A Car Seat Replacement Key is a Costly and Time Consuming Process
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Keys that were stolen or lost are not found
The replacement of a key is an extremely time-consuming and costly process. You may also need to pay for a tow as well as to have your car's chip re-paired.
One method to save time and money is to ensure that you don't lose your keys in the first place. Consider putting a brightly colored or reflective piece on your keychain or painting the bow of your keys a color that makes it stand out. Keep a spare key to your seat in a secure spot, just to be sure.
If you find your key, look at the code engraved on the bow. This will help you determine if it is the correct key for your seat.
The KeyLab , also known as a chip key or key FOB (fob that controls your key) is among the more common kinds of car keys. They've been in use for over two decades and are designed to guard against theft by sending a coded message to your car when it's inserted into the ignition.
Transponders are microchips that are embedded in the plastic cover of your car keys. When a key is fitted into a key FOB or the ignition of an automobile, it sends an extremely low-level radio signal (ECU) to the vehicle. The ECU recognizes the unique serial number of the chip and responds accordingly. when the signal is in line the serial number, the engine will begin.
Transponder chips aren't impervious to theft, but they are a great way of reducing the number of auto theft. The idea behind these kinds of keys for cars is actually quite old-fashioned, dating back to World War 2 era military planes that employed coded messaging to differentiate them from enemy planes.
If you're locked out and need a replacement key, a locksmith will easily create an additional transponder key to you. This process is a little more complex than simply rekeying your standard key, but the chip in your new key must match up with the receiver inside your car's system. Therefore, purchasing an identical transponder key from a dealer can be more expensive.
Laser Cut Keys
Laser cut car keys are carved with grooves on both sides, in contrast to mechanically cut keys which can only be turned one way. This makes them more difficult to copy and can only be inserted into the lock or ignition on either side. Also referred to as sidewinder keys, these are a step up from the transponder key/chip keys that are standard and offer more security in the event of a theft.

To make a laser-cut key the locksmith first analyze the cuts on the existing key fob to determine the kind of blank must be used. Then, they must set up the key cutting machine to cut the key based on the original cuts. This requires the use of a key cutting machine that is more advanced than the wheel-based duplicators found in hardware stores.
These keys are more expensive, however they are more secure for your vehicle. Laser keys are not duplicated with the same machines that make the standard edge-cut keys. This prevents the practice of "key jumping," where a key is programmed to work on various vehicles and allows it to turn the lock and even start the engine. These keys can also only be recovered by a professional locksmith or dealer.