I fix airplanes for a living. Having something not working right is not how we do business if you know what I mean. The ACAWS "total fuel low" caution is not indicating on HHD #3....ahhh, we don't need that one anyways... Well, the spare tire was low at 20 psi. But according to the manual, if the spare tire was installed you would get the low tire pressure warning light anyways, indicating that there was no sensor in there to begin with. I guess my batteries are dead...