.

 

[bg002h]

That's why I make it a point to install all of the minor fixes as soon as they are available for whatever build my vehicle is running. If they don't have a fix yet for this kind of simple problem (identify why the previous update prevents sleep), they will shortly.

I hope so. Never had drain before. But the fact that the people who actually own my vehicle get to install bugs like that means I’ll never consider Tesla a real vehicle. I see my purchase more as a gift to a company with an inspiring idea that could reshape the American auto industry and I’m all about supporting that. But I’m not gonna deny CT sucks compared to what Elon said he would deliver. I followed none of the Tesla news from 2019 until delivery…in fact, I couldn’t even pick up my CT 3 hrs away and send my POA to pick it up for me. I was shocked at how much was missing from v0.2024 compared to v0.2019.

 

[PungoteagueDave]

Almost 10 hours and zero drain. That accessory on button really hosed me, but at least going forward the drain at home and work should be negligible. Crappy thing is I sized my upsize on my solar panels based on my usage over the last year, which was apparently grossly overstated thanks to my lack of focus on getting this dialed in. Oh well - more AC usage this summer ;-)

Software v12 (2025.20.3 8252e1d331e0)

Hey, welcome to the club - my CT is named BRUTUS too. This might be like my grandkids’ names - seems like every other seven-or-eight-year-old is named either Hudson or Emma, as are ours. We have family history with those names, so claim first dibs, no such claim on BRUTUS.

 

[CyberGus]

I left my truck for 8 days while out of town, it lost less than 0.5% per day. I have Sentry disabled while parked at home, since I have security cameras. That 8-day drain drain even included applying a firmware update lol.

If you're burning significantly more than that, open a service ticket. (Sentry efficiency was "improved" a few releases ago, but it's still a pig at 4-5% per day.)

 

[PungoteagueDave]

I left my truck parked in my garage, everything off including sentry, on May 12 with 58% SOC. It wasn’t plugged din because for new we have only one charger for two Teslas, and my wife’s ‘26 MY won the draw.

We returned yesterday, June 17, found the truck at 36% SOC. I woke the vehicle from sleeping three times while hiking in Europe to check in. That’s 36 days without charging, 22% vampire draw. Acceptable to me.

 

[PungoteagueDave]

I left my truck parked in my garage, everything off including sentry, on May 12 with 58% SOC. It wasn’t plugged in because for now we have only one charger for two Teslas, and my wife’s ‘26 MY won the draw.

We returned yesterday, June 17, found the truck at 36% SOC. I woke the vehicle from sleeping three times while hiking in Europe to check in That’s 36 days without charging, 22% vampire draw. Acceptable to me.

 

[MilliM]

Hey, welcome to the club - my CT is named BRUTUS too. This might be like my grandkids’ names - seems like every other seven-or-eight-year-old is named either Hudson or Emma, as are ours. We have family history with those names, so claim first dibs, no such claim on BRUTUS.

Back in the 70s/80s when I was a wee lad we had a motorhome and the handle/name on the CB radio was Brutus, so I had to go with it!

Sponsored