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Car Key Button Repair The buttons on keys for cars are exposed to a lot, especially if they are frequently used. As time passes, they may become damaged. There are a few easy fixes that can get your keys back to working. These methods are not without risk however. Making changes to batteries or tampering with your key fob's security can be risky. If you're not confident doing these things yourself, it's recommended that you contact an expert auto locksmith. Change the Battery If you're noticing that your key fob no longer working as it should, it could be time to replace the battery. You can buy replacement batteries at any national chain drugstore or in the parts department of your local car dealership. Some manufacturers will even include an extra key fob battery in the packaging when you purchase your car from them. The first thing you'll need to determine what battery your key fob uses. This information is usually available on the site of the manufacturer or by looking at the key fob. Generally, the most common battery used in the key fob is a button cell type, similar to those used in remote controls and watches. These batteries are available at Walgreens, Energizer and other stores for less than $5 per box of two. Once you are aware of the type of battery your key fob is using, you can open it up and remove the old battery. You can open most key fobs by using your fingers or a flat tool, like a screwdriver at the seam or notch where they connect. Once the fob is opened, the battery should pop right out and you can insert the new one in the same direction that the old one. A lot of key fobs are powered by CR2032 batteries. These batteries can be found at retailers that sell AAA or AA batteries. Once the new battery is in place, you can snap the two parts of the key fob back together and test it to ensure that all buttons function properly. Pressing the lock and unlock buttons on the key fob while pointing it towards your vehicle will help you determine if everything is working as it should be. If your vehicle does not respond to the keyfob, you may need to reprogram the fob to establish wireless connectivity. Fortunately, this is quite simple and only requires the use of your smartphone or another device to accomplish this. Reprogram your key fob If you're experiencing issues with your key fob and believe that it's time to get a new one, it might not be required to replace it. Instead the old battery might need to be reprogrammed. This process is different for every car. To find out how to go about it you must consult the owner's manual. It's usually available in PDF format on the automaker's website. You can also search YouTube for videos. In modern vehicles, a specific procedure is required to put the vehicle into '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 a time-specific period. This is how the fob communicates its digital identification code to the vehicle, which stores it in memory. Once the fob is programmed, it will function like an ordinary key. It is important to remember that the process of reprogramming a key fob can erase any other key fobs that had been programmed previously. If you wish to keep the other fobs following the first, they must be reprogrammed quickly and carefully. There are a few replacement batteries for your car key fob at hardware stores, big-box retailers or on the internet. You must know the model and make prior to deciding to purchase a fob as it can be difficult to locate the right battery. A CR editor stumbled across an battery for her key fob, however, it was from a different vehicle. This meant she was able to start her car and unlock the door, but couldn't lower the windows. Fortunately, dealers can assist in this case and most dealers have the necessary equipment to reprogram a fob to a specific car. Dealers are required to perform this procedure on certain European vehicles like Audi and BMW because they have specialized security features which can only be reset at the factory. Some dealers, like those at Toyota and Lexus were willing to reprogram the key fob in a replacement in the event that you could identify the exact model and make of the car you own. Replace the Button If you have tried changing the battery and reprogramming the key fob, but you still can't start your car it could be time to replace the button on the key. The key on your car receives many uses and jerking over time and can sometimes become stuck or broken. Every time you press the button on your key fob a unique code is transmitted in a sequence that the receiver in the vehicle can recognize. If you attempt to operate your car from a distance and not using the correct code can cause it to not be able to recognize you and lock the doors or turn off the engine. You can purchase replacement buttons online or at many local hardware stores. It is simple to install them and they are also very simple to open. Contact an Auto Locksmith It may be time to consult the experts If you're experiencing issues with your car's key button. Auto locksmiths specialize in the repair of electronic car keys and their associated locks. They 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 expertise and skills to handle more complicated tasks, such as repairing a broken key or cutting the replacement key. One of the main reasons for a car's key button to stop working is because the switch inside has worn out. This is caused by overuse and exposure to the elements. repair car key is typically constructed of a tough plastic material and has many different switches that are located on the surface. Each of these switches is responsible for activating the specific function that you use the key to activate. As the switch ages it becomes harder to turn on these functions. In the end, you'll have to press down more force on the switch to make it work. This could result in more damage to the switch, further reducing its lifespan. The most effective solution to this issue is to replace the battery on your car's key fob. It is easy to find lithium-ion button or coin cell batteries at supermarkets, pharmacies and home improvement stores. After replacing the battery your key fob should work again. If the problem persists it could be because the contacts inside your key fob are worn out. The contacts are rubber-like and coated with an electricity conducting film, which could wear down over time. They are exposed to the elements as you use the key which means they are constantly exposed to dirt and moisture. They will eventually wear to the point where they are unable to contact with the circuit board, or the sensor underneath the keypad. The dealership can replace your key fob, but it could be costly and take a long time. Another option is to call an auto locksmith in your area who will be able to fix your key fob and help you save money.