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Car Key Fob Repair – How to Get Back on the Road Even If Your Keyless Entry isn't Working Key fobs can experience problems over time, such as a loss of functionality. While some issues may require professional attention, the majority can be resolved at home. Change the battery is often the first step. Most fobs are powered by flat watch-style batteries, which is easily available in hardware or auto parts stores. Dead Battery It can be a real issue when the battery of a key fob goes out. This is especially the case if you are away from home. However, there are options to get back on the road the car's keyless entry isn't working. The first thing to check is to see if the buttons on the key fob are working. If they do, the issue could be with the car's locks instead of the fob. If your keys won't unlock, you may find an electronic slot in the trim around your door handles or on your vehicle (consult the owner's manual). Insert the mechanical key and try again. If this fails to unlock the door, some vehicles come with an application that lets you unlock the door remotely. For example, the FordPass Connect app, myChevrolet mobile app, and myMazda app permit owners to open the doors using smartphones. However, these apps have a monthly fee. It is also important to ensure that your key fob isn't draining your car's battery by being plugged into it. A dead key fob can drain your battery fast, especially if it is used to control your phone or TV while you're watching. A key fob that's low on battery may be started by holding it right up to the start button. This quick fix can save you from having to visit your dealer or certain Interstate All Battery Centers. If your key fob doesn't work try testing it in a car with an electronic starter button. If it doesn't, you may need to replace the battery on your fob. It's a great idea to keep an extra key fob in your backpack or purse. Damaged Buttons If your key fob doesn't have the ability to open doors or start the vehicle remotely, it's possible that one or more of its buttons have been damaged. The key fob may contain an electronic circuit board that has “contact pads” for each button. These tiny pads are covered with an electricity conducting film which wears down over time. This wear can cause your fob to respond more slowly, or even not to respond at all. The contact pad on car keys can be easily replaced with an flathead screwdriver. However, if the key fob is badly damaged or smashed in any way, it may be more difficult to open up the case, and you'll be required to take the fob to an auto repair shop for repairs. It's not uncommon for a key fob to be dropped on hard surfaces, tripped on or exposed to water. car key immobiliser repair of these events can result in physical damage, like breaking the keys and snapping them. This could also alter the internals of the fob which could result in malfunction. This is why it's an ideal idea to keep a spare key fob inside your wallet or pocket in case you break the one you have. If your key fob's buttons aren't responding in the way they should, you should first verify that the battery is in good condition. Key fobs do not require an electronic device. They are powered by the same two-dollar battery that is used in hearing aids and watches. These batteries are available at drug, hardware, and online stores. If the battery is good, the buttons may be dirty or worn out. You can easily clean them using a damp cloth. If they're still not responding, you can try a different key fob to determine if the problem is with yours, or with a specific type of car key fob. If the other fob works it's likely that the key fob you have needs to be reset or even replaced completely. Reprogramming The secret world of car key fobs is much more intricate than what some myths suggest. The basic fobs function using radio frequency signals that are assigned to specific cars. The fobs have to be programmed to unlock and start the vehicle. Reprogramming a key fob not as easy as pressing several keys. It's usually handled by the dealer. Check the owner's manual for specific instructions. Some manufacturers, such as Mercedes have their own proprietary technology that makes sure only the dealership can create the new fob and sync it with your vehicle. However some independent shops provide this service as well, so be sure to check reviews and prices before selecting the right shop. Some car models will erase all other fobs if they are programmed again. This means that you'll have to have any additional fobs programmed by professionals. This is a costly proposition especially if you're only down to just one working fob. Even in the event that the mechanical key will not start the vehicle, it's a good idea to have a backup option that can open the trunk and doors. Be prepared for a frustrating experience if you decide to reprogram your fob yourself. There are numerous guides available online that promise success however, you're likely to be disappointed. A majority of these guides were written by people who have no experience and are based on unsubstantiated claims. remote key fob repair of these guides claim that you can program your car key fob by yourself in just only a few clicks. This is a false claim. The battery is usually held in place by clips made of plastic, which is easily removed. However the circuit board is home to the battery, so you will need to carefully remove the battery with an instrument. You should be able to find the button cell battery. This is usually a small battery for a watch, which you can purchase at most pharmacies or home improvement stores. Replacing the battery is usually a straightforward procedure, and it's always worthwhile to try first before replacing the entire unit. Replacement If the car key fob is damaged or has stopped working it is important to know there are several ways to address the issue. It could be possible to fix the problem quickly by replacing the battery or reprogramming the key fob. However it is possible that a more extensive repair may be needed. A spare fob could be useful in the event that one is lost or taken. Most modern key fobs contain an incredibly small physical key in addition the electronic component they use, which makes them both more expensive and more difficult to replace than traditional keys. Some “smart” fobs even include a remote starter built-in. It's therefore important to understand that it could take up to an hour for a replacement key fob cut and programmed for your vehicle. Fobs communicate with the car receiver using a tiny radio transmitter that is mounted on a circuitboard. Pressing the button triggers the transmitter, and it transmits an RF signal unique to the car's receiver. The receiver is able to recognize and compare the signal with preprogrammed codes. This allows the driver to start the vehicle from a distance without the need to put the ignition key in. If the buttons on your key fob are not responding or working intermittently, they could be damaged by water. You may be able to fix the fob by taking it apart and looking for any damaged or non-responsive buttons. If this doesn't fix the issue, try reprogramming the fob, or buying a new one. Before purchasing a replacement key fob on the internet, consult an expert locksmith or your local dealer to ensure that it's compatible with your vehicle's security systems. Fobs purchased from a third party can be cheaper however, you must study the brands and read reviews before attempting to program them yourself. Certain fobs can be modified by an experienced locksmith and other models require programming equipment that only a technician in the automotive industry or dealer is able to utilize.