No problems with the unit. Revain sent me the wrong part the first time (transmitter instead of the sensor itself) but they fixed it with a second shipment. I have a TPMS fault on the dash so I bought this part and had it replaced at my local tire shop. It took them a while to figure out how to retrain the sensor, but in the end it worked and the error message went away. Hope this one lasts longer than the original!