My odometer readout in the speedometer is always calibrating when I get in and start the truck.....been that way now for a couple of months

is it because

a. it's cold outside
b. it's telling me the Eagles don't have a prayer Sun.
c. it's somehow connected to all the birds lately dying in flight
d. maybe my main battery is dying
e. it's either my battery is getting old or it's cold outside(did I mention this
as an option?)

anyone experience this also ?

thanks

 

f. You need to finish the compass calibration you started.

 

that I started??
Need more info here, I'm baaaaaadd with computers.
It never seemed to have to recalibrate when I first bought the truck (08' FX4 ) 19k miles

thanks

 

mine did it once....if you clear out the trip miles and hold the button too long it puts the compass into calibration....read your manual as it took me a few times to get it back to the way it was.