If you have a 2002 Toyota Sequoia and the oil level sensor is reading incorrectly, this is probably your problem. Take this and install it on your next oil change, it's about 5 inches before your oil filter on the same manifold. Simply drain the oil from the truck, unplug the electrical connector and unscrew the old oil pressure switch. Install a new one. Be very careful as fine threads require precise sensor alignment. Hand tighten 1/2 turn, reconnect the electrical connector until it clicks into place and change the oil as usual. I am very glad that I solved this problem.