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Remote Key Fob Repairs You Can Do at Home You may be enticed if your remote key fob isn't working, to take it to the dealership to have it changed. Try some quick fixes in your home. Start with a replacement battery. Flat watch-style batteries are cheap and easy to find at hardware stores. Look over the key fob to find worn buttons or those that are out of the right place. Dead Battery The key fob, a small electronic device, makes it simple to lock and unlock your vehicle. It utilizes a short-range radio transmitter to transmit distinct codes to the receiver in your vehicle. The batteries in key fobs last for a long period of time, but can be wiped out at any time. You can usually tell if the battery has been drained by looking at the LED light or attempting to press one of the buttons. If the key fob does not respond it means the battery is dead and needs to be replaced. Change the battery on a key fob is easy and quick. It is usually as simple as opening the key fob, then removing the old battery, and replacing it with a fresh one. Fobs have small batteries, similar to those used in hearing aids and watches which are sold in general stores and home improvement centers. They're usually shaped like a small coin and have plus and minus signs on the bottom. If you're not sure of the type of battery your fob takes, consult the owner's manual, or look on the key fob for a label. Your key fob should function normal. If it does not, there may be another problem with your car or the system that is causing the fob not to function properly. If this is the case you'll need roadside assistance. Depending on the model and make of your vehicle, you may be able to buy replacement key fobs online or from a dealer. central locking key repair of a new key fob is the most efficient option, as it can save you time and money compared to fixing the broken one on your own. Buttons Aren't Responding It could be due to a worn button sensor if you've been driving for a long period of time and you notice that your keys don't work. The buttons that are made of rubber on most fobs will wear down with time. This may cause them to only function correctly when pushed in a certain way or under extreme pressure. This is a common problem with a lot of fobs and can be easily solved by following a few DIY steps. To unlock the car the fob sends a signal to the receiver inside the car. If the receiver is damaged, it can stop receiving the signal, and stop the key from working to unlock or start the vehicle. This issue can be solved by having your mechanic inspect the receiver to check for damage. This service is typically free or costs only little, depending on your car's make. It's not surprising that key fobs are frequently used and are often tossed into pockets and purses. They can become a bit finicky, and only work properly when they are pressed in a particular way. It is not difficult to fix most fobs, because the buttons are reinforced by using silicone and a bit of effort. To enable the buttons again, press and hold the lock and unlock buttons on your key fob until you hear a chime from your vehicle. This should be done several times to activate the button. Next, you will need to turn your key in and out of the car's ignition several times more in order to reset the connection between the fob and the car. Once the connection is restored, you can remove the key and should be able to unlock your car using the remote. Repeat the process as needed to get your fob working again. If you are unable to fix the fob with this method, it might be required to replace it. If you have to replace it, be sure that the new key is programmed to work with your vehicle's model and make. Keychain Loop Breaks If the loop of plastic on the key fob breaks it won't function to lock or unlock your vehicle. Replacing the keychain loop is a simple solution. Key fobs may also fail because of water or moisture damage. Symptoms include a reduced range of operation, or no function at all. Drying the key fob and replacing the battery could resolve the problem however sometimes a an expert repair or replacement is necessary. Over time keys fob buttons may wear out and become less responsive or ineffective. It is possible to replace the key fob's button or case however, reprogramming may solve this issue. Occasionally signal interference from nearby electronic devices could interfere with the connection between the key fob and your car which can cause problems with locking or unlocking. This might necessitate a diagnostic test at the dealership to troubleshoot and fix. This is usually the case with older electronic keys that rely on infrared signals to operate and require a line-of-sight. Most modern microchipped keys communicate with your vehicle using radio frequency to authorize a challenge. Pairings that are corrupted or lost Over time, keyfob batteries lose power. If the battery has lost a significant amount of its charge, the remote may no longer respond to commands. The replacement of the battery is usually enough to solve the issue, but you may also have to have the remote reprogrammed. The key fobs in modern cars can be used to control a variety of functions. They can raise and lower windows, turn off the alarm and turn on the interior lighting and even start certain vehicles. This means it can be easy for owners to use the wrong buttons due to accident. Keep the owner's manual close at hand when you use your keyfob to easily reference the sections that cover the car's features. Another reason that causes a fob to stop working is that the signal has been damaged or lost. Some of the newer key fobs use sophisticated encryption techniques to prevent thieves from intercepting the signals and creating unauthorized key fobs or remotes that can unlock your car. To re-program the fob, you will need to visit an auto locksmith or dealer. Some automakers provide their own instructions for reprogramming key fobs. Most of the time, these procedures are easy enough to do at home. This procedure is not recommended for beginners who do not have a lot of knowledge of electronics. This kind of work should be left to professionals. Key fobs are subjected to wear and tear when they're used and handled frequently. The buttons on a fob may be tossed around and the case may crack or break. Keep a spare fob with you at all times. This will help you save time if your remote breaks down while you're out and about. Keep it close to your bed at all times, so you can press the panic button in the event that you hear noises during the night.