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Car Key Fob Replacement Many cars now use key fobs, which allow doors to be locked and unlocked and also allow the car to start. Replacing the standard key fob typically requires a trip to the dealer who will charge according to the model of your car. But Consumer Reports reveals some simple tricks to save you money. Here's how: Battery The first step to take when your key fob is not working is to change its battery. These tiny devices that have taken the place of traditional keys have more going on in them than just buttons that unlock and lock your car. Depending on the frequency at which you press them, they are constantly sending out a coded signal in a distinct sequence that is sent to an inside car receiver to either lock or unlock it. Fobs aren't impervious to damage, however — like any gadget that spends the majority of its time scurrying around in your pockets and purse, they can stop working as they age. If you're lucky, your new-car dealer will sell key fob batteries replacement compatible with your car. If not, you can locate them at a variety of auto parts stores, and at big-box retailers. You'll need a CR2032 battery, which is usually around $2-4 American per pack of two. You'll need to remove the old one from your fob, and then install the new one carefully to ensure that there is no damage to the electronic circuit board. Certain of the more recent fobs come with a small key that can be pulled out in the event that your keys fail to open the door or start the car. This is a great feature, but it could be dangerous for people who are prone to losing their keys. Some people use a wireless remote locking system that relies upon an RFID chip that is embedded in the key fob. If you're having trouble with this, you'll need to contact your car's manufacturer to determine if the chip can be reset, or call an locksmith if you need. If you're able to buy an extra key fob for a price you're comfortable with, you may be able to do the programming yourself. This is usually a cheaper option than buying a new key from the dealer. But, be aware that not all aftermarket replacement key fobs will work with your vehicle and most require specialized equipment for programming. Programming The majority of modern cars are equipped with electronic key fobs which allow you to unlock and start the car remotely. If you lose yours or need an upgrade you may be in a position to program an alternative yourself. The exact process depends on your vehicle model however, the instructions are usually available online. Some owner's manuals also include detailed programming information. Make sure your key fob is equipped with new batteries before you attempt to reprogram it. They are cheap and easy to replace. However, an over-charged battery can interfere with the process. It is recommended to close all doors, because even a door left open could affect how well the fob functions. To reprogram a key fob switch off your vehicle and take the original key from its ignition. Press the lock button on the new fob within a time frame typically between 10 and 30 seconds. The car might respond by turning the locks on and off and switching on the lights, or emitting a chime signal to confirm that the fob was programmed. Repeat this process for any additional fobs you wish to add to the system. Be aware that this method of reprogramming is only applicable to cars that use the same technology. If your vehicle has different types of key fob or has an ignition key made of metal it will require specialized programming that is only done by a dealer. You can save money by hiring an auto locksmith. A lot of dealerships charge a flat rate for this service. They have the equipment to complete the task for less than what you'd pay in the dealership. They may even visit you to complete the job. Ask the dealer what the service will cost and if they have the possibility of a guarantee. Verify your warranty, auto club membership, or insurance policy to determine if they cover any lost fobs. If you're in good contact with your mechanic, they may even inform you of the cost of this service prior to scheduling an appointment. Dealerships You may be enticed if you lose your keys, to visit a dealership to have them replaced. Dealerships may charge more than other locations and may not provide the best price. There are alternatives for getting your key fob replaced, such as locksmiths and hardware stores. These stores are typically cheaper than a dealership and could save you lots of money. vehicle key replacement lets you to unlock and start your car without using traditional keys made of metal. It's usually a rectangular or oval piece of plastic that has buttons that let you lock and unlock your car or set off an alarm or open the trunk. Fobs gained popularity in the 1990s and are now standard on a variety of automobiles. They are a convenient method of opening your car but they can also make it easier for thieves to steal your car. The most popular car key fob type is the push button starter. It is connected to the ignition in your car. They are typically found at an auto parts store or 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 a physical key. A lot of dealerships overcharge prices for key fobs since they know consumers will pay whatever it takes to get their car back. Although it's difficult to find a reasonable replacement for a fob you can save money by choosing the correct replacement battery and utilizing a different method of reprogramming your device. You can replace your key at an independent locksmith who is not associated with a particular car manufacturer, whether you have traditional metal keys, or a smart, electronic key. Many of these locations have a wide selection of replacement keys, and they can cut and program them for much less than the dealers. You can even use a search engine to locate an independent locksmith in your local area. Locksmiths If your key fob has been lost, you'll have to find a professional to replace the item. It may not be as inexpensive as you think, especially if your key fob has a smart feature, such as remote start or automatic locking. Smart keys are used in all modern cars to guard against theft. They work by sending a unique security code every time a key is pressed. These codes aren't stored on the fob, but instead in an embedded chip that communicates with the car to unlock doors and even start the engine. Because of this extra layer of security, it's usually only certified locksmiths or car dealership technicians who have the tools and know-how to reprogram replacements for these types of keys. Based on the model and year, you could have the option of purchasing an entirely new key fob from an hardware store or a locksmith that is specialized in automotive locksmithing for less than it would cost through a dealer. However, you'll probably have to hire a professional to program the fob, which may require the same equipment the dealership uses. Certain automakers offer instructions on do-it-yourself key fob programming online or in their owner's manuals. The steps aren't easy and you may need a second key fob in order to complete the process. It is advisable for both the owners and tenants to have two key fobs that function before they lose one. If your car also has a traditional metal key, you can get a spare at an hardware or key cutting store, as long as the key's metal was not lost in the fob. Fobs with transponders on both the key shank and the fob may require programming by a professional, but this could be costly if you want to make more than one spare or if the key requires replacing. Replacement fobs for German cars that have the “flip” that functions in a similar way to a switchblade, can only be available at the dealership. This is because these fobs operate on transponders that can only be reset or reprogrammed at the service department of the dealer.