SPX TPMS Tool (SPX p/n J-46079)
WARNING: This page is about a different car, the 2008 Suzuki Swift +, 2008 Pontiac Wave, and 2008 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.
Holding the tool near the tire stem will force the sensor to transmit a Learn Mode-LF Triggered message.