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Replacing Key Fobs For Cars

Replacing keys can be costly, particularly for those that have various functions or are part of sophisticated security systems. Certain fobs require to be programmed to function with your vehicle.

A lot of dealers charge for key fob replacement and reprogramming, but there are other ways to complete the task for less money. Find out more here.

Transponder Keys

Although a transponder's key may look like a regular metal car key, it's definitely not the same. In addition to the conventional flat metal key blade it has a molded plastic top on which the transponder is located. This key has a unique chip that transmits signals to the ignition system of the vehicle. This technology will stop cars from starting when the key is within close proximity is properly programmed.

These types of keys were first introduced in the 1990s, and have since been a standard part of many cars. These keys have significantly reduced auto theft rates and have given car owners peace of mind. Certain models are more recent and have key fobs that can be used to remotely start the car and also open and close the windows at the touch of the button.

These newer key fobs are excellent, but they're not indestructible. They're frequently dropped, tossed around and exposed to extreme temperatures, which can cause them to stop working properly. As a result, it's important to have at a minimum, a spare key fob on hand always in case one of them fails or gets lost.

It is common to find replacement key fobs to fit your car by searching the make, model and year of your vehicle online or in its owner's manual. In certain cases you can order a replacement key fob direct from the manufacturer. For luxury car models however, you'll have to go to the local locksmith instead. This is due to the fact that these kinds of key fobs are typically more difficult to duplicate and require specific programming systems.

Switchblade Keys


No matter how meticulously you handle your key fob, it will eventually need to be replaced. To avoid this issue it is advisable to plan and remember some tips. Always keep spares. Two working fobs will lower the amount you pay on replacements and help you save time by letting you remotely roll down your windows, without needing to physically reach into or push buttons.

If your vehicle is new, you can likely purchase a new one from an aftermarket dealer or dealer. They will program it to work with your vehicle. Some of the most recent replacements are only programmed at the dealership due to the complex security systems they have. They are known as "smart keys," and they can cost between $200 and $500 for keys that perform a wide range of functions or are part of sophisticated security systems, such as remote start.

Some of these fobs can also be linked to a smartphone app that allows you to activate features such as the trunk release. This is particularly useful if you forget your keys locked when leaving home. These kinds of smart keys are typically more expensive and require specialized programming from a dealer. It is possible to lower the price of these keys by purchasing aftermarket fobs that can be programmed to compatible with similar applications. A locksmith will charge more to install an intelligent key. You can also reduce the cost of these fobs by regularly lubricating the folding mechanism using lubricant made of silicone. However, do not apply too much, as you could cause internal damages.

Keyless Entry

Modern cars are equipped with key fobs, which allow drivers to unlock doors and start the engine without having to insert a metal key into the ignition. The key fob is usually a small device that can be different in appearance, based on the car manufacturer. It could be attached to a steel key, such as on Audi and BMW models, or it may be an individual switchblade-like device, as in certain Tesla automobiles.

The key fob emits low-frequency signals that contain a unique identification code when you hit a button on the remote. The code is identical to one that is stored in the receiver unit of your vehicle, allowing the car to recognize and authorize the use of the key fob. The fob can also communicate with the car's computer to activate the radio or control the climate control system.

Certain key fobs can be programmed to your car by a dealership. This typically involves a fee for the dealer to connect specialized diagnostic tools and program the replacement fob for your specific car. A locksmith might offer a cheaper alternative if this isn't feasible.

For example, a locksmith in Houston that specializes in European cars could charge around $200 to replace and program the new fob for an Audi Q5 or BMW X7. The price may be higher for some other makes. Examine your car's warranty or insurance policy, or if belong to an auto club, to see if your key fob is covered. Most new-car warranties, which include bumper-to-bumper coverage, cover damaged or lost key fobs. Some extended warranties and new-car financing packages might also cover the replacement of a key fob.

Remote Start

Remote start lets you unlock your vehicle with your key fob, keychain transmitter, or remote starter and remotely start the engine before taking off. It can also be used to defrost a cold windshield or start your engine while you're in a parking lot. These systems are typically connected to the vehicle's ignition, power and brake wires as well as ground wires. The transmitter is a small, wireless device that communicates with your system and transmits signals to the computer in your vehicle to instruct it to turn on.

A remote starter is usually less expensive than a key fob and can be installed by an auto locksmith or even at home. Some are compatible with manual transmission vehicles and can be expanded for additional functions. However some are more costly and can only be used with certain makes and models.

Certain fobs also have the capability of summoning a vehicle, similar to Tesla's Summon function. Although this isn't a common feature, it can be helpful for those who have limited parking spaces. The fobs in this category typically require specialized programming only available at the dealership.

As a rule, experts recommend purchasing fobs that are designed specifically for your particular brand and model. Locksmiths don't suggest universal fobs for all vehicles, even though they work in a variety of vehicles. They can damage your vehicle if they are not programmed correctly. They might not function as well and could make your car difficult to manage. Instead, you should purchase a replacement fob from a trusted dealer or automotive locksmith. It should appear and feel similar to the original one and be programmable. There are aftermarket key fobs that function and look just like factory models for a fraction of their cost, depending on your needs.

Trunk Release

Car fobs usually have features that go beyond unlocking or starting your vehicle. Certain models let you open your windows, call the car and then auto-park it. This type of feature usually requires a second fob or an application that is compatible with your vehicle.

If car key fob replacement fob isn't working however, you can still use a basic key to unlock the trunk and access your things in the back of the seat or cargo area. The trunk release is a cable that runs along the floor of the driver's side in a majority of cars. How to locate it must be explained in the owner's guidebook of your vehicle or in the service manual. You can then reach under the carpet and lift it up to trigger the trunk release.

Key fobs are like traditional car keys but feature a unique chip that communicates with the transmitter that is on the ignition system of the car. This allows for push-button locking and unlocking. Fobs that just open and start the car are called basic keys, whereas those that have a variety of other functions and work with advanced security systems are referred to as smart keys.

Newer key fobs usually cost more than older ones, depending on the year, model and make of your car. Some key fobs aren't sold outside of the dealership since the process of preparing them for your car requires technological and security expertise that only the manufacturer has access to.

If you lose your key fob, or it doesn't work, check to see whether your warranty, auto-insurance policy, or auto club membership will cover the cost. If not, Interstate All Battery Center can provide a replacement for a reasonable cost.

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