I have a 2006 ML350. The dashboard lights turn on about 15-30 secs after I turn off the car and lock the doors. This has caused my battery (just replaced because thought that would help) to drain. I was told that I need to replace my Rain Sensor, so until I can afford to get the part I just unplugged it, however, it is still turning on. Has anyone had this problem and/or have any suggestions on troubleshooting this?