Audi A6 2013 Steering Issue

Hi!
I have problem with steering light on Audi A6 4G after battery was partially discharged and brought the red steering light on the dash while was in the body shop for a scratch repair! I have done basic setting for steering end stops and is OK but there is a fault only in 44 Steering Assist (J500) C10AC 07 Mechanical Failure which i don't think so because i personally parked the car and not any faults on the car and even now the steering works perfect (light) just the red steering light on!

Recording to VCDS in here :
[Select]
[44 - Steering Assist]
[Security Access - 16]
Enter the code shown in the pop-up balloon to enable the basic setting.
[Do it!]
[Basic Settings - 04]
Select Resetting of learned values for steering assistance from the drop-down menu
[Go]
When Finished Correctly or similar is shown click [Stop]
[Done, Go Back]
[Close Controller, Go Back - 06]

But i can not reset after Resetting of learned values for steering assistance when i click on GO and says error N/A one or tree code number required?
There is a window to put the code! I don't know the code!
Please help!
Thank you!