2000 Toyota Sienna Owners Manual - Page 226

00 SIENNA(U) If you lose your wireless remote control transmitter Please contact your nearest Toyota dealer and you can purchase a new wireless remote control transmitter. Have the registered identification numbers of your transmitters deleted from your vehicle by your Toyota dealer as soon as possible to avoid the possibility of theft or an accident. Then, have the identification number of your new transmitter registered. At the same time, you must bring all of the remaining transmitters to have them registered again as well. You can use the wireless remote control system with the new transmitter. Contact your Toyota dealer for detailed information. 226