Remote Key Fob Repairs You Can Do at Home
You might be enticed, in the event that your remote key fob doesn't working, to bring it to a dealer to have it changed. Try a few fixes at your home.
Start by replacing the battery. Flat watch-style batteries are cheap and readily available in hardware stores. Examine the key fob for buttons that are damaged or are not in the right place.

Dead Battery
The key fob is an electronic device that allows you to lock or unlock your vehicle. It uses an electronic radio transmitter that sends codes to a receiver in your vehicle. The batteries in key fobs last for a lengthy period of time, but can die at any moment. You can usually determine if the battery has gone out by examining the LED light or attempting to press one of the buttons. If the key fob will not respond to press, then the battery is dead and needs to replaced.
Change the battery on the key fob is simple and quick. It's usually as easy as opening the key fob, then removing the old battery, and replacing it with a brand new one. Fobs use tiny batteries, similar to those used in hearing aids or watches which are sold at general stores and home improvement centers. They're typically shaped as an ordinary coin and are adorned with plus and minus signs on the bottom. If you're not sure what type of battery your fob takes, consult the owner's manual, or look on the key fob for a label.
After you change the battery, your key fob should perform as expected. If it's not working, there could be another issue with your car or its system that is the reason it isn't functioning correctly. If this is the situation you'll need assistance from a roadside service.
Based on the model and make of your vehicle, you could also be able to order replacement keys through the internet or from a dealership. It's typically cheaper and more convenient to purchase a new key fob than to repair a broken one.
Buttons Aren't Responding
If you have been driving your car for a while and you notice that the keys' buttons aren't working it could be due to an issue with worn out sensor for the button. Rubberized buttons on most fobs can wear out with time. This could cause them to only function properly when they are pushed in a specific way or when pressure is high. This is a common problem for many fobs, and can be solved by following a few DIY steps.
The fob transmits an unlocking signal to the receiver inside the car. If the receiver is damaged it may not receive the signal, and the key will not be able to open or start your car. The best option is to have a local mechanic examine the receiver for damage. In many cases, this will be free or a small fee according to the make of your vehicle.
Key fobs that are frequently used get many uses and are often tossed around in purses and pockets, so it is no surprise that they occasionally be finicky and only work properly when pressed a certain way. It is not difficult to fix most fobs, as the buttons are easily reinforced with silicone and a bit of effort.
To get the buttons to work once more, press and hold the locks and unlock buttons on your key fob until you hear a chime in your vehicle. This should be repeated several times to activate the button. The next step is to turn your key in and out of the car's ignition a few more times to reset the connection between the fob and your car. Once the connection is restored, remove the key and should be able to unlock your car using the remote. Repeat the procedure as needed to ensure that your fob is functioning again. If you cannot fix the fob with this procedure, it may be required to replace it. If you have to replace it, ensure that the new key is programmed to work with your vehicle model and make.
Keychain Loop Breaks
If the loop of plastic on the key fob is damaged it will not be able to lock or unlock your vehicle. Replacing the keychain loop is a simple fix.
Key fobs can also malfunction 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 can solve the issue however, sometimes an expert repair or replacement is necessary.
Key fob buttons can become worn out over time, leading to less functionality or a lack of responsiveness. This could necessitate an entirely new key fob case or replacement of the button, however most of the time, the issue can be resolved by changing the program. Occasionally signals from nearby electronic devices could cause interference between the key fob and your car and cause issues with locking or unlocking. key repairs may be necessary to conduct a diagnostic check at the dealership to determine the cause of. This is usually the case with older electric key fobs that use infrared signals and require a clear line of sight to function however, the majority of modern microchip key fobs rely on radio frequency challenge-response authentication to communicate with your vehicle.
Pairings that are corrupted or lost
Over time, key fob batteries lose their charge. If the battery has lost too much of its power the remote will not respond to commands. Replacing the battery can usually solve the issue, but you may also need to change the programming of the remote.
Key fobs found in modern cars can perform a range of functions. They can raise and lower windows, trigger the alarm, turn on the interior lighting, and even start some vehicles. This means it is possible for owners to hit the wrong buttons through accident. Keep the owner's manual close by when using your key fob to easily refer to the sections that cover your car's features.
Another reason that causes a fob to stop working is that the signal has become damaged or gone missing. Certain of the latest key fobs have sophisticated signal encryption technologies to keep thieves from intercepting the signals and creating unauthorized key fobs or remotes that allow you to unlock your car. You'll likely need to visit an auto locksmith or dealer to re-program your fob and restore its functionality.
Certain automakers offer their own instructions for reprogramming key fobs. These procedures are usually simple enough to be done at home. This procedure is not recommended for novices who don't have a lot of experience with electronics. It is recommended to leave this kind of work to professionals.
Key fobs are subjected to more wear and tear if used and handled regularly. The buttons of a key fob could be pushed, and the case can break or crack. Keep a spare fob with you at all times. This will save you time should your remote break down while you're out and about. It is recommended to keep it near your bed at night because it will permit you to activate the panic button if you hear noises coming from the house during the night.