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How to Fix a Key Fob That isn't Working If 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 your backup remote is unable to lock and unlock the doors of your car, then it is likely that the main remote isn't working. The most common causes for key malfunctions for car remotes are circuitry or battery issues. Battery It is not unusual for the battery inside the key fob for cars to get worn out. keys repair is easy to replace a battery. However, it is important to select the right type. You can consult your owner's guide or contact the manufacturer to determine the right kind. It's recommended to inspect the battery compartment thoroughly, as dead batteries sometimes release caustic chemicals that could harm the remote. If replacing the battery does not solve the issue there could be other issues requiring professional attention. If buttons are stuck or broken for instance it might be necessary to disassemble the remote and rework each component. You can also try reprogramming the vehicle to recognize the new key fob. Buttons Through repeated use, key fobs can become worn and dirty. key repairs is not unusual to have buttons stop functioning, or require a long press to get them working. This can be a huge hassle particularly if you're away from home and need to start your car. Fortunately, even worn out or malfunctioning buttons can often be fixed with just a bit of time and a few materials you might already have in the house. First, make sure that the batteries are correctly installed and that the indentation on the back of the button is filled. Then, carefully open the remote and examine the circuit board. Examine for evidence of rust, or other indications that the buttons have been damaged or worn. For instance the paint that conducts electricity could be missing. Use a Q-tip that has been dipped in rubbing alcohol to gently clean any membrane contact that has worn-out or has conductive paint missing. Avoid rubbing too hard, since this could cause damage to the conductive paint and block the button firing when it is pressed. Also, carefully check the battery connector's terminals to ensure a loose solder connection. Soldering them back into place will restore the button's functionality If this is the case. You can follow the same procedure to restore functionality to any other loose connection within the fob. If any of the rubber buttons at the front of the keyfob aren't functioning or require to be pressing extremely hard the graphite disks on the back of the button could have worn out and need to replaced. This can be done by rubbing a pencil on the disks. This should bring the button back to its original state. If none of these solutions work, or if you still are unable to get the button to respond when pressed hard, it could be that the circuitry has failed. It is possible to fix this issue by cleaning and re-soldering the fob but you should also have another spare in case it does not work. Circuitry Whether or not the keys fob buttons are functioning, the circuit board inside your remote might be dirty. A thorough examination is usually enough to fix this problem. Water and broken cases are the most frequent causes of dirty boards. A broken case allows water and other debris to enter and short circuit the electronics. Water can also eat through pins and vias, which are tiny connectors found on the board. If you're able to open your key fob and don't mind making a mess, we can remove the buttons from their sockets and put in new ones. It's also worth examining the battery terminal connections. If they're loose, the buttons might not work or even become stuck in their down position. Soldering the terminals, and putting the button back in their place is generally all that's required to return a non-working key fob to working condition. Non-Remote transponder chips Sealed non-remote transponder chips are more durable than remote fobs that contain them but they can be damaged by a hole that is that is drilled into them or over by a lawnmowers or door handle for a car. Fuse failures are usually the cause of non-remote chip failures. If you're handy enough to open a sealed non-remote key fob and are able to bear the mess, you can remove the circuit board and test the fuse using a multimeter to ensure that it is functioning as intended. function. If you're not comfortable with this, visit your local Oreilly or hardware store and utilize their RF frequency tester. This will tell you whether the key fob sends a signal. Programming Key fobs endure lots of abuse and aren't indestructible. They can lose their pairing with the receiver in your vehicle due to shocks or low battery, which calls for reprogramming. A professional auto locksmith or a main dealer will be able to reprogram your key fob to get it back up and running. If resetting or repairing your keyfob does not work, you may need to replace it.