Software Fix? to Heat Pump * Non-Heat Pump Model 3? Software Version?

[MCBalay]

I have a 2018 M3 (non-heat pump) but following all things Tesla I have been watching the journey of people in super cold climates (I am in moderate PA) with complete failures of the heating system.

I saw a twitter post (sorry. didn't catch the specifics) that indicated Tesla was pushing a "fix for our heat pump friends both M3/MY". What got my attention about this post was that it actually caused a heating failure in non-heat pump M3's like mine. Some indication on these issues that failures can cascade to do actual damage to hardware.

1. Can anyone supply the software version numbers of those recent fixes directed at the heat pump failures ?
2. Does anyone know a definitive way to tell from the VIN (or otherwise) whether an M3 has the heat pump or not (I have a neighbor with a newer M3)
3. Can anyone confirm problems with such a software upgrade causing a problem in an older non-heat pump M3, if so which software release number?

 

[MCBalay]

Found this on the Tesla PA Owners Forum (Thanks to David Floyd).

Critical Tesla heat pump fixes coming in 2021.44.30.6 software update [Update]

Tesla has started deploying their latest software update, 2021.44.30.6 to internal employee cars today. The first download was spotted by update tracker Teslascope on a Model S Plaid in Florida this morning. We noticed a […]

driveteslacanada.ca

Aswers some of my questions but not all. I got 2021-44-30-7-software-update this morning but am holding off on install until I find more about what is happening with non-heat pump M3/My's.

 

[MCBalay]

Finally found the blow by blow (a lot from Canda about this)
This is a recent post from that long thread.

Recent heat pump failures - software issue?

Wow, problems on models without heat pumps?: Tesla Heat Issue Drags On: Now It's Model 3s With No Heat Pump It's possible that it's a software/control system issue that is damaging the supermanifold, and that the part revisions have nothing to do with the software issues and only to do with...

teslamotorsclub.com

I could see nothing about impacts to M3/MY WITHOUT HEAT PUMPS....hope that is good news but I am still sitting on 2021-44-30-7-software-update
also would like to help my neighbor...

 

[MCBalay]

Here it is. "PTC Heater" is the resistive heater used in original M3's before Heatpump.

2018 Model 3 with Intermittent no heat

I have a 2018 Model 3 with 54k miles, all of a sudden yesterday the heat doesn't seem to work anymore. I rebooted the MCU multiple times and after sitting for about an hour the heat started working again. This morning heating was working, just now out to lunch heat isn't working again. I...

teslamotorsclub.com

Still not clear on which software version might be implicated and there is some evidence this could be aharsware issue with old PTC Heaters.

 

[Shelburne]

My 2020 M3LR (without the heat pump) has the latest update and there has been no negative effects to the car's heating system that I can find. It's been below zero in the morning a few times in the last two weeks, yet when I get in the car it warms up within a few minutes and stays comfortably warm. I hate heated seats, so I just set the temperature to 70 and everything is fine. Just like it's always been.

 

[medphys3]

It seems that the front flappers are freezing open which is the root cause. Might want to double check them to make sure they’re shut or even proactively cover the opening if your worried.

Frozen Front Flap Leads To Cold Cabins For Teslas With Heat Pumps - CleanTechnica

Some Tesla drivers are having cabin heating issues in very cold weather. Help is on the way.

cleantechnica.com

 

[DeepFrz]

Here it is. "PTC Heater" is the resistive heater used in original M3's before Heatpump.

2018 Model 3 with Intermittent no heat

I have a 2018 Model 3 with 54k miles, all of a sudden yesterday the heat doesn't seem to work anymore. I rebooted the MCU multiple times and after sitting for about an hour the heat started working again. This morning heating was working, just now out to lunch heat isn't working again. I...

teslamotorsclub.com

Still not clear on which software version might be implicated and there is some evidence this could be aharsware issue with old PTC Heaters.

I started seeing reports of issues after -7 release. First report was from Australia where his A/C stopped working after software update.

 

[Mitchi83]

It seems that the front flappers are freezing open which is the root cause. Might want to double check them to make sure they’re shut or even proactively cover the opening if your worried.

https://cleantechnica.com/2022/01/1...ld-cabins-for-teslas-with-heat-pumps/amp/[/UR

My M3 LR 2021 (delivered in 12/2020) with heat pump does the exact opposite. The front cover is not opening any more. It tries to open about 1 millimeter but then it makes a short squeeking noise and moves back to closed position.

The system didn‘t show any error messages. But it seems that cold air is coming from below the seat. The upper half of the car feels heated, but my legs get pretty cold.

I also get this message in Service Mode. Anyone else with this problem? Should I set an appointment?

 

[Mitchi83]

The file Upload does not work... weird. The message says the following:

VCFRONT_a156_louverBlockage
USER TEXT
AUDIENCE [service-fix, factory]
DESCRIPTION The front louver is detecting a blockage. HVAC cabin cooling (air conditioning) and powertrain performance may be limited.
SET CONDITION Louver fails the calibration range check after 5 calibration cycles due to under-travel
CLEAR CONDITION Louver is able to calibrate and reach target.
POTENTIAL IMPACT HVAC cabin cooling (airconditioning) and powertrain performance may be limited

 

[Bogd]

Any news on the VCFRONT_a156_louverblockage error ?

 

[Oleksii]

Загрузка файла не работает... странно. В сообщении говорится следующее:

VCFRONT_a156_louverБлокировка
ПОЛЬЗОВАТЕЛЬСКИЙ ТЕКСТ
АУДИТОРИЯ [сервис-исправление, завод]
ОПИСАНИЕ Передние жалюзи обнаруживают засорение. Охлаждение кабины HVAC (кондиционирование воздуха) и производительность трансмиссии могут быть ограничены.
SET CONDITION Жалюзи не проходят проверку диапазона калибровки после 5 циклов калибровки из-за недостаточного хода
ЧИСТОЕ СОСТОЯНИЕ Жалюзи могут калиброваться и достигать цели.
ПОТЕНЦИАЛЬНОЕ ВОЗДЕЙСТВИЕ Охлаждение кабины HVAC (кондиционирование воздуха) и производительность трансмиссии могут быть ограничены.

Как вы решили эту проблему? Может ли быть неисправность коленчатого вала?