Would you happen to know what model mapping mode, for example( Stock, mellow or aggressive); you were in when you noticed the LED was missing. Different manufacturers have used different colors and flash rates to indicate what mode you are in.If it's original to the manufacturer of your dirt bike then that's a plus. But if it's aftermarket or a upgrade that can be difficult. You mentioned the color blue there's not many well-known manufacturers that use the color blue for indication. So that's a plus.