Tesla Motors Club
I wanted to test parasitic drain on the Y. I'm a pilot and I park at the airport for one to two weeks on a regular basis. The first time I parked my 3 at work I very nearly had to walk home! LOL. I learned to turn off Sentry mode, Summon Standby and the Security alarm. I also did not access the car with the mobile app.
So, yesterday at 0800, I turned off the alarm, sentry mode and summon standby; then unplugged the car and let it sit overnight. The car was parked in my garage and the temp varied from 58F to 65F. I checked it again this morning at 0800. Starting range was 223 miles, ending range was 222 miles. Excellent.
With rounding, this means the loss could have been as little as .2 miles--222.6 dropping to 222.4--or as great as 1.8 miles--223.4 dropping to 221.6. Once I park for a longer time I'll update this post. (Yes, I ignored the .5 increments for clarity.)
There are 5 parasitic draws that we can control: Summon Standby, Sentry Mode, Security Alarm, Allow Mobile Access and starting the mobile app. (Disabling "Allow Mobile Access" should probably also eliminate battery drain due to the app.) I have tested loss due to the first two, but not the second two. (The test on the first two was done on a model 3.) I also haven't tested exactly how much you lose by starting the mobile app, but I am certain it causes a drain. The owner's manual mentions avoiding accessing the mobile app while the car is parked for an extended period.)
Leaving either Summon Standby mode or Sentry Mode on can result in a loss while parked of up to 24 miles/day. This isn't additive; if either mode or both modes is turned on you'll get the loss. However, if the car is in a high traffic area numerous sentry events could drain the battery further. I'm unsure how much power "Security Alarm" will draw if it is the only option activated. That'll have to be another test. Any time you start your mobile app will drain the battery as well because the car is forced to wake up every time you start the app. One last setting I haven't tested is "Allow Mobile Access." I haven't bothered yet because I never park the car for longer than two weeks. Still, it would be a good idea to run a week long test with all 5 draws eliminated.
So, yesterday at 0800, I turned off the alarm, sentry mode and summon standby; then unplugged the car and let it sit overnight. The car was parked in my garage and the temp varied from 58F to 65F. I checked it again this morning at 0800. Starting range was 223 miles, ending range was 222 miles. Excellent.
With rounding, this means the loss could have been as little as .2 miles--222.6 dropping to 222.4--or as great as 1.8 miles--223.4 dropping to 221.6. Once I park for a longer time I'll update this post. (Yes, I ignored the .5 increments for clarity.)
There are 5 parasitic draws that we can control: Summon Standby, Sentry Mode, Security Alarm, Allow Mobile Access and starting the mobile app. (Disabling "Allow Mobile Access" should probably also eliminate battery drain due to the app.) I have tested loss due to the first two, but not the second two. (The test on the first two was done on a model 3.) I also haven't tested exactly how much you lose by starting the mobile app, but I am certain it causes a drain. The owner's manual mentions avoiding accessing the mobile app while the car is parked for an extended period.)
Leaving either Summon Standby mode or Sentry Mode on can result in a loss while parked of up to 24 miles/day. This isn't additive; if either mode or both modes is turned on you'll get the loss. However, if the car is in a high traffic area numerous sentry events could drain the battery further. I'm unsure how much power "Security Alarm" will draw if it is the only option activated. That'll have to be another test. Any time you start your mobile app will drain the battery as well because the car is forced to wake up every time you start the app. One last setting I haven't tested is "Allow Mobile Access." I haven't bothered yet because I never park the car for longer than two weeks. Still, it would be a good idea to run a week long test with all 5 draws eliminated.