A Car
seat keys Replacement Key is a Costly and Time Consuming Process
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Keys lost or stolen
Key replacement is an expensive and time-consuming process. You may also have to pay for a tow and to have your car's chip re-paired.
Preventing the loss of your keys is a great method to save time and money. Consider adding a brightly colored reflective piece of your keychain or painting the bow of your keys a color that stands out. Keep a spare key on your
seat key fob in a secure location, just to make sure.
If you do find your lost key attempt to identify it by looking at the number of characters stamped on the bow of the key. This information can help you determine if it's the right key to fit in your
Seat Leon Spare Key.
Transponder Chip Keys
The transponder key, also known as chip keys or key FOB (fob that controls your key) is one of the more common types of keys for cars. They've been around for over two decades and are designed to guard against theft by transmitting an encrypted message to the car when it's put in the ignition.
Transponders are microchip that is embedded inside the plastic cover of your car key. When a key is placed into a key FOB, or the ignition of a car, it sends an extremely low-level radio signal (ECU) to the vehicle. The ECU detects the unique serial number of the chip and responds accordingly - when the signal is in line it, the engine is able to start.
Transponder chips might not be impervious to theft, but they are an effective way to reduce auto theft. The concept behind these kinds of keys for cars dates back to World War 2 military planes that used codes to differentiate them from aircrafts of the enemy.
If you're locked out, and require a replacement key, a locksmith can quickly create a duplicate transponder keys for you. This procedure is more complex than simply rekeying a regular key, however, as the chip inside the new key has to match with the receiver in your car's system. This is why getting a duplicate transponder key from a dealer can be more expensive.
Keys Laser Cut Keys
Unlike the standard mechanical cut keys that only allow the key to rotate in one direction the laser cut keys have grooves carved out on both sides. They are more difficult to duplicate and are only placed in the ignition or lock from either side. They are also referred to as sidewinder or transponder keys. They provide more security in the case of theft and are an upgrade from the standard chip key/transponder key.
To make a laser-cut key, the locksmith must first identify the cuts on the existing key fob to determine the type of blank needs to be used. The locksmith must then set up the machine that cuts keys to cut the key in line with the initial cuts. This requires a more sophisticated key cutting machine than traditional duplicators based on wheels that are sold in hardware stores.

Although they are more costly than regular keys, they can provide additional security for your vehicle. This is due to the fact that a laser key cannot be duplicated using the same machines that are used to create standard edge-cut keys. This means that it is not possible to practice "key-jumping," where a key for a vehicle is programmed to work with different vehicles and allows it to unlock the door or start the engine. These keys can also only be retrieved by a professional locksmith or dealer.