2010 RT SM5. Out for a ride stop for a break. Went to start the bike, but when touching the mode button, the safety message would not go away. After many tries, the message didn’t display and I was able to start up and get home. At home, trying to start got the message screen again. When I tried to start today, the safety message didn’t display and I was able to start. While letting the Engine run, I found the following. The Mode button does not cycle through all the different modes; the turn signals are not working; the headlights are on, but won’t go to high beam or flash; the trans will not go into reverse; and the up, down, left, and right buttons are not working also. Anyone else experience this?
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Anyone else's Multi function switch not working like this?
- Thread starter Donbmw
- Start date
I can't say that I've had this happen to me or that I've come across it before, so this might not be of any help at all and I could well be wrong, but I do have a vague recollection of this being reported here before (a fair while ago??) and the fix being replacing either a dud fuse &/or relay, altho I can't recall which/which one?? (Bleedin' over-active forgettory! 
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Still, it might be worth your while to try checking the fuses and relays while you wait to see what everyone else can offer. Good Luck!
)Still, it might be worth your while to try checking the fuses and relays while you wait to see what everyone else can offer. Good Luck!
Mikey
Well-known member
If you have all of your functions not working, you may want to look really closely at the wires going out of that switch for broken wires or rodent damage under the covers! It may be the switch itself, but there's more than one switch under that cover that controls the problems you are having. I hate electrical gremlins! Good Luck
Snowbelt Spyder
Well-known member
Hey Don. Nice write up. The Left Hand Multifunction Switch (MSL) is a CANBUS controller. All of the functions that you mentioned are all CAN functions., except for a couple of exceptions. See pic 1. Of course, the gear shift function doesn't apply to you. You didn't mention the windshield. Was it working or was it that you didn't mention it. The Headlight Beam Selector isn't a CAN function, but not a contact switch either. So, it's also possible that it didn't work for another reason, or a pre-existing condition that you hadn't noted before. How about the horn?
If you want to do further CAN function testing, take it out on the road if you can, and try the Cruise Control. Cruise switch functions are passed to the MSL for conversion to CAN signals.
With the engine running, you could "try" to pull up codes, but because the three switches that you have to push are not working, that method may not work. Otherwise you'd have to get access to BUDS and check for a U0259 code. There are multiple connectors from the MSL to main harness. You can check those for corrosion and inspect the harness. especially where it goes down from the handlebars, for wear, chafing or rodent damage. Of course, as mentioned, don't forget the fundamentals, fuses and such. But, I think you're looking at a failed MSL. Replacement may be a matter of finding a salvaged unit that you hope works. Make sure you check part numbers. Good Luck.
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