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BMW 3-Series (E90 E92) Forum
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DIY: E9X ACC Retrofit
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05-21-2023, 08:05 AM | #507 |
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Thanks man. Can confirm this is correct. It is also quiete obvious as soon as you remove the fusebox.
In my case, fuse 21 was free and fuse 65 was already taken (cabel color was also red-yellow). I cheked the whole internet and it was stated everywhere, that F65 should be LDM Module and nothing else. So I removed the pin and put the pin of the LDM Module into F65. Turns out that I removed power from the gear indicator of my auto transmission (the light beside the P-R-N-D). I now use fuse 64 for the gear indicator. This should be for the OBD 2 Plug but the pin position was free in my case. I also had to modify the F-Bracket for the ACC a little bit since the pre-LCI version is discontinued (I ordered the pre-LCI version and got the LCI version; even though the sticker on the part stated the pre-LCI part number 66316769269, the stamped in part number was the one from the LCI 66316789935; never had something like this before). Everthing works fine for me. Only thing I get is error C998 in BimmerLink (SZL: Error for SZL: LWS error: signal or value below threshold. Wheel tolerance adjustment <-5%: F-CAN Wheel tolerance adjustment, communication with DSC). I don't know if it's an error with the SZL (which I replaced completely) or if it is something else. Maybe I switch back to the old SZL at some point and only replace the cruise control stalk. The error does not come up when I scan the car with ISTA tough. |
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iTudor3.00 |
05-22-2023, 03:00 AM | #508 | |
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anyways I trust more ISTA than BimmerLink, for me it shows sometimes weird faults that are not in ISTA, and everything works fine anyways. |
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05-29-2023, 02:40 PM | #509 | |
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However, I switched back to my old SZL and only replaced the stalk --> no errors anymore. I think the reason for the error was, that I turned the steering wheel sensor of the new/replacement SZL a coule of times in one direction to see if it comes to a stop and to see if it was centered. Since there was no stop, I thought there was no center and I just lined up the arrows on the plastic and slammed it into the car. Maybe the steering angle sensor/disc was off by two or three full turns and I should have turned the disc back to it's original position. |
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06-02-2023, 07:47 AM | #510 |
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Where are you guys finding SZL for ACC? There seem to be very few around, especially for E91 with rear wiper (noting that the stalk can of course be transferred across to my old SZL).
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06-02-2023, 10:46 AM | #511 | |
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I found my entire SZL for 60€ in some french scrapyard, they wouldnt ship to spain, had to ship it to a friend from france, then to spain, but it was worth it. I only used the stalk, installed into my own SZL, since my car is E91 and it was an E90 SZL. The way I found this one, was through google images about ACC stalk, untill reached way down to one that looked like a scrapyard photo, and voila! |
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06-04-2023, 11:48 AM | #512 |
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Thanks! I guess I'd better keep searching then! I have ACC fitted to my second E91 and in both cases I've been using it without the ACC stalk meaning I can't adjust the distance. It otherwise works perfectly without the ACC stalk.
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07-01-2023, 07:28 PM | #514 |
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I have no input on the M3 as far as technicals go. There's an air dam/shroud that will most likely need to be cut along with the lower grille.
I'm still doing my retrofit with an M3 style bumper (lifes gotten in the way oops). Theres some interference with the lower grille as expected. Unfortunately it looks like there will need to be a cutout for the whole unit and not just the spherical portion. The square part appears to be flush if not slightly protruding from the grille mesh. Ugly. With the longer nose of the M3 you might not have to worry about that, I'm not sure
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07-10-2023, 11:24 AM | #515 | |
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08-01-2023, 02:06 PM | #516 | |
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08-27-2023, 05:58 PM | #517 |
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I basically mounted the plate (which holds the ACC sensor) to the F-Bracket with the two bolts that fitted. Then I used a drill to put a hole where the third hole should have been (I think it was exactly at/in the end of the brackets groove). I had to use a nut to mount the plate since there was nothing at the backside of the bracket to put a helicoil or so.
If you are good at welding, you can maybe weld something to the backside of the bracket and put a helicoil. That would be as OEM as it could get nowadays. |
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09-04-2023, 09:00 AM | #518 |
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Hi!
Is there anybody besides me who uses acc with normal cruise control stalk? I tried to code the initial distance(02) but when I set a new value in nettodata ncs gives me errors. I also tried another way, I disassembled the ACC2E90.C47 and set new values (00, 01) and after that I tried to code with the new value. Coding was successfully, but when I go for a test drive and turn on acc it always uses 02 as initial value. |
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09-13-2023, 06:15 AM | #519 |
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Unfotunately I cannot help you, but I would be also interested.
What do you mean when you say you disassembled the ACC2E90.C47? Do you think it would be possible to check the e60 ACC file and look for the code which diables the ACC and enables normal cruise control (in e60 you can hold the distance switch on the stalk for 3 seconds to disable ACC)? |
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09-18-2023, 10:31 AM | #520 | |
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09-18-2023, 07:19 PM | #521 |
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I took the ACC stalk off the original SZL and transplanted it onto my heated steering wheel SZL.
You don’t need to look for one specifically with a rear wiper, just swap it over |
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09-30-2023, 05:22 AM | #522 | |
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I finally managed to source a SZL with ACC stalk, fitted it and coded everything (including VIN in the SZL) but my indicators and wipers didn't work. I'm not sure if it's because the SZL was from an older pre-LCI car, maybe it would have worked with a software update but I didn't try. I instead swapped over the ACC stalk to my existing SZL and all is now working perfectly |
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09-30-2023, 07:01 PM | #523 | |
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I now have all the parts (6cyl DSC, all ACC parts, etc.) to install ACC on my 320d. I also already have an esp32 on my K-can for a different project, adding one to the PT-Can would be easy. Would you be willing to share the relevant (PT-)Can signals you found / are using to make the ACC work? That would save me a lot of time reverse engineering the signals. Would also be more than happy to help look into adding stop and go properly, including potentially adding additional radars/sensors Cheers! |
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09-30-2023, 07:19 PM | #524 | |
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11-12-2023, 09:30 PM | #525 |
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After a long time coming, I've finally completed my ACC retrofit on my '07 E91 323i. A few hiccups along the way but worked through them all with this sites and everyone's advice. So happy its finally done and loving it .
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12-08-2023, 09:28 AM | #527 |
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There was some discussion on this earlier in the thread, and the short answer is no. The hardware is similar (maybe even the same) but the internal software is different and no-one has figured out how to change it between E60 and E90.
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12-09-2023, 08:23 AM | #528 | |
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Was drilling that hole only thing you had to do? Did it fit correctly then? Got pictures? I’m making a custom 66316769270 as one of my sensors mounts are damaged and want to use the 4th one. Then I can compensate for the wrong hole placement of the fastener at the 66316789935. Attaching a picture of the original 66316769270 to the left and the custom one to the right. Very strange that the 66316769270 should fit both LCI and pre-LCI! Last edited by KoktGrus; 12-09-2023 at 11:28 AM.. |
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