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Ten Replacement Key Fobs For Cars Myths That Don't Always Hold
Replacing Key Fobs For Cars

Replacing key fobs can be costly, particularly for those that have various functions or are part of sophisticated security systems. Some fobs also require reprogramming to function with your vehicle.

A lot of dealers charge for key-fob replacement and changing the program, but there are other methods to complete the task for less money. Read on to find out more.

Transponder Keys

A transponder car key might appear similar to keys made of metal, but it is not the identical. The conventional flat blade of metal is replaced by a plastic cap that houses the transponder. This key comes with a distinctive chip that sends signals to the ignition system of the car. This technology prevents cars from starting unless the key located close to the ignition system is programmed correctly.

These keys were introduced in the 90s and are now standard feature on a lot of cars. These keys have significantly reduced the rate of auto theft and have given car owners peace of mind. Certain cars of recent years have integrated key fobs that start the car remotely, as well as open and shut windows at the push of a button.

These newer key fobs are fantastic however they're not impervious to damage. They're frequently dropped, tossed around and exposed to moisture or extreme temperatures, which can cause them to stop working properly. This is why it's crucial to have at least one spare key fob in your pocket at all times in the event that one fails or is lost.

You can often find replacement key fobs for your car by searching the make, model and year of your car on the internet or in the owner's manual. In some instances you can even purchase a replacement key fob direct from the manufacturer. You'll need to go to an authorized locksmith if you own a model of luxury automobile. This is because these types of key fobs are typically more difficult to duplicate and require special programming systems.

Switchblade Keys

No matter how carefully you take care of your key fob, it will eventually require replacement. It is recommended to be prepared and keep some things in mind so that this inconvenience does not catch you by surprise. First, you should always have spares. Two working fobs will cut down the cost of replacing them, and you can save time by being able remotely roll down windows without needing to physically get inside or push buttons.

If your car is relatively new, you can likely find a replacement through a dealer or aftermarket supplier. They will program it to work with your car. The most recent replacements can only be programmed by a dealership, however, because of the complex security systems they have. They are known as "smart keys," and they can cost between $200 and $500 for keys which perform a variety of functions or are part of advanced security systems, like remote start.

Certain fobs are also connected to a smartphone app which can enable features like the trunk release. This is particularly useful when you lose your keys are locked after leaving your home. These kinds of smart keys are generally more expensive and require specialized programming from a dealership. If you're looking to reduce the cost of these models you can purchase fobs from the aftermarket that can be programmed by a locksmith and may be compatible with similar apps. However locksmiths will typically charge you more for the additional labor of installing a smart key. You can also reduce the cost of these keys by lubricating the folding mechanism periodically with silicone-based lubricant. But, be careful not to use too much as you could cause internal damage.

Keyless Entry

Modern cars are equipped with key fobs that enable drivers to open doors and start the engine without having to insert a metal key into the ignition. The key fob is usually tiny and can vary in appearance, depending on the manufacturer of the car. keyless car fob replacement may be connected to the key in metal on Audi and BMW models or be one switchblade in certain Teslas.

When you press a remote button, the key fob emits low frequency signal that contains an unique identification code. The code matches with a similar one that is stored inside a receiver unit in your vehicle, allowing the car to recognize the fob and authorize its use. The fob will communicate with the computer inside the car to switch on the radio or alter the temperature control.

Certain key fobs are programmed to your car through a dealership. It is usually a cost for the dealer to connect special diagnostic tools and program the replacement fob for your specific car. This isn't always feasible however, and locksmiths may be able to offer an affordable solution.

A locksmith in Houston who is specialized in European cars may charge around $200 to program and replace the new key fob for an Audi Q5 o BMW X7. The price may be higher for some other makes. Examine your car's warranty or insurance policy, or if you belong to an auto club, to see if the key fob is covered. Most new-car warranties, which include bumper-to-bumper coverage, cover keys that are damaged or lost. Certain extended warranties or new car financing plans may also provide a replacement key fob.

Remote Start

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

A remote starter is usually cheaper than a key fob, and can be installed by an auto locksmith or at home. Certain models are compatible with vehicles that have manual transmissions and can be upgraded to include additional functions. Some are more expensive, and some are only used on certain models.

Some fobs can also be used to summon a car like Tesla's Summon feature. This feature is not readily available, but it can be useful for those who have limited parking spaces. The fobs in this category often require special programming that's only available at the dealership.

Experts suggest that you purchase fobs that are specifically designed for your make and model. While some companies offer generic universal fobs that work in a variety of vehicles but they're not recommended by most locksmiths because they can cause damage to your vehicle when not properly programmed. They may not function as well, and make it difficult to control your car. Instead, you should purchase a replacement key fob from a professional automotive locksmith or a reputable dealer. It should look and feel like the original and be simple to program. You can find key fobs from the aftermarket that function and look like factory models for less than half the price, depending on your needs.

Trunk Release

Car fobs often have features that extend beyond the ability to unlock or start your vehicle. For example certain models allow you to open the windows, or summon and auto-park the car. This kind of feature typically requires a second fob or an app compatible with your car.

If your vehicle's key fob isn't working it's possible to make use of a basic key to unlock the trunk and get to your items in the back seat or cargo area. The trunk release is a cable that runs along the floor on the driver's side in a majority of cars. The owner's manual or service manual should provide how to locate it. Then, you can reach under the carpet and pull it up to activate the trunk release.


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

Key fobs from the past are generally more expensive than those with newer models, based on the car's model year, year, and model. Some key fobs aren't sold outside of the dealership because the process of preparing them for your car requires technological and security expertise that only the manufacturer can access.

If your key fob isn't working or you've lost it, check your warranty, car-insurance policy, and auto club membership to determine whether they cover the expense. If they don't, Interstate All Battery Center can provide a replacement for an affordable price.

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