Disable ESP

Hello,

First of all, it's great that this forum is back .



I'm having the following problem.
I would like to build an adapter that can be directly connected to the vehicle's internal CAN bus and which effectively deactivates the ESP, as if the ESP button were pressed. More precisely, the system should function in a way that the ESP is deactivated when driving below 30 km/h and reactivated when driving above 30 km/h.

Does anyone have experience with this and could possibly help me? If so, please contact me.


Thank you in advance!!!!


Best regards,
SPACE

Hey, what are you up to ?
It's questionable whether there's even a message that can disable the ESP. I am not aware of any.
The ESP button is directly connected to the ABS control unit, which includes this function.

Well, what do you mean by 'directly connected to the power supply'? The ESP (Electronic Stability Program) is essentially a component of the ABS (Anti-lock Braking System).

And the switch must connect to some control unit, and within that unit, it probably connects to the controller, and so on.

That would be enough for now.

Currently, I'm using the button near the ignition to turn off ESP. The idea is that someone should be able to access that button and it should be accessible within the internal CAN bus. However, the problem with my method is that it always turns off the system, meaning things like the cruise control are deactivated during that time, which can be annoying. It would be great if it could somehow connect to the speedometer signals, analyze the data, and then send a message to a button to turn on or off when the speed exceeds or falls below 30.

Okay, the button connects to a control unit, and that control unit is specifically the ABS/ESP control unit.
There's no communication happening via CAN bus.
The control unit itself is operated using the analog button.

The approach of checking the speed and then, for example, using a relay to 'activate' the ESP button would be conceivable.
You need to tap both the contact point itself and the indicator light.
Perhaps a Telegram message will also be sent when deactivating, which can be used as a trigger.

The matter isn't quite as trivial as it seems.

Best regards,
Markus.

Let's first decide what kind of car we're even talking about.
After that, the question is whether an analog signal goes directly from the switch to the ABS system, or if it takes a route through a control unit.

Okay, Space: What a car.

And would you like to explain the background of your project in more detail, or is that not yet for the public ?
Sure, here's the translation:

'LG' translates to 'Best regards' or 'Sincerely' in English.

For most current Audi models, I know that the ESP button, as Maxx mentioned, is simply a button that sends a signal to the ABS control unit to disable the ESP. The button does not have a CAN bus connection. It's likely that many other vehicles from the VAG Group will look the same.

I don't know how other manufacturers might approach this – I don't have any further information on that.

Hi,
It's probably easiest to bypass the ESP button using a relay. This way, you can at least disable functions that the manufacturer intended to be controlled through the ESP system, such as ASR. Furthermore, this allows you to reactivate certain functions at higher speeds.
I doubt it's worth going to a specialist just for the speed reading, as you can easily retrieve that information via the OBD port.

I can definitely imagine 'disabling' the ESP (I've even managed to do it during testing), but it would be interesting to selectively disable only certain parts of the ESP while keeping other functions like ABS running.

Sebastian.

Hi,

Wow, that's quite a few responses...


Okay, it's about a 221. The ESP switch should also be connected to the CAN bus within the vehicle's interior, which in turn is dependent on another control unit.

It's enough that it's set to a maximum of 30 (km/h), meaning that the ESP switch is pressed in digital form, and as soon as the car exceeds 30 km/h, it reactivates, restoring various comfort functions such as... Cruise control.

It shouldn't be assumed that anyone else needs to take responsibility if something happens; I have to bear the responsibility for that. :D

I can't really say what I need it for...


I hope someone can give me some thought-provoking ideas...

space, I'm sorry, but to me, everything you're writing sounds like you have absolutely no idea what you're talking about.
Please read the posts in this thread; all the answers are already there.

For me, it's only 'childish' when someone can't explain why they want the ESP to be active up to 30 km/h.
Okay, from my perspective, you should always floor it and spin your tires until you reach the next traffic light.

How much are you actually willing to spend to solve the problem? A menu at McDonald's?

Hello,

@joeausro If that's what you mean, then you're probably right that I have no idea what I'm talking about... Think before you speak!



Please provide the German text you would like me to translate into English.


Okay, I think some people misunderstood me. The ESP should be deactivated in the same way as the original system. (With the original system, you press a button to disable the ESP). I now have a circuit board that immediately deactivates the ESP when the car is started, but this comes with several disadvantages. One of them is that you can't use the cruise control when the ESP is deactivated, and the other is the warning light that comes on in the instrument cluster. There are still a few other functions that are disabled.

What's the point of that? No, I'm not driving around with screeching tires from traffic light to traffic light, I'm past that phase. No, there are a few cars that don't need it, or where the ESP function partially hinders driving, but I simply don't want to say which ones and where exactly it's needed, because some projects shouldn't be immediately made public.
If someone is able to help me further, they will eventually need to understand the background information.

My experience with CAN Bus is not very extensive, so I need some help with it. If someone gives me instructions on how to build a circuit board, I can usually follow them. However, I struggle with understanding how to extract information and filter out the things I need. It would be great if someone would be willing to help me and perhaps assist with my problems.

Disadvantages: You cannot use the cruise control if the ESP is deactivated, and the other issue is the warning light in the instrument cluster. There are still a few other functions that are disabled.

and you want it reactivated starting at 30. And now you're seriously telling us that you use the cruise control up to 30 km/h?

My experience with CAN Bus is not very extensive, which means I need help with it. If someone gives me plans on how to build a circuit board, I can manage that, but I can't figure out how to extract information and filter it down to the things I need, and it would be nice if someone was willing to help me and perhaps assist with my problems.
In short, you can't do anything and yet you want everything.

Again: how much is it worth to you that someone tries to help you with your problem and seeks a solution?

respectively:D, a project is illegal - because it interferes with vehicle handling and disables important functions.

Hello Joe,


How about you stop responding, at least to me?

Who is illegally interfering? If a car already has a button to disable the ESP (Electronic Stability Program), why can't it be disabled automatically?It's probably worth a lot to me.

Best regards.

Okay guys, I think we're going to get back to the technical aspects .

Okay guys, no fighting.
But Space, look... for people who are reading this from the outside, it's really quite strange.

What kind of car is it? Did I really miss that information after reading it three times? You write:
So, it's about a 221.

what is that?

And now, about the cruise control:
For many cars, the cruise control system doesn't activate until speeds of around 30 km/h. So, your reasoning is also questionable.

Without basic information (like which car), there's nothing I can do.
Previously, the signal was sent to the ABS system in an analog format.
In newer systems, this is sometimes connected to the vehicle's control unit, and then potentially transmitted further via CAN bus.

I don't think automation is entirely legal, but that's something you need to figure out.

And regarding the question of what it would be worth to you to provide the answer:
What it's worth to me, maybe a lot. is also not helpful.

I think you really want a lot. And if someone doesn't happen to want exactly that thing, they won't spend hours on it and develop it for you. I'm sure you understand.

Okay, please provide some more factual answers. And you shouldn't reveal what it's for. You probably even intend to sell it... I don't know. But if you do, you really can't expect someone to help you with everything for free.

Best regards.
Patrick.

@candev

What kind of controllers do you use?