Disable Adaptive cruise control

richard131 · #1

I have a 2023 Cayenne which happened to have ACC as an option. I have found the ACC to be unreliable and a nuisance. Has anyone been able to get their dealer to disable this feature so it functions like standard cruise control. I know this is possible on other cars such as GM, Acura and even VW. My dealer in Tx doesn’t even call me back when I ask about it. Any ideas would be appreciated.

blueline · #2

richard131 wrote: Mon Jul 31, 2023 8:27 pm I have a 2023 Cayenne which happened to have ACC as an option. I have found the ACC to be unreliable and a nuisance. Has anyone been able to get their dealer to disable this feature so it functions like standard cruise control. I know this is possible on other cars such as GM, Acura and even VW. My dealer in Tx doesn’t even call me back when I ask about it. Any ideas would be appreciated.

First of all, welcome to Carpokes!

My quick answer is that I don't think so. I'm about 99% sure of that because it's tied in to a number of systems and, as you'll eventually find out, will greatly increase the cost of an alignment as it's an integral part of that too.

However, I don't know for sure and since I'll be at my dealer tomorrow and will be talking to the lead tech, I'll ask. He'll know as well as anyone so I'll find out if my guessed answer is correct.

I am curious what you don't like about ACC - if I know before I go tomorrow, maybe I can get an answer as to what might be wrong. I certainly don't know anything about the system because we've never used ACC in our Cayenne Turbo. I personally have zero use for any kind of cruise control and my wife is the same way, so it's never been engaged since new.

richard131 · #3

Thank you, , the ACC slows the car too much and makes it difficult to pass. I have that option on my 911 as well but I guess I have never used cruise control on it. Thanks again.

blueline · #4

richard131 wrote: Mon Jul 31, 2023 9:25 pm Thank you, , the ACC slows the car too much and makes it difficult to pass. I have that option on my 911 as well but I guess I have never used cruise control on it. Thanks again.

You're most welcome.

Your description explains it - too much nanny built into the system. To many suits, bureaucrats and lawyers (sorry Tom!) all wanting to assert their desired protections into the system to make sure nothing bad happens. (By the way, they don't want you passing anyone...lol)

That kind of intrusion would drive me nuts, so I don't blame you for wanting a more traditional type of CC if it's something you or others in your family like to use. ACC is on my 992 TTS too but, same as you, I've never used it there either.

I did try the "Wet" option on the Turbo S and could not believe how de-tuned everything was. Docile and unresponsive is an understatement. Horrid is a better description, at least as far as I was concerned.

Anyway, I'll find out more tomorrow and will get back to you afterwards. Hopefully, I'm wrong and the ACC can be de-fanged a bit.

blueline · #5

@richard131

As I suspected, there appears to be no way to convert ACC to plain CC, at least not through anyone connected with Porsche. The lead tech was close to 100% on that thought, although he said no one had ever asked before so it wasn't anything he'd looked for. I imagine that attempted alterations involving automated driving assists would be heavily frowned upon.

But I also seriously doubt it's doable via a dark alley hack either. I was reading a bit about ACC in the owner's manual and it is seemingly inextricably tied to not only the emergency stop function but also ALK (Active Lane Keep), LKA (Lane Keep Assist) and PID (Porsche InnoDrive). Altering anything backdoor could cause multiple errors and failures.

You can do small things such as adjust the desired distance between cars you're approaching before ACC kicks in and, of course, your chosen speed. Fortunately, you can keep ACC completely turned off, at least for now. (I worry that gov bureaucrats will make a system like that mandatory before we know it. Nannyville on steroids.)

The GM had a long-shot thought that there might be a way via a PCM setting to reduce ACC's intrusions to something more akin to plain CC, but he said that was a guess as he's never looked for it. (I don't think the option exists and honestly, neither did he.) I'm also pretty sure that he's driving a '24 Cayenne and if so, the software platform and many other things are different from our 9Y0 models. However, he mentioned that he was going to experiment to see if any different settings were available.

The bottom line appears to be that Porsche doesn't want their integrated automated sensor control systems altered in any way. However, maybe someone else will know of a way. Good luck!

Meanwhile, get yourself one of these - I can assure you that there is no ACC! (This was mine for a few years. Was too much work and angst to drive so it sat! Lol.)

: 1967 Kaiser M35A2.jpg (6.29 MiB) Viewed 2421 times

richard131 · #6

Thanks so much for your help, That is what I suspected. It is interesting that some manufacturers have a disable feature including some VWs. At least I know to try and find one without that option in the future. I am sure more and more tech like this will come to more cars.

Also thanks for the great site. Looking forward to following more discussions

blueline · #7

You're welcome Richard - great to have you onboard!