New one gear icon with !

[Clubin]

Came up after a hour ride. Went away after I shut it off and restarted it.
No codes from It.
Same gear icon in the dash and cluster.

 

[oneal]

Interesting, manual says "possible transmission condition " . If it flashes ecm to reduce engine power. I have read where some are seeing some higher temps when they run 50 mph for extended lengths.
My check engine light came on yesterday after a couple hour ride with ac cranked up but I shut it off without retrieving the code.
Good music btw.

 

[got2fly]

Mine did the same thing today. only 2.5 hours on the clock. Just like you, I switched the engine off and restarted and it went away.