Is it a low pressure warning or TPMS fault message. I get the low pressure warning the first day the temperature drops 40 degrees if I'm running close to the low pressure limit--it usually takes filling tires to the full 80 psi and some driving to get it to go away. I get the fault message when towing one trailer equipped with its own pressure monitoring. I goes away on its own in a few miles and never happens when not towing that particular trailer. I assume it is a conflict between the two systems. 2012 F-350 SRW SBCC.