Did you know some Toyota vehicle owners have no choice but to replace the cars computer once the last spare key is lost? Not every vehicle was transponder based, but those that were need the computer changed to be able to program new keys so the car will start and run again. Transponders are basically a computer chip which tells the vehicles computer that the right key is being used, and it is ok to start the vehicle. These were added to Toyota vehicles because of the high rate of some models being stolen, such as Avalon and Camry. They were first introduced back in 1999, and are now used on 98 percent of all cars, trucks and SUVs on the road today. Dont lose your last spare key-call on us today for an affordable duplicate key.