A Car Seat Replacement Key is a Costly and Time Consuming Process
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Keys that have been stolen or lost are
The replacement of a key is an expensive and time-consuming process. You may also have to pay for a tow or to have your car's chip re-paired.
One way to save money and time is to ensure that you don't lose your keys in the first place. Consider putting a brightly colored or reflective piece of your keychain or painting the bow of your key with a color that is noticeable. It's also an excellent idea to keep an exact copy of your seat replacement key somewhere secure in case you do lose the original.
If you locate your key, take a look at the code engraved on the bow. This can help you determine if it's the correct key for your seat.
Transponder Chip Keys
Transponder keys, also called key FOBs or chip keys (fobs that control your key) are among the most common kinds of car keys. They've been in use for over 20 years and are designed to deter theft by sending a coded message once put into the ignition of your car.
Transponders are microchips that are embedded into the plastic cover on your car keys. When the key is placed into a key FOB car ignition, it transmits a low-level radio signal to the vehicle's Engine Control Unit (ECU). The ECU detects the unique serial number of the chip and responds accordingly - If the signal matches it, the engine is able to start.
While transponder chips don't guarantee security, they're a great way to prevent auto theft. The idea behind these kinds of car keys is actually quite old-fashioned in the past, dating to World War 2 era military planes that used coded messaging to distinguish them from enemy planes.
If you're locked in a car and need an alternative key, a locksmith could easily create a duplicate transponder key for you. This procedure is a bit more complex than rekeying an ordinary key, however, as the chip in your new key must match the car's transponder system. Because of this, buying an identical transponder key from a dealer will typically be more expensive.
Keys Laser Cut Keys
Different from the traditional mechanical cut keys that only permit the key to rotate in only one direction keys cut with lasers have grooves carved out on both sides. This makes them harder to duplicate and can only be inserted into the ignition or lock on either side. car seat key are also referred to sidewinder or transponder keys. They provide more security in the case of theft and are an upgrade from the standard chip key or transponder key.
To make a laser key the locksmith must first identify the cuts on the existing key fob to determine which type of blank needs to be used. The locksmith must then set up the key-cutting machine to cut the key in accordance with the initial cuts. This requires an equipment for cutting keys that is more sophisticated than the wheel-based duplicators that are available in hardware stores.

These keys are more expensive, but they are more secure for your vehicle. Laser keys are not duplicated using the same machines that are used to make a standard edge-cut key. This prevents the practice of "key-jumping," where a vehicle key is programmed for different vehicles, allowing it to unlock the door or start the engine. Keys can only be retrieved by an experienced locksmith or a dealership.