During some heavy thunderstorms last Wednesday night just west of Jackson Tennessee, I managed to knock off my cruise control on/off slider. This was awful as I had about 1900 more miles to go without cruise control or a throttle lock.
In the morning, I called the Nashville BMW dealer and told him what happened and asked if they could repair it for me. He said I was welcome to stop by, but to fix it, they would have to replace the entire switch unit - which - of course, they did not have in stock.
So, I rode the next 1900 miles or so with a very sore wrist and numb right hand most of the time. I did add one of those lever things, but since the grips on the GT are so thin, it slipped and rotated around the grip and was not very effective.
Anyway, last night I looked at the electronic service manual I just paid through the nose for, and it shows how to remove the grips / switchgear.
After I ignored the warning to not open up the two halves of the switchgear,
"Any attempt to open the unit will result in damage to the printed circuits, which are lacquer-sealed.
The top and bottom parts of the switch unit are set in their relative positions by the manufacturer: do not attempt to separate the two parts of the switch."
I found that it is a fairly simple process to fix it.
I loosened the left grip and twisted it around to the point where I could see the "works" behind the cruise on/off switch. Using a screwdriver, I held the works up tight to the housing and popped the on/off switch right back on! It's fine now.
Apparently, the dealer doesn't know that it's possible to fix but it is.
No other problems with the switch gear even going through excessive heavy rain.