I noticed that my "overdrive off" light on the gearshift doesn't light up when I turn off the overdrive. I tested the button to see if it still worked at it was definitely taking it out of overdrive when I pushed the button. Anyone know how to get the shift lever apart or how to change out the light? Or is this some kind of LED? It's a 2005 FX4. It was simple on my old 99, the end of the shift lever just popped off, but this doesn't look like it comes apart. Thanks.