I have a 2010 JK Unlimited Sahara. The ESP OFF and 4WD light has starting flickering on and off, randomly. Trouble is sometimes it does it for a minute or so and other times it does it for long periods with the chimes chiming every couple of seconds. This is very irritating for a thirty minute trip. I plan to take it to the dealer this week, but does anyone have any idea what this may be? P.S it hasn't been in 4WD in months.