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Car Key Button Repair Car key buttons take a lot of abuse particularly when they are used regularly. Over time, they can become faulty. There are a few simple fixes that can get your keys working again. These methods do not come completely safe, however. Making changes to batteries or tampering with your key fob's security can be risky. If you're not confident doing these yourself, it's recommended to contact an auto locksmith professional. Change the Battery It could be time to replace the battery in the case that your key fob isn't working as it should. You can usually buy replacement batteries at any national chain drug store or the parts department of your automobile dealership. Some manufacturers offer a spare battery with the car when you purchase it. You will first need to find out what kind of battery is used in your key fob. This information is typically available on the manufacturer's website or by examining the key fob. The most commonly used type of battery in keyfobs is the button cell that is similar to those found in remotes and watches. These batteries are available at Walgreens, Energizer and other stores for less than $5 per pack of two. You can take the old battery off your key fob once you know what kind of battery it uses. Most key fobs are designed with a notch or seam that connects them which you can either open with your fingers, or by using a flat tool like a screwdriver. When the fob is opened, the battery will be able to pop out and you can insert the new one in the same orientation as the previous one. Many key fobs are powered by CR2032 batteries. These batteries can be found at stores that 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 correctly. Pressing the lock and unlock buttons on the key fob while it is pointed at your vehicle will help you determine whether or not everything is working as it should be. If your vehicle is not responding to the key fob, it might be necessary to reprogram your key fob and re-establish an electronic connection between the two. Fortunately, this is an easy procedure and requires the use of a phone or other device to do so. Reprogram the Key Fob If you're having issues with your key fob, and you think it needs a new one It may not be required to replace it. Instead the old battery might need to be reprogrammed. This procedure is different for every car so the best way to find out is to consult the owner's manual (usually available in PDF form on the site of the automaker) or search YouTube for videos explaining how to accomplish this. In modern vehicles, a special procedure is required to put the vehicle in 'programming mode'. This typically involves pressing the power button several times on the driver's door or ignition while simultaneously pressing the button on a fob within the time frame specified. This is how the fob sends its digital identification code to the vehicle, and it stores it in its memory. Once the fob is programmed, it will function like normal keys. It is important to remember that changing the programming of a key fob will erase any other key fobs which have been programmed previously. Therefore, if you wish to keep other fobs, they need to be carefully and swiftly reprogrammed following the initial one. Sometimes you can find replacement batteries for key fobs for cars at hardware stores, major retailers, or even on the internet. You must be aware of your car's model and make before you purchase a key fob since it may be difficult to locate the correct battery. A CR editor found a battery that was compatible with the key fob she used however, it was for a different model of car. This meant that while she could start the car and unlock the doors, she wasn't capable of lowering the windows. Fortunately, the dealer can help in this situation, as most of them have the tools needed to reprogram a fob for a specific car. Dealers are required to perform this service on certain European cars such as Audi and BMW because they come with specialized security features which can only be reset at the factory. Other dealers we spoke with like those from Toyota and Lexus were willing to attempt reprogramming the fob in a replacement as long as you knew the exact make and model of the vehicle you are driving. Replace key repair car G28 If you've tried changing the battery and reprogramming the key fob but cannot start your car, it may be time to replace the button on your key. Your car key button receives many uses and jostling over the years and may become stuck or broken. Each press of the button on your key fob releases a distinct code that is recognized by the car's receiver. If you try to operate your vehicle from far away, it may not recognize you. It may lock the doors or shut off the engine. You can buy replacement buttons online or in many local hardware stores. They are easy to install and open and only require a little clear plastic tape to cover the old button. 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 are experts in the repair of electronic keys and locks. They have the tools and knowledge to identify and fix issues with your key fob. This includes replacing batteries and changing their programming. They also have the expertise and expertise to tackle more complicated tasks, such as repairing a broken button or even cutting a new replacement key. The switch inside the car key button is usually worn out. This is due to overuse and exposure to elements. The switch is made from a hard plastic and has many switches on its surface. Each switch is responsible for activating the specific function that you use the key for. As the switch age, it becomes more difficult to turn on these functions. You will have to apply more pressure to the switch to make it work. This could cause further damage to the switch, thereby reducing its life span. 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 at pharmacies, supermarkets, and home improvement stores. Your key fob should work once you have replaced the battery. If the problem persists it may be that your key fob's contacts have worn out. The contacts are made of rubber and are covered with an electrical conducting film that can wear out. They are exposed to elements when you use the keypad and are constantly exposed to dirt and moisture. In time, they'll become worn to the point where they're no longer in contact with the circuit board or sensor underneath the keypad. The dealer can replace the key fob, but it's costly and takes a lot of time. You can also contact an expert locksmith in your area who can repair your key fob for less.