Re: 2010 RT only starting in neutral
Summary: The problem magically fixed itself.
I have a 2014 R1200RT with cruise control and recently experienced this same problem (Will not start except when in neutral) so I went after the clutch switch (two switches in the switch unit).
First, there seems to be some inconsistency in bikes so I though it worth mentioning that the switch on my bike is removed with a T9 torx as opposed to a hex wrench as referenced by others. Also, the switch on this bike is up/down asymmetrical so it cannot be installed upside-down. Furthermore, the switch mounts on a locating pin so adjustment is not possible.
Prior to removing the switch, I did confirm that I could hear two clicks as I pulled in the clutch lever so it seems that the switch was being properly activated. I removed the switch and poked at it with an ohm meter but since I don't know how the two switches are wired, I really didn't know what I was looking for, except that things changed when I activated the switch levers. Finally, I re-connected the switch to the bike wiring but left the switch hanging free so I could activate it manually. I then tie-wrapped the clutch handle down, put the bike in gear, held both switches and tried to start the bike. It started! I looked at the actuator lever and saw that when the clutch handle is pulled, one switch is de-activated while the other is activated. I tried the starting process while better emulating the function of the clutch lever and it started again. I re-installed the switch and it still works.
My current speculation is that either the connector contacts are marginal and the removal/re-attachment cleaned the contacts sufficiently to get things working, or the internal contacts are marginal and my repeated activation was enough to get it working. In any case, I am now more comfortable with the idea that the source of the problem is at switch so if this happens again, I will head down to the dealer and plop down the $100 ($89 MSRP) for a new switch and spend less time on the diagnosis.