Once you know if it works or you purchase a new one, this is how you program it:1. Get in the car with the doors closed.2. Hold down the unlock button on the door.3. Turn the key from on to off 3 times without cranking the motor or until the horn sounds and the locks cycle.4. After the locks cycle then release the unlock button.5. Hold the lock AND unlock button down on the remote until the lock cycle, this should not take longer than 30-45 seconds.6. Once all remotes are programmed turn the key on and the programming mode will end.
There is a device that criminals use. You sit near to a car you want to steal and when the owner uses the Remote entry Fob the box receive the signal. You can then use it later to open the car and steal it. Otherwise, take the vin number of the car to a dealer and have it programmed. You may want to take you title/registration to prove you own it. Recent lawsuits filed against Dealers for programming FOB's for criminals, without requiring proof of ownership, has caused Dealers to require proof.