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How to Repair a Remote Key Even though most remote key fobs boast an impressive battery lifespan, they eventually get worn out. Sometimes it's as simple as changing the batteries in the device, but in other cases the issue can be more severe. One quick fix that may aid is to disassemble the remote and cleaning the buttons before stretching them out and in. These techniques might be all you need to get the key fob working. Battery If the fob continues to functioning you can replace the CR2025 or CR2032 battery. If it isn't, you can open the fob and examine the battery terminals and buttons for any signs of looseness or damaged parts. The terminals and buttons can be repaired by soldering them back into place but you'll need be aware of the kind of battery is used by your fob. If you're not sure if the battery is the issue you can try an alternate key fob to see whether you can unlock or start your vehicle with it. If it's possible, it's time to replace your primary fob. If it's not then you'll require a professional examine it to find the issue. It could be a simple reconfiguration, or it may require other types repair. It could also be that your car has lost the fob. This isn't something you can fix by yourself. automotive key repair Study The case of a remote key is the plastic housing that covers the outside and typically comes with a button pad replacement. It is recommended to purchase an entirely new case because the one you have is likely to be very grungy. Additionally, it is essential that the circuit board inside the case is placed correctly. The circuit board is what controls the key fob's function. You can test it using an instrument set to RF (radiofrequency) mode and a radio scanner that is tuned to the same frequency as the key fob. Check the contact points of the buttons on the keypad. They may be loose over time, or even broken. Soldering them back to their original position will often allow them to return to full function, in the event that they snap completely. Buttons If the buttons on your key fob are no longer working or are difficult to push, you can purchase a new dorman or motormite remote key housing online at an affordable cost for the model/year/make. Then, you can take the circuit board from your old case and put it into the new one. You may need to alter the position of the circuit board on certain models. automotive key repair can then apply aluminum foil and double-sided tape to stick to the black contact points on the buttons. Programming The key fob is linked with the receiver in your vehicle and this connection can be corrupted. A professional will examine your vehicle to determine the year, make and model. They'll then use special equipment to reconnect or program an unmodified transponder chip or fob (or copy the key if that is possible). Then they will test the remote to make sure it functions. It is essential to be cautious when reprogramming an unprogrammed key, since the process can be complicated and different brands require slightly different steps. It is also easy to skip a step or delay too long before leaving the programming mode, therefore it is best to use a professional with comprehensive knowledge of your car's security system to minimize the risk of damaging the car. Certain key programming tools can also identify diagnostic trouble codes in your vehicle. This can help you fix or resolve other issues.