so like the title says, my reserve light won't come on when i'm running low on gas (i've gotten it realllll low before), but when i start the car every morning it lights up along with everything else for a second or two. it also lights up when i use the check control knob to do an instument cluster test. any ideas? i was thinking maybe a fuse or something.. the actual gas gague seems to be pretty darn accurate, and the OBC pretty accurate except it consistantly over estimates my range when the tank is near full.