I'm sharing my SOLUTION in new post so it can be seen easily!
My problem was so...simple and stupid.
04-Steering Angle and 16-Steering wheel was unchecked/disabled in Can gateway. Why and how...noone knows.
I saw it after making 30th Auto scan, and it shows both modules with errors or not registered, which means that they are disabled in CAN gateway. I hate myself for spending 2 months and unsee this !!!
So there is my simple recommendation about checking Steering angle sensor and adjusting it in 1 GO :
>>>>>>>>>> Preparation <<<<<<<<<<
1. Start the engine ! Park on level surface with 80-100m straight path , where can drive with 20-30km/h !
2. Go to ABS > Meas blocks > Ch1 , click on Graph button.
3. Drive straight WITHOUT wheel spin, reach ~30km/h, stop and drive back.
4. Check the graph for ABS sensors that are going bad by showing peaks in graph. If there are such - Check, clean, replace sensor/ bearing! There can be issue/peaks with sensors but no error code in ABS ! ! !
5. Check in CAN gateway if both 04-Steering sensor and 16-Steering electronics are ENABLED
6. Check for errors in ABS, and if there are no ABS/ESP related errors, except:
Steering angle sensor (G85) No or incorrect basic settings Continue below.
>>>>>>>> G85 Calibration, basic settings <<<<<<<<<<> Go to ABS
> [Coding-II - 11]
> enter 40168 and [Do it!]
> [Basic Settings - 04]
> From dropdown menu choose Steering angle sensor (g85) calibration, or just write and go to channel 60
> After a successful basic setting, field 2 should say "OK".
--- if it says not available or anything else, try again with slight 1-2deg movement of steering wheel , if it keep saying NOT AVAILABLE = your 16-Steering module is not compatible with your Slip ring. I have tested this and there are compability between those parts and must be pointed out! There are 2 versions of Modules and 2 versions of Sliprings. It has nothing to do with G85 itself, but problem is what 16-Steering module is expecting to see depending on ver.1 or ver.2 slipring teeths!
> After successful basic settings show OK, [Done, Go Back] > [Close Controller, Go Back - 06]
>>>>>> G85 Initialisation <<<<<<<Engage 1st gear and drive straight +- 1.5deg on steering wheel, until you reach 30km/h WITHOUT wheel spin ! And ESP light should go off. That shows Propper G85 Initialisation .
>>>>>>>> 44 - Steering assist adaptation <<<<<<<<<*Can be done after reseting ignition or driving car. It is separate process.
With steering wheel in 0 +-1.5deg straight, start the engine, rotate fully left , hold 5 secs > rotate fully right and hold 5 secs > turn left to 0deg and Steering assist indicator should go off and it is all done.
Here you can check your steering module version, so you know what slip ring you need, to be able to calibrate G85:
http://wiki.ross-tech.com/wiki/index.php/Steering_Wheel_Control_Module_VersionsThis is picture of 2 types of Slip rings. On the RIGHT type1. On the LEFT Type.2
Steering electronics module types 1 and 2: