Most new cars will display all tires, pressure and temperature, which many older cars don't, like my 2008 Mazda 6. It helped me identify the faulty sensor at first, but I had one other problem with a faulty TPMS module which I had to replace because it couldn't connect to the CANBUS because of this module. After replacing the TPMS module in my 2008 Mazda 6, the TPMS system restarted, which was pretty cool. Once you get used to using the tool, things will be pretty easy. Copying sensor IDs from the old to the new is easy. The tool can read sensors from other manufacturers, but only programs Autel MX sensors, so it is useful for troubleshooting. Even if you buy a different manufacturer's sensor, it will read it and reprogram the car to use the new sensor, but the other manufacturer's sensor will not be programmed. Once you have all the sensor locations and IDs, write them down for future reference. This tool remembers the IDs until you use it on another car, for example. The importance of entering the ID is a precautionary measure in case of error. The OEM ID can be written on the sensor, but if you have replaced it with an MX sensor it will not be written. You can probably get an ID from your car, but it's easier to write it down in a safe place that you can easily access, and this is where Microsoft One Note comes in handy, as you can access your notes from your phone, if You have it I have One Note and a Microsoft account.