I haven't been able to take my 2012 Spyder RT SE5 to the dealer yet, so I figured I'd check out the list of faults the bike was registering. Aside from the "idiot lights", the actual fault codes were:

P0500 Invalid of missing speed on CAN (whatever the hell that means!)
0003B YAW rate sensor value
P2159 Vehicle speed not plausible (say what?)
C0063 YAW rate sensor failure

Plus I have the "check engine", "ABS" and "limp home" messages flashing in turn. This is the oddest combination of things I can imagine since on one day, the bike starts and rides perfectly. The next day its the fault codes and idiot lights from hell. Tomorrow the lights and codes could be gone, and the bike will run perfectly. Does anyone have a clue about what's going on???