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How to Repair a Remote Key Although most remote key fobs come with amazing battery life, they will eventually get worn out. Some times it is simple to replace the batteries inside the device, but in other cases the issue could be more severe. Take apart the remote and clean the buttons. Then bend them in and out. These steps could be all that you require to get your key fob back in working order. Battery If the fob is functioning it is possible to swap out the CR2025 or CR2032 battery. If not, you can look at the battery terminals and buttons to determine if they are any missing parts. Most of the time, the buttons and terminals can be repaired by soldering them back into place, but you'll need to be aware of the exact type of battery your fob uses. If you're not sure if the battery is the problem then utilize a backup fob in order to start or unlock your vehicle. If it's possible, it's probably time to replace your primary fob. If not then you'll require a professional to examine it to find the problem. It could be a simple reprogramming, or it could require other types of repairs. You may also find that your car has lost the fob. This is not something you can fix on your own. Case The plastic housing that covers the outside of a remote is known as the case. It typically comes with an alternative button pad. It is recommended to use an entirely new case because the one you have is likely to be very grungy. Also, it is vital that the circuit board within the case is properly positioned. The circuit board is responsible for the function of the key fob. It can be tested with a standard multimeter by setting it to the RF (radio frequency) mode and holding a scanner tuned to the frequency the key fob uses next to it, watching for pulsing signals when a pressing the button. Another thing to look at is the contact points for buttons on the keypad. They may be loose or damaged over time. By carefully re-soldering them back into their original position can usually restore the functionality of the keypad unless they break completely. Buttons If your key fob buttons are no longer working or are difficult to push, you can purchase a new dorman or motormite remote key housing online at a low cost for your model/year/make. Then, take the circuit board out of the old case and insert it into the new one. On some models you may have to move the board slightly. You can then use aluminum foil with double sided tape to stick to the black contact points on the buttons. Programming The key fob is paired with the receiver in your vehicle and this connection can be corrupted. A professional will inspect your car to determine its make, year and model. They'll then use special equipment to reconnect or program the transponder chip with a blank fob (or clone the key, if possible). Then they will test the remote to make sure it works. It is crucial to be cautious when reprogramming an unprogrammed key, since the process is often complicated and different manufacturers have slightly different steps. It is easy to skip a step or wait too long to exit the programming mode. To avoid repair car keys of damaging your car, it is best to work with a professional who has vast knowledge of the security system in your vehicle. Some key programming tools can also read diagnostic trouble codes in your vehicle. This will help you repair or troubleshoot other issues.