2000 Toyota 4Runner

My Toyota 4Runner runs great with 160K + miles but last almost a year now, I have been hearing this noise like water boiling in kettle and occasionally twig braking sounds coming from under the glove compartment. There were also water leaks on the passenger side mat on few occaions. I take my car services to Toyata and they claimed they checked and found no problems and for the water leaks they said they drained the AC water hose and should recur. For the noises thay said they have not heard any. I hear the noises when I start the car and for the first few minutes while driving but then it fades away. Please help why is this happening

Thank you