What Is a Transponder Key and Why Does Your Car Need One?
Understanding transponder keys, how they work, and what to do when you need a replacement.
If your car was made after 1995, there's a good chance it uses a transponder key. Here's what you need to know.
What Is a Transponder Key? A transponder key contains a small microchip in the head of the key. When you insert the key into the ignition, the chip sends a unique signal to the car's immobilizer system. If the signal matches, the car starts. If not, the engine won't turn over.
Why Transponder Keys Matter Transponder keys dramatically reduced car theft when they were introduced. It's nearly impossible to start a transponder-equipped car with a standard cut key copy — the engine immobilizer prevents it.
Types of Transponder Keys - Fixed code: Always transmits the same signal - Rolling code: Generates a new code each time (more secure) - Encrypted: Uses advanced encryption (newest vehicles)
Can a Locksmith Program Transponder Keys? Yes! A professional automotive locksmith has the equipment to cut and program transponder keys for most makes and models. This is typically 40-60% cheaper than going to a dealership.
What If You Lose All Your Transponder Keys? Even if you've lost all copies, a locksmith can program a new transponder key to your car's immobilizer. This requires specialized equipment but can be done on-site.
Cost of Transponder Key Replacement Expect to pay $100-$250 depending on your vehicle. Luxury and newer vehicles with encrypted chips cost more.
Mobile Locksmith Columbus programs transponder keys for all major makes and models. Call (380) 777-8858 for fast, affordable service anywhere in Columbus, OH.