What do you mean it doesn't work? On the earlier models when you recalibrate the TC is turned off, to reenable it hold the + button for a while and it will turn back on.
This may or may not be useful. You haven't turned it off accidentally have you? i managed to do this on my new 1100rr while adjusting my clutch so it would not creep forward while 2 fingering it at traffic lights. I found i had held the - button down for a couple of seconds while tc on 1 and it turned off. Hold + down for a few seconds to turn back on.
First ride on bike when new clutch lever did turn traction control down,sorted that by rolling handle bars forward and moving clutch lever to where I wanted it.Tracton control working again now ????