Got in the car today and tried to buckle the kids up in their seats and discovered the rear passenger buckle will not latch. When I press down on the release it is difficult to press and it is very slow in popping back up. When I insert the male end of the buckle into the female end, there is no click. The car is 7 months old and I am at a loss as to what may be causing this and how to fix it. Any ideas or is this something that needs to go back to the dealer to be sorted out?