Perfect and accurate placement of the OEM tire pressure monitor sensor in my 2009 Jeep Grand Cherokee required no programming, replaced it with a broken old one and after a few minutes of confusion it became off the computer recognized and the tire pressure lamp went out! OneNote, if you get the old one back from the installer, throw it away immediately! Because if you leave it in the car for a while the computer doesn't find the new one, it keeps reading the old one you just took out and since it's not even in the tire it shows low tire pressure. must be disposed of! This is a very important point, believe it or not! I would 100% recommend this to anyone who has a 2009 Jeep Grand Cherokee that needs replacing, it's best to replace all 4 at once!