Transponder keys in Fairfax, VA
Most car keys today carry a small chip that talks to the car. We cut and program transponder keys and fobs for many makes and models, at your vehicle.
- Mobile service across Fairfax
- Quote before work begins
- Open Monday to Sunday
How does a transponder key work?
Inside the plastic head of the key sits a tiny chip with no battery. When you turn the key, an antenna ring around the ignition powers the chip, which answers with a code. The car's immobiliser checks that code and only then lets the engine run. A key that is cut correctly but not programmed will turn the ignition but won't start the car.
Anti-theft features
Transponder systems made hot-wiring far harder, and many use rolling or encrypted codes that change with each use. That's good for security, but it means a replacement key has to be programmed to the car with suitable equipment rather than just cut.
Why are replacements more expensive?
You are paying for the chipped blank, the cutting and the programming time and equipment. Remote fobs add the transmitter. Getting a spare made while you still have a working key is usually simpler and cheaper than replacing your only key. We quote before any work begins.
Transponder key FAQs
Can you program a key I bought online?
Sometimes. Many online keys are the wrong chip or poor quality. Send us the details first and we'll tell you if it can work.
What do you need to make a transponder key?
The year, make, model and VIN, plus registration or title and photo ID that match.
Can a lost key be disabled?
On many vehicles, programming new keys removes the lost key from the car's memory. Ask when you call.
Locked out or need a quote?
Call to check today's availability. We give you a price before any work begins.