ON Semiconductor and RFMicron have expanded their collaboration in order to develop an effective leak detection solution for in-line vehicle production. This RFM5126 Moisture Intrusion Detection system makes use of battery-free and wireless sensors to detect in-vehicle water leaks caused by incorrect assembly. Before the vehicles leave the factory, it is important to check them for leaks and assembly issues so as to improve outgoing quality as well as to avoid customer warranty issues. To address this issue, the new automated leak detection system has been assembled in the production line in a way that it can detect the smallest damage-inducing leaks.