Check the ski pass thru doors
I also noticed a plastic clicking sound about a month after I took delivery. I traced the problem down to one of the little doors for the ski pass through. The door on the trunk side of the pass through was not seated properly in its hinges. One side was seated in the hinge, but the other side was loose. I took the door completely off its hinges and then reinstalled correctly - no more clicking noise.
I also noticed a plastic clicking sound about a month after I took delivery. I traced the problem down to one of the little doors for the ski pass through. The door on the trunk side of the pass through was not seated properly in its hinges. One side was seated in the hinge, but the other side was loose. I took the door completely off its hinges and then reinstalled correctly - no more clicking noise.