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How to Repair a Remote Key While most remote key fobs come with amazing battery lives, they'll eventually get worn out. Sometimes it's as simple as changing the batteries, however sometimes there are more serious problems. A quick fix that can help is dismantling the remote and cleaning the buttons before moving them in and out. These techniques may be all that you require to get your key fob working properly. Battery If the fob is still functioning you can replace the CR2025 or CR2032 battery. If not, you can look at the battery terminals and buttons to determine if there are any parts that are loose. Often the terminals and buttons can be repaired by soldering them back into place but you'll need know exactly what kind of battery is used by your fob. If you're not sure if the battery is the issue, try using a backup key fob to see whether you are able to start or unlock your vehicle with it. If it's possible, it's time to replace your primary fob. If not, a professional inspection is necessary to determine the reason it's not working correctly. It could be as simple as reprogramming, or it could require different types of repairs. It could also be that your vehicle has lost the fob. you can try this out isn't something you can do by yourself. Case The plastic housing that covers the outside of a remote is known as the case. It typically comes with a replacement button pad. It is crucial to get an entirely new case since the original case is likely to be a bit shabby and it is crucial that the circuit board is set correctly in the case. The circuit board is responsible for the function of the key fob and is tested using a standard multimeter by setting it to RF (radio frequency) mode and holding a radio scanner tuned to the same frequency the key fob operates on next to it, watching for pulsing signals upon button presses. Another thing to check is the button contact points on the keypad. They could be loose or damaged in the course of time. By carefully re-soldering them back into place can often return the functionality of the keypad unless they break completely. Buttons If your key fob buttons are no longer working or are difficult to press, you can buy a new dorman or motormite remote key housing online at an affordable cost for the model/year/make. Then, pop the circuit board out of the old case and into the new one. For certain models, you may need to adjust the position of the board slightly. The black contact points of the buttons can be bonded to with aluminum foil and double-sided tape. Programming The key fob and receiver inside your car are linked, but this connection can be ruined. car key repair company will assess your vehicle to determine the year, make and model. They will then use specialist equipment to reconnect or program the transponder chip with a blank fob (or copy the key, if possible). They will then test the remote to ensure that it works. When reprogramming blank keys it is essential to take care. The process can be complicated and each manufacturer offers different instructions. It is also possible to miss a step, or wait too long before exiting the programming mode, so it is recommended to hire professionals with extensive knowledge of the security system of your vehicle to minimize the risk of damaging the car. Some key programming tools can also be capable of analyzing diagnostic trouble codes from your vehicle, which can assist in fixing or resolving any further problems.