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      05-04-2015, 01:57 PM   #1
bmwx6me
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BMW X6 E71 DIY Cruise Control retrofit

Hi All,
I am new on the BMW xbimmers forum.

I am looking for DIY Cruise Control retrofit or ACC/Adaptive Cruise Control for BMW retrofit on X6 E71 CIC 2010.

I have already successfully retrofit ACC/HBA/Side Assist/Lane Assist on my other car Audi A4/B8/2011 and wondering if can retrofit few other missing system on my X6 E71.

I found one but for F30/F20 series but not much information for E71 series.

Can anyone advise?
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      06-01-2015, 07:31 AM   #2
bmwx6me
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BMW Cruse Control types:
1 - SA540 Cruise Control - set speed is maintained by the engine
2 - SA544 Cruse Control with break function (LDM) - include curve speed limit, set speed in addition to SA540 is also implemented by break activation via the DSC
3 - S541A Active cruise control (ACC) - contains the functionality os SA544 and distance control via the ACC sensor
4 - S5DFA Active cruise control+Stop&Go function
At this post I am evaluating retrofit of option 1/2.

Having experience of retrofit ACC including home made calibration on VW group cars (Audi), reading Exx E7x and Fxx documentation and many different BMW forums it seems the following steps are required:

1. Replace - Steering Column Switch Cluster (SZL) with the one with lower steering column stalk for Cruise Control, as per www.etk.cc/
Guess here are two variants:
- just add lower steering column stalk for Cruise Control
- replace the Steering Column Switch Cluster
make sure Coil Spring version supports Cruise Control signal as there are more signals transported over that unit (PT-CAN bus):
• Activation of driver airbag
• Control buttons SMG (being prepared)
• Multifunction buttons
• Horn
• Steering wheel heating
Then perform Steering Column Switch Cluster/Coil Spring – calibration – in case of unit replacement.

Some info here: http://www.bmwmotorsports.org/pdf/e7...%20Cluster.pdf

2. Codding (with NCS Expert) SZL to allow PT-CAN data flow around ABS/Engine/CC Stalk/Kombi):
- change VO (Vehicle Ordered) by adding relevant future #540 or #541
- code KOMBI ( Instrument cluster to allow Crouse control display)
- code DSC-ABS (engine for #540, ABS pomp will be involved in case of #544 or #541 )
- code SZL - Steering Column Switch Cluster
I have a copy of my entire car coding and cannot find relevant TEMPOMAT / CRUISE line to modify

My CAS coding does contain:

CRUISE_CONTROL nicht_aktiv
CRUISE_CTRL nicht_aktiv
K4D03_ANZEIGE_TEMPOMAT par_gesperrt
CRUISE_CTRL_CCC nicht_aktiv
TEMPOMAT_SETZ_ANZ_DAUER wert_01 change set cruise control time on display "_01" in sec.
CRUISE_CTRL_CHAMP nicht_aktiv

But in KOMBI I cannot find any setting referring to Cruise/TMPOMAT three are only setting referring to ACC.

I found that in E7x SZL unit is now part of ABS-DSC – is that correct?

See attached original coding dump.

Anyone can help here?
Attached Files
File Type: zip CAS.ZIP (67.5 KB, 820 views)

Last edited by bmwx6me; 06-05-2015 at 12:24 PM..
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      06-08-2018, 03:54 PM   #3
bonzo11
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Hi,
Have you managed to retrofit your cruise control?

I've retrofitted cruise control to X5 E70 (got SZL from other X5) and after coding it does not work.
I've added $544 to CAS and FRM and coded (SD_Coderien with blank FSW_PSW.MAN file) all modules, then calibrated steering sensor, but CC is not working. No error messages on dash and car works fine, but CC stalk is in 'look only' mode.
When connected INPA it shows 6E0F DCC: Fehler in Interface zun Kombi-Instrument --- (DSC: Instrumentenkombination Schnittstelle), ISTA+ says DSC: Instrument cluster, interface.
Cannot think what else needs to be done?
Some ppl says on E90 forum that Car accessories in DME needs to be reset, but INPA menu is different with N57 engine and cannot find this reset option.
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      06-21-2018, 11:19 AM   #4
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Did you have any luck with the retrofit? I want to confirm that youre attempting a adaptive cruise control retrofit.
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      06-22-2018, 03:09 AM   #5
bonzo11
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No luck and I was attempting to retrofit cruise control with breaking ($544), not active one ($541).
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      04-08-2019, 09:19 AM   #6
dumitru.o
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Hi guys

I did it on e70 2008 3.0d with $544 from factory.

You need:

- ACC
- SZL for ACC (not only stalk)
- LDM (in my case)

From certain month/year the LDM role is integrated in the DSC. You can find this date in TIS

Coding with LCI year and $5DF

Last edited by dumitru.o; 04-08-2019 at 09:52 AM..
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      01-24-2020, 03:03 PM   #7
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Pretty cool

Thanks for the confirmation. I have a 2012 US LCI E70 and am considering giving this a shot. Was most of the harness existing? If not, is it a part number to buy? Any high level details of the wiring the ACC into the car would be appreciated. I believe the LDM is in my X5's DSC.

By the way, I was in Romania a month ago- Brasov. I really liked Romania. Fun people.


Quote:
Originally Posted by dumitru.o View Post
Hi guys

I did it on e70 2008 3.0d with $544 from factory.

You need:

- ACC
- SZL for ACC (not only stalk)
- LDM (in my case)

From certain month/year the LDM role is integrated in the DSC. You can find this date in TIS

Coding with LCI year and $5DF
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      01-25-2020, 01:16 PM   #8
dumitru.o
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Red face

glad you liked it !


there is no pre-existing wiring harness, you have to create everything. here is the diagram, it s pretty simple:

https://www.newtis.info/tisv2/a/en/e...t-ldm/CkNaK1aO
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      01-26-2020, 01:56 AM   #9
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Nice

Yes, not bad. Finding the right pins and connectors is always a pain, at least for me. If you wrote down any part numbers it would be great if it's not a pain for you.

Seems like ISTA-P was able to code the hydro/DSC unit and everything else for you and all you had to add was the SLZ & LDM, right?

I have been looking on eBay and the radars there don't have the BMW part number stamped on there so I need to find a cross reference.

This seems pretty doable so I will try to find the parts, connectors, & pins.



Quote:
Originally Posted by dumitru.o View Post
glad you liked it !


there is no pre-existing wiring harness, you have to create everything. here is the diagram, it s pretty simple:

https://www.newtis.info/tisv2/a/en/e...t-ldm/CkNaK1aO

Last edited by robinasu; 01-26-2020 at 09:45 PM..
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      01-26-2020, 09:48 PM   #10
robinasu
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SZL

Looks like the SZL for my US E70 LCI car will be hard to find used and is $650US new.

I will keep looking for a deal. Let me know if there is a Romanian discount someplace.
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      01-27-2020, 04:20 AM   #11
dumitru.o
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I did all the coding with NCS after i programmed the new modules with winkfp.
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