The dealer (or locksmith) will typically:
* Identify your vehicle: They'll need your VIN (Vehicle Identification Number).
* Verify your ownership: They'll likely need proof of ownership, such as your driver's license and vehicle registration.
* Program the new key: This involves connecting a diagnostic tool to your car's computer system and uploading the key's information into the vehicle's immobilizer system. The method varies significantly depending on the make, model, and year of your car. Some newer vehicles may even require replacing the entire car's computer system or specific modules if keys are lost.
* Cut the key (if necessary): For traditional keys, they'll also cut a new key to match your car's ignition lock cylinder. For key fobs, this step is usually not needed as the programming is all electronic.
Attempting to program a key yourself is highly discouraged. You risk damaging your car's computer system and potentially incurring much higher repair costs than simply going to a professional.
