2.9.12 HVAC better, Bluetooth busted, voice cmds gone

[tstafford]

Slightly off topic but it's annoying how Tesla rolls out these updates. I'm still sitting on 2.7.56. Wish I could force an update like most firmware.

 

[supratachophobia]

I think that update should do it for you, after some checking with the REST api, I have a logging app that runs 24/7. I can get some example pictures, but basically prio to 2.9.12 (but on 7.0) it was quite aggressively targeting the setpoint temperature. I had it set to 21.5C and thats what I was getting precisely. I was happy with that myself.

Now on 2.9.12, it does like on 6.2, it just reach target and overshoot largely, without correcting. Set 21C you get 23-24C after 15-20 min... I find it stupid, but its what people wants.

The next complaint will come when they'll add the actual cabin temperature on the display (and its probably why they don't). Set HVAC it to 21C, and showing the real inside temperature of 23C.

I think its mostly that we are used to that, and while driving in the cold we get colder and colder and need more and more heat to feel comfortable. Having to bump the set point to 21.5, then 22, then 23.5 and so on would be annoying.

So this update restore the original lazy temperature control: Set something, get more.

7.0 prior to 2.9.12, get what you set
View attachment 103642

6.2 & 7.0 with 2.9.12 (get whatever over what you set)
View attachment 103643

Extremely interesting. This was a vote request on the 7.1 thread, allow for wiggle room (someone had a fancy name for it) so that HVAC isn't as aggressive and more efficient.

 

[green1]

I think the reasoning for the temperature is that the sensor is in the centre of the vehicle (the warmest part) but when driving at speed, the edge of the car with the wind passing over it cools faster than that. So if you have the temp sit at "20" when set at 20, it will be 20 in the centre, but could easily be 17 on your left arm, so you start to feel cold, by compensating they up the temperature to "23" when you set 20, gives 23 in the middle, 20 near the edge of the vehicle.
Without independent measurement it's hard to be certain what's happening, but I can be certain that the REST API isn't going to tell the whole story.

 

[mknox]

I think the reasoning for the temperature is that the sensor is in the centre of the vehicle...

Not on my car. My sensor is located somewhere near the steering wheel on the lower edge of the dash. Later cars saw the sensor relocated to the center armrest/console above the 12v and USB ports. This might be part of my problem... maybe the HVAC was "tuned" for the newer sensor location???

 

[green1]

This might be part of my problem... maybe the HVAC was "tuned" for the newer sensor location???

That is quite likely, I would bet they didn't think to make 2 different HVAC algorithms depending on which sensor location you have. (though that's probably what's really needed)

 

[JenniferQ]

Slightly off topic but it's annoying how Tesla rolls out these updates. I'm still sitting on 2.7.56. Wish I could force an update like most firmware.

Yes, it does seem strange. I had a bad flat tire and had to go in for a new one, and that's when I was notified of the update via the app. Is it because I was at the service center? Or was it a coincidence? I have no idea.

 

[tstafford]

Slightly off topic but it's annoying how Tesla rolls out these updates. I'm still sitting on 2.7.56. Wish I could force an update like most firmware.

Oddly enough I just got the notification that the update is available. I suppose the Tesla gods were watching my posts.

 

[mknox]

Got 2.9.12 last night. The heating was definitely better on my way in to work this morning. I still set the modes and fan speed manually, but now it feels like the heater elements are actually getting more than lukewarm!

 

[GlmnAlyAirCar]

I think I'm seeing something completely different. Prior to 7, I had to keep the temperature at 67 to make the car "feel" like 72 did in every other car I've owned. Okay... no big deal and I got used to it.

With 7, I found that I had to bump the temperature up to 72. It seems to get there just fine, but the car clearly is drifting down as I drive. My feet and legs get quite cold. Whereas 67 used to be "fine" before, now I have to start out at 72 and eventually bump it up to almost 80 over the course of a 1 hour trip.



It is annoying, but I'm not convinced that I just start to "feel" colder. It really seems to me like the interior actually is getting colder, but, of course, I have no actual measurements to verify that.

Looking forward to seeing how 2.9.12 works when I eventually get it.

Admittedly, we have had a fairly warn fall here in eastern PA. However, I have noticed what you are describing, especially during long trips. My suspicion is that perhaps even though the HVAC is hitting the set point, it is only hitting the set point at the sensor. At this point, the fan lowers, so there is little recirculation going on. Hot air rises; cold air sinks. Feet get cold.

It seems to me the real reason they can get this right is hardware - more sensors are needed in more locations. All the software tweaking in the world won't help.

 

[Cyclone]

It seems to me the real reason they can get this right is hardware - more sensors are needed in more locations. All the software tweaking in the world won't help.

Let me revise that for you...
"It seems to me the real reason they can get this right is hardware - more sensors are needed in more locations. All the software tweaking in the world won't make this perfect, but the software may get reasonably close."

 

[brianman]

I found that 7.0 heating prior to 2.9.12 was reasonable for the first 15 or 20 minutes but temperature became erratic after that; particularly on the highway. 2.9.12 seems to work perfectly - temp is stable again.

If true (yay), I have mixed feelings. On the one hand, I want my heating back (2.9.12) but on the other hand I don't want my AutoSteer nerfed (2.9.40).

I really wish they would tell us which version is downloaded in the prompt to install an update. Even better, I'd love to be able to ask for 2.9.12 but reject 2.9.40 ... I didn't miss these days of "not the firmware you're looking for."

- - - Updated - - -

The next complaint will come when they'll add the actual cabin temperature on the display (and its probably why they don't). Set HVAC it to 21C, and showing the real inside temperature of 23C.

I think its mostly that we are used to that, and while driving in the cold we get colder and colder and need more and more heat to feel comfortable. Having to bump the set point to 21.5, then 22, then 23.5 and so on would be annoying.

Having recently driven on a trip ranging from ~60°F to -4°F, the behavior in .77 is not "it's actually using the temperature you set rather than biasing higher."

What it appears to be doing is trying to be conservative with energy spend in the cabin. When parked at a supercharger in 2°F weather, the CC was set at 72°F and I was toasty *in a tshirt*. When leaving the supercharger I put on some additional layers (long sleeve, jacket) and left the CC at the same 72°F. while the temperature outside rose to 10+°F, I was shivering inside the cabin within 10 minutes.

Such experiences were very repeatable on the roundtrip between Bellevue, WA and Las Vegas, NV.

 

[mknox]

What it appears to be doing is trying to be conservative with energy spend in the cabin. When parked at a supercharger in 2°F weather, the CC was set at 72°F and I was toasty *in a tshirt*. When leaving the supercharger I put on some additional layers (long sleeve, jacket) and left the CC at the same 72°F. while the temperature outside rose to 10+°F, I was shivering inside the cabin within 10 minutes..

Very consistent with my experiences pre-heating on shore power. Car at 72 F is nice and toasty when I get in, but after driving a bit, I would start to get cold. As I say, 2.9.12 has improved this significantly for me.

 

[MrPinrel]

I had finally got heating back to almost working by updating to 2.9.77 but now in 7.1 it appears to have reverted back to the 7.0 heating behavior. has anybody noticed this?