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Active Cruise Control (541) activating stop and go

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39K views 65 replies 34 participants last post by  tamcly  
#1 ·
For those who have 541 ACC, I've been able to code full Stop n Go cruise control. You'll be able to have your car completely stop and start again without using the gas and brake. Perfect for when you're in traffic.

F56 series is the only series that uses solely the KAFAS camera to do ACC while the rest of the BMWs use an additional radar system in front.

I've verified this today and it does work. I also have an extra Retrofit set for active cruise control (541) for anyone who's coming from regular cruise control (cruise control with automatic braking, option 544). I retrofitted 541 for my car came with 544 also.

Please PM me for coding details if you have 541 already for stop and go function
 
#6 ·
I have not tried it again, the main reason is SAFETY. It is disabled for a reason! On bmw’s next to the camera the car has a sonar/radar in the front grill to detect objects. I think it is fundamental for the stop&go to work properly. Think of heavy rain, where the visibility of the camera is compromised, it can make mistakes for sure... even if you enable it, i suggest you keep a good eye on the car in front of you and your feed on the break all the time.
 
#7 · (Edited)
It's a paid option on the F56 in Ireland, which uses the same camera hardware without a radar sensor.
I'm more focussed on the Adaptive part, than the stop and go.

It's disabled for economic reasons, but is unfortunately not an option on the Copper SE.
 
#14 ·
Only just seen this, I stopped looking into it as some people were very dismissive of the idea on Facebook, something to do with the algorithms being impossible. I'll let somebody braver than I be the guinea pig :)
 
#11 ·
dekota28 said:
To activate full stop and go active cruise control you'll need e-sys pro to edit the cafd files for the SAS and DSC modules.


DSC2:
C_Funktion_AccStopAndGo_aktiv_I - aktiv

SAS:
LDM_Fahrfunktion - ACC_SnG

*SAS: optional for automatic start after full stop:
LDM_Automatisches_Losfahren - automatisches Losfahren

PM me if you have any questions.a
Click to expand...
Why is the last fdl optional? What does it do?
 
#12 ·
I just have to receive a Sidewalk Cabrio with 544 option from factory in a few days and I am interested on this retrofit but I am a bit confused as with 541 steerling wheel have 2 extra buttoms to controlate the distance from next car,

If retrofit is only codification, how can you adjust the distance?
70684
70683
 
#13 ·
I code it to have a fixed distance. There are 4 levels or distances outlined in the coding. Mine is set defaulted to the closest following distance with the car in front of me.
You can also buy just the button parts on ebay. I've seen them but very rare.

Prerequisites for 541 are kafas camera (LCI Builds have this standard), SAS optional module, and wiring between SAS, BDC, and KAFAS and of course coding.

The last coding is optional and I believe it refers to the MSA function in your car where the engine will shutoff to conserve petrol. As long as you don't have the auto start stop switch off of course. I personally have coded my car never to execute this function so it's not relevant in my case.

Also I've verified that stop and go works even in sports and manual sports mode (shifter to the side)

When you come to a complete stop the system will be ready to resume unless you're at a stop for longer than about 5 seconds where the system will time out. If you want to resume however, you can simply press the resume button on your standard cruise control cluster to the left hand side of your steering wheel.

This is a little trick I've learned. Also I am in the final testing stages of traffic jam assist with stop and go where the car will steer for you up to 35 kmh in traffic. No
Image
 
#15 ·
EDIT: i should have read your msg better, it is just what you wrote haha [emoji3]

There is also a “mod” which enables the car to drive itself, so steer itself on lower speeds, it requires an electrical mon in the steering wheel. I read it somewhere, cant seem to find the topic anymore. Like in traffic jams the car drives, steers all byitself. Someone tried the mod on his mini f54 and it worked. Only there was no “logo” icon showing that the function was on. Maybe it is present on the new virtual kombi...
 
N
#18 ·
I was searching around the internet about retrofitting the ACC to an F56 mini which has S544 as delivers option. I finally found your discussion in the MiniF56.com community about it.

Do I get it correct:
The ACC can be coded, if S544 is already installed? I assume, that at least a different steering wheel is needed to have the control buttons, right? Or is any other hardware needed to make this work?

Background of my question:
After 8 month of wait, our electric mini was delivered but the ordered ACC wasn't installed! I would like to know, if the dealer can retrofit it as I've not finally decided to take the car or not.
 
#21 ·
Northbuddy said:
I was searching around the internet about retrofitting the ACC to an F56 mini which has S544 as delivers option. I finally found your discussion in the MiniF56.com community about it.

Do I get it correct:
The ACC can be coded, if S544 is already installed? I assume, that at least a different steering wheel is needed to have the control buttons, right? Or is any other hardware needed to make this work?

Background of my question:
After 8 month of wait, our electric mini was delivered but the ordered ACC wasn't installed! I would like to know, if the dealer can retrofit it as I've not finally decided to take the car or not.
Click to expand...
It also needs SAS module along with KAFAS2 (5AS or 5AC) due to the fact that it’s solely camera based.
 
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#24 · (Edited)
Image
Found interesting thing ! I dont have button to regulate cruise distance so i decided to remove plastic and i see that physically there is buttons on pcb
Image



i tried to ride and check but buttons are not working , i think that there is some difference in HW beetween pcb's with and w/o cruise buttons , so if someone can make foto of pcb with factory cruise buttons i will be very happy ))
 
#26 ·
The main circuitry for the 2 extra distance buttons are there but the circuitry to activate that section of the circuitry aka the pins to the board where it would begin. Aren't there. They probably include the circuitry for manufacturing purposes. It's much cheaper by not interrupting their work flow process to change jigs mid board for those made without acc.
 
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#27 · (Edited)
I'm looking to purchase a 2015 J56 JCW with ACC, and was wondering if you think enabling the Stop & Go feature on this would work? I tried to PM you, but I'm not yet able to as I'm new to the forum. Thanks in advance for anyones help!

Would also appreciate a pm from @dekota28 when you have time, would love to talk to you about the 'traffic jam assist' steering + that arduino setup you posted a picture of a while ago.
 
#39 ·
Hello, I came across this discussion and I hope someone can help me. A couple weeks ago, I received the 2022 Mini Cooper S Iconic that I ordered from the factory. It is supposed to have every option. It arrived as ordered with the exception of "dynamic" cruise control. It does have "active" cruise control however. (I believe that's option 544 ACC) It has everything else, shaker steering wheel warning for lane departure, speed limit sign recognition, auto parallel parking, and ACC. (it applies brakes going down hill) Because of supply chain problems and chip shortages, I am assuming the 541 cruise control was turned off because they didn't have the right steering wheel. It's the only logical conclusion I can come up with. (The 2 buttons next to the cruise control are missing.) The salesperson said I may not get all the options because of current supply and chip issues. (I am glad I got everything else I wanted)

Per the discussion I've read on this MINIF56 message board, I believe the 541 ACC option with stop and go can be turned on via programming and a default distance can be programmed in and the buttons won't be needed. (Although above, I see maybe I can find that steering wheel piece with the extra buttons?)

Please let me know if you think this is correct and, if so, please let me know how to do this. Thank you!
 
T
#41 ·
Hey! I have just read your message about 541.. you seem to have big knowledge on these upgrades! Could you send me the instructions on how to to this? I do have 544 on my FA, and ready to upgrade my steering wheel with the 2 extra buttons. I am going to upgrade a wheel with paddles shifters anyway, so I guess I should buy one with the 2x extra buttons for ACC? I have esys and I already retrofitted driving modes 4VA and it does work. My mini is F56 from 2014 and I am in France.
 
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