1999 Cadillac DeVille

Programming Guide for 1999 Smart Keyless Entry Remote Fob

Important Notice: The 1999 model does not support onboard programming for remote entry fobs. Programming must be performed using specialized diagnostic tools operated by a qualified automotive technician. Follow the steps below to prepare for a successful programming session.

Programming Procedure:

  • Step 1: Confirm System Requirements Verify that your vehicle requires professional programming by reviewing the owner’s manual or checking system specifications for your model year.
  • Step 2: Acquire a Compatible Remote Before beginning, make sure the replacement remote is fully compatible with your vehicle’s keyless entry system.
  • Step 3: Locate a Qualified Technician Find a certified automotive professional with the proper tools and experience to program remote fobs for your vehicle.
  • Step 4: Prepare Your Vehicle Information Write down your Vehicle Identification Number (VIN), current mileage, and model year. This may be required for verification or system access.
  • Step 5: Gather All Existing Remotes Some systems will erase previous remotes during programming. Bring all remotes you intend to use so they can be reprogrammed together.
  • Step 6: Choose a Service Location Determine whether it is more practical to drive your vehicle to the technician or request mobile service. If the vehicle is drivable, visiting the technician’s location may reduce service fees.
  • Step 7: Schedule an Appointment Contact the technician and book a programming appointment. Confirm their availability and ask about documentation or identification needed.
  • Step 8: Bring Proof of Ownership Be prepared to present valid proof of ownership—such as your vehicle registration or title—along with a photo ID if requested.
  • Step 9: Technician Connects Diagnostic Equipment At the appointment, the technician will use a computerized diagnostic tool to access your vehicle’s onboard system through the OBD-II port.
  • Step 10: Remote Fob is Programmed The technician will follow secure procedures to program the smart key remote to your vehicle’s control module, enabling full functionality.
  • Step 11: Test Remote Functionality Once programming is complete, verify that the remote operates correctly by testing functions such as lock, unlock, and trunk release.

Additional Considerations:

Battery Check: Ensure the remote has a fresh battery before programming to avoid signal or pairing issues.

Time Requirement: Programming typically takes 15–30 minutes depending on technician experience and vehicle system response.

System Capacity: Some models allow a limited number of remotes to be programmed—confirm this if adding multiple fobs.

Lost All Remotes: If no remotes are currently programmed, more documentation may be needed before programming can begin.

Spare Key Tip: If you’re programming one fob, consider adding a spare during the same session for convenience and backup.