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How to Fix a Key Fob That isn't Working If your key fob isn't functioning A few easy steps can be taken to fix it. The first step is to be sure it's not the backup remote. If the backup is able to lock and unlock your car doors, then there is likely an issue with the primary remote. The majority of car remote key malfunctions result from circuitry or battery problems. Battery The battery inside a key fob can wear out over time. It is relatively easy to change out batteries, but it is crucial to ensure that you choose the correct type; you can look in your owner's manual or contact the manufacturer's dealer to determine the type of battery you need. It is also crucial to examine the battery compartment, since dead batteries can leak caustic chemicals that can harm the remote. If replacing the battery does not solve the issue, there may be other issues requiring professional attention. For example, if buttons appear stuck or damaged It may be necessary to take the remote apart and rebuild its components. It is also possible to reprogramme the vehicle to recognize the new device. Buttons Key fobs may become filthy and worn out due to frequent use. It is not common for buttons to stop working, or to require a long press to get them working. This can be very frustrating particularly if you're out of town and need to start your car. Fortunately, even worn out or damaged buttons can be fixed with a little time and some of the materials you might already have in the house. First, check that the batteries are correctly placed and that the indentation at the back of the button has been filled. Then, carefully open the remote and examine the circuit board. Look for key fob repair service of corrosion or other signs that the buttons are worn out or damaged, such as missing paint that is conductive. Then, using a Q-tip dipped in alcohol to gently clean any membrane contacts that have become damaged or have conductive paint missing. Don't rub too hard in order to damage the conductive paint and stop the button from firing when it is pressed. Also, be sure to check the battery connector's terminals for an unattached solder connection. If this is the case, simply reconnecting them may restore functionality to the button. The same method can be used to restore function to any loose connections inside the fob. If any of the rubber buttons located at the front of the keyfob isn't working or require being pressing extremely hard the graphite disks on the back of the button might have worn out and require replacement. This can usually be done by rubbing a pencil over the disks, which will bring the button back to life. If none of these solutions work, or if you still not be able to get the button respond when pressed hard, it could be that the circuitry is failing. This can sometimes be repaired by a quick clean and re-soldering, but it is best to have an extra fob in case this method does not work for you. Circuitry The circuit board of your remote control may be dirty regardless of whether the buttons on the key fob function or not. This problem can be resolved by a thorough inspection. Broken cases and water are the most frequent causes of dirty boards. A damaged case can allow water and other debris to enter the circuit board, which can cause it to short out. Water can also damage pins and small connectors on the board called via's. If you're able to open up your key fob and don't mind making a mess, we can take off the buttons and then solder new ones in their place. It's also worth checking the battery terminal connections. They can get very dirty and if they're loose the buttons might not work or even stay in their down position. Soldering the terminals, and putting the button back in their place is generally all that's needed to return keys that are not in functioning condition. Non-Remote transponder chips The non-remote chips sealed in a sealed case are more durable than remote fobs, but they are susceptible to breaking when a hole is made in them or when a door handle for a car or lawnmowers plows over them. The majority of non-remote transponder chip malfunctions can be blamed on an exploded fuse. If you're able to open up a key fob that is sealed and are able to bear the mess, you can easily remove the circuit board and test the fuse using an instrument to verify diode function. If you're not confident doing this, go to your local hardware store or Oreilly's, and they usually have an radio frequency tester that can determine whether the key fob sending a signal. Programming Key fobs are subject to a lot of abuse and aren't impervious to damage. They can break their connection with the receiver in your vehicle due to shocks or low battery, requiring changing the program. A professional auto locksmith, or the main dealer can reprogram the keyfob to get it functioning again. If resetting or repairing your key fob fails it may be necessary to replace it.

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