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Car Key Button Repair The buttons on keys for cars are subjected to a lot, especially if they are often used. Over time, they can be damaged. There are a few easy fixes that will allow your keys back to working. However, these methods have risks associated with changing batteries or tampering with your key fob. If you are not comfortable with these methods, it's recommended that you consult with a professional auto-locksmith. Change the Battery If you are noticing that your key fob is not working as it should, it could be time to replace the battery. You can buy replacement batteries in any chain drugstore nationwide or in the parts department at your local dealership for cars. Some manufacturers will even include a spare key fob battery in their packaging when you purchase your vehicle from them. It is first necessary to find out what type of battery is used in your key fob. This information is usually available on the manufacturer's website or by looking at the key fob. The most commonly used kind of battery that is found in keyfobs is the button cell that is similar to the ones used in watches and remotes. These batteries are available at Walgreens, Energizer and other stores for less than $5 per pack of two. If you are aware of the type of battery your key fob is using you can open it and take out the old battery. It is possible to open most key fobs using your fingers or a flat tool, like a screwdriver at the seam or notch at which they join. After the key fob has been opened, the battery will come out. You can then replace it with the same orientation. A lot of key fobs are powered by CR2032 batteries. These batteries are available at stores that sell AAA or AA batteries. You can put the two halves back together after you have inserted the new battery and then test the key fob to ensure that all buttons work properly. Pressing the locks and unlock buttons on the key fob while it is pointed at your vehicle will help determine if everything is working in the way it should. If your vehicle is not responding to the key fob, it may be required to reprogram the key fob and establish an internet connection between the two. It's a relatively easy process and requires the use of a phone or other device to perform the procedure. Reprogram your key fob If you're having issues with your key fob and believe it needs a new one It may not be required to replace it. Instead the battery you have may require reprogramming. This procedure is different for every car and the best option is to consult the owner's manual (usually accessible in PDF format on the site of the automaker) or search YouTube for videos that explain how to accomplish this. Modern vehicles require a specific procedure to put the vehicle into 'programming mode,' which usually involves pressing the power button on the driver's side door or ignition a few times while pressing the fob's button within a specific time period. G28CarKeys is how the fob communicates its digital identity code to the car, which saves it in memory. Once the fob has been programmed, it can function like an ordinary key. It is important to remember that changing the programming of a key fob will erase any other key fobs that had been previously programmed. Therefore, if you want to keep other fobs, they must be reprogrammed with care and speed following the initial one. You can sometimes find replacement batteries for a key fob for your car at hardware stores, big-box retailers or on the internet. You will need to know your car's model and make before you purchase a fob because it isn't easy to locate the right battery. A CR editor found a battery that was compatible with the key fob she owned, but it was for a different vehicle. This meant that while she was able to start the car and open the doors, she wasn't able to lower the windows. Fortunately, the dealer can help in this situation, as most of them have the necessary equipment to reprogram a fob to the specific vehicle. Certain European cars, such as those made by Audi and BMW typically require a dealer to get this service because they use special security features that can only be reset by the manufacturer. Some dealers, like those at Toyota and Lexus were willing to reprogramme an alternative key fob if you knew the exact model and year of your vehicle. Replace the Button If you've tried changing the battery, reprogramming your key fob, but still can't start your car it's time to replace the button on the key. The button on your car key is subjected to a lot of pressure and jostling, and it can become stuck or damaged over time. Each press of the button on your key fob emits a different code that is recognized by the car's receiver. If you attempt to operate your vehicle from a distance, it may not recognize you. It might lock the doors or shut off the engine. You can buy replacement buttons online or at several local hardware stores. It is simple to install them and they are very easy to open. Contact an Auto Locksmith It's time to speak with a professional if you are experiencing problems with your car's key button. Auto locksmiths are experts in the repair of electronic keys and locks. These experts are equipped with the tools and knowledge to diagnose and fix various issues with your key fob. This includes replacing batteries and changing the programming. They also have the knowledge and expertise to tackle more complicated tasks such as fixing broken buttons or cutting a replacement key. One of the most common reasons for a car's key button to stop working is because the switch inside it has worn out. Overuse and exposure to elements are the primary causes. The switch is made from hard plastic and has many switches on its surface. Each switch activates the function for which you use the key. As the switch gets older over time, it becomes harder to activate these functions. You will have to apply more pressure to the switch to get it to work. This could cause further damage to the switch and shorten the life span of the switch. Replace the battery in your key fob. You can locate lithium-ion button or coin cell batteries at supermarkets, pharmacies and home improvement stores. After you've replaced the battery, your key fob should be working again. If the issue persists it could be that the contacts on your key fob have become worn out. The contacts are rubber-like and coated with an electric conducting film, which could wear away over time. As you use the key they are exposed to dust and moisture. Eventually, they will get worn down to the point that they no longer make contact with the circuit board or sensor underneath the keypad. The dealership can replace your key fob, but it can be expensive and takes a lot of time. You can also contact an expert locksmith in your area who can repair your key fob at an affordable price.