I don't know how much further the vampire load could have been reduced in this case, given that the overnight temperature was low. The owner needs an estimate of how much energy the battery pack is going to require for a range of temperature minimums. Tesla advises that the car be plugged in as much as possible. It appears the reporter was unaware of this advice, because he never considers rigging a L1 hookup for the night.surfingslovak said:thankyouOB said:The thermometer read 10 degrees and the display showed 25 miles of remaining range — the electrical equivalent of someone having siphoned off more than two-thirds of the fuel that was in the tank when I parked. I called Tesla in California, and the official I woke up said I needed to “condition” the battery pack to restore the lost energy...[/i]
This is very unfortunate, and the behavior was documented in several threads on TMC. Last thing I heard was that Tesla reduced the vampire load when the car is parked overnight, but it's likely still quite large. It's unfortunate that this reporter encountered the problem. They need to fix this, and soon.