Nissan Repair Questions? Ask a Mechanic for Answers ASAP
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The rear door drain could be clogged which may be allowing some moisture into the car. To clear the drain you need simply a small screw driver. Look along the bottom of the door towards the back and pull back the rubber door seal just a little. Then use the screw driver to poke into the drain and see if the door drains.
If it's not the door drain, I have seen where the passenger side or drivers side rocker panel gets clogged. For that a hole would need to be drilled to drain the water out of the rocker. I would suggest to have it done by a professional if drilling is required.
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