The dazzle light settings you mentioned may be the key to this...
CODDT_00_SCAL_SEN_DAZZ_00_LIN "normal" setting for sensors
Werte = 4A
the hex equivalent of 74 is 4A
CODDT_00_SCAL_SEN_DAZZ_01_LIN "dark" setting for sensors
Werte = 1A
again hex equivalent.
CODDT_00_SCAL_SEN_DAZZ_02_LIN "light" setting for sensors
Werte = 64
These may change the way the mirrors respond to light but wouldn't necessarily differentiate between inside and outside mirrors.
1974 2002 that was fun
1985 325 very cool
1994 325 smooth as a gravy sandwich
2011 X3 after a long dry spell, the fun resumes.