Getting vampire drain in the realm of like 7-8% per day. I'm on 2020.48.37.1 on MCU1 with FSD computer March 2017 build of the vehicle. This is in my garage at 30-35 degrees F. Have it set to all of the lowest power options and try to never wake it up via the app. Sentry mode is definitely off. Any ideas, or is this sadly normal? My Model 3 is nowhere close to this. More like 1-2% per day.
If you have FSD, is Summon Standby enabled? That is a power hog. Our S loses 1% per day, but your garage temperature hovers around freezing so that could reduce available capacity. Do you see the percentage increase back when the garage is warmer? This all could just be correlated to your garage temps and be normal. Is your Mode 3 also in the same garage?
I went through periods of high losses with my MCU1 model X. Some of the episodes lasted for weeks and I never really found why, but they did all eventually self resolve. A few times (after service appointments) I found they had checked the Always Connected button, and that was the problem. No problems since upgrading to MCU2. Never any similar problems with model 3.
I'm in the same boat loosing 5% per day (MCU 1 / FSD). I disabled Teslafi for a month and same thing, the X doesn't seem to ever sleep and I've made sure to make sure all the common settings are off. What I've noticed from watching TeslaFi (and changing the settings many different times) is that the car is not attempting to sleep. My Model 3 has never had a problem
I remember I used to have this problem as well when I had MCU 1, after upgrading to MCU 2, I no longer experience huge battery drain.