Lexus Troubleshooting Questions? Ask a Lexus Expert
Hello. Welcome to Just Answer. Please allow me to assist you. The main sunroof drains are in the front corners; a bit hard to see, but if you look close yuu will see a 3/8" hole on either corner on the front edge. If these are plugged up, the sunroof will leak. the test is to take a water can with a spout and, with the sunroof open, pour the water into the front channel and then look under the car for water drainage by the front tires. If you do not see water draining out, you have blocked sunroof drains.