This is SO old... but just what I was looking for coz I had the same problem with my Euro!! :eek:
I took it back to Honda service and the whole day they couldn't find the noise, I had to leave work early and come show them - which I did.
Apparently they say that its normal and that every other Euro makes that noise as well and that its a safety mechanism that helps release the pressure of steering when the wheel is in full lock. They say that I shouldn't put it in full lock coz it's bad for it (but sometimes its sorta hard when the parking spot is tight!) and that if u release it from full lock just a tad, it should stop making that noise.
So... in the end, nothing had to be fixed under warranty and said that if I wasn't satisfied, to let them know to call a Honda Australia representative to test it. *Shrugs* Well.. what can I say??

