So happy with the purchase. First, I bought the wrong ones. Bought 4 left sensors. They called me and wrote a letter asking if that was right. Or if I wanted 2 left and 2 right. You canceled my previous order. They sent me a link to the correct order. I have ordered the parts needed. Now that I've installed them on my 2014 Jeep Wrangler, I'm concerned. I wasn't sure if they would work or if I would have to program them. Turns out they program themselves while driving. Approximately 5 miles at a speed of over 20 km/h. The low tire pressure light on the dashboard went out. So yeah, I just wanted to thank them for their great customer service. And a great product. thank you guys