How to Fix a Key Fob That isn't Working<br /><br />If your key fob won't work and you're not sure why, you can fix it with just a few steps. The first step is to make sure that it's not your backup remote.<br /><br />If the backup can lock and unlock your car doors then there is likely an issue with the main remote. The most frequent causes of key problems with your car remote are battery or circuitry issues.<br /><br />Battery<br /><br />The battery inside the key fob could get worn out over the course of time. It is quite simple to replace the battery, however it is important to ensure you choose the correct type that you can refer to your owner's manual, or contact the dealer of the manufacturer to find out the kind of battery you need. It is also a good idea to inspect the battery compartment with care since dead batteries may leak caustic chemicals that can harm the remote. If changing the batteries does not solve the issue it could be because there are other issues that require attention by a professional. For instance, if the buttons appear stuck or broken It may be necessary to disassemble the remote and rebuild its components. You could also try reprogramming the vehicle to recognize the new device.<br /><br />Buttons<br /><br />Due to frequent use, key fobs could get dirty and worn. This is not unusual, but it can cause buttons to cease functioning or require a long press to function. This can be a hassle, especially when you are away from home and need to start your car. Fortunately, even worn out or malfunctioning buttons can often be fixed with a little time and some of the materials you may already have around the house.<br /><br />First, make sure the batteries are properly charged and that the indentation on the back of the button is filled. Then, carefully remove the remote and inspect 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 that has been dipped in alcohol to gently clean any membrane contact that has worn-out or has conductive paint missing. Be careful not to rub too hard, since this could cause damage to the conductive painting and prevent the button from firing when pressed.<br /><br />Check the battery connector terminals carefully for any loose solder connections. Soldering them back into place can restore the button's functionality If this is the case. You can apply the same procedure to restore functionality to any other loose connection inside the fob.<br /><br />In the end, if any of the buttons made of rubber on the front of the key fob have stopped working or require a long press to function it is likely the graphite disks that are on the back of the button are deteriorating and require replacement. This can be done by rubbing a pencil on the disks, which will bring the button back to its original state.<br /><br />If none of this is useful, or if the button does not respond to a hard push, then it may be that the circuit board is damaged. This can sometimes be repaired with 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.<br /><br />Circuitry<br /><br />If the key fob buttons function, the circuit board inside the remote could be dirty. A thorough examination is often enough to resolve this issue. Broken cases and water are the most common causes of dirty boards. A damaged case allows water and other debris to pass through and short out the electronics. Water can also damage pins and vias, which are tiny connectors that are found on the board.<br /><br /><br /><br />If you are handy enough to open your key fob and don't mind making an mess, you can remove the buttons from their sockets and then solder new ones. Also, it's worth checking the connections between the battery terminals. They can become extremely dirty and if they're loose, the buttons might not function or even stay in their down position. Soldering the terminals back to their proper positions is usually enough to return a malfunctioning fob to working.<br /><br />Non-Remote transponder chips<br /><br />The sealed non-remote chips are more durable than remote fobs, however they are susceptible to cracking if a hole is drilled in them or when a door handle for a car or lawnmower runs over them. Most of the time, non-remote transponder chip malfunctions could be attributed to an exploded fuse.<br /><br />If <a href="https://www.g28carkeys.co.uk/rushden-auto-locksmiths-near-me/">car key repair cost</a> enough to open the sealed key fob and are willing to put up with the mess, you can easily remove the circuit board and examine the fuse using a multimeter for proper diode function. If you're not confident doing this, visit your local hardware store or Oreilly's and they will usually have an radio frequency tester that can tell you whether the key fob is sending signals.<br /><br />Programming<br /><br />Key fobs are subject to many abuses and aren't indestructible. They can lose their pairing to the car's receiver due to shock or a low battery, which calls for the 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 replacing the keyfob is not working it may be necessary to replace it.<br /><br />
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