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How to Repair a Remote Key Even though most remote key fobs boast impressive battery life, they do eventually wear out. Some times it is simple to replace the batteries inside the device, however sometimes the issue could be more serious. One quick fix that may 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 working, you can swap out the CR2025 or CR2032 battery. If not, examine the battery terminals or buttons to determine if there 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 know exactly what kind of battery is used by your fob. If car key immobiliser repair 're not sure if the battery is the issue Try using an alternate key fob and see if you can start or unlock your vehicle using it. If you can, it's probably time to replace the primary fob. If it's not, a professional inspection is required to determine why it's not working correctly. It could be a simple reconfiguration, or it may require other types of repairs. There's also the possibility that your car has lost your fob and isn't something you can fix yourself. Case The plastic housing that covers the outside of a remote is referred to as the case. It is usually equipped with an additional button pad. It is recommended to use the latest case since the original one will likely to be extremely dirty. Additionally, it is vital that the circuit board within the case is correctly placed. The circuit board is what is responsible for controlling the function of the key fob. You can test it using a multimeter 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 could have become loose over time or broken. A careful soldering process to put them back in place can often return the functionality of the keypad unless they snap off completely. Buttons IF your key fob buttons don't work anymore or are difficult to press for any reason, a motormite or dorman remote key housing replacement can be purchased for a low price online for the year, make and model of your. Then, take the circuit board out of the old case and put it into the new one. In some cases you may have to move the board slightly. You can then use aluminum foil using double-sided tape to adhere it to the black contact points on the buttons. Programming The key fob and receiver inside your car are paired however this connection could be damaged. A professional will examine your vehicle to determine its make, year, and model. broken car key repair near me 'll then use specialist equipment to recouple or program the transponder chip with a blank fob (or clone the key if possible). They will then test the remote to confirm that it functions. It is important to be cautious when programming the blank key, because the process is often complicated and different manufacturers have distinct steps. It is easy to skip a step or to wait too long before exiting the programming mode. To reduce the chance of damaging your car it is recommended to work with an expert who has extensive knowledge of the security system of your vehicle. Some key programming tools are also capable of analyzing diagnostic trouble codes from your vehicle. This can aid in repairing or resolving further problems.