[DayvG]

I thought you could also f30!  I will have to buy another one.  But isn't this system just about LDW?  for FCW and pedestrian is required?  How well does FCW LDW work and not pedestrians?

I don't know mate. I retrofitted KAFAS2, ACC, LCW, auto trunk, PMA and more and have no faults in ISTA. I can't answer why it isn't working but as they are safety functions everything has to be right. It might not be the part number causing the issue but then again it could be. The ISTA fault needs to be cleared regardless. Look at the 2 attached PDF. Whilst they are similar there is a difference in that F31 LINBUS is connected to FEM and F10 has ZGW. Whilst this may not seem important the way that LINBUS signals are handled is different. F10 LINBUS in SZL but then SZL connects to ZGW over FLEXRAY. It may not seem important, but its different and how it affects the components I don't know.