2010 Cadillac DTS Owner's Manual - Page 114

Programming Transmitters to the Vehicle Only RKE transmitters programmed to the vehicle will work. If a transmitter is lost or stolen, a replacement can be purchased and programmed through your dealer/retailer. When the replacement transmitter is programmed to the vehicle, all remaining transmitters must also be programmed. Any lost or stolen transmitters no longer work once the new transmitter is programmed. Each vehicle can have up to eight transmitters programmed to it. See RELEARN REMOTE KEY under DIC Operation and Displays on page 4-62. Battery Replacement Replace the battery if the REPLACE BATTERY IN REMOTE KEY message displays in the DIC. See "REPLACE BATTERY IN REMOTE KEY" under DIC Warnings and Messages on page 4-67 for additional information. Notice: When replacing the battery, do not touch any of the circuitry on the transmitter. Static from your body could damage the transmitter. To replace the battery: 1. Separate the transmitter with a flat, thin object inserted into the notch, located above the metal base. 2. Remove the old battery. Do not use a metal object. 3. Insert the new battery, positive side facing up. Replace with a CR2032 or equivalent battery. 4. Reassemble the transmitter. 3-6