I would suggest you immediately check the rear 'trunk' well for water. Get under the car and gently slice an X into the center of the black rubber plugs below the area I call the 'trunk' (rearward of the differential at the lowest point of the bottom of the hatch area below the foam blocks below the carpet covering the tire kit/jack, from under the car you'll see the two rubber plugs, one on either side). If you slice that X into either one and water is present, you need to address the issue right away. Let us know!