New car key cut but not starting the car? The chip needs programming. We program transponder keys and smart keys on site for most makes and models in Santa Clara.
A car key has two jobs: it must physically turn the lock cylinder and it must communicate with the vehicle's immobilizer system. If the chip inside the key is not programmed to match your specific car, the engine will not start even if the blade fits perfectly. This is the built-in anti-theft system that has been standard on most vehicles since the mid-1990s. Expert Locksmiths brings professional key programming equipment directly to your location anywhere in Santa Clara, so you do not need to arrange a tow or sit in a dealership waiting room for a day or more.
We program three main types of keys. Transponder keys have a small RFID chip in the plastic head that sends a rolling code to the car's receiver each time you insert the key. Push-button start keys, also called smart keys or proximity keys, use a more advanced two-way radio signal and must be programmed both to the key fob module and to the vehicle's body control module. Remote head keys combine a cut blade with an integrated remote and also require chip programming. Our mobile unit carries equipment that covers the programming protocols for most Toyota, Honda, Ford, Chevrolet, Nissan, Hyundai, Kia, BMW, Mercedes, and Volkswagen models commonly seen on Santa Clara roads.
Drivers in the tech corridors around North First Street and Lawrence Expressway, as well as residents throughout the city from Calabasas Drive to Homestead Road, can reach us for same-day programming appointments. We verify ownership before beginning any work and provide upfront pricing before we connect to your vehicle. Key programming is also available as a standalone service if you already have a cut key that was never programmed, or if you need to add an additional key to your vehicle's system. For a full overview of our vehicle key services, see our automotive locksmith page.
Key won't start your car? We program transponder and smart keys on site. Call for same-day service.
📞 Call (650) 850-5625Car key programming is the process of syncing a new key's transponder chip or smart key module to your vehicle's immobilizer or body control module. Without this step, a correctly cut key will turn the lock but the engine will not start because the car does not recognize the chip.
In many cases yes, but it depends on the key's compatibility with your vehicle. Aftermarket keys purchased online vary in quality and some cannot be programmed to certain vehicles. Call us before you buy and we can advise whether a particular key will work.
Programming alone typically takes 15 to 30 minutes once we are connected to your vehicle. If we are also cutting the key blade the total appointment is usually 20 to 45 minutes depending on your vehicle make and model.
We program keys for most domestic and import vehicles including Toyota, Honda, Ford, Chevrolet, Nissan, Hyundai, Kia, BMW, Mercedes, Volkswagen, and many others. Call us with your year, make, and model to confirm before we head out.
Not necessarily. If the key starts the car, the transponder chip is programmed correctly. A non-working remote is usually a separate issue: a dead battery in the fob, a damaged remote circuit board, or a remote that has lost its pairing. We can diagnose and fix this on site.
Call (650) 850-5625. Licensed #7786, upfront pricing, available Sunday through Friday 8AM to 10PM.
