2025 Cadillac CT5

Programming Guide for 2025 Cadillac CT5 Smart Keyless Entry Remote Fob

The 2025 Cadillac CT5 is not onboard programmable, which means remote key fob programming must be completed using professional diagnostic tools. The following process outlines how a technician typically performs key fob programming for this vehicle. Smart Key

Programming Procedure (Professional Equipment Required):

  • Step 1: Gather all remote key fobs that need to be programmed. All existing remotes must be reprogrammed at the same time.
  • Step 2: Ensure the vehicle battery is fully charged. Programming should only be done under stable voltage conditions to avoid system errors.
  • Step 3: Use the mechanical key inside the fob to unlock the driver door manually if the vehicle is locked.
  • Step 4: Enter the vehicle and identify the OBD-II port, located under the dashboard near the steering wheel.
  • Step 5: Connect a certified diagnostic scan tool to the OBD-II port. This tool allows secure access to the vehicle’s keyless entry and immobilizer systems.
  • Step 6: Using the scan tool interface, the technician will select the remote programming option for the 2025 Cadillac CT5 model.
  • Step 7: When prompted, place the new remote fob in the designated programming pocket (usually in the center console, cupholder, or a specified RFID area).
  • Step 8: Wait for the system to confirm recognition of the remote. The Driver Information Center (DIC) or the diagnostic tool will display a success message.
  • Step 9: Repeat the placement process for each additional remote, one at a time, until all intended fobs are recognized and programmed.
  • Step 10: After all remotes are programmed, the technician will exit programming mode. The system will confirm completion.
  • Step 11: Test each programmed remote for full functionality—LOCK, UNLOCK, and PUSH-TO-START should all respond appropriately.

Additional Considerations: Up to eight remotes can be programmed to the vehicle. Any remotes not reprogrammed during the session will no longer function. This procedure must be completed by a professional with access to GM-approved diagnostic equipment.