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+---- Thread: ACC and FCW not working after coding - F02 LCI 750Ld Xdrive (/showthread.php?tid=83688)
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ACC and FCW not working after coding - F02 LCI 750Ld Xdrive - aleksandrw - 25-09-2023
Hi guys! I hope you don't get mad about the long read.
I have a 2012 F02 750Ld (WBAYF610X0DE58205). Car worked great for about a year and had only 3 errors in ISTA for sideview front bumper cameras, AUC sensor and AHM. I ignored these since I don't use the sideview cameras, automatic air recirculation or the trailer hook, so I didn't want to mess with anything.
Now, believe it or not, in ~20k km, I never used the kickdown, until a few days ago, when I noticed that if accelerating all the way revs would go up to redline, but the transmission would not shift, otherwise the transmission worked great. So I started troubleshooting: checked oil and asked a local ZF specialist that suggested it might be a software issue. When I openned esys and read FA (never done this for the car), I noticed that I had the wrong type key - YE81 (750Li US), instead of YF61. Otherwise, the VO was same as factory in terms of car options.
Started coding: 1. edited FA with the correct type key;
2. used BU to compare SVTs and have a look at the differences in coding between my type key and the 750Li one;
3. started coding all modules in which BU was telling me I had differences: EGS; ICM_V; RK; ASD; CAS; FRR; DSC2; ICM; EKPM2; IHKA; TCB; HU_NBT; DKOMBI;
After doing this, I cleared all codes and went for a test drive. First issues: collision detection warning error the second the car moved. Since I got that, I also checked ACC with the same result - error in iDrive when I try to set the speed. Oh and the shifting issues were not resolved either.
So I get back to the garage and start flashing the modules that required that after TAL calculation: DME; CAS; EGS; FRR; DKOMBI; SM; TCB and ignored ACSM.
I go for another drive: tranny issues are gone, working like a freaking charm. I was still getting the FCW and ACC errors in the idrive, but since it was getting late, I decided to try and solve it today.
Today, I open ISTA, same 3 errors as before and an additional 2:
signal (total braking torque request, 60.1.4) invalid, transmitter ICM
signal (roadway inclination, 56.1.2) invalid, transmiter ICM
I thought something might be wrong with the ICM, so I messed a bit with it, so that I could also flash that - flashed it, coded it, no luck - same erros in ISTA and same issues with the car's FCW and ACC. Next step was to take a look at KAFAS2 and check FSCs and I got stunned, BE and 7E where ok, but BF was not, which is extremly unusual since my car comes with 5AT and should have all 3 FSC codes. I tried getFSC, which worked for BE, 7E and BF, I saved them, but when using them to upgrade FSC, only BE and 7E worked, BF did not. So I used a fake FSC, with another VIN for BF, just to see if FCW will work. It still doesn't, nor does the ACC.
All other things related to KAFAS2 work - pedestrian detection (warning in HUD pops up, it uses the fog lights to highlight the pedestrians), high-beam assist; sign recognition, all good besides the collision detection. I guess the ACC is also in some way related to KAFAS2. I have reached a blocking point, since I don't know what I did wrong. This is not a retrofit job, so it should not be this complex. All I did before these errors popped up was: edit FA with the correct type key, code CAFD for ECUs that required coding after the type key change and that's when the errors popped up. Yes, I did also flash CAS, DME, EGS (these 3 I flashed to try to solve the tranny issue, which it did) FRR, DKOMBI, ICM, SM, TCB; but ACC and FCW stopped working before I flashed anything.
Now I don't have a next step. I don't know what messed with the FSC Code BF, but ok, I got that kinda covered since all 3 codes are now accepted. However, something related to KAFAS2 is still not working as it should. Should I also flash KAFAS2? Should I flash ACSM, is this related to the issues (never flashed ACSM and kinda scared to do it, since I am not aware of the procedure needed to lock the airbags)?
Any ideas or help is much appreciated since my knowledge in e-sys has only brought me this far.
PS: added a pic of the errors in ISTA.
RE: ACC and FCW not working after coding - F02 LCI 750Ld Xdrive - Node - 26-09-2023
99.9% your signal invalid reasons are differences between firmware versions in various modules. BMW sometimes change the "language" modules are talking between themselves. You should NEVER EVER have many years differences between module firmwares.
RE: ACC and FCW not working after coding - F02 LCI 750Ld Xdrive - aleksandrw - 26-09-2023
(26-09-2023, 06:48 AM)Node Wrote: 99.9% your signal invalid reasons are differences between firmware versions in various modules. BMW sometimes change the "language" modules are talking between themselves. You should NEVER EVER have many years differences between module firmwares.Thank you for the reply. Not sure how to check firmware versions in E-Sys, tho.
RE: ACC and FCW not working after coding - F02 LCI 750Ld Xdrive - Node - 26-09-2023
Firmware are all things you flash to units - BTLDs, SWFEs, etc. Just flash ALL CAR and thats it. Instead of nit-picking units based on... I don't know what.
P.S. I have a feeling your initial "problem" was rather due to gearbox adaptations. It just adapted to slow driving. Adaptations reset could have been enough.
RE: ACC and FCW not working after coding - F02 LCI 750Ld Xdrive - aleksandrw - 26-09-2023
(26-09-2023, 09:59 AM)Node Wrote: Firmware are all things you flash to units - BTLDs, SWFEs, etc. Just flash ALL CAR and thats it. Instead of nit-picking units based on... I don't know what.
P.S. I have a feeling your initial "problem" was rather due to gearbox adaptations. It just adapted to slow driving. Adaptations reset could have been enough.
Got it. I did reset gearbox adaptations at first, but nothing changed.
RE: ACC and FCW not working after coding - F02 LCI 750Ld Xdrive - liviu2004 - 26-09-2023
Its not that the values are incorrect but probably the signals type, range, address, etc has been changed in the communication structure.
RE: ACC and FCW not working after coding - F02 LCI 750Ld Xdrive - aleksandrw - 26-09-2023
(26-09-2023, 09:59 AM)Node Wrote: Firmware are all things you flash to units - BTLDs, SWFEs, etc. Just flash ALL CAR and thats it. Instead of nit-picking units based on... I don't know what.So I flashed all the modules that required a flash, including ACSM. I still get the same two errors and collision detection and acc not working.
P.S. I have a feeling your initial "problem" was rather due to gearbox adaptations. It just adapted to slow driving. Adaptations reset could have been enough.
(26-09-2023, 13:21 PM)liviu2004 Wrote: Its not that the values are incorrect but probably the signals type, range, address, etc has been changed in the communication structure.
is there a way that I can troubleshout this?
(26-09-2023, 13:21 PM)liviu2004 Wrote: Its not that the values are incorrect but probably the signals type, range, address, etc has been changed in the communication structure.
is there a way that I can troubleshoot this?
RE: ACC and FCW not working after coding - F02 LCI 750Ld Xdrive - serhat40 - 27-09-2023
hi did you also checked de date of manufacture/zeitkreterium when you was coding or flashing
I see that your car is from 28-nov-2012. but ISTA Says Juli-2013. Maybe there is difference in modules in date and the coding
There is difference in 2013-7 and upper with modules than 2013-7 lower like kafas etc..
Its a Guess.
RE: ACC and FCW not working after coding - F02 LCI 750Ld Xdrive - kuno24 - 27-09-2023
I level (factory) F001-12-11-502
I level (current) F001-17-03-505
Go to Esys, VCM, read I Level from Master, edit it (if needed, very important, that factory I Level was right), write back
Also write to backup
After this flash all modules (and off course code) or better, use ISTA for flashing.
If ESYS is not Your friend, then find who knows what to do. Simply play with this program is strongly prohibited.
Production date:28.11.2012
If Yo still have problem with KAFAS FSC, may be order FCS repair pack and solve problem with this. Without KAFAS collision detection ACC claims.
Also double check, that FA have all listed parameters, also paint and upholstery code.
RE: ACC and FCW not working after coding - F02 LCI 750Ld Xdrive - serhat40 - 27-09-2023
(27-09-2023, 11:58 AM)kuno24 Wrote: I level (factory) F001-12-11-502
I level (current) F001-17-03-505
Go to Esys, VCM, read I Level from Master, edit it (if needed, very important, that factory I Level was right), write back
Also write to backup
After this flash all modules (and off course code) or better, use ISTA for flashing.
If ESYS is not Your friend, then find who knows what to do. Simply play with this program is strongly prohibited.
Production date:28.11.2012
If Yo still have problem with KAFAS FSC, may be order FCS repair pack and solve problem with this. Without KAFAS collision detection working ACC claims.
Indeed, I was thinking exactly the same