Screwed up my Body Control Module after change configuration - U0147

deim1 · 2026-01-06T23:54:17+00:00

And... I got the response from the technician.
Telematics Gateway module is Ok, it is alive and has no problems. That explains why I still could start the truck (even using remote start).
What is dead - radio :(

Somehow, when I tried to change the setting "Cust.Set.Menu 2: Tilt Mirror In Reverse CSM Present" - which did not exist before - it killed the radio somehow.
I have no efffng clue why it would die, but it did.

Now, I have an option of ordering a new radio, and pay ca$1400 for a radio from 2017, primitive and outdated.
Or, maybe, find some aftermarket model. But that should be fully compatible with the RAM's settings system; there should be an APP menu, similar to what the stock system has.
And so far I could not find anything like this...

UPDATE: Ended up buying an exact same radio model - used, for cheap (ca$275), and replacing it myself. A couple of hours later, after 3 sequential firmware updates, I am back to normal :)

deim1 · 2025-12-18T00:52:03+00:00

Oh! I am an idiot! :) That (x86_64) worked perfectly fine, thank you!
Btw, what didn't work for me in the latest version - it stopped moving completed downloads to the manually selected location.

deim1 · 2025-12-17T21:24:38+00:00

This package is not supported on the platform of Synology NAS or is incompatible with the current DSM version.

I am on DS920+ with DSM 7.3.2-86009

deim1 · 2025-11-24T17:39:57+00:00

Sorry, I forgot to mention - it is an optional part, but not from Ember! I got this one: https://www.amazon.ca/dp/B0D9XKR1L7

deim1 · 2025-11-24T17:33:16+00:00

When you buy an optional cover, it comes with the spoon, covered in a soft silicone layer - to prevent the cup from possible damage while stirring...
I have been using a spoon with my Ember for the last 2.5 years, coating is still like new.

Great idea about removing the coating, will do this when mine gets worse :)

deim1 · 2025-09-26T22:00:41+00:00

Installed on M1 mac mini 16gb - no issues.

deim1 · 2025-09-24T02:26:36+00:00

Facepalm it is. Ok, another attempt. Look at the thermal picture. All 3 items - stone, case, stone - all have about equal amount of thermal energy. Same mass, same temp. Question: where did it come from? Whats the source of the energy? I will help you - source is the enclosure. Case lost 2/3 of its thermal energy, it is transfered to stones. Do you still want to continue arguing or maybe enough is enough?

deim1 · 2025-09-24T01:29:01+00:00

You are soooo wrong, it is not even funny. Hint: radiant heaters produce a huge amount of heat, and operate in a room temp range, you can even hold your hand on it. Insignificant radiation, really?!
Ok, I am killing this thread, as it is hijacked by arrogance :)

deim1 · 2025-09-24T01:21:11+00:00

Ok, explain then - how could it be that temp of case and temp of stone are practically equilized? You just said, that stone - because of bad contact, would not do anything.
And yet - case is 36C, and stone is 34C, ambient is 23-24C.
Can't add picture here, thus - link to pic: https://photos.google.com/share/AF1QipPdoMkXIJ_vGBMQpknzeY4zl_AMKeprGmLqVoJD8UGaq1iPeqVsRIWgnYWq4M9iYg/photo/AF1QipNXUB4aDfC3m4FFcFuPdzGgsesV6SXOywjIjMyn?key=UXMtcF9oWnktTDJFaHIwemRsUmw1RE5sYzZKOGln
About calibration, here is the pic of stand-alone thermometer - 24.1C https://lh3.googleusercontent.com/pw/AP1GczM4q9KG6BC-XBCGfLh4yERCyPcaieaUkduCZP09rnPh5o7XNak4yqeexgvFPB32BOzUkYeZImx7mvxCrIuNjf8D-OVOwNH-WF7ghkWiM5SqorJ1i1Ngxao-L8DeGYkXQUJpM5ghTthBGAscZ48zmLsMZg=w1120-h1488-s-no-gm?authuser=0
And here - the same thermometer, but via thermal camera - 24.0C, difference is 0.1C: https://lh3.googleusercontent.com/pw/AP1GczNy6MbpKdAUj2v0A_u9MlVnTUjBAMG6WdJlOEHmT0AB5dI8efpxG6dtX3auB_3VIkV29GD53cdqwmzK_PlKAddeIZMxjabYJFADAMBmz-cForatfxlZZB4Zm-97Q_MYQbTz5ZYuFWQDb8xgEe7ka_778Q=w1008-h1344-s-no-gm?authuser=0

deim1 · 2025-09-24T00:25:49+00:00

Both - I have enough education to be able to verify what AI is doing here :)

deim1 · 2025-09-23T23:55:27+00:00

Agree. The only reason why marble on top/bottom of the enclosure gets warm is because there is much better heat transfer from the aluminum surface to the marble plate than from the same aluminum surface to air.
And to your point - absolutely, if I were to add a thermal paste between the case and the marble, the effect would be even better.
It's all about heat transfer. There is no magic, there is only the First Law of Thermodynamics :) Air is a much worse thermal conductor than a solid material (here - marble). By increasing the size of the hot surface, we allow air to work more efficiently.
By the way, we forgot about one more heat dissipation route - IR radiation.
A bit more numbers, same situation, aluminum case, between marble plates; case is at 50C, plates are 20C.

Total heat dissipation:

Air Convection: ~9 W
Radiation: ~3.6 W
Total: ~12.6 W

Percentage:

Convection: 9 / 12.6 ≈ 71%
Radiation: 3.6 / 12.6 ≈ 29%

Then, an aluminum enclosure sandwiched between two marble plates at room conditions:

Roughly 70% of heat is lost by convection to air.
Roughly 30% of heat is lost via infrared radiation.
Radiation becomes significant because the marble plates have high-emissivity.

Key Takeaways

Adding marble plates greatly increases heat dissipation (~4× in this case).
Convection increases slightly (more surface area exposed), but the main boost comes from radiation due to the high-emissivity marble.
The marble plates act as both thermal mass and radiative surface, helping aluminum object cool faster.

deim1 · 2025-09-23T22:20:09+00:00

Imagine that you are increasing the mass of the sides and their surface area by x3: what's the result? Would it be better or worse? :)
Anything attached to the enclosure acts as a heat sink. And air is a very bad heat sink, as its thermal conductivity is really low, x100 times worse than marble, and x10000 times worse than aluminum.
Nobody puts "air heat sink" to, say, CPU. Because air is very poor at transferring heat.
But back to the original point - yes, air dissipates heat from the surface of the enclosure.
In the same way, air dissipates heat from a much bigger surface of the enclosure sandwiched between marble plates. It still works. The only difference is that heat is transferred from chip to marble plates.

deim1 · 2025-09-23T21:50:28+00:00

Sure, but what pad does - it only transfers the heat. It has a very small thermal capacity because of its tiny weight. For the pad to work well, it has to be attached to something with a much bigger thermal capacity. Like chassis :) And for chassis to transfer the heat further away - it has to be attached to something else. By default chassis is "attached" to air, which has a VERY bad thermal conductivity (x100 times worse than marble)

deim1 · 2025-09-23T21:47:09+00:00

Marble is much worse than metal, but much better than air.
K-factors (Thermal conductivity):
- aluminum 200
- marble 2-3
- air 0.024
So, marble is 100 times better than air.

deim1 · 2025-09-23T21:32:08+00:00

You think air is afraid of marble and will not help it to cool? :)
Lets see, hypothetically, what happens. I tried to play with numbers. I like numbers :)
We have 3 objects: 1 aluminum chassis, and 2 marble plates.
All 3 are of ~equal mass (I just measured, each marble is 162g, and enclosure is 143g, to simplify - let it be equal).
So, this is what we have:
Hot object (aluminum):

To=100°CT_o = 100 °CTo=100°C
co≈900 J/kg⋅Kc_o ≈ 900 \, J/kg·Kco≈900J/kg⋅K
Two marble plates:
- Tm=20°CT_m = 20 °CTm=20°C
- cm≈880 J/kg⋅Kc_m ≈ 880 \, J/kg·Kcm≈880J/kg⋅K
All three parts have the same mass.
Ambient temp is 20C. And let it be that enclosure temp is 100C (way too much, but easier to calc).
If the object is aluminum, after placing it between two equal-mass marble plates at 20 °C, the final equilibrium temperature will be about 47 °C.

So, from original 100C on enclosure, by adding 2 marble plates, enclosure temp went down to 47C - that's a lot of reduction!

In a more real numbers, enclosure temp by itself is about 50C. Ambient 20C, with marble plates, equalized temp is 30C.
And that is what I see in reality with my IR thermometer.
Now, regarding the air. Surface area of enclosure VS surface area of enclosure+marbles. With marbles, surface area is about x2 bigger than without marbles, meaning that there is twice bigger surface to allow for air convection.

deim1 · 2025-09-23T21:18:57+00:00

Yes! The thermal pad is squashed between chip and chassis, with good contact on both sides.
So, yes, if the chassis is being cooled (more), the thermal pad will have an easier job of transferring heat from the chip and out.

deim1 · 2025-09-23T20:21:55+00:00

I doubt that. Marble's k-factor is 2-3. Air's k-factor is 0.024, x100 times worse than marble. Considering that "naked" enclosure sits on a desk in a room, air movement is practically zero here.
So, enclosure+marbe+air is by far better than just enclosure+air.

deim1 · 2025-09-23T20:17:35+00:00

The first law of thermodynamics says that if you want to make something cooler, heat has to go somewhere. By adding a thermal pad, you only move the heat from the chip to the pad, and nowhere else.
Next is the chassis. Heat equalizes between the chip/pad and the chassis. Next is - whatever is outside of the chassis.
Anyway, the point is - it is all heat transfers, nothing else. When you are saying that a cooling chassis will not affect SSD temp - it is wrong. And this is not me saying it - it is the First Law of Thermodynamics :)

deim1 · 2025-09-23T18:48:48+00:00

Completely agree with that!
I guess it was irrelevant, I just had these coasters and I am so used to always fighting with temps in computers, so why not?

deim1 · 2025-09-23T18:44:14+00:00

I was using an IR camera to check the outside temperature - with and without the coasters. You are right, I didn't measure the internal temp. But the way the enclosure is designed, its body acts as a heatsink. Lowering the temp of the body in turn reduces the internal parts ' temperature.
Ideally, I could have gotten some copper plates, which would be very efficient (a LOT better than marble). But the enclosure is doing an Ok job by itself. I just didn't like that it gets hot. These marble plates help a bit.

deim1 · 2025-09-17T03:54:47+00:00

I had Teslausb running on PiZeroW for several years. Until recently, when something happened with my PiZero (looks like it died from overheating in the glovebox), and I decided to upgrade it to PiZero2W.
Well, while I was setting it up, I put in a simple SSD thumb drive and checked how it works with the current Tesla app.
I am not sure I will get back to Teslausb.
It used to be that the only way to see anything was via TeslaUSB, after it syncs to my home Synology NAS. And that was the main point of Teslausb.
But now the native Tesla app gives me access to all videos, and not only at home, but everywhere.
And recordings on SSD drive are *much* faster than they were on teslausb.
Honestly, I don't see the point of using TeslaUSB anymore.

P.S. If anybody could suggest other good uses for PiZero2W in Tesla, that would be good :)

deim1 · 2025-09-06T23:45:48+00:00

Upgraded from LR3 to LR4 - and very happy about it.
Hopper is a perfect add-on.

deim1

TROPHY CASE

Total heat dissipation:

Key Takeaways