Just got my MO. 700 miles. Occassionally a light on the dash comes on idicating the rear hatch is open when in fact it's not. I find that when I slam the rear door hard - harder than reasonable - the light goes off. Has anybody had that problem? Is it those 2 rubber bumpers on the inside on both sides or the latch itself? Of course I can take it to the shop but would rather adjust myself if possible.