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Car Remote Key Repair Modern remotes for cars are useful and convenient, but they can be a hassle when they stop working. There are a few quick solutions to get them back in operation. Replace the battery first. Most fobs are powered by lithium coin cells. They are affordable and easily accessible. Broken Electronics The electronic circuit board in your remote car key transmits and interprets signals to your vehicle. If the board is damaged, the key fob will not work correctly. Unlike battery failure, which is typically quite easy for most drivers to repair at home Damage to the receiver or transmitter of your remote key will require a professional locksmith or your dealer in the car. The majority of remote key fobs powered by a lithium-ion coin batteries, which have a long shelf life. However they will not last for long. Changing the batteries will likely solve your issue, especially those who have had them for a long time. You may be surprised if you've been using your remote for a long time and the buttons do not respond in any way. This is the case even when the batteries are brand new. The buttons on your keyfob are subjected to a lot of bouncing and can break or become unresponsive with time. In this situation, taking off and cleaning the buttons can solve the issue. If the buttons on your remote still aren't responding, you may have to change the programming to match the system of your car. This is typically done by turning the key in the ignition several times with the doors closed. The method will vary based on the car's model and make, but you should be able to find instructions online or ask a professional for help. If the key fob is made of an exterior made of plastic it is possible to take off the cover and pry it apart. Be careful not to damage the buttons or internal components. This is best done using a pair needle-nosed pliers that have longer tips. They can easily grasp small parts. Lubricating pliers using putty, melted tallow or super glue can aid in grabbing delicate parts. This is something an automotive locksmith can use, since improper methods could cause damage to the electronic components. The plastic can be broken in the event that you take the fob apart with force. It is also possible that the buttons that are that are attached to it may break off accidentally if you try to forcefully break it. Faulty transponder chip Transponder chips can fail if you've previously had the ability to start your car using the remote key, but you cannot do it again. This is because your key relies on this tiny electronic component to communicate with the immobilizer system. It sends a signal to the system that your key is legitimate and that you should be able to start the engine. If the chip is unable to correctly transmit this message the immobilizer disables your vehicle. This issue is frequent in older vehicles However, it can occur in modern vehicles also. The transponder chip wears out over time. It is possible to hire a car locksmith replace this component of your key, however this can be expensive. In certain situations your chip could be dead. If this is the case, it will require replacement by a dealer. This is the most costly but necessary option to get your car back on the road. The other possibility is that the chip inside your key has become corrupted that means it no longer communicates properly with the immobilizer system. This could happen if the battery is changed or if your key is physically damaged. A Mesa auto locksmith can resolve this issue, but you may need to go to the dealership to have your key programmed. If you're having problems with your remote key, the first thing to consider is a backup. If this doesn't fix the issue, take apart the key fob and perform a visual examination. You should make sure that none of the buttons appear to be damaged or loose. These components are frequently used and may become loose over time. It is recommended to have them soldered in place by a professional if they are loose. This can often make your key fob. This is especially the case for keys that have been accidentally placed into the wrong ignition lock cylinder. Damaged Battery If you've tried a brand new battery, but the key fob doesn't work, there could be other issues. Fobs are damaged by dropping them or stepping over them, and internal connections, such as the ones that connect the battery terminals in the remote, could be damaged or disconnected. It's possible to reprogram the key fob, and this is something you can tackle yourself if you have a spare fob of the same model and make. Modern key fobs should be programmed to work with the vehicle to ensure that only you can unlock the doors of your car. It's a necessary step to protect your car and prevent others from using your key fob to gain access to your car or cause problems with the electrical system. Some engine error codes, or even normal wear and tear, can corrupt the programming of your key fob. It is crucial to get your key fob reprogrammed correctly by a professional who is equipped with the proper equipment. It's also possible that the problem is with the buttons themselves, which can be a simpler fix than replacing the entire key fob. Key fobs often come with rubberized buttons that could be damaged or loosen up over time. If you see that the buttons do not appear to be damaged, you may need to adjust them manually. It is best to open the key fob and take a look at it, but be cautious. Some key fobs do not have an easy release mechanism. You may require a screwdriver or small tool to pry them apart. Some are sealed and cannot be opened without special tools, so you'll likely need to go to a dealership to have it opened professionally. If try what she says have an extra key fob for the same model and manufacturer use of it to enter the programming mode of your car. Based on the model of your car this could mean closing and locking the doors, turning lights and other electronics off and on and pressing a certain set of buttons in a particular order. Failing Buttons Mechanical damage could be the cause if the buttons on your key fob do not function or require you to press them very hard. The key fob's functionality can be affected by dropping it on concrete or accidentally hitting a button with a sharp object. If this happens you'll need to disassemble the key fob and carefully see if any buttons appear to be broken or out of the right place. A locksmith will fix it for you if that's the case. The failure of buttons can be caused by dirt or crud that is trapped between the buttons. It is important to clean your keys regularly using the help of a cotton swab that has been soaked in alcohol. It may also be necessary to clean the surface of the keys themselves. It is also important to determine if the issue is related to the locks on your vehicle or with the key fob itself. If you don't have a spare key fob to test, think about trying the keys on another vehicle to determine if they work as well. The decision of whether or not the key fob needs to be reprogrammed depends on the condition of its battery. If your key fob fails to function after replacing the batteries, it probably means that the battery terminal contacts are damaged. Pressing the buttons on your key fob too many times when you are out of range, or disconnecting your car battery can also erase the programming of an electronic key fob. If your key fob still isn't working after replacing the battery you must have it reprogrammed for the car. It will depend on your specific vehicle model, but you'll typically require locking and unlocking the doors manually. Simply insert the key into the ignition, set it to accessory, and hit the remote that is wireless. If this is working, the exterior and/or interior lights should light up. It is then possible to test your key fob to confirm that it is programmed with your vehicle. In rare instances keys can not function if there is an issue with the door lock itself.