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How to Fix a Key Fob That isn't Working If your key fob doesn't work, a few easy steps can fix it. First, make sure that it's not your backup remote. If your backup remote cannot lock and unlock the doors of your car, it is likely that the primary remote isn't functioning. The most common causes for key problems with your car remote are battery or circuitry issues. car key repair shop near me inside the key fob may wear out over time. It is simple to replace the battery. However it is crucial to select the right type. You can refer to your owner's guide or contact the manufacturer to inquire about the right type. It is also essential to inspect the battery compartment, as dead batteries can leak caustic chemicals that can harm the remote. If changing the battery doesn't fix the problem, there may be other issues that require attention from a professional. For example, if buttons seem to be stuck or damaged, it may be necessary to disassemble the remote and rebuild its components. You can also try reprogramming the vehicle to recognize the new fob. Buttons Key fobs may become dirty and worn-out from frequent use. This is not unusual, but it can cause buttons to stop functioning or require a long press to function. This can be frustrating especially when you're away from your home and need to switch on your car. Fortunately, even worn out or malfunctioning buttons can often be fixed with a bit of time and a few materials you may already have around the home. First, make sure the batteries are properly charged and that the indentation on the back of the button is filled. Open the remote carefully and examine the circuit board. Look for signs of corrosion or other signs that buttons are worn out or damaged, like missing the conductive paint. Use a Q-tip dipped into rubbing alcohol to gently clean any membrane contact that is damaged or where conductive painting is missing. Be careful not to rub too hard, because this could damage the conductive painting and prevent the button from firing when it is it is pressed. Also, be sure to check the battery connector's terminals for any loose solder connections. Soldering them back in place will allow the button to function again if this is the situation. You can follow the same method to restore functionality to any other loose connection inside the fob. In the end, if any of the buttons made of rubber on the front of the key fob aren't working or require a very long press to function it is likely the graphite disks at the back of the button are deteriorating and require replacement. This can usually be done by rubbing a pencil on the disks. This should bring the button back to life. If none of these solutions work or you cannot get the button to respond when you press it hard, it is possible that the circuitry has failed. It is possible to fix this with a quick clean and replacing the solder, but it is ideal to have a spare fob available in the event 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 work or not. This issue can be fixed by a thorough inspection. Water and broken cases are the most frequent causes of dirty boards. car key fob repairs near me damaged case can let water and other debris into the circuit board, causing it to short out. Water can also get through pins and vias, which are the tiny connectors on the board. If you are handy enough to open your key fob and don't mind making an mess, you can take the buttons out of their sockets and solder in new ones. Also, you should check the connections between battery terminals. They can become extremely filthy and if they're not tight enough, the buttons might not function or even stick in their down position. Soldering the terminals and buttons to their original positions is often enough to return a malfunctioning fob to a working condition. Non-Remote Transponder Chips Sealed non-remote transponder chips are much more durable than remote fobs they are contained in, however they are still susceptible to being broken by a hole being made in them or pushed over by a lawnmowers blade or door handle for a car. Failures of the fuse are typically to blame for non-remote chip failures. If you're handy enough to remove the sealed key fob and are willing to put up with the mess, you can take off the circuit board and test the fuse using a multimeter to ensure that it is functioning as intended. function. If you're not confident doing this, visit your local hardware store or Oreilly's, and they usually have a RF frequency tester that will let you know if the key fob is transmitting a signal. Programming Key fobs aren't indestructible and are susceptible to being damaged by a lot of things. They can lose their pairing to the receiver in your car because of shock or a low battery, requiring the reprogramming. A professional auto locksmith or dealer will be able to reprogram your key fob to get it working again. In the event that resetting or repairing your key fob fails, it could be time to replace it completely.