A straight to the point at home guide to replacing a TPMS sensor. The video uses a TPMS learning tool to trigger the sensors. There is an alternative to using the tool. That is to let the air out of the tire during the relearning process where the tool button would be pressed. The sensor will acknowledge the loss of air pressure, the same as pressing the button on the tool. The car will honk, indicating to move on to the next tire. Be sure to reinflate the tires once the relearn process has finished.