Hi Mark, this link was on an earlier thread about punto steering columns ??
Not sure if it's the same system but did the job on an A6,the wires are as thin as a hair so I got mate who repairs radio's to solder the affending joint & when I refitted it had cleared the CAN fault but gained a fault on n/s/f sensor so assumed he caught another wire & fitted a s/hand unit which needed to be programmed in with the right hex code to turn off traction control light.