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How to Repair a Remote Key Although most remote key fobs have excellent battery life, they'll eventually run out of battery. Some times it is simple to replace the batteries inside the device, but in other cases the problem can be more serious. A quick fix that can aid is to disassemble the remote, cleaning the buttons and moving them in and out. These techniques might be all you need to get the key fob to work. Battery If the fob is working, you can swap out the CR2025 or CR2032 battery. If it's not, you can open the fob and inspect the battery terminals and buttons for any signs of looseness or damaged parts. You can usually solder the terminals and buttons back in place. However, you will be required to know which type of battery is installed in the fob. If you're not sure whether the battery is the problem then utilize a backup fob in order to start or unlock your car. If you can then it's time to replace the primary fob. If it's not then you'll require a professional assess the fob to identify the problem. It could be as simple as reset, or it could require other types repair. There's also the possibility that your vehicle has forgotten your fob that you can fix on your own. Case Study The case of a remote key is the plastic housing that covers the outside and typically comes with the replacement button pad. It is essential to choose a new case as the original will probably be quite dirty, and it is essential that the circuit board is set correctly in the case. The circuit board is what determines the function of the key fob. car key repairs near me can test it by using an instrument set to RF (radiofrequency) mode and a scanner that is tuned to the same frequency as the key fob. Another thing to check is the button contact points on the keypad, which could have become loose or broken in the course of time. A careful soldering process to put them back in their original position can usually restore the functionality of the keypad unless they break completely. Buttons If the buttons on your key fob do not function anymore or are difficult to press for any reason, a motormite or dorman key housing replacement for your remote can be bought inexpensively online for your year/make and model. Then pop the circuit board from your old case into the new one. On some models it may be necessary to adjust the position of the board slightly. The black contact points of the buttons can be adhered to with aluminum foil and double-sided tape. Programming The key fob and receiver in your car are linked however this connection could be damaged. A professional will assess the car to determine the manufacturer, year model, year and model. They will make use of specialist equipment to repair or program a blank fob or transponder chip (or make a key replica in the event that it is possible). Then, they test the remote to make sure it functions. It is essential to be cautious when programming a blank key, as the process can be complicated and different brands require distinct steps. It is also easy to miss a step, or delay too long before leaving the programming mode, which is why it is best to use professionals with extensive knowledge of your car's security system to avoid damaging the car. Some key programming tools can also be capable of analyzing diagnostic trouble codes from your vehicle, which could help repair or troubleshoot additional issues.