Toyota Camry 2009. Nice pool of water in the bottom of the trunk? Tip: There are plugs to let out the water on the bottom. Gave it two weeks and there isnt any more water, but weather has been ok. How do I diagnose the problem? Don't see any issues with the seal. Is it possible it got in cuz of a large puddle etc and not from an issue with the seal?
You have leafs, and dirt/debris or a whole bunch of junk by the gasket by your trunk?
Did you close it last time it rained?
If the answer is yes to any of those that's your answer.