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Brand new MYLR, I'm getting this noise when heating up the cabin. Very annoying. Service appt in a couple of weeks, hope they can fix it.

If this is the case, then they need to stop hiding it in the Vehicle Standby section. This is horrific UX, I shouldn't expect to park my car for 20 minutes and come back to a car reporting 3-4% less charge.

"No issues found"... "behavior is expected operation"..."energy usage came from normal things such as 12v battery maintenance and evaporator core drying routines"..."well within specification" So no.

I assumed this wasn't it, but I verified this wasn't the case for me. I have a service appointment tomorrow in which I'm sure they'll tell me everything is fine, but I guess we'll see.

I suspect this to be the case. That being said, this is really crappy UX by Tesla. It gives the appearance that the SOC measurements are unreliable, which is not great for anyone with any range anxiety, or parking for an extended time at an airport, or anything else that would make unexpected...

Same as you. Very rarely open the official app, Tessie to watch the stats without waking.

32.7 on my MYLR here. Parked it 50 minutes ago at 63%, now reading 60%. This is getting really frustrating.

I agree with your assessment *BUT* the Wh/Mi reported by the car hasn't changed significantly since that update. It does feel like the BMS percentage reporting is basically just made up at this point though.

This is very similar to what I'm seeing. Though in the end, if you go to the "Park" tab I'll see ~7% lost to "Vehicle Standby" over the course of a week or so. I filed a service request, we'll see what happens.

That's not the efficiency lost to the charger, it's the amount it charged the battery.

My most recent test - I charged the car to 80%, drove it down to 15%, charged it back to 80%. Car said it used 43 kWh to get down to 15% and needed 50 kWh charge to get back to 80%. That's 14% charge not used by driving. That seems like a LOT. What are other people seeing?

I'm glad I finally found this thread. My ~1 year old Y is experiencing the same thing. It seems like the fan/HVAC is running for 30-60 minutes after I leave the car and I'm getting 2-3% "Vehicle Standby" power drop per day. I can't be sure, but I feel like this started recently and it is...