this is a cheap relearn tool that works great, I have the next model up its a ATEQ-VT10
http://www.ebay.com/itm/ATEQ-VT5-TPMS-RESET-TOOL-SCANNER-PROGRAMMING-RELEARN-ACTIVATION-like-Kent-Moore-/251371462273?pt=Motors_Car_Truck_Parts_Accessories&hash=item3a86e81e81&vxp=mtr