Cadillac DeVille Key Replacement in San Diego County (1995-2005)

Start by not trying to guess the resistor value yourself. Your 1997 DeVille uses the resistor pellet system, and the car's computer expects one specific value out of fifteen possibilities. Inserting the wrong value repeatedly can trigger a lockout that makes the repair more involved and more expensive. We read the correct value with professional equipment, cut a new key on-site, and have you starting the car again the same day. Give us a call and we will come to wherever the car is in San Diego County.

Stop cranking the key if the security light is flashing. That light on a 2002 DeVille almost always means the transponder system is not recognizing your key, either because the transponder chip inside has failed or because the Body Control Module lost sync. Keep cranking can extend the lockout timer. We come to your location, read the existing key data if any is readable, program a fresh remote head key, and run the relearn procedure on-site. Most calls like this in the San Diego area are done in under an hour.

Yes. The 2005 DTS shares the same key type and programming procedure as the DeVille from that year. Both use a remote head key with the same transponder setup and PIN-based programming through the Body Control Module. If your DTS has a four-button fob rather than three, just mention that when you call so we bring the right remote. Pricing and service are the same as the DeVille.

Here is a quick test: if the remote buttons stopped working but the car still starts every time you turn the key, the CR2032 battery inside the fob is almost certainly the issue. The remote function and the transponder function are separate, so one can die while the other works fine. If the car also will not start, the battery is not the only problem and you need a full diagnostic. We replace the battery on-site and verify the remote is still paired. On some years, a battery swap can cause the fob to lose pairing, so having us handle it saves a second call.