So I just rotated the tires for the first time on my '12 LT. Once I was done i put the car in relearn mode and slowly let air out of the driver side front tire. Never heard the horn beep. The pressure got down to 20 psi! I over inflated the tire back to 41 and started the process again.... still no horn beep! I literally tried 5 times then said piss on it. Anyone else absolutely not been able to get this to work by slowly letting air out?