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Car Key Button Repair Car key buttons undergo a lot of abuse particularly if they are used frequently. This can result in them becoming faulty over time. There are a few easy solutions that will get your keys back in working order. However, these methods have the potential for dangers when changing batteries or tampering with the key fob. If you're not comfortable with these methods, it's best to consult a professional auto-locksmith. Change the Battery It's possible to change the battery in your key fob if it no longer works as it should. You can find replacement batteries at any national chain drugstore or in the parts department at your local dealership for cars. Some manufacturers will even include an extra key fob battery inside the packaging when you purchase your car from them. First, you'll need to find out what type of battery is used in your key fob. This information is typically found on the manufacturer's website or by looking at the key fob. The most popular type of battery found in keyfobs is the button cell, which is like the ones found in remotes and watches. These batteries are available at Walgreens, Energizer and other stores for less than $5 for a pack of two. You can take the old battery off your key fob after you know what kind of battery it uses. You can open most key fobs by using your fingers or a flat tool, like a screwdriver, at the notch or seam where they join. Once the fob is opened, the battery should be able to pop out and you can then put in the new one in the same orientation that the old one. The majority of key fobs are powered by CR2032 3V batteries, which are readily accessible at a variety of retailers that sell AAA and AA batteries. You can snap the two halves back together after inserting the new battery and then test the key fob to make sure that all buttons are functioning correctly. You can test if all functions are working correctly by pressing the lock and unlock button on the key fob, while pointing it toward your vehicle. If your vehicle is not responding to the key fob, it could be necessary to reprogram the key fob and establish a wireless connection between the two. This is a fairly simple process that only requires your phone or a different device. Reprogram the Key Fob If your key fob does not function and you believe it needs to be replaced the fact is that it might not require a new battery, but instead the old one has to be changed. This process varies by car so the best way to find out is to refer to the owner's manual (usually available in PDF format on the site of the automaker) or look on YouTube for videos explaining how to accomplish this. Most modern vehicles require a specific procedure to put the vehicle in 'programming mode,' which is usually done by pressing the power button on the driver's side door or ignition a few times while pressing a button on the fob within a specified time. This is how the fob sends its digital identity code to the car, which saves it in the memory. The fob can function as a regular key after it has been programmed. Reprogramming a keyfob erases any previous keyfobs. If you wish to keep the other fobs following the first, then they must be reprogrammed quickly and carefully. Sometimes you can find replacement batteries for car key fobs at hardware stores, major retailers, or even on the internet. However, you must know the make and model of your car prior to purchasing a fob battery because the right type can be tricky to find. A CR editor discovered the battery for her key fob, but it was from another vehicle. This meant that while she could start the car and open the doors, she wasn't in a position to lower the windows. Dealers can be a great resource in this regard, since they have the equipment necessary to reprogram the fob on specific vehicles. Dealers are required to carry out this service on certain European vehicles like Audi and BMW due to their unique security features which can only be reset by the manufacturer. Some dealers, such as those at Toyota and Lexus were willing to reprogram a replacement key fob in the event that you could identify the exact model and brand of your vehicle. Replace the Button If you've tried changing the battery or reprogramming the key fob but can't start your car it may be time to replace the button on the key. The car key button gets lots of use and jolting over time and can sometimes get stuck or even broken. Every time you press the button on your car key fob generates a unique code in a sequence that is recognized by the receiver inside the vehicle. If you attempt to operate your vehicle from far away, it may not recognise you. It might shut the doors or turn off the engine. You can buy replacement buttons online or at many local hardware stores. They are relatively simple to open and install and only require a little clear plastic tape to cover the button. Contact an Auto Locksmith It's time to speak with a professional when you're having issues with your car's key button. Auto locksmiths are experts in the repair of electronic keys and locks. These experts have the tools and knowledge to diagnose and fix various issues with your key fob. This includes replacing batteries and reprogramming them. They have the expertise and expertise to tackle more complicated tasks, such as fixing a damaged key or cutting an alternative key. One of the main reasons for a car key switch to stop working is that the switch inside it has worn out. Excessive use and exposure to elements are the main causes. repair broken car key is made from hard plastic and has several switches on its surface. Each of these switches is responsible for activating the particular function that you use the key to activate. As the switch wears out over time, it becomes more difficult to activate each of these functions. This means that you will need to press down harder on the switch to enable it to function. This could further damage the switch and reduce its lifespan. Replace the battery in your key fob. It is easy to find lithium-ion button and coin cell batteries in supermarkets, pharmacies and home improvement stores. After replacing the battery the key fob will work again. If the issue persists, it could be that the contacts in your key fob have become worn out. The contacts are made of rubber and are covered with an electrically conducting film that can wear out. When you use the key, they are exposed to dust and moisture. Eventually, they will get worn down 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 take a lot of time. You can also contact an emergency locksmith who will fix your key fob for less.