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(Dead Project) E90 ACC Stop + Go Development Thread
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04-19-2019, 08:05 PM | #1 |
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(Dead Project) E90 ACC Stop + Go Development Thread
Project goal: Drive to the beach without touching the gas or the brake.
Thanks to everyone who voted on my summer project thread. I was going to do the soft close door retrofit but the deal I had lined up for the parts fell through and I found another deal on the parts for this retrofit. It is such a tragedy that my current ACC retrofit only goes down to 20 miles an hour and I have to use actual force to press the brake pedal down. Then, when I am on the motorway even on the shortest following distance setting does not tailgate the person in front of me like a true BMW driver. Hopefully this new system will tailgate like a proper BMW driver. Current unknowns:
Parts List:
Functional Description Wiring Diagram Sensor dimensions: 12x8.5x4 CM Instead of the ACC sensor getting PT can like the E90 ACC the S+G sensor gets special S can from the new LDM. My current plan is to plastic weld the E70 ACC trim to my pre lci E90 lower front grill. I believe the sensor needs a nice thin plastic trim over the sensor to protect it from road damage. For the actual mounting bracket I want to use a F30 ACC bracket and center mount it in between the crash bar and a lower plastic bracket. I have no idea if this will work but it is worth the try. This is a video of the two sensor S+G on Mr.Perfekt's E63: This is a video of the current one sensor S+G on the new X5: Last edited by Nickco43; 04-29-2019 at 06:55 PM.. |
04-19-2019, 10:32 PM | #2 |
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Why bother? Just move your foot....you lazy person.
^ that's what some people will say, so there; I got it out of your system... now lets watch the magic happen ![]() Following... |
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04-24-2019, 08:48 PM | #4 |
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Today the E70 acc trim and F30 acc bracket came in. I currently am in the process of making a custom trim for the ACC S+G in the E90. The F30 bracket looks like it will work but I will not know until I get the bumper off. It is going to be a huge challenge getting the bracket mounted perfectly straight. I do not think there is too much of a margin of error on that.
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04-29-2019, 06:55 PM | #6 |
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I plugged in the E70 LDM and sensor today. The LDM flipped out that it did not see a E70 DSC. This is officially a dead project.
I guess it is time to do soft close doors. |
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06-14-2020, 06:46 PM | #8 | |
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With rear-wheel drive e90, this LDM e70 module should not work there completely different DSC. But with the all-wheel drive E90 it is theoretically possible, they have the same DSC, DSC 8Plus as on the E60 / 63 all-wheel drive, they were put on an active cruise stop end go, another generation, but still, there is a chance. Lay out photos of the insides of LDM from E70 |
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06-15-2020, 03:54 PM | #9 | |
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06-15-2020, 05:09 PM | #10 |
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I was also interested in this topic, why e9x deprived of this functionality (cruise stop & go)
I would try it myself, but I don’t have (hardware), a unit from (LDM e7x or a 2nd generation ACC2 radar, on the e60 / 63 car there is no separate LDM unit, it is built into the ACC2 radar), Those who live in the United States, they are very lucky, there is (junk yard) where you can find these blocks for symbolic money, in my region a needle in a haystack is easier to find, it's that kind of lyrics. To test my theory, if anyone has a block, you need to connect the LDM (e7x or ACC2 e6x radar) to e9x and read the car, BMW Inpa, see if LDM or ACC2 sees the installed DSC (DX 8plus) if any of the LDM blocks or radar ACC2 will see factory DSC 8plus E9x only (x-drive) that half a way is passed. If we read how the E7x ACC and circuits are arranged, we see that the LDM (longitudinal dynamics control module) communicates a lot with anything (ACSM pillows, DSC abs, FRM module in the footwell, JBE distribution box, SLZ levers) and plus many more signals receives from other units (lights, doors, belts, etc.), but this is already through JBE and FRM. |
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06-15-2020, 06:19 PM | #11 | |
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09-14-2020, 12:10 AM | #12 |
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Was this confirmed that the hardware is the same for similar drivetrains?
Also, it may be that DSC has different software, which would need to be flashed (not coded), for the system to recognize it. I think flashing is done using winkfp. Just throwing it this out there - maybe someone will confirm. |
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10-12-2020, 03:22 PM | #14 |
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Nickco43
Any developments in S+G for xDrive E90s? It makes sense the DSC module in xDrive can control throttle and brake much better at lower speeds (such as the xDrive-exclusive HDC button/feature). I'm in love with the idea of retrofitting ACC to my car, but honestly, mind as well go all-in and get ACC2 w S+G. By the way, I hope you know how much we appreciate what you bring to this community. |
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03-17-2022, 05:48 AM | #15 | |
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Drives: 2010 BMW 320i E92
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Your idea of emulator works in my 4-cyl E92. Please refer to https://www.e90post.com/forums/showt...t=acc+retrofit |
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04-26-2022, 11:45 AM | #16 |
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i got all the parts for this retrofit if anyone interested pm me with a decent offer, i will post it for sale sometime this week, i have the acc sensor with wiring harness, the module, the whole steering column, mounting bracket and all the bolts, i changed my mind in doing this dont want to block my badass intercooler view😂
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08-28-2023, 06:40 AM | #17 | |
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But didn't do anything with it yet. My idea is to put in a DSC8+ from e84 in it. |
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12-06-2023, 07:59 PM | #18 |
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01-03-2025, 11:43 PM | #19 |
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Old thread, but useful information. For the E90, get an E90 LDM even though they look the same as E70 LDMs.
I recently completed this retrofit to my 2011 E70. It required matching ACC DSC, LDM, and FRR from an E70. I initially installed a 2008 E60 ACC DXC with E70 LDM and FRR and it didn't work for me. It kept acting weird, like windshield wipers were always on. I didn't try to crossflash the DXC ECU. I think in the E70, the E70 LDM and FRR are configured to work with only an E70 ACC DSC. The LDM in the E70 only functions for the ACC system. I tried the original non-ACC DSC either with original hydroblock or E60 ACC DXC hydroblock and I kept getting DSC signal invalid module faults. With E60 ACC hydroblock I kept getting intermittent missing pressure sensor faults. For the signal invalid faults, Ista+ mentions that one of the partner modules, i.e. the LDM, generates the faults that get stored in the DSC. Once I installed an ACC DSC from a E70 to match the E70 LDM and FRR, Ista+ required steering angle calibration and LDM calibration. The RDC also got reset in the process. Then all the faults went away. |
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acc, acc stop + go, bmw won't like this, e70, e90, retrofit |
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