07 Corolla - Hot pipe under dashboard? Is this safe inside the car.

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Hi I have a 2007 Toyota Corolla and recently I found a pipe under the driver side dashboard that burned my fingers. I dropped something on the floor and when I came back up I felt heat coming from under the dash so I stuck my hand right hand under the dash and burnt my fingers. I went to Toyota and they could not tell me what this does they just told me to be careful. The pipe is located under the driver side dash torward the center of the car. Does anyone know what this pipe does?