"Tuning" of other control units

Hi,

Thanks to buses and Flash, a lot (theoretically) is now possible.
Unfortunately, the manufacturers are not interested in doing that...

Is it feasible, with a reasonable amount of effort, to "chip" other ECUs (Engine Control Units) besides the one controlling the engine, in order to modify or supplement their behavior?

At the top of my list, I would have "adaptive lighting" for my Xenons ( " color="red">Bitte keine Links zu externen Dateihostern! a) nerven die zusätzlich notwendigen Klicks, b) Wartezeit, Werbebanner/Werbepopups und notwendige Registrierungen, c) ist nach einiger Zeit die Datei weg und das Thema für andere Leser nutzlos!

Bitte nutze 'Attachment hinzufügen' bzw. das Upload Forum hier.

"In new cars, a large number of software settings can be modified, or a whole range of adjustments can be made. There are channels where people discuss these possibilities, showing what could be changed, but only those directly involved know the full extent of what's possible."

As far as I know, it is possible to be "geflasht". 01/02/03/09/17/25/37/61/56/.....
There are often promotions, such as for the Audi S5, where software updates are made available, supposedly to improve certain aspects of the vehicle.
Nur wird es ohne gute Programmierkenntnisse wohl kaum Möglich sein, zb. seine eigenes wunschkennfeld beim Automatikgetriebe selber zu schreiben.

Ansonsten hätte ich vielleicht meinen A6 Quattro mit Tiptronik noch.
It's simply outrageous how the WK is controlled in that car .

I understand that Audi and VW are capable of flashing software.

The question was more about whether the general level of expertise in reverse engineering other types of control units has progressed as much as it has for engine control units.

It's unlikely that a vehicle network control unit can be much more than an enhanced AVR with a few power amplifier stages.

m;

And what is the purpose of this, and more importantly: who is going to pay for it?

Rainer K. wrote:

wer soll das bezahlen?

That's exactly the point. Many things are certainly possible, but ultimately, it requires a great deal of knowledge, motivation, or a lot of money – ideally, all of those things combined. With an engine control unit (ECU), you have a large target audience that is also willing to pay accordingly. With a comfort control unit, however, the interest is exponentially lower.

dieslmartin wrote:

Die Frage zielte eher darauf ab, ob die Allgemeinheit beim Reverse-Enginee en anderer Steuergeraete auch schon so weit ist wie bei Motorsteuergeraeten.

No, she is not.

More and more often, OEM chips are being used, or chips that already have the flash memory integrated. It's difficult to get information about these – meaning there's very little readily available documentation. It would be easier and cheaper to develop the entire thing from scratch. Everyone has an engine control unit (ECU), and almost everyone wants tuning. However, the situation is completely different with other ECUs. Therefore, the effort involved cannot be justified from an economic point of view.

On the other hand, using the FIS (I'm just using VAG terminology here) by inserting a microcontroller board into the bus systems is incredibly easy. And even here, you need not only relevant expertise but also need to spend several weeks or months debugging to "earn" the necessary information.

In my opinion, the latter remains the only acceptable approach.

Axel.