Forums

Long term parking

Long term parking

I parked my car in a garage at the airport for 2 weeks while on trip and was surprised on how much the battery went down. I tried to shut everything off. Does anyone have any feel for what is normal usage and how to minimize

jordanrichard | February 7, 2018

What was the temperature outside? Did you keep pinging the car to check in on its status? Doing so wakes the car up to communicate with the app and that uses energy.

redacted | February 7, 2018

How much did it go down? Did you turn on range mode and what did you turn off?

mrporter6 | February 7, 2018

It was in a garage and the temp was never below 45. I closed the main screen and the heater . I think I used about 15 miles in 16 days

Bighorn | February 7, 2018

A mile a day is exceptionally good.

bsteinesq | February 7, 2018

There are a number of settings I use when I park at the airport for a couple of weeks---they make a big difference. They are:
energy savings-ON
smart preconditioning-OFF (I never use it anyway)
Cabin Overheat protection-OFF
Always Connected-OFF
I also unplug my dashcam (which will shut off after 12 hours anyway, but every little bit helps).

last August, for 15 days at JFK airport (using the Evannex car cover), I lost 11 rated miles, about 3KW of power.

djlott | February 7, 2018

Loss of 15 miles in 2 weeks? I'm not sure I would have even noticed.

Anthony J. Parisio | February 7, 2018

That sounds normal for Winter.

Craig1965 | February 7, 2018

My guess is you left the heat on in the car if your bill was $800. That is easy to do by leaving the phone app in the background. Tesla should really update the app to turn everything off when no user input or car input for 15 minutes, or at least have the app show an alert.
That said, I have been involved with lithium ion batteries for a decade, and yes the Tesla needs to keep them from freezing in the winter so it will use some electricity for that. Best practice, and what I do every day since I don't drive more than 100 miles in a day, is set the car to charge to about 60%. Your battery will last way over the rated 8 years as 60% is the proper storage state for these batteries (50-70%). Charging above 90% or below 20% will age your battery faster, as will Superchargers above 85% or so. Hint: Your cell phone battery sucks and is about half of it's new on time after 2 years. That is because everyone charges their phone to 100% every day and runs it below 20%, same thing, keep your charge between 30 and 80% and your cell phone battery will last longer, assuming you keep it at around room temps.

Craig1965 | February 7, 2018

My guess is you left the heat on in the car if your bill was $800. That is easy to do by leaving the phone app in the background. Tesla should really update the app to turn everything off when no user input or car input for 15 minutes, or at least have the app show an alert.
That said, I have been involved with lithium ion batteries for a decade, and yes the Tesla needs to keep them from freezing in the winter so it will use some electricity for that. Best practice, and what I do every day since I don't drive more than 100 miles in a day, is set the car to charge to about 60%. Your battery will last way over the rated 8 years as 60% is the proper storage state for these batteries (50-70%). Charging above 90% or below 20% will age your battery faster, as will Superchargers above 85% or so. Hint: Your cell phone battery sucks and is about half of it's new on time after 2 years. That is because everyone charges their phone to 100% every day and runs it below 20%, same thing, keep your charge between 30 and 80% and your cell phone battery will last longer, assuming you keep it at around room temps.

trevor58 | February 7, 2018

Say what?
Say what?

SUN 2 DRV | February 8, 2018

Loosing 5 miles a day when parked is not unheard of...

hammer @OR-US | February 8, 2018

Wrong thread
Wrong thread

Craig1965 | February 8, 2018

Sorry for the double post. Stupid Captcha kept failing saying it was spam then it posted twice.

TeeJayMarkII | March 12, 2019

I just lost nearly 10 miles per day in 2 weeks (Tesla Model X 75D 2018). The car is in a Parking garage. It says it is 56 deg inside and I only woke it up a couple of times. Is there something wrong?

Mikael13 | April 7, 2019

I’m going on vacation in a month or so for 10 days. I’m thinking of leaving it at my in law’s place (safe neighborhood/new build). Would you think it would be safe to leave the car plugged to a 110v backed up on the driveway with the garage door down? I’m afraid of the drain while I’m on vacation. I have a AWD M3 and my brother in law’s place is 100 miles from me and the airport is another 100 miles away, and we’ve decided to get a shuttle to SFO. Thoughts?

redacted | April 7, 2019

$800 is a lot of money for 15 miles of range. Even in California.

@Mikael13, It should be fine leaving it plugged in. Also it's 120v.

Bighorn | April 7, 2019

@Mikael
I left mine parked for two weeks and I was only losing 1% every 2 days. At that rate, it wouldn’t even draw power from the plug for the first seven days or so, until the re-up threshold was reached. (Assuming car was left already at the target SOC) No harm in leaving it plugged in, but not necessary if your car is working as designed.

p.c.mcavoy | April 7, 2019

@Mikael - Bighorn’s comment of only losing 1% every two days is representative if you leave it alone and let it go into a deep sleep. If you check on it all the time with the app to see how it’s doing, you’ll keep waking it up and you can lose more like 1-2% per day vs. 1% every 2 days.

Mikael13 | April 7, 2019

@ Bighorn and @ p.c.mcavoy ... thanks for the response.

Knowing myself, I wouldn’t be able to control myself and would periodically check on my M3. I’ll be watching phantom drain for the next month. Appreciate the feedback!

Bighorn | April 8, 2019

@pc
That was with me waking it up daily, actually. I think the 3 has a more aggressive sleep cycle than earlier cars when that old wives’ tale came to be.

RAR | April 8, 2019

Set Display > Energy Saving > ON, and do not check Always Connected. Do not check on it from the app. I lose 8 miles in 7 days in the SAV airport parking lot.

S90D December 2016 build (HW 2.0, MCU 1)

barrykmd | April 8, 2019

RAR - When you get back to your car, how long does it take to "wake up?"

Bighorn | April 8, 2019

@pc
Begging your pardon. I'm mixing my 3 experience into this S thread. Hard to keep them straight sometimes:)

p.c.mcavoy | April 8, 2019

@BH - No problem, I'll cut you some slack ... but just this once! :-)

I'd be curious whether the difference between your MS and 3 observations is something unique to the 3, versus it's an MCU2 vs. MCU1 difference. If it's the MCU difference, and Mikael's MS is a recent car, then it could be that your 3 experience is actually more representative.

RAR | April 9, 2019

@barrykmd
No more than 1 or 2 seconds. I touch the trunk to put my bag in, and it seems to open as fast as when I have Energy Saving > OFF. Then the door handles present and the screens come on normally.