How Long Does Car Key Programming Actually Take?
Cutting and programming a replacement car key at your vehicle usually takes 30 to 60 minutes, depending on the make, whether you have a working key already, and how the vehicle’s immobiliser system responds. All-keys-lost situations run longer than a spare-key job because more verification steps are involved.
People expect this to be quick because cutting a physical key looks quick. The cutting is quick. The programming — getting the car’s immobiliser to accept a new transponder — is the part that actually takes the time, and it varies a lot by manufacturer.
What adds up to the total time
| Step | Typical time |
|---|---|
| Verifying ownership and vehicle identification | 5–10 min |
| Cutting the key blade to code | 5–10 min |
| Programming the transponder to the immobiliser | 15–35 min, varies by make |
| Testing and confirming old keys are removed | 5 min |
Why some vehicles take longer than others
Immobiliser systems are not standardised across manufacturers. Some accept a new key relatively quickly through the OBD port. Others use a more involved procedure, particularly if it is an all-keys-lost situation rather than adding a spare to a car that still has one working key. Newer vehicles with rolling security codes can take longer than older ones with simpler systems.
Spare key vs all keys lost
| Spare key (one key still works) | All keys lost | |
|---|---|---|
| Verification needed | Standard | More thorough |
| Typical time | 30–45 min | 45–60+ min |
| Why it differs | Existing key confirms the vehicle is yours | No working key to cross-check against |
More on the all-keys-lost situation specifically is in all keys lost.
Can it be done faster?
Having your registration, ID and VIN ready before the technician arrives saves the verification step from stretching out. Beyond that, the programming time itself is set by the vehicle’s own system, not something a locksmith can speed past.
Booking it
Tell us the make, model and year, and whether you have another working key. That alone gives a reasonable estimate before anyone arrives. Full detail on the service is on car key replacement, and ranges are on the prices page.