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Car Key Cutting Explained

Cutting keys for cars is more than just bending a piece of metal. It is a complicated process that ensures security, functionality and durability of keys.

It is not uncommon to lose your car keys or have it break off in the lock. To ensure that you are able to always drive your vehicle, you will need a new key cut.

Transponder Keys

Transponder chips will likely be fitted in vehicles built in the last 20 years. These microchips are tiny inside the key's handle that send signals to the car's onboard computer whenever you use it. The onboard computer examines the digital serial number of the chip before allowing the car to begin. locksmith key cutting helps prevent theft of cars, as thieves would need to know your unique serial number in order to have a chance at hijacking it.

The microchip in the key sends a low-level signal the car's receiver. The radio signal activates the microchip, which then transmits an informational code to the car's onboard computer. The car will only begin only if it recognizes the code. This prevents the use of "hot wiring" and other methods of taking cars.

Car keys with chips can be created at an authorized locksmith who offers these services. Some auto dealers like AutoZone offer keys with chips. These stores offer a wide selection of keys, and can help you find the appropriate one for your vehicle. They can assist you in programming the chip in your vehicle, which is required to operate the device.

You can also purchase laser cut keys that are more secure than traditional flat keys. They have the lock cylinder, which is much more difficult to pick, and they can only be duplicated using expensive laser key cutting machines or with specialized software. This type of technology is typically found in luxury vehicles, but it is now available in a variety of affordable automobiles as well.

Another type of car key that's hard to duplicate is the VATS (vehicle anti-theft system) key. These keys have a black resistor on the key blade that is programmed with one of 15 possible values to prevent them from starting a car that it's not meant to. These keys are more expensive to purchase and require a specific key programming machine that is only located at certain locksmiths.

VATS Keys

Before the days of transponder keys and cars equipped with computer chips that control the ignition of the car, GM used something called VATS (Vehicle Anti-Theft System). VATS makes use of a regular key that has a resistor pellet embedded inside it to confirm that the correct key is being used to start the car. The VATS pellet black inside the middle of a VATS key is not a chip like those present in modern smart keys. It is simply a piece of carbon properly sized to carry an electrical resistance that is specific to.

GM employed 15 different resistance values for the VATS pellets. They connected them to the key's blade to ensure that, when the key is turned on in the ignition, a coded signal is transmitted to the module. If the signal is in line with the one of the transistors in a VATS pellet, then the relay in starter circuit will activate and the engine will start to run. This doesn't make a car secure from burglary however, it can deter a thief for at least fifteen to twenty minutes.

Unfortunately, after a long period of usage, the VATS module in your car may start to wear out. Every time a key is inserted into the ignition, it reroutes two small wires within the ignition, and, over time, the wires can start to break. Once enough wires break, the signal to the module gets lost and it won't start the car.

The good news is that you can solve this problem yourself at home by decoding your own VATS key. It's not hard to determine the resistance value of a key by using a multimeter. You can find the resistance value by putting one of the leads on the metal prongs on both sides of your key.


This can also be a good method to test a new key to see whether it will work in your car. Make sure you remove the key from the ignition prior to testing it, or else the new key could have an incorrect VATS number and will not work in your vehicle.

Smart Key Fobs with Smart Keys

Key fobs today do more than simply unlock and start the car. They are also an alarm system and a burglar deterrent, with a lot of them incorporating advanced features that owners may not even be aware of. They can lock and unlock your door remotely and make chirping sounds to help you locate your vehicle in a parking lot, or allow you to call it up by pressing a button. This is more features than you get from a traditional keychain remote. Unfortunately, all that added functionality also means that smart key fobs may be more expensive to replace than traditional keychain remotes and they typically need to be programmed by the dealer.

In fact, some retailers will cost upwards of $100 to replace a single smart key fob. This is a significant amount to pay for a device that spends a lot of its time snagging around in purses and pockets where it is easily dropped, damaged, or exposed to extreme humidity and temperatures. Certain automakers have devised methods to shield smart key fobs from common electronic threats, including relay attacks. These are often combined with remote start hacks which allows thieves to access your vehicle's settings through the transmission of a fake signal from another transmitter near.

One method of protecting the key fob's RFID is to keep it in a metal case or use a specially designed RFID blocking case that blocks the transmission of these signals. However, the necessity of removing the key fob from its case that is protected each time you want to use it is not a good way to enjoy the benefits of the technology.

Some newer policies such as auto club memberships or extended warranties will cover the cost of an additional fob, or reimburse you if it is lost. You can also save money on new car dealership charges and get your fob cut at the hardware store or locksmith that offers key-fob cloning services.

For most drivers who want to buy an extra key fob will depend on the importance of your car's keyless entry and push button starter functions are. It is always advisable to keep an extra key or fob on hand in case you misplace yours. If you have to buy a new replacement, Batteries Plus has a large selection of fobs to fit the majority of cars and trucks. We also offer an efficient, quick service that is roughly 50% less than you'd spend at the dealership.

Traditional Keys

Traditional car keys are a single piece of steel that has a series of grooves cut into it to fit in a specific lock. These keys will unlock your locks and also start the car, provided you haven't exchanged them to a smart or remote key. The only downside of using the traditional car key is that you need to physically insert it into the ignition to start the engine. If your traditional key is lost, damaged or stolen, you'll need to visit a Gainesville locksmith to get a new one made from the blank.

There are several options to select from based on how long it's been since you had your keys cut. Certain keys employ mechanical cutting machines to create copies, whereas others use laser-cut keys made with security features in mind.

Modern keys have advanced features, such as encryption and anti-theft mechanisms. Encryption makes sure that only the right key can be used to start your car, making it more difficult for thieves to duplicate keys or pick locks. Other security features that prevent theft include transponder chips that are embedded in the key to connect with your vehicle and allow it to only function when it's within a specific distance of your vehicle.

If you choose to use a traditional key, your locksmith can create an entirely new key using the standard cutter machine that is available from a variety of hardware stores. This is less expensive than using a key fob or a transponder key, and you'll still be able to operate your doors, locks and trunk.

You could also replace your traditional keys for your car with a laser cut version with a unique pattern. These keys first came out in the 1990s, and are a popular choice for people who want to add extra protection to their vehicles. Laser cut keys are typically equipped with transponder chips that are programmed to work only with your vehicle. If the chips aren't present in your vehicle, it will not respond to the signals generated by the key.

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