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Car Key Fob Replacement Many vehicles use key fobs that allow you to lock and unlock the doors and start your vehicle. Typically, replacing a standard fob will require a visit to the dealership that charges depending on the make of your vehicle. However, Consumer Reports reveals some simple tricks to save you money. Here's how: Battery The first step to take if your key fob is not working is to replace its battery. These devices that have replaced traditional keys, do a lot more than just unlock and lock the car. They emit a sequence of signals based on how many times you press them. This unique signal is then sent to a receiver inside the car, and it locks or unlocks it. Fobs aren't indestructible, though — like any device that spends the majority of its time scurrying around in your purses and pockets they may cease to function when they age. If you're lucky enough, your new-car dealer will have replacement key fob batteries that will work with your vehicle. If they don't, you can find them at many auto parts stores, and at big-box retailers. You'll typically need a CR2032 button cell battery which costs from about $2-4 American for a pack of two. You'll need to remove the old one from your fob before installing the new one with care to ensure that there is no damage to the electronic circuit board. Some modern fobs include an electronic key inside them that you can pull out in the event that the keys fail to open your door or start your engine. This is a convenient feature but can be risky for those who are prone to losing their keys. Some people utilize a wireless remote locking system that is based upon an RFID chip embedded into the key fob. If you're having issues with your car, contact the manufacturer and inquire if the chip can be reset. You can also contact a locksmith. If you're able to buy an extra key fob for an affordable price it's possible to program it yourself. This is typically a less expensive alternative than purchasing a new key from a dealer. Be aware that not all key fobs from aftermarket are compatible with your vehicle and that many require specialized equipment to be programmed. Programming Modern cars are equipped with electronic keys, that allow you to start and unlock the vehicle from a distance. If you lose yours, or require a new one, you might be in a position to program the replacement yourself. The exact procedure is dependent on the model of your car however instructions are typically available online. Some owner's manuals contain detailed programming information. Before you attempt to reprogramme your key fob, ensure that it's got new batteries. They are affordable and easy to replace, however the battery that is exhausted can cause problems with the process. It is also a good idea to close all doors, because even a door left open can impact how well the fob operates. To reprogram a key fob turn off your vehicle and remove the original key from the ignition. Press the lock button on the new fob in a certain time period generally between 10 and 30 seconds. The car might respond by cycling the locks and switching on the lights, or emitting a chime to confirm the fob is programmed. Repeat this process for any additional fobs that you want to add to your car's system. Be aware that this method of reprogramming only works for cars that utilize the same technology. If your vehicle has an alternative key fob or has an ignition key that is distinct from the other, it will require specific programming. This can only be done by a dealer. You can save money by using an automotive locksmith. A lot of dealerships charge a flat rate for this service. They usually have the equipment to accomplish the task at a fraction of the cost you'd pay at a dealership. They might even be able to your location to do the work. Ask the dealer what the service will cost and if they offer the possibility of a guarantee. Examine your warranty or auto club membership or insurance policy to see if they cover any lost fobs. If you have a good relationship with your mechanic, they may even let you know about their pricing for this service prior to making an appointment. Dealerships You may be tempted, if you lose your keys, to go to a dealership to have them replaced. Dealerships might charge more for this service than other locations and they may not be the most affordable option. Hardware stores and locksmiths are two other options to replace your key fob. These stores are typically less expensive than the dealership and could save you lots of money. A car key fob is a piece of technology that lets you unlock and start your car without having to use a traditional metal key. It's usually a rectangular or oval piece of plastic with buttons that let you lock and unlock your car or trigger an alarm, or open the trunk. automotive car key replacement became popular in 1990s and are now common on many automobiles. They can be a useful method to unlock your car, but they also make it easy for thieves to steal your vehicle. The most commonly used car key fob model is the push button starter. It is attached to your car's ignition. They can be located at an auto parts store or a dealership. Other kinds of car key fobs include switchblade keys, which house the metal key inside a piece of plastic, and keyless entry fobs. The latter are most popular as they allow you to unlock and start your car without physical key. Many dealers overcharge the cost of key fobs because they know that customers will pay for any service needed to get their car back. Although it's difficult to find a cheap replacement for a fob, you can save money by choosing the correct replacement battery and using an alternative method of reprogramming your device. You can replace your key with an independent locksmith who is not affiliated with a specific car manufacturer regardless of whether you have a traditional, metal key or a smart electronic key. They offer a broad choice of replacement keys and they can cut and program them for cheaper than dealers. You can use a search engine in order to locate a locksmith that is independent near you. Locksmiths When your key fob goes missing, you'll most likely have to hire a professional to replace it. It may not be as expensive as you think, especially if your key fob has a smart feature, such as remote start or locking that is automatic. Modern cars are equipped with smart keys that are designed to stop theft by sending unique security codes every when a button is press. These codes aren't stored on the fob but rather in an embedded chip which communicates with the vehicle in order to unlock doors and begin it. Because of this additional layer, only locksmiths and car dealership technicians have the tools and knowledge needed to reprogram these keys. Depending on your car's model and year, you may be able to purchase an entirely new key fob from an hardware store or a locksmith that specializes in automotive locksmithing for less than what it would cost through a dealer. You'll still need to hire a professional to program your fob. This could require the same equipment that the dealership uses. Certain automakers provide instructions for self-programming fobs in their user's manuals or on the internet. These steps can be tricky and you may need a second key fob to complete the process. It's prudent for owners and lessees alike to have two functioning key fobs before they experience the disappointment of losing one. If your car has an old-fashioned metal key it is possible to purchase one at an hardware or key cutting store, provided that the key was not lost along with the fob. Fobs with a transponder feature on both the key shank as well as the fob will probably require a professional to program however, which could increase the cost if you need to have more than one spare or if the key has to be replaced. Replacement fobs for German cars with the “flip” which is similar in function to a switchblade, are only available at the dealership. This is because these fobs use transponders that can only be reset or reprogrammed by the service department of the dealer.