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Car Remote Key Repair Modern car remotes are convenient and useful, but can be frustrating if they stop working. There are fortunately, simple fixes that are able to bring them working again. First, you should replace the battery. Most fobs use lithium coin cells, which are inexpensive and readily available. Broken Electronics The electronic circuit board that is in the remote car key transmits and interprets signals to your vehicle. If the board is damaged the key fob won't 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 powered by a lithium-ion coin batteries, which have a long shelf life. However they will not last for long. If you've used the batteries for a long time replacing them is likely to solve the issue. You may be surprised when you've been using your remote for a while and the buttons do not respond at all. This is true even when the batteries are brand new. Since the buttons on your key fob are subject to a lot of jostling, they can sometimes fail or cease to function over time. In this situation, taking off and cleaning the buttons can fix the problem. If the buttons on your remote still don't respond, you may need to reprogramme it to match the system of your car. This is usually done by turning the ignition key a few times while the doors are shut. This will depend on the model and make of your car, but you can find the instructions on the internet or ask a professional for assistance. If the key fob is made of plastic, you can take off the cover by pulling it open. Be careful not to scratch the buttons or internal components. The best tool to accomplish this is needle-nose pliers with longer tips that can better grasp small components. Lubricating pliers with putty, melted tallow or super glue can aid in grabbing delicate components. This is something that locksmiths in the automotive industry can use, since improper techniques could damage the electronics. The plastic can be broken when you attempt to take the fob apart with force. It is also possible that any buttons connected to it could break off accidentally if you forcefully pry it apart. Faulty Transponder Chip If you've been able to start your car using the remote key, but you're not able to do it ever again, it could be a sign of that there is a problem with your transponder chip. This is because the key relies on the small electronic component in order to communicate with the immobilizer system. It sends a signal to the system to inform it that your key is in good condition, and you'll be able to begin the vehicle. If the chip doesn't correctly transmit this signal it will cause the immobilizer to disable your vehicle. This issue is more prevalent in older cars, but it can also occur in newer vehicles. The transponder chip wears out over time. This component can be replaced by a locksmith for cars, but it is expensive. In some instances, the chip in your key could be dead. In this case the dealer will need to replace it. This is the most expensive but essential option to get your car back on the road. Another possibility is that the chip inside the key has become damaged and it is unable to is able to communicate with the immobilizer system. This can happen if the battery is replaced or if your key is physically damaged. A Mesa car locksmith can sometimes fix this, but it may be necessary to visit a dealership if you need to get your key programmed again. If you're having issues with your remote key the first thing you need to try is an alternative. If this doesn't solve the issue, you should take apart your key fob and perform a visual examination. Make sure all buttons appear to be broken or loose. These parts see a lot of use and are easily jostled loose over time. If they are loose it's recommended to have them reattached by a professional. In a lot of instances, this will restore your key fob to full functionality. This is especially true for keys that were accidentally inserted into the wrong ignition lock. Damaged Battery If you've tried a fresh battery, but the key fob doesn't work, there may be other issues. Fobs may be damaged by dropping them or stepping over them, and internal connections, like the ones that connect the battery terminals within the remote, may be damaged or broken. You may have to reprogram your key fob if do not have a spare of the same kind and model. Modern key fobs need to be programmed to match your car and ensure that only you can unlock the car's doors. This is an essential step to secure your vehicle and stop others from using your key fob to gain access to your vehicle 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. car key fob repairs to have your key fob reset professionally by a professional with the right equipment. It's possible that the issue is with the buttons and is an easier fix than replacing the whole key fob. Often, key fobs have rubberized buttons that are jostled around all the time, and may break or loosen. If you can see that the buttons aren't damaged you can try adjusting them manually. It's best to open up the key fob and look at it, but be careful. Certain fobs do not have an easy release mechanism, so you might need a small screwdriver or other tool to break them. Some are sealed and cannot be opened with special tools, so you'll likely need to bring it to a dealer to have it opened professionally. You can use a spare keyfob from the same model and brand to enter the programming mode of your car. This may require you to shut and lock the doors, turn on and off lights as well as electronics, and then press a set of buttons in an order that is specific to your vehicle. Failing Buttons Mechanical damage could be the cause if your key fob's buttons do not function or require you to press them forcefully. Dropping the key fob onto concrete or accidentally hitting a button with a sharp object can affect how well it performs. If this is the case you'll need to remove the key fob and inspect it thoroughly to determine if any of the buttons appear to be broken or are out of the right place. A locksmith will fix it for you if that's the case. Dirt and crud can cause buttons to fail. It is recommended to clean your keys fob using the help of a cotton swab which has been submerged in alcohol. You may need to clean the surface on the keys. It is also important to determine if the issue lies with your car locks or the key fob. If you don't have an additional key fob to test, think about using the keys on a different vehicle to determine if they work as well. If the key fob should be reprogrammed is also dependent on the condition of its battery. If your key fob doesn't function after replacing the batteries the terminal contacts of the battery could be damaged. You can also reset your electric key fob by pressing the buttons too many times when you are out of range or disconnecting the battery in your car. If your key fob still isn't working after replacing the battery you should have it reprogrammed to your car. It will depend on the specific car model, but you'll typically need to lock and unlock the doors manually. Simply insert the key into the ignition, change it to accessory, then hit the remote that is wireless. If this is successful the exterior and/or interior lights should light up. You can test the key fob to confirm that it has been successfully programmed. In rarer cases the key fob could be inoperable due to a problem with the door locks.