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Replacing a Key Fob Modern cars are equipped with key fobs, which permit drivers to remotely start their car and open the doors. They can also set off the alarm. These remote devices look like advanced car keys, with buttons, and they often hide a switchblade key or laser-cut key inside. You can obtain an additional key for your vehicle by visiting the dealership or an automotive locksmith. But, you might also have other options. Here are a few of them. Battery The key fob controls the security features of your car, including remote entry and ignition start. Keyless entry became a common feature in the 1990s and many new models use key fobs as a way to open doors and set off an alarm with the touch of the button. how to get replacement key fob for car can range in prices ranging from $150 to several hundred dollars depending on the features they have. However, replacing a key fob's battery is an easy, inexpensive process, and you can do it without having to visit a dealership. The battery in your keyfob is a shaped coin device. It can be removed from the plastic clip by cutting it. After releasing the clip, you can remove the battery and replace it with a screwdriver. Certain key fobs have a battery which can be removed by sliding it out, but others require more effort to replace. After you have removed the battery that was in use take off any metal or plastic that covers the positive and negative battery posts. The positive post is usually identified by a cover in red and a cable, while the negative will be marked with the use of a red stripe or the use of a sticker. Some older key fobs resemble the appearance of a keychain with buttons that open the door or remotely start your car. These units can often hide the key's physical, cut-able form. The newer fobs, which don't contain a secret key, work differently. They have an electronic transmitter that transmits unique signals that can only be read by your vehicle. If you have a spare key fob, try it to determine whether it can be used with your car's ignition. If not, you'll need to have the fob reset at an authorized dealer. If you have a fob that has more advanced features, such as an LCD display, it could be more expensive, but it will likely be the only way to access your vehicle. Some dealers charge fees for this service, and others have a technician on staff who can do it. Programming A key fob is an electronic device that allows you to unlock your car and start it without the use of the physical key. It is powered by small battery and communicates using radio frequencies with your vehicle. The majority of vehicles utilize an individual code to determine the right frequency to send the right information. If the new fob isn't properly programmed, the vehicle won't recognize it and will not start or open the doors. The programming process is relatively simple for a lot of cars, and most key fobs can be programmed at a locksmith or the dealership. The code for your car is usually found in the owner's manual or can be obtained by a dealer. The correct tools are also required, and can be found at some dealerships and auto parts stores and even certain locksmiths. Some key fobs need to be programmed with the help of specific software systems that can only be accessible through the dealership or a reputable auto locksmith. These programs are utilized to ensure the integrity of the EEPROM system, which stores security codes and other sensitive data on your vehicle's computer. If the wrong software is used it could cause damage to the EEPROM and cause your car to stop working as explained in the latest Consumer Reports article. Experts advise against the temptation to purchase a cheap fob replacement online and try to save money by attempting to program it yourself. You could be putting at risk the security of your vehicle, and you could cause additional problems, such as the fob that is broken or a computer that is not functioning properly. A locksmith will provide you with a brand new key fob and program it for a reasonable price. However, make sure you choose an reputable locksmith that has insurance in case the work goes sideways and your car is damaged. Additionally, it's a good idea to check your warranty, car insurance policy or auto club membership to see whether they'll reimburse you for the cost of replacing a key fob or help pay for any costs associated with the repair. Dealership Traditionally, simple keys made of metal were used to open doors of the car and also to start the car. In the 1990s and beyond, key fobs were more frequently used to facilitate convenience features like the push-button start button and increased security. Today, almost every new car has key fobs as standard equipment. If you own lost a key fob it, the only option to replace it is to visit the dealer, where you'll be required to pay for a new one and get it programmed for your vehicle. This could cost you hundreds of dollars depending on the type of key and its features. The car's manufacturer decides on how much a replacement fob costs, and that can vary depending on the materials used, the brand name keyless entry feature and more. For instance, a fob that is equipped with advanced security features such as rolling code encryption and anti-theft technology will have an increased cost than one that simply allows you to unlock the doors and start the engine. Your warranty or auto insurance club membership could provide an entirely new key fob. In some cases, you can save money by purchasing a key fob from an auto parts store that is similar in appearance and programming as your original one. You can also find affordable and simple-to-program replacement fobs to numerous vehicles from online retailers. Some dealerships only sell fobs that are replacements for the particular car model you drive, and that's often because of their advanced systems. For instance, BMW, Mercedes-Benz and other luxury brands use a special rolling-code encryption that can't be deciphered by aftermarket fobs. If you have an older car that has a simple key fob, you can probably purchase a replacement at around $50 at an hardware store or big-box retailer. You can then replace the battery yourself or request a local locksmith to take care of it for you. The majority of batteries found in car key fobs are in the shape of coins, and they cost $10 or less. This is a straightforward fix. The owner's manual or quick YouTube search will show you how to do this for most models. Parts Store for Auto Parts Store If you are replacing an old-fashioned key that doesn't contain fobs, or you have a key fob and the mechanical car key isn't functioning for reasons other than yours, you can usually save money by visiting your local auto parts store instead of the dealership. They usually stock a wide range of replacement keys, from basic oval or rectangular key fobs to switchblade models. They can also cut keys and program it at just a fraction of the cost of a dealership. The majority of modern cars have fob keys which communicate with the vehicle via radio frequency signals. This technology was invented in the 1990s and enables you to lock and unlock your car's doors, activate the security system, and open the trunk without the need to insert an actual key. Fobs work with a variety of cars but not all. If your fob is not functioning properly, it could be required to replace the entire unit, rather than just the key. You can sometimes buy an alternative fob from retailers like Amazon or eBay or specialist automotive stores but you'll have go to the dealer for the most recent models. This is because these dealers have the equipment needed to prepare the fob and ensure that it's compatible with your particular car. Some fobs that are older — those from cars that were made prior to the '90s and do not have a sophisticated security system -are available at the auto parts store and programmed by following online directions. Consumer Reports says that the most efficient way to save money on a key for your car replacement is by comparing prices before making the purchase. They recommend, for example, checking with your auto insurer and roadside assistance provider to determine whether they are able to assist. You can also attempt to solve the issue yourself, by putting off several days before purchasing an additional key. Extreme cold and hot or even sweat can cause fobs to cease working, so you might be able to cause it back to life if you give it some time to rest. You may also be able repair your fob if you reset it. This is a simple procedure that is described in your owner manual.