I think for me the WORST thing, the thing that made me worry about my loss of range, was TezLab. Their display is REALLY difficult to understand. Why am I shown as losing 26% of my electricity on average? Why does it show me losing 17 miles of range in a day? What is really going on?
Why is it all over the map?
When I was trying to figure it out I had to remove everything from my car so I started using the Tesla app to snapshot the charge level twice a day. That made it obvious that I wasn't loosing all that power while the car just sat, it was going to turning on the heat or the AC before I get into the car. To sitting in the car listening to the radio and waiting for the wife to come out of the store. To sitting in the driveway and adjusting the radio or browser presets.
That's not phantom, perhaps instead of starting to watch for drain when we put the car in park, it should wait until the car is locked and the environmental systems are off. Add a category called Idle that tallies the loss when we are in the car and not driving.
I have since put almost all the apps I had back on the phone and not having an issue, but just to be sure I will wake the car at 8 am and 8 pm and take a snapshot of the range remaining. As long as it's 1-2 miles I am happy, getting the expected loss.
-Randy