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How to Fix a Key Fob That isn't Working If your key fob won't work, you can fix it by following some simple steps. First, check to make sure it's not your backup remote. If the backup is able to lock and unlock your car doors, it is most likely an issue with the main remote. key fob repair service near me for key malfunctions for car remotes are battery or circuitry issues. Battery It is not uncommon for the battery in a car key fob to get worn out. It is fairly easy to change out the battery, however it is essential to make sure that you use the right type; you can look in the owner's manual or talk to the manufacturer's dealer to find out what kind of battery you require. It's recommended to inspect the battery compartment with care since dead batteries may leak caustic chemicals that can cause damage to the remote. If changing the battery doesn't fix the issue there could be other issues that require attention from a professional. For example, if buttons appear stuck or damaged, it may be necessary to disassemble the remote and rework its parts. You could also try reprogramming your car to recognize the new key fob. Buttons Key fobs may become dirty and worn-out from repeated use. It is not common for buttons to cease working, or to require a long press to make them work. This can be a huge hassle especially if you're away from home and you need to start your vehicle. Fortunately, even worn-out or malfunctioning buttons can often be fixed with a little time and a few items you might already have in the home. First, verify that the batteries are correctly installed and that the indentation on the back of the button has been filled. Then, carefully remove the remote and examine the circuit board. Examine for signs of rust or other indications that the buttons are worn out or damaged, like missing paint that is conductive. Use a Q-tip, dipped in rubbing alcohol to gently clean any membrane contact that is worn-out or where conductive painting is missing. Be careful not to rub too hard, as this can erode the conductive painting and prevent the button from firing when it is pressed. Examine the battery connector's terminals carefully for any loose solder connections. Soldering them back in place can restore the button's functionality If this is the situation. You can follow the same procedure to restore functionality to any other loose connection inside the fob. If any of the rubber buttons located at the front of the keyfob are not functioning or require to be pressing very hard the graphite disks at the back of the button could have worn out and require replacement. This can be done by rubbing a pencil across the disks, which will bring the button back to life. If none of these solutions work or you not be able to get the button respond when you press it hard, it is possible that the circuitry is failing. This can be fixed by a quick clean, and refitting, but it's recommended to have an additional fob available in the event this method does not work for you. Circuitry If the key fob buttons function, the circuit board inside your remote might be dirty. A thorough inspection is often enough to resolve this problem. Broken and damaged cases are the most frequent causes of dirty boards. A damaged case could allow water and other debris to get into the circuit board, causing it to short. Water can also eat away at pins and connectors on the board called via's. If you're able to remove your key fob, and you're not afraid of some mess, we can remove the solder from the buttons and then solder new ones in their place. It's also worth checking the battery terminal connections. 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 putting the button back in their place is generally all that's required to return the key fob that is not working to working order. Non-Remote transponder chips The non-remote chips sealed in a sealed case are more durable than remote fobs. However, they are susceptible to cracking when a hole is made in them, or in the event that a door handle of a car or lawnmower runs over them. The failure of the fuse is usually to blame for non-remote chips failures. If you're not comfortable opening the key fob, you can remove the circuitboard and use a multimeter to check that the diode is operating properly. If you don't feel comfortable with this, you can go to your local Oreilly or hardware store and use their RF frequency tester. This will tell you whether the key fob transmits an RF signal. Programming Key fobs endure a lot of abuse and aren't impervious to damage. They can lose their pairing to the car's receiver due to shock or low battery, which calls for them to be reprogrammed. A professional auto locksmith or main dealer can reprogram your key fob to get it back up and running. If resetting or replacing your keyfob does not work, you may need to replace it.