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Car Remote Key Repair Modern car remotes are useful and convenient however, they can be a pain when they stop functioning. There are a few easy fixes to get them working again. Replace the battery first. Most fobs are equipped with lithium coin cells, which are inexpensive and easy to find. Broken Electronics The electronic circuit board that is in the remote car key transmits and interprets signals for your vehicle. If this board is damaged the key fob will not work correctly. Damage to the transmitter or receiver will require an auto-locksmith who is a professional or a car dealer. The majority of remote key fobs utilize lithium ion coin batteries which have a reasonably long shelf life but will not last for long. If you've been using batteries for a while replacing them is likely to solve your problem. You might be shocked if you have been using your remote for some time and the buttons aren't responding at all. This is the case even if the batteries are new. Because the buttons on your key fob are subject to lots of rubbing and rubbing, they may break or become unresponsive over time. If this is the case, removing the buttons, cleaning them, and placing them back in place will usually resolve the problem. If the buttons on your remote not working, you might need to reprogram it to work with the system in your vehicle. This is typically accomplished by turning the ignition key a few times while the doors are shut. This will depend on the make and model of your vehicle, however you can find instructions on the internet or consult a professional. If the key fob is made of plastic, you can take off the cover by pulling it apart. Be careful not to scratch the buttons or other internal components. The best tool for this is a pair of needle-nose pliers with longer tips that can better grasp small components. Lubricating the pliers with super glue, melted tallow or putty can assist them to grip delicate components. It's also a good idea to employ an auto locksmith perform this, as improper methods could cause damage to the electronic components within. The plastic can be broken in the event that you forcefully pry apart the fob. It's also possible any buttons attached to it will snap off accidentally if you try to forcefully break it. Faulty Transponder Chip Transponder chips can malfunction if you have previously successfully started the vehicle using the remote key but haven't been able to do it again. This is because the key relies on the small electronic component in order to communicate with the immobilizer system. It transmits a signal to the system that your key is valid and you should be able to start the engine. If the chip does not properly transmit this message, the immobilizer disables your vehicle. This problem is more frequent in older cars, however it is also a problem in newer vehicles. The transponder chip wears away over time. It is possible to get a locksmith for your car replace this part of your key, but it can be costly. In some cases, the chip in your key might be dead. In car key repair cost will have to replace it. This is the most costly but essential option to get your vehicle back on the road. The other possibility is that the chip in your key has become corrupted that means it no longer communicates properly with the immobilizer system. This could happen if the battery is replaced or if the key has been physically damaged. A Mesa auto locksmith can solve this problem, but you may need to visit the dealership to have your key programmed. If you're experiencing issues with your remote key, the first thing to do is to create a backup. If this does not solve the issue, you can disassemble your key fob to examine it visually. You should make sure that all buttons appear to be damaged or loose. These parts see frequent use and can easily be jostled loose over time. It's best to have them welded in place by an expert when they're loose. In a lot of cases, this will restore your key fob's functionality. This is especially the case for keys that are accidentally placed in the wrong ignition lock cylinder. Damaged Battery If you've tried a brand new battery but the key fob is still unable to function, there could be other issues. Fobs can be damaged by water, dropping them or stepping on them, and internal connections, like those that connect the battery terminals within the remote, may be broken or disconnected. You may have to reprogram your key fob if don't have a spare of the same kind and model. Modern key fobs must be programmed to work with the vehicle to ensure that only you are able to unlock the car doors. This is a vital step to protect your vehicle and stop others from using your key fob to gain access to your car or cause electrical system problems. Some engine error codes or even normal wear and tear can cause problems with the programming of your key fob. Professionals with the right equipment can reprogramme your key fob correctly. It's possible that the problem lies with the buttons and is an easier solution than replacing the entire key fob. Key fobs typically have rubberized buttons that are tossed around all the time and can break or become loose. If you are able to see that the buttons aren't damaged, you could try adjusting them manually. Open the fob that you are using to examine it, but be cautious. Some fobs aren't equipped with an easy release mechanism, and you might need a small screwdriver or other device to open them. Some fobs are sealed, and are not openable without special tools. You'll have to bring them to a dealer to get them professionally opened. You can utilize a spare keyfob of the same model and make to access the programming mode of your vehicle. This may require you to close and lock the doors, switch on and off lights as well as electronics, and then use a set of buttons in a sequence specific to your car. Failing Buttons If your key fob has buttons that don't work or need to be pressed very hard to perform it could be because of mechanical damage. The key fob being dropped on concrete or accidentally hitting a button with a sharp object may impact the way it works. If this happens you'll need to take the key fob apart and carefully determine if any of the buttons appear be damaged or are out of place. If that is the case, a locksmith can repair it for you. Dirt or crud can also cause buttons to fail. It is recommended to clean your keys fob with an swab of cotton that has been soaked in alcohol. You may have to scrub the surface of the keys. You should also determine if the issue lies with your car locks or the key fob. If you don't own a spare key, try the keys in a different vehicle to see if it works. The decision of whether or not the key fob should be reprogrammed depends on the condition of the battery. If the key fob you have is not able to work after replacing the batteries the terminal contacts of the battery could be damaged. Pressing the buttons on your key fob repeatedly while you're out of range or disconnecting your car battery could also deprogram an electric key fob. If the key fob not working after replacing the battery, you should have it reprogrammed by your car. It will depend on your specific vehicle model, but you'll typically require locking and unlocking the doors manually, insert the key into the ignition, set it to accessory, then press the remote that is wireless. Usually, the exterior and interior lights will flash when this has worked. Then, you can test your key fob to ensure that it is programmed with your vehicle. In more rare cases, a key fob can be inoperable if there's an issue with the door lock itself.