Can anyone point to a TSB for the transmission software for the later (2004) XK X100 ?
I can't seem to fine it, although I find many references to it when the subject is the "toot" on the 2-3 or 3-4 shift on the 6 spd cars.

 

This one?
I believe the additive is no longer available so this post might be helpful. https://www.jaguarforums.com/forum/x...s-none-284074/

 

The TSB I heard about had to do with a dealer installed software update.

 

Try this then, it covers the adaption procedure.

 

Thats the one! Thanks.
Now to find out if there is a facility that can provide that service, given that "the (original) additive" is no longer available.