2008 Sportsman with “hot handlebars”

I am relatively new to ATVs, had this one for a few years but don’t get a chance to ride much.
Went for a ride in the bush yesterday and after maybe 15 minutes my handle bars got quite warm to the touch (uncomfortably). I see no sign that these are an add on (no wires or switches I can find.) Do they come with factory heated handlebars? If so, is there a switch somewhere? We can’t find anything on the machine or in the manual. Or is there some other reason this could happen?

Any help would sure be appreciated!