Tesla Firmware Update 2021.24.5 Resolves My Car’s Sleeping issues

As you probably know, today’s cars are almost more like our smartphones than like the cars we knew and loved from the 70’s and 80’s. Electric Vehicles (EVs) even moreso.

I have a 2017 Tesla Model X. Most of the time I have it parked at home where I can leave it plugged in as much as I want to ensure that it’s always topped up and ready to go with a full tank of “gas”.

One big difference between EVs and Internal Combustion Engine (ICE) cars is that, unless you leave your headlights on, there is very little that will impact your ICE car if you leave it just sitting somewhere like an airport parking lot while you are traveling to some far away destination. EVs, or at least Teslas, have a relatively low power “Idle” mode that they enter immediately after you lock the car and walk away.

They also have an ultra-low power consumption mode referred to as “sleeping” that they are supposed to enter soon after that. They are supposed to remain in this sleep mode most of the time they are not in use, waking now and then to check for software updates or to perform some internal housekeeping.

Since I’ve owned my car, it has be very reticent to actually sleep. This didn’t affect me much except to be concerned for what the long-term impact of the car basically staying active all the time might do to its components. This was dramatically exacerbated when I upgraded my Full Self Driving computer and Media Control Unit (MCU) to the latest and greatest versions.

When I was at home any drain was not an issue since the car could be plugged in all the time if I so chose. But I found my “Phantom Drain” (as the excess power consumption caused by not sleeping is called) was pretty impactful when away from home. I was on a cruise a while ago and lost just under 30% of my battery state of charge just sitting in the hotel parking lot for a week.

Anyway, this is all just a preamble to say that the latest firmware update – called 2021.24.5 (I get these, on average, about every 18 days) seems to have absolutely addressed the sleep issue for my vehicle.

I mean it’s night and day. Where it was alternating 16 minutes sleep, 45 minutes idle for much of the day, ever since the update it sleeps for literally HOURS at a time regardless of whether it’s plugged in or not!

It even sleeps when it’s not at home (Sentry mode off, of course) which was a rarity before. But now it appears to be the norm.

I imagine this does not affect a lot of people, but I’m pretty pleased with this update.

Oh, and as a sidenote, as of about 3 software updates ago (2021.12.25.7 or 2021.24.2) I was finally able to log into YouTube in my Tesla’s entertainment system.

So somebody on Tesla’s engineering team seems to be fixing these ancient issues…

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