its not suppossed to. However, on my 98, I had a small water leak and left the boat in the water overnight last year to come find about 18 inches of water in the ski locker and engine compartment. Lucky it didnt sink. Over the summer I pulled the battery switch out and figured out the bilge pump was on the switched side of the battery swicth. I moved it to the post with the battery lead and the problem is now fixed and so is the leak that caused the problem. You can test it like i did, open the engine compartment and start adding water with a hose. It should kick on.