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How to Fix a Key Fob That isn't WorkingIf your key fob isn't working A few easy steps can fix it. The first step is to be sure that it's not your backup remote.If the backup is able to lock and unlock your car door, then there is likely an issue with the primary remote. The most common causes of car remote key failure are issues with the circuitry or battery.BatteryThe battery in a key fob can get worn out over the course of time. It is quite simple to change out a battery, although it is important to make sure that you choose the correct type and you can consult the owner's manual or talk to the dealer of the manufacturer to determine the type of battery you require. It is also a good idea to examine the battery compartment carefully because dead batteries can release caustic chemicals that could cause damage to the remote. If replacing the battery does not fix the issue, there may be other issues that require attention from a professional. For example, if buttons appear stuck or broken it could be necessary to disassemble the remote and rework its parts. It is also possible to reprogramme the vehicle to recognize the new device.ButtonsKey fobs can become filthy and worn out due to repeated use. This is not uncommon however, it can cause buttons to stop working or require a very difficult press to get them to work. This can be a huge hassle especially if you're out of town and need to start your car. Fortunately, even worn out or damaged buttons can be fixed with just a bit of time and some of the materials you have in the home.First, check that the batteries are charged correctly and that the indentation on the back of the button is filled. Then, open the remote with care and examine the circuit board. Check for signs of corrosion or other indications that the buttons are worn or damaged, such as missing paint that is conductive. Use a Q-tip dipped into alcohol to gently clean any membrane contact that is worn-out or where conductive painting is missing. Avoid rubbing too hard, as this can erode the conductive paint and block the button from firing when the button is pressed.Check the battery connector terminals for loose solder connections. If this is the case, reconnecting them could restore functionality to the button. The same method can be used to restore functionality to any other loose connections inside the fob.Finally, if any of the buttons made of rubber on the front of the key fob aren't working or require a very hard press to work, it is likely that the graphite disks at the back of the button are deteriorating and require replacement. This can be done by rubbing a pencil over the disks, which will bring the button back to its original state.If none of this is useful, or if the button does not respond to a hard press It could be the case that the circuit board is damaged. This can be fixed by a quick clean and re-soldering, but it is recommended to have an additional fob on hand in the event that this method does not work for you.CircuitryThe circuit board in your remote control could be dirty regardless of whether the buttons on the key fob are working or not. A thorough examination is usually enough to fix this issue. The most frequent causes of dirty circuit boards are water and broken cases. A damaged case can allow water and other debris to enter and short circuit the electronic components. Water can also eat away at pins and connectors that are small on the board, which are known as via's.If you're able to open your key fob and don't mind some mess, we can take off the buttons and solder new ones in their place. key repair near me 's also worth checking the connections between the battery terminals. They can become very filthy and if they're not tight enough, the buttons might not work or may even remain in their down position. Soldering the terminals and button's back into place is typically all that's needed to return the key fob that is not working to working order.Non-Remote transponder chipsThe non-remote chips sealed in a sealed case are more durable than their remote fobs, however they can be cracked in the event of a hole being drilled in them, or if a car door handle or lawnmower runs over them. Fuse failures are usually to blame for non-remote chip failures.If you're able to open the sealed key fob and can tolerate the mess, you can remove the circuit board and check the fuse with an instrument to verify diode function. If you're not sure with this, you can visit your local Oreilly or hardware store and utilize their RF frequency tester. This will let you know whether the key fob is sending an RF signal.ProgrammingKey fobs aren't impervious to destruction and can be damaged by a variety of factors. They may lose their connection to the car's receiver due to shock or low battery, which calls for the reprogramming. A professional auto locksmith or a main dealer can reprogram your key fob and get it functioning again. If resetting or replacing your keyfob does not work it may be necessary to replace it.