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March 16, 2022

How Do Transponder Car Keys Work

Lots of people have been curious about transponder keys and how they work. Why does getting a transponder car key replacement cost more than getting a traditional car key replacement? Can I get a transponder car key replacement from a locksmith rather than a dealership?

Many car owners end up paying their dealership extra to have their transponder keys replaced. However, only a few of them know that they could get the same service from an auto locksmith and save some cash in the process. Unlike dealerships, getting your keys replaced by an auto locksmith service provider like 843 Locksmith takes lesser time.

If you are fascinated by how transponder car keys work, this post is for you.

Transponder Car Keys: What Are They?

Unlike traditional car keys, transponder keys are manufactured using more advanced technology. The name transponder is short for transmitter and responder. However, transponder keys go by several names such as chip keys, etc. One of the pros of chip keys is that it provides an extra layer of security for your car, hence, protecting your vehicle from thieves.

Basically, a transponder key sends a unique code or signal to the car it has been created for. Your car doors will not unlock and its ignition will not start until the signal has been received and authenticated.

How They Work

The automotive transponder system consists of four major components which include; the microchip, the induction coil or antenna ring, an immobilizer, and your vehicle’s Engine Control Module (ECM). When you insert your transponder key into your car’s ignition cylinder and turn it on, the induction coil sends a radio frequency burst. This radio frequency burst releases the microchip to send its identification code through the induction coil or antenna ring. Afterward, the ECM authenticates the code and if it is the right code, it deactivates the immobilizer so that the engine can start.

Once the identification code has been verified by the ECM, your dashboard’s security light will turn off automatically. However, if the security light continues to blink and the engine fails to start, it means that the ECM does not recognize the identification code. If you are sure that you have the right key with you, you may need to contact your local 843 Locksmith to help reprogram your transponder key. In some cases, this issue can be caused by a worn-out ignition. If that is the case, you need to contact a professional mechanic instead.

Do They Need Batteries?

Unlike fob keys, transponder car keys do not require batteries. This implies that you don’t need to worry about being stranded because of dead batteries. Rather, the security system and microchip operate solely on a low-strength radio signal that can only be activated when the key is within proximity with the dashboard.

Final Words

For help with your transponder car key replacement, repairs, or reprogramming, contact 843 Locksmith. We have experienced and dedicated locksmiths that can handle any car make or model. Our quick response mobile team is always available to meet your locksmith needs.

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