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How to Repair a Remote Key Although most remote key fobs come with impressive battery lifespan, they eventually get worn out. Sometimes it's as easy as changing the batteries, but occasionally there are more serious issues. Remove the remote from the unit and clean the buttons. Then, flex them in and out. These techniques may be all you require to get your key fob back in working order. Battery Car key remotes are powered by CR2025 or CR2032 batteries and they can be replaced when the fob is functioning. If it isn't then you can remove the fob and inspect the buttons and battery terminals for any signs of looseness or broken parts. It is usually possible to solder the terminals and buttons back in place. However, you will have to know the type of battery is used in the fob. If you're unsure whether the battery is at fault you can use a backup fob to unlock or start your car. If you're able to do so, it's probably time to replace your primary fob. If it's not require replacement, you'll require a professional examine it to find the issue. It could be as simple as reprogramming, or it could require other types of repair. There's also the possibility that your vehicle has forgotten your fob, which isn't something you can fix on your own. Case The case of remote keys is the plastic housing that covers the outside and typically comes with a button pad replacement. It is best to use the latest case as the original will likely to be extremely grungy. Additionally, it is essential that the circuit board in the case is placed correctly. key repair car is responsible for the function of the key fob. It can be tested using a standard multimeter by setting it to the RF (radio frequency) mode and then holding a radio scanner tuned to the same frequency that the key fob uses next to it, watching for pulsing signals when a the button's presses. Check the contact points on the buttons on the keypad. They may be loose over time or have been damaged. Soldering them back in place can often restore them to their original functionality, in the event that they snap completely. Buttons If the buttons on your key fob no longer work or are difficult to press, a dorman or motormite remote key housing replacement can be purchased online for a reasonable price for the year, make and model of your. Then, you can take the circuit board from your old case and insert it into the new one. It is possible to alter the position of the circuit board on certain models. The black contact points of the buttons can be bonded to aluminum foil using double-sided tape. Programming The key fob and receiver inside your car are paired however this connection could be damaged. A professional will assess your vehicle to determine its make, year, and model. They will then employ specialist equipment to reconnect or program the transponder chip with a blank fob (or duplicate the key, if possible). Then they will test the remote to make sure it works. When programming blank keys it is essential to take care. The process is complicated and each manufacturer offers slightly different instructions. It is easy to miss a crucial step or to take too long to exit the programming mode. To reduce the chance of causing damage to your vehicle, it is best to work with an expert who has vast knowledge of the security system in your vehicle. Certain key programming tools can also detect diagnostic trouble codes in your vehicle. This can help you fix or resolve other issues.