Have 2015 RT with 65K . Had an overheating situation.

Added coolant. dealer said let it run awhile without putting cap on to bleed any air out of the system.

Let it run for quite awhile and was still getting small bubbles up ... Not boiling. temp gauge never moved from 1/2 way. fans coming on. when revved up a bit coolant rose in neck of overflow canister and bubbles still prevalent. Think I let it run at idle for 45 minutes or so

Of course the bike just went out of warranty about 6 weeks ago.

Suggestions.

Willie