I believe there are 2 sensors in front and 1 in back for the TOD. Had the back one cleaned because the VX wouldn't turn left or right without feeling like I was stuck in mud. Once cleaned, no problem. The dealer said they couldn't clean the front sensors because they were too fragile and wanted to charge me $2000 for new ones. Pass....If anyone knows how to clean the front sensor/sensors, please let me know. When the back sensor was cleaned, I got the lights on my TOD panel back but not the front. Normally, one level of the top group on the TOD sensor lights up but I get nothing now. I am having a problem when putting on the brakes now.....kinda like the TOD is engaging, even when I am just slowing down from regular speed. It is annoying....I have replaced brakes front and back but still the same problem so it has to be the TOD system freaking out. Once again, if anyone knows how to clean the sensor/sensors in the front, please let me know. Thanks!!! :-)) ...Kenyon