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Car Key Button Repair Car key buttons endure lots of abuse particularly if they are used frequently. This can lead to them becoming faulty over time. There are a few simple fixes that will allow your keys back in working order. However, these methods have risks associated with changing batteries or altering your key fob. If you're not comfortable with these methods, it is recommended to seek advice from an expert auto-locksmith. Change the Battery It could be time to change the battery if your key fob no longer works as it should. You can find replacement batteries in any chain drugstore nationwide or at the parts department at your local dealership for cars. G28CarKeys include a spare key fob battery in their packaging when you purchase a car from them. The first thing you'll have to do is find out what kind of battery your key fob uses. This information is typically found on the manufacturer's website or by examining the key fob. The most commonly used type of battery found in the keyfob is the button cell, which is similar to those found in watches and remotes. These kinds of batteries are found at stores such as Walgreens and Energizer, and are available at less than $5 for a package of two. You can remove the old battery from your key fob after you know what kind of battery it has. It is possible to open most key fobs using your fingers or a flat tool like a screwdriver, at the notch or seam where they connect. After the key fob is been opened the battery will be released. It is then possible to replace it in the same orientation. Many key fobs are powered by CR2032 batteries. These batteries are sold at retailers who sell AAA or AA batteries. You can snap the two halves back together after inserting the new battery, and then test the key fob to ensure that all buttons work properly. Pressing the lock and unlock buttons on the key fob while pointing it towards your vehicle will help determine whether or not everything is working as it should be. If your car doesn't respond to the key fob, you may need to reprogram the fob to establish a wireless connection. This is a easy process that requires your phone or a different device. Reprogram the Key Fob If your key fob doesn't work and you believe it's time to replace it, it may not need an entirely new battery, but rather the old one needs to be changed. This procedure is different for every car and the best option is to read the owner's manual (usually available in PDF format on the automaker's website) or look on YouTube for videos explaining how to go about this. The majority of modern automobiles require a particular procedure to put the vehicle in “programming mode,” which usually involves pressing the power button on the driver's side door or ignition several times while pressing the fob's button within a certain time frame. This is how the fob communicates its digital identification code to the car, which saves it in its memory. The fob will work like a regular key after it is programmed. It's important to note that reprogramming a key fob will wipe out any other key fobs that have been programmed previously. Therefore, if you want to keep other fobs, they must be carefully and swiftly reprogrammed following the initial one. There are a few replacement batteries for your car key fob at hardware stores, big-box retailers or online. However, you need to be aware of the make and model of your car prior to purchasing a battery for your fob because the correct type of battery can be tricky to find. A CR editor stumbled across a battery for her key fob, however, it was from an entirely different vehicle. This meant that although she was able to start the car and unlock the doors, she wasn't able to lower the windows. Fortunately, dealers can help in this situation in this case, since they have the tools needed to reprogram a fob to the specific vehicle. Certain European automobiles, like those made by Audi and BMW typically require an authorized dealer for this service due to the fact that they have special security features that can only be reset by the manufacturer. Some dealers, like those at Toyota and Lexus were willing to reprogram an alternative key fob in the event that you could identify the exact model and make of the car you own. Replace the Button If you've tried changing the battery, or reprogramming your key fob, but you're still unable to start your car, it's time to replace that button on your key. The key on your car receives a lot of use and jolting over time and may get stuck or damaged. Every time you press the button on your key fob the unique code is sent in a sequence that the receiver inside the vehicle is able to recognize. If you try to operate your vehicle from a distance, it may not recognize you. It could close the doors or turn off the engine. You can buy replacement buttons online or in numerous local hardware stores. It is simple to install them and they are very easy to open. Contact an Auto Locksmith If you're experiencing a problem with your car key button it could be time to consult the experts. Auto locksmiths specialize in the repair of electronic car keys as well as their associated locks. These experts have the tools and know-how to determine and fix issues with your key fob. This includes replacing batteries and reprogramming them. They have the knowledge and skills to handle more complex tasks, like fixing a damaged key or cutting the replacement key. One of the most common reasons for a car's key button to stop working is that the switch inside has worn out. This is due to overuse and exposure to the elements. The switch is made from an extremely hard plastic with many switches on its surface. Each switch is responsible for activating a specific function that you use the key for. As the switch gets older it becomes more difficult to activate these functions. As a result, you'll need to push down more force on the switch to make it work. This could cause more damage to the switch, thereby reducing its lifespan. The most straightforward solution to this problem is to replace the battery on your car's key fob. Many models of car use lithium-ion button or coin batteries that you can find in supermarkets, pharmacies, and home improvement stores. Once you've replaced the battery, your key fob should work again. If the issue persists, it may be that the contacts on your key fob have worn out. The contacts are made of rubber and covered by an electrically conducting film that wears out. When you use the keypad, they are continuously exposed to dust and moisture. Eventually, they will become worn until they no longer make contact with the circuit board or the sensor beneath the keypad. You can attempt to get the key fob replaced by visiting a vehicle dealership, but it can be costly and could take an extended time. The other option is to call an auto locksmith in your area who can repair your key fob and save you money.