Cadillac 2008 CTS - Manual (Page 89)

14. A beep will sound and the DIC will read Ready To
Learn Electronic Key # X. At this time, all previously
known transmitters have been erased.
15. Once the transmitter is recognized and
programmed, a beep will sound and the DIC will
display Ready To Learn Electronic Key # X.
16. To program additional transmitters, insert each
transmitter in the pocket until you hear a beep
and the DIC advances to the next electronic key
number.
17. When complete, press the ignition control knob.
18. Press the unlock button on each transmitter
programmed to complete programming.
Up to four transmitters can be programmed to the
vehicle. The DIC will display Maximum # Electronic
Keys Learned and will exit the programming mode.
After performing this process, transmitters previously
programmed will no longer work with your vehicle
and must be reprogrammed.
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 3-54 for additional information.
A weak battery may also cause the DIC to display
Electronic Key Not Detected when you try to start the
vehicle. If this happens, place the transmitter in the
center console storage area transmitter pocket with the
buttons facing to the front of the vehicle. Then, with
the vehicle in PARK (P) or NEUTRAL (N), press
the brake pedal and the ignition control knob.
See Starting the Engine on page 2-34, for additional
information about your vehicle’s electronic keyless
ignition with push start. Although this will start the
vehicle, it is recommended that you replace the
transmitter battery as soon as possible.
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