2007 MITSUBISHI SPIDER ECLIPSE: When my car first moves, whether forward or backward, or whether my foot is on the accelerator or even if my foot is nowhere but I am just beginning to move, there is a high-pitched, solid alarm, for about 3 seconds. Once I get moving, it stops. There are no warning lights. The sound is like when my top is not fully open or closed. However, It does this when the top is down and securely in place, or when the top is up and securely in place. It is not the seatbelt. So it doesn't seem to be related to the top. Any ideas?