Went out and tried my lockers the other day. Everything worked fine,indicator lights solid seemed to be locked in. Also unlocked fine flashing lights off. Did this a couple of times. However got out while it was running in park and lockers engaged I heard a clicking noise from what sounded like both front and rear diffs. Sounded like cycling on and off. Hit the disconnect switch and noise stopped. Is this a normal sound? Never got out while it was running with the lockers engaged before. It’s a 2016 JKUR. Any ideas? Thanks!