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Car Remote Key Repair Modern car remote keys are very useful and convenient, but they can be a hassle when they stop functioning. There are some quick solutions to make them work again. Replace the battery first. Most fobs are equipped with lithium coin cells, which are inexpensive and easily accessible. Broken Electronics The remote car key you have an internal electronic circuit board that transmits and interprets signals to your car. The key fob will cease to function in the event that this board is damaged. Unlike battery failure, which is generally fairly simple for most drivers to repair at home damage to the receiver or transmitter of the remote key will require a professional auto locksmith or dealer for your car. The majority of remote key fobs utilize lithium ion coin batteries which have a reasonably long lifespan, but they won't last forever. If you've been using the batteries for a long time, changing them will probably solve the issue. If you've been using your remote fob for a while you may be shocked to discover that the buttons don't respond at all, even when the batteries are new. The buttons on your keyfob are subjected to a lot jostling and may break or become unresponsive over time. In this instance, removing and cleaning the buttons can solve the issue. If remote key fob repair on your remote aren't working, you might require reprogramming it to match your car's system. This is typically done 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 the instructions on the internet or consult a professional. If the key fob is made of plastic you can remove the cover by pulling it off. However, be careful not to damage buttons or other internal components. This can be done with a pair needle-nosed pliers that have longer tips. They are able to grasp small components. Lubricating the pliers using super glue, melted tallow, or putty can assist them to grasp delicate components. This is something an automotive locksmith could use, since improper methods could damage the electronics. The plastic can be broken in the event that you forcefully pry apart the fob. It's also possible that the buttons that are connected to it could snap off accidentally if you try to forcefully break it. Chips in the transponder are defective. If you've been able to start your car using the remote key, but it's not working the next time, it could indicate an issue with the transponder chip. This is because your key relies on this small electronic component to communicate with the immobilizer system. It sends the signal to the system to notify it that your key is valid and you'll be able to start the vehicle. If the chip fails to properly transmit this message, the immobilizer is disabled for your vehicle. This issue is most frequent in older cars, but can also happen in modern vehicles also. The transponder chip wears down over time. This part can be repaired by a car locksmith however it is costly. In some instances the chip may be dead. In this instance the dealer will need to replace it. This will be the most expensive option, however, it is often necessary in order to get your vehicle back on the road. Another possibility is that your key's chip is damaged. This means that it will no longer communicate with the immobilizer. This can happen if the battery is changed or if the key is physically damaged. A Mesa auto locksmith can fix this problem, but you may have to visit the dealership to have your key programmed. If you're having issues with your remote key you must first try a backup. If this doesn't resolve the problem, you should disassemble your key fob and perform a visual inspection. Make sure that no button appears to be loose or damaged. These components see frequent use and are easily lost over time. If they are loose it is recommended to have them reattached by an experienced professional. In most instances, this will return your key fob to full functionality. This is particularly true for keys that have been accidentally placed in the wrong ignition lock. 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 or dropped or stepped on. Internal connections, such as those that connect to the battery terminals of the remote, can also be broken or disconnected. You may need to reprogram your key fob if you don't have a spare that is the same type and model. Modern key fobs must be programmed to match the vehicle to ensure that only you can unlock the car doors. This is a crucial step to safeguard your vehicle and prevent 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. It's important to have your key fob reprogrammed properly by a professional with the appropriate equipment. It's possible that the issue is with the buttons and this could be a less complicated fix than replacing the entire key fob. Most key fobs feature rubberized buttons that get jostled around all the time and could break or get loose. If you are able to 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 key fobs don't have a simple release mechanism. You may need an instrument or screwdriver to pry them apart. Some fobs are sealed and cannot be opened without the use of specialized tools. You'll need to go to a professional to have them professionally opened. If you have an extra key fob from the same model and make use of it to access the programming mode of your car. This may require you to close and lock the doors, switch on and off lights as well as electronics, and then press a set of buttons in a specific order that is unique to your car. Failing Buttons Mechanical damage could be the cause when the buttons on your key fob aren't working or require you to press them hard. The key fob's functionality can be affected by dropping it on concrete or accidentally hitting the button with a sharp item. If this is the case, you'll need to disassemble the key fob and inspect it thoroughly to check whether any of the buttons appear be damaged or are out of their place. If this is the case, a locksmith could repair it for you. Dirt or crud can also cause buttons to fail. It is essential to clean your keys frequently 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. It is also important to determine if the issue lies with your car locks or the key fob. If you don't own an extra key, try the keys in another vehicle to see if the problem is solved. The condition of the battery will determine if you need to change the programming of the key fob. If the key fob you have is not able to 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 frequently when you're out of range or disconnecting your car's battery. If the key fob does not work after replacing the battery you must have it reprogrammed for the car. This will be dependent on the specific type of vehicle, but generally you'll need to manually lock and unlock the doors of your car, insert the key fob into the ignition, rotate it to the accessory position and then push a button on the remote. Usually, the exterior and interior lights will flash when this method has worked. It is possible to test the key fob in order to confirm that it was successfully programmed. In less rare cases, a key fob can be inoperable if there's an issue with the door locks themselves.