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How to Repair a Remote Key Even though most remote key fobs come with an impressive battery lifespan, they eventually wear out. Sometimes it's as simple as replacing the batteries, however sometimes there are more serious problems. Take the remote apart and clean the buttons. Then bend them out and in. These techniques may be all you need to get your key fob back in working order. Battery Car key remotes are powered by CR2025 or CR2032 batteries, and they can often be swapped out in the event that the device is functional. If not, you can look at the battery terminals and buttons to determine if there are any parts that are loose. You can usually solder the buttons and terminals back in place. However, you'll need to know what type of battery is used in your fob. If you're unsure if the battery is the issue then utilize a backup fob in order to unlock or start your vehicle. If you can, then it's time for a replacement of the primary fob. If it doesn't then you'll require a professional inspect it to determine the issue. It could be as simple as reconfiguration, or it may require other types of repair. There's also the possibility that your vehicle forgotten your fob and isn't something you can fix yourself. Case The case of a remote key is the plastic housing that covers the outside and typically comes with the button pad that is replaced. It is crucial to get a new case, as the original case is likely to be a bit shabby and it is vital that the circuit board is installed properly in the case. The circuit board determines the function of the key fob. You can test it using a multimeter set to RF (radiofrequency) mode and a scanner that is tuned to the same frequency as the key fob. Another thing to examine is the button contact points on the keypad. They might be loose or damaged in the course of time. A careful soldering process to put them back in their original position can usually restore them to their original function unless they completely snap off. Buttons If your key fob buttons are no longer working or are difficult to push, you can purchase a replacement dorman or Motormite remote key housing on the internet at a a low cost for the model/year/make. Then, you can take the circuit board from your old case and put it into the new one. On some models you may have to adjust the board's position slightly. The black contact points of the buttons can be adhered to aluminum foil using double-sided tape. Programming The key fob is connected with the receiver inside your vehicle. This connection can become corrupted. A professional will examine the car to determine the manufacturer, year model, year and model. They will use specialist equipment to re-pair or program an empty fob or transponder chip (or clone a key if this is possible). They will then test the remote to ensure that it works. When reprogramming blank keys it is essential to be careful. The process can be complex and each manufacturer has different instructions. repair key The Key Lab is also possible to skip a step or wait too long before exiting the programming mode, so it is recommended to work with a professional with comprehensive knowledge of the security system of your vehicle to minimize the risk of damaging your car. Certain key programming tools can also detect diagnostic trouble codes on your vehicle. This will help you repair or troubleshoot other issues.