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  1. Transponder Keys: Everything You Need to Know - Keyway Lock

    How Transponder Keys Work The RFID micro-chip is an anti-theft device that sends a signal to the immobilizer to start the car. Unless the immobilizer recognizes the digital serial number, it …

  2. A Look Inside Your Transponder Car Key: How Does It Work?

    A transponder key is a car key that contains a built-in electronic microchip. When inserted into the ignition, it sends a coded message to the vehicle’s Engine Control Module (ECM) to unlock the …

  3. What is a Transponder Key and How It Works? - Types & Benefits

    May 31, 2025 · When inserted into your ignition, these keys don't just physically turn a lock they communicate electronically with your vehicle's computer system. At the heart of every …

  4. What Is a Transponder Key & How It Keeps Your Car Safe

    Unlike traditional keys that rely solely on mechanical cuts, a transponder key sends a unique radio signal to your car’s onboard computer when inserted into the ignition. If the signal is …

  5. How Does a Key Transponder Work | 10 Easy Methods (2025)

    Dec 24, 2024 · A transponder key is a specialized type of key that contains an embedded microchip programmed to emit a unique signal. When the key is inserted into the ignition, the …

  6. What is a Transponder Key? How Does It Work? - Revolar

    Jan 28, 2025 · How does a transponder key work? The secret lies within what is inside the plastic shell on the key’s handle. As stated above, transponder keys have built-in microchips that …

  7. Understanding Transponder Keys: How Do They Work?

    Apr 24, 2025 · A transponder key is a specialized car key that has a built-in electronic chip. The word “transponder” comes from the combination of “transmitter” and “responder.” This chip …