These things are quirky. I rotated tires yesterday, fronts to rears and rears to front, no low pressure messages. I drove 80 miles today to the dealer to have some work done, with no messages of low tire pressure. When I left the dealer today I got the low tire message. I went to Costco and inflated all 4 tires to 65 psi and drove 80 miles home. I still had the low tire message remaining lit. When I got home I checked the minimum tire pressure sticker on the driver door panel I found that 70 psi is the minimum for the rears. I inflated the rears to 75 psi and the lights went out and all is well. The only problem was the rears were below the minimum.