2010 Cadillac STS Owner's Manual - Page 107

Programming Transmitters to the Vehicle Only keyless access transmitters programmed to this vehicle will work. If a transmitter is lost or stolen, a replacement can be purchased and programmed through your dealer/retailer. The vehicle can be reprogrammed so that lost or stolen transmitters no longer work. Each vehicle can have up to four transmitters programmed to it. Programming with a Recognized Transmitter A new transmitter can be programmed to the vehicle when there is one recognized transmitter. For vehicles sold in Canada, two recognized transmitters are required to program a new transmitter. 1. The vehicle must be off. 2. Both the recognized and new transmitters must be with you. 3. Insert the vehicle key into the key cylinder located on the outside of the driver door. 4. Turn the key to the unlock position five times within five seconds. 5. The Driver Information Center (DIC) displays READY FOR FOB 2, 3 or 4. 6. Place the new transmitter into the transmitter pocket, located inside the center console storage area located between the driver and front passenger seats, with the transmitter buttons facing the front of the vehicle. 7. A beep sounds once programming in complete. The DIC displays READY FOR 3 or 4, or MAX # FOBS LEARNED. 3-7