If you want to save about 75% on the price of a Toyota transponder chip key, you can buy the key and program it yourself. A Toyota dealership will charge you 3 times what it will cost you to program a key yourself. Most people don't realize that you can't just make copies of keys anymore. Technology these days means computer chips in car keys so that vehicles are much harder to steal. Well you may not have your car stolen, but you may feel like you had your wallet stolen after paying $100 to have a key programmed. Follow these steps to program a Toyota transponder chip key yourself. Have a question? Get an answer from a Mechanic now!