blind spot monitor sensor

Here is the description of the problem: After the car has been driven for 10-15 minutes, the Blind Spot Monitor (BSM) starts blinking saying it is off. Can anyone tell me how hard it is to get the to BSM Module so I can check for bad wire connections? Maybe a video? I really need help on this...

The BSM light on my dashboard begins flashing, and cannot be turned off. I live in Austin TX, so it is hot down here already. In any event, when the day progresses, or the car has been driven for a while, the BSM light begins to flash. It cannot be turned off by pressing the button near my...