[vilord]

Originally Posted by pmorg4

How are you getting access to NewTIS? It's showing as site closed for me.

Try to register or shoot them a message. Gotta be logged in as a DIYer.

[bms5]

I’m just completing my E90 335d ACC retrofit and I have an almost identical issue.
Did you resolve yours, Nefer?

I wrote the VIN to my LDM and updated the software with WinKFP. The first flash attempt showed error codes when complete (Error in EDIABAS or ECU description file). The second attempt seemed to complete and now the VIN shows in UIF but I have a permanent error code, 62CD Control unit, coding data, coding successful (which sounds really odd).
I also now have an error in my ACC radar unit (after LDM programming??) of CD40 undefined fault code. ISTA is no help with diagnosis, either.
I been afraid of flashing the ACC unit which doesn’t appear to have any later software available so all I would accomplish is writing the VIN to it.

My cruise control also simply shows an error on the Kombi when I try to activate it.

Any help is GREATLY appreciated.

Originally Posted by Nefer

Greetings to a group of seriously smart individuals! I'm amazed with what could possibly be done with our BMW cars.
Hope I could get some help from the ACC retrofit masters out here.
I'm almost through with this retrofit on my e82 135i 2011 but I'm stuck at what I think is the very last step.
Here's the list of things I did so far:
1. Coded $541 to VO and FA_Write to CAS and NFRM with no issue, now ACC and LDM are showing up in ISTA, INPA
1. ACC radar installed and wired, VIN changed and flashed, no errors with coding in NCSexpert or ISTA
2. Column switch cluster installed and coded, no errors from DSC, all CC lever movements are recognized when triggered
3. High kombi from 335i installed and coded to proper VIN, no errors in ISTA, all lights pass the K-test, cruise mark active as well
4. DSC, Kombi, ACC, CIC, CID and even CAS, NFRM (just in case) SG_Codiren with empty MAN file to default setting
5. Finally - LDM module wired and flashed with WinKFP to latest sotware and VIN, however it is the only module that shows an error in ISTA. Error code reads: LDM module coding successful... fault code present - yes.
When UIF/AIF of LDM checked with WinKFP shows mileage as 0 km - weird.
Not able to do any coding with NCSexpert as it is not in the list of modules.
I bought another LDM to double check - same exact issue with the new one.

When starting up - the radar car indicator in kombi turns red, to yellow and disappears. I guess kombi check is passed.
When cruise control on/off button is pressed there's either a brake pedal symbol showing up (Dynamic cruise control kombi type coded) or nothing (ACC kombi type coded). Pushing CC lever up, down, forward, backwards does nothing. And finally when CC lever is pushed or pulled all the way I get the Cruise Control Malfunction error! If clears out after car goes into sleep, no trace of what caused it in ISTA.

I suspect there's an issue with coding but after spending long evenings trying to do the same thing over and over again I need a fresh pair of eyes. I know ACC was not even an option for e82, but 6-cylinder e87 in TIS clearly indicate the radar and DSC module fitted is the same on e9x. Someone has successfully retro'd $544 Dynamic cruise on e82 135i so it is just an extra step to get ACC.

I'd appreciate you please share your thoughts on what could possibly be wrong here

[unrulyteach]

Originally Posted by bms5

I'm just completing my E90 335d ACC retrofit and I have an almost identical issue.
Did you resolve yours, Nefer?

I wrote the VIN to my LDM and updated the software with WinKFP. The first flash attempt showed error codes when complete (Error in EDIABAS or ECU description file). The second attempt seemed to complete and now the VIN shows in UIF but I have a permanent error code, 62CD Control unit, coding data, coding successful (which sounds really odd).
I also now have an error in my ACC radar unit (after LDM programming??) of CD40 undefined fault code. ISTA is no help with diagnosis, either.
I been afraid of flashing the ACC unit which doesn't appear to have any later software available so all I would accomplish is writing the VIN to it.

My cruise control also simply shows an error on the Kombi when I try to activate it.

Any help is GREATLY appreciated.

Try default coding

[bms5]

Originally Posted by unrulyteach

Try default coding

Using Factory Coding profile in NCS Expert and then using FA write is what I’ve done to tell the modules what they need to do and what other modules to communicate with.

Isn’t that Default Coding or am I misunderstanding the process?

[unrulyteach]

Originally Posted by bms5

Using Factory Coding profile in NCS Expert and then using FA write is what I’ve done to tell the modules what they need to do and what other modules to communicate with.

Isn’t that Default Coding or am I misunderstanding the process?

Yea that's pretty much it

[bms5]

My error was assuming that VO coding a module was achieved what default coding accomplished. WRONG! Once I default coded the LDM and ACC modules, my fault codes disappeared. To clarify I did write my VIN to the LDM but did NOT write the VIN to the ACC unit. That appears to be no problem.

Now just a test drive needed to verify function of the system��

[cheerio]

Just started my ACC retrofit today, on a LCI E90.

I was a bit confused when the lower grille trim piece didn’t fit - turns out the bumper needs to be cut on non-M-Sport cars.

Just for reference, there’s a cutting guide mark moulded into the bumper, on the non painted side (similar to the markings for the PDC holes). Just cut that out with a Dremel and the trim will fit. The cut edge should be mostly hidden by the ACC sensor cover when installed.

Interestingly, there’s no separate part number listed on RealOEM for a pre-cut bumper, despite there being separate parts listed for pre-cut PDC and headlight washer holes.

I think this cutout isn’t required on the M-Sport bumper, because the lower grille sticks out further on that. The cutout is to make clearance for the radar connector.

[Aus335iguy]

Has anybody managed to get stop go working on e9x hardware ?

[cheerio]

Originally Posted by Aus335iguy

Has anybody managed to get stop go working on e9x hardware ?

Read the thread. Someone has done it on their 320d (!), but IIRC they had to make their own custom LDM.

[bms5]

Originally Posted by cheerio

Just started my ACC retrofit today, on a LCI E90.

I was a bit confused when the lower grille trim piece didn’t fit - turns out the bumper needs to be cut on non-M-Sport cars.

Just for reference, there’s a cutting guide mark moulded into the bumper, on the non painted side (similar to the markings for the PDC holes). Just cut that out with a Dremel and the trim will fit. The cut edge should be mostly hidden by the ACC sensor cover when installed.

Interestingly, there’s no separate part number listed on RealOEM for a pre-cut bumper, despite there being separate parts listed for pre-cut PDC and headlight washer holes.

I think this cutout isn’t required on the M-Sport bumper, because the lower grille sticks out further on that. The cutout is to make clearance for the radar connector.

Here is a post showing some detail on what you are referring to. I had to do it on my LCI 335d non M-Sport as well.
https://www.e90post.com/forums/showp...&postcount=316

[EdgaBMW]

Hi,

someone knows is it possible to code default distance? Because now when you activate acc it shows 3 stalks, wan't to be 1 stalk (min distance by default)

Thanks

[unrulyteach]

Originally Posted by EdgaBMW

Hi,

someone knows is it possible to code default distance? Because now when you activate acc it shows 3 stalks, wan't to be 1 stalk (min distance by default)

Thanks

No it's at max distance by default

[københavneren]

Since i still got the ordinary cruise control arm, i tried to code the default distance.
It is actually possible to both change the default distance and minimum speed in the acc module.
But the problem is you can't save the settings to the ACC, since the ACC module doesn't support NETTODAT coding.

But however you can edit the minimum speed in the LDM module.
The lowest minimum speed before acc module gives an error is
20km/h
That's a lot better than the standard 30kn/h

[sono0312]

Originally Posted by københavneren

Since i still got the ordinary cruise control arm, i tried to code the default distance.
It is actually possible to both change the default distance and minimum speed in the acc module.
But the problem is you can't save the settings to the ACC, since the ACC module doesn't support NETTODAT coding.

But however you can edit the minimum speed in the LDM module.
The lowest minimum speed before acc module gives an error is
20km/h
That's a lot better than the standard 30kn/h

Hello,
you mean you changed a parameter which is related to the minimum speed setting in LDM?
I found the related parameter called "V_WUNSCH_KMH_MIN" for the km/h. The current setting is wert_01 which is equal to 0x1E (30km/h). Did you change it to 0x14 (20km/h)?

[sono0312]

Originally Posted by bms5

Here is a post showing some detail on what you are referring to. I had to do it on my LCI 335d non M-Sport as well.
https://www.e90post.com/forums/showp...&postcount=316

yes, updated the info. pls refer to the link above.

[pmorg4]

Does anyone know the size of the socket needed to turn the adjustment screws on the ACC sensors? It looks like a hex head, but the smallest socket I have is 4mm and that's too big. It looks like 2 or 2.5mm and I've never seen a hex head so small.

[sono0312]

Originally Posted by pmorg4

Does anyone know the size of the socket needed to turn the adjustment screws on the ACC sensors? It looks like a hex head, but the smallest socket I have is 4mm and that's too big. It looks like 2 or 2.5mm and I've never seen a hex head so small.

I bought this for the adjustment. what it called 'uxcell 3.5mm Non-Magnetic Tip Six Point Hex Nut Driver with 3-Inch Round Shaft'.
https://cdn-ak.f.st-hatena.com/image...1221090441.jpg

[pmorg4]

Thanks, so it's 3.5mm. I'll see if I can find one locally in the UK.

[djt81185]

I wonder how hard it would be to code stop and go on a car that has the acc from the factory. Would the sniffer setup still be needed?

[pmorg4]

Originally Posted by djt81185

I wonder how hard it would be to code stop and go on a car that has the acc from the factory. Would the sniffer setup still be needed?

In short, it would be very hard. The radar is not designed for short distance/low speed sensing, so the system does not support anything below around 20 km/h even through coding. Read through the thread, with some very extensive work around CAN bus sniffing and injecting etc almost anything can be done.

[scroller]

Thank you too both of you aeroshurik and to hupchye

ps: I still have something to learn more, but this is just the beginning/ E90 320I

[pmorg4]

Originally Posted by sono0312

I bought this for the adjustment. what it called 'uxcell 3.5mm Non-Magnetic Tip Six Point Hex Nut Driver with 3-Inch Round Shaft'.
https://cdn-ak.f.st-hatena.com/image...1221090441.jpg

Just following up on this, I can confirm that my adjustment screw is indeed 3.5mm. Being that it's such a small size, I figured that it's important to buy a good quality screwdriver to ensure a good fit to avoid rounding the head on the screws. I'd also recommend spraying the threads with some kind of releasing agent where it meets the bracket (I used Plus Gas, not sure how widely available this is) as mine were a bit reluctant to turn.

I was pleased (and surprised) to find that Amazon sell a Wera 3.5mm screwdriver for less than £7 and on Prime so next day delivery. As most of you will know, Wera tools are very good quality, so if you're in the UK and need to adjust your ACC sensor I'd highly recommend getting this.

https://www.amazon.co.uk/Wera-Kraftf.../dp/B0001P17JW

My ACC is now working happily (at 3 bars distance, as I don't have the ACC stalk to adjust it). I'm going to try driving it for a while at 3 bars and maybe adjust the default via coding to 2. I'll then decide whether to look for an ACC stalk, as they seem to rarely come up and then often at a very high price. It might turn out that I don't really need to adjust it once I decide on a setting I'm happy with.