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How to Fix a Key Fob That isn't Working If your key fob does not work and you're not sure why, you can fix it by following a few simple steps. The first step is to be sure that 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. car remote key repair near me of car remote key failure are issues with the circuitry or battery. Battery It is not uncommon to find a battery on a key fob for cars to get worn out. It is simple to replace the battery. However it is essential that you use the correct kind. You can consult your owner's manual or call the manufacturer to find out the right kind. It is recommended to examine the battery compartment carefully because dead batteries can leak caustic chemicals that can harm the remote. If replacing the battery does not fix the problem, there may be other issues that require attention from a professional. For instance, if the buttons appear stuck or damaged it could be necessary to take the remote apart and rework its components. You can also try reprogramming the vehicle to recognize the new remote. Buttons From repeated use, key fobs can wear out and become dirty. This is not unusual however it can cause buttons to stop working or require a very hard press for them to function. This can be extremely frustrating especially if you're out of town and need to start your vehicle. Fortunately, even worn out or damaged buttons can be fixed with just a bit of time and a few items you may already have around the home. First, check that the batteries have been correctly inserted and that the indentation at the back of the button is filled. Take the remote apart and examine the circuit board. Check for signs of corrosion or other signs that the buttons are worn or damaged, like missing paint that is conductive. Use a Q-tip dipped into alcohol to gently clean any membrane contact that has worn-out or where conductive paint is missing. Do not rub too vigorously in order to damage the conductive paint, and block the button from firing when pressed. Check the battery connector's terminals carefully for any loose solder connections. Soldering them back in place will allow the button to function again in the event that this is the case. You can use the same method to restore functionality to any other loose connection in the fob. If any of the rubber buttons located at the front of the keyfob aren't functioning or require to be pressing very hard the graphite disks at the back of the button may have worn out and need to replaced. It is usually done by rubbing a pen across the disks. This will bring the button back to life. If none of this is helpful, or if the button doesn't respond to a hard push It could be because the circuit board has gone bad. This can sometimes be repaired by a quick clean and refitting, but it's best to have an extra fob on hand in the event that this method does not work for you. Circuitry Whether or not the key fob buttons function, the circuit board inside your remote may be dirty. A thorough inspection will usually resolve this issue. The most frequent causes of dirty circuit boards are water and damaged cases. A damaged case can let water and other debris to enter the circuit board, causing it to short. Water can also destroy pins and small connectors on the board, referred to as via's. If you're able to open your key fob and aren't afraid of making an mess, you can take the buttons out of their sockets and solder in new ones. It's also worth checking the connections between the battery terminals. If they're loose, the buttons may not function or get stuck in their down position. Soldering the terminals and button's back into place is typically 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 the remote fobs that contain them but they can still be damaged by a hole that is drilled into them or run over by a lawnmowers blade or car door handle. The majority of non-remote transponder chip failures could be attributed to a blown fuse. If you're not comfortable opening the key fob, you may remove the circuitboard and utilize a multimeter to check that the diode is operating correctly. If you're not sure with this, go to your local Oreilly or hardware store and test their RF frequency tester. This will tell you whether the key fob sends signals. Programming Key fobs are not indestructible and are susceptible to being damaged through a variety of causes. They can lose their pairing to the receiver in your car 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 and get it functioning again. If resetting or fixing the keyfob is not working it may be necessary to replace it.