I own 2015 Jeep Grand Cherokee and recently changed my winter tires to summer tires. I've had summer tires for second year and when I put on tires this year TPMS light came on as soon as I drove down the street. I filled all tires to appropriate pressure but light stayed on indicating TPMS needs service. Note that all tires read the appropriate inflation level but still had error code blinking everytime I started my truck. Had town fair tire attempt to diagnose problem and they could not saying it may be a a bad sensor. Well I decided to wait before I brought to dealer knowing they are going to charge crazy money to fix. Well today, 2 weeks after the issue happened, I started my truck up and like magic TPMS light went off. I'm happy it did but caused me stress thinking about getting it fixed..so if this happens to you just wait awhile, at least couple of weeks before paying tip off dealer to fix.