Remote Key Fob Repairs You Can Do at Home
You may be enticed in the event that your remote key fob doesn't working, to take it to a dealership to get it changed. Instead, try a few quick fixes at home.
Start with a replacement battery. Flat-watch-style batteries are affordable and easily found at hardware stores. Take a closer look at the fob that you have purchased and look for buttons that are worn or out of place.

Dead Battery
The key fob, which is a tiny electronic device, allows you to lock and unlock your vehicle. It works by using an electronic radio transmitter that sends codes to a receiver in your car. Key fob batteries typically last for a long period of time, but they may die at any time. Check the LED light, or press one of the buttons to see whether it's dead. If the key fob doesn't respond then the battery is dead and needs to be replaced.
Changing the battery in the key fob is simple and quick. key fob repair 's as easy as opening the key fob, removing the old battery and replacing it with a fresh one. Fobs have small batteries, like those used in watches or hearing aids which are sold at general stores and home improvement centers. They're usually shaped like small coins with plus and minus symbol on the bottom. Refer to the owner's guide or the label on your key fob if you aren't sure what type of batteries your key fob is using.
After changing the battery, your key fob should perform as expected. If it's not working it could be because of an issue with your vehicle or the system that's making it not work correctly. If this is the situation, you will need roadside assistance.
You could be able to purchase replacement key fobs from a retailer or online, depending on the make and models of your car. It's typically cheaper and easier to buy a new key fob than to repair a broken one.
Buttons are not responding
It could be due to a worn button sensor if you've driven for a long period of time and you notice that your keys aren't working. Most fobs have rubberized buttons that can wear out over time, which can cause them to only work properly if they are pushed in a certain way or with extreme force. This is a common problem with a lot of fobs and can be fixed by following some simple DIY steps.
The fob sends an unlocking 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. The best way to resolve this is to have your local mechanic check out the receiver for damage. This service is typically free or only costs little, depending on the make of your vehicle.
The key fobs that are used daily get a lot of use and are often jostled around in pockets and purses which is why it's no surprise that they sometimes become finicky and only function properly when they are placed in a specific way. It is easy to fix most fobs, because the buttons are strengthened with silicone and a bit of effort.
Press and hold the lock and unlock buttons on your keyfob until hear the car chime. You'll need to repeat this several times to trigger the button activate. The next step is to rotate your key in and out of the ignition for a couple of times to reset your fob's connection with the car. Once the connection has been restored, you are able to remove the ignition key and then open your car with the remote. Repeat the process until the fob is working again. If you're unable to repair the fob following this process, it may require replacement completely. If you do need to replace it, ensure that the new key is programmed to work with your vehicle's model and make.
Keychain Loop Breaks
If the loop made of plastic on the key fob gets damaged, it will no longer be able to lock or unlock your vehicle. The keychain loop can be easily replaced.
Key fobs may also fail because of water or moisture damage. Signs of this include a diminished range of operation, or no function at all. Drying the key fob and replacing the battery could solve the issue however, sometimes professional repair or replacement is required.
Over time the buttons on key fobs can wear out and become less responsive or ineffective. It could be necessary to replace the key fob button or the case however, reprogramming may solve the issue. Signal interference from electronic devices nearby can sometimes interfere with the connection between the key fob and the vehicle which can cause issues with unlocking or locking. This may necessitate a diagnostic test at the dealership to determine the cause and fix. This is usually the case with older electric key fobs, which operate on infrared signals and require clear line-of-sight to work, but most modern microchip keys use radio frequency challenge-response authentication to connect with your vehicle.
Pairings that are lost or damaged
Over time, key fob batteries lose their charge, and if the battery has lost too much of its power, the remote will no longer respond to commands. This issue is usually fixed by replacing the battery however, it could be necessary to reprogram the remote.
Modern cars come with key fobs that control various functions. They can raise or lower windows, trigger alarms, turn on interior lights, or even start some cars. It is common for car owners to use the wrong buttons. Keep your owner's guide close at hand when you use your keyfob so you can easily refer to the sections that cover the features of your car.
Another reason that causes the fob to cease working is that the remote's signal has been damaged or lost. Certain of the most recent key fobs employ sophisticated technology for encryption of signals to stop thieves from stealing signals and creating unauthorized key fobs or remotes that unlock cars. You'll likely need to visit an auto locksmith or dealer in order to re-program the fob and restore its function.
Some automakers provide their own instructions for do-it-yourself key fob reprogramming. In most cases, these processes are easy enough to be performed at home. However, the process is usually not a good choice for beginners without extensive electronic experience. It is better to leave this sort of work to professionals.
Key fobs are subject to wear and tear if frequently handled and used. The buttons on a fob may be tossed around and the case may break or crack. Keep a spare fob with you at all times. This will help you save time should your remote break down while you're out and out and about. It is recommended to keep it near your bed in the evening because it will permit you to activate the panic button in case you hear noises coming from the house during the night.