On my car this solution doesn't work. I am wondering if i setting this bit not to late on startup procedure.
Anyway me7logger always show "1" so any other soubroutines don't overwrite it with zero.
@gt-innovation Could you share peace of your dissasembled code with this FD44.10 i will compare it, maybe on my software version different bits are used.

Thanks gt-innovation, but your solution doesn't work on my ecu.
I am investigating me7 functionsrahmen and noticed that evz_austot must working. Looks like i am jumping to my code from wrong place in bosch code. I think i need to do that from the begining of KOEVAB function.


Reference:

yep you are right, i jumped from 8be70, maybe ori bosch code used this variable before my jump (0->1->0) or me7logger is not able to show changes because of sample rate. But we are still talking about fd44.10 bit which nobody doesn't know what is this but someone use it:)

...anyway i am still trying to proper inject into evz_austot but unsuccessfully:

Seg0x21d@874000:5948
Seg0x21d@874000:5948             loc_875948:                             ; CODE XREF: sub_8758E8+58j
Seg0x21d@874000:5948             F3 F8 7C 8A                 movb    rl4, byte_380A7C
Seg0x21d@874000:594C             F7 F8 9F 8A                 movb    evz_austot, rl4

changed F7 F8 9F 8A => to DA 8C 00 03
code placed at C0300 returning:

  mov rl4, #0x01
or
   mov r4, [r0+]

..have to analyze with IDA deeply...