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How to Repair a Remote Key While the majority of remote key fobs have amazing battery lives, they'll eventually run out of battery. Sometimes it's as simple as replacing the batteries, but sometimes there are more serious problems. Take the remote apart and clean the buttons. Then move them out and in. These methods could be all you need to get your key fob to work. car remote key repair If the fob continues to functioning you can replace the CR2025 or CR2032 battery. If not, examine the battery terminals or buttons to see if there are any parts that are loose. You should be able to connect the terminals and buttons back in place. However, you'll be required to know which kind of battery is being used in your fob. If you're not sure if the battery is the issue, try using an alternative key fob and see whether you can unlock or start your vehicle with it. If you are able to do so, it's time for a replacement of the primary fob. If not, a professional check is required to determine why it's not working properly. It could be as simple as reprogramming, or it could require other types repair. There's also the possibility that your vehicle forgotten your fob, which isn't something you can fix yourself. Case The outer plastic housing of a remote is referred to as the case. It usually comes with an alternative button pad. It is recommended to purchase the latest case as the original is likely to be very grungy. web page is vital that the circuit board within the case is placed correctly. The circuit board is the main component of the key fob. It is tested using a standard multimeter by setting it to RF (radio frequency) mode and holding a scanner tuned to the same frequency that the key fob operates on close to it, and listening for signals that pulsate upon the button's presses. Another thing to check is the contact points for buttons on the keypad, which might be loose or damaged over time. By carefully re-soldering them back into their original position can usually restore them to full functionality unless they completely snap off. Buttons If the buttons on your key fob aren't working or are difficult to push, you can purchase a new dorman or motormite remote key housing on the internet at a the lowest cost for your model/year/make. Then, simply pop the circuit board from your old case into the new one. You may have to slightly adjust the position of the circuit board for certain models. The black contact points of buttons can be adhered to using aluminum foil and double-sided tape. Programming The key fob and receiver inside your car are connected however, this connection may be damaged. A professional will assess your car to determine its year, make and model. They will then employ specialist equipment to reconnect or program a blank transponder chip or fob (or duplicate the key if that is possible). They will then test the remote to make sure that it functions. When programming blank keys it is crucial to take care. The process can be complex and each manufacturer has distinct instructions. It is easy to skip a step or wait too long to exit the programming mode. To minimize the risk of causing damage to your vehicle it is recommended to employ a professional who has extensive knowledge of the security system in your vehicle. Certain key programming tools can also identify diagnostic trouble codes on your vehicle. This can assist you to repair or troubleshoot other issues.