Hot answers tagged water-leak
Do you mean the rear windscreen or the side door window? If it is the windscreen, I believe they are bonded in and so will be very difficult to do anything with unless you have specialist equipment. If it is the door window, the seals on these usually clip to the door frame and so should be replaceable. You may find they you have to remove the window glass ...
Get a friend to spray water on the windshield and surrounding areas while you are inside the car doors closed with a flashlight looking under the dash. Don't spray the water forcibly at the windshield try to make it like a rain shower. You can make a simple stand out of pump pipe holding a shower head to do the same thing if you don't have an assistant.
I wish you luck. In my experience any car that's 10 years old or more is probably leaking somewhere, just most times people haven't noticed yet (although, they eventually notice when the floor rusts through and falls out). The causes of leaks are multitude. You just have to go around every spot where there's a break in the metal (antennas, windows, trim, ...
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