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Key Fob Replacement and Repair Modern car key fobs are used frequently and are often abused. Sometimes, a simple repair or replacement is all it takes to make them work again. The majority of fobs are made with flat watch-style batteries, which are readily available in hardware stores and auto parts stores. Before you call an expert, you can try a few DIY fixes! Dead Key Fob Battery The battery in the key fob powers the remote feature in your car. It also, with push-to-start vehicles, allows it to start your engine. As a result, it is crucial to maintain a healthy, working battery. A dead key fob can be an issue for anyone in the middle of nowhere. A simple, affordable replacement will fix the problem quickly. The loss of range and signal strength are the most common indications that a battery on a keyfob is dying. You might also notice that the buttons on your key fob aren't working or require more effort. A new key fob is available in the auto part section of a major retailer or online. They are typically CR2032 and CR2025 and are available in packs of 2 or more. However, it's a good idea to check your owner's manual before shopping for the right battery for your vehicle. Certain cars require a specific size or type of battery that's not always readily available at big-box stores, so be sure to be aware of the correct specifications before you buy. Typically the battery is situated on the back of your key fob. It can be removed by prying the case open using an abrasive screwdriver with a flat blade. The battery will appear like an ordinary coin and be labeled according to its size. Be sure to note which way the plus and minus symbols are placed to ensure that the new battery is placed correctly. After the battery has been replaced and the fob is closed, gently snap the two pieces of the fob back together and test the buttons. If your key fob still does not work after replacing the battery, it may be deprogrammed. In this instance, you'll need to contact a locksmith for help which will cost some more than replacing the key fob battery. Whether your fob battery is dying or you're having other issues with your key fob, an experienced mechanic like one from YourMechanic can examine and fix it to get you back on the road. Set up an appointment to review all of the services we provide in your local area. Weak Signals If your key fob doesn't respond to the buttons on the remote, it could be an indication that the signaling system is not working properly. Your car and key fob rely on radio signals to communicate, so weak or inconsistent signals can cause poor range and performance. One of the first things to determine is if your fob's battery is low, as this can significantly affect the sensitivity of your signal. It is also recommended to reset the fob's settings and help restore a more consistent response from the car. The process will vary from vehicle to vehicle. Your owner's guide or a call to your manufacturer's support line is your best guide. Other factors, including interference from other devices operating on the same frequency can also affect weak signals. Power lines and other key fobs wireless communication devices, and even cell networks can disrupt the RF (radio frequency) signals that your key fob utilizes to connect to the receiver inside your vehicle. Finally, physical damage to your key fob could also interfere with the transmission of signals RF, which could result in a decrease in range and performance. A damaged or blown fuse, a broken or cracked button, or a bent fob case could affect the transmission of signals, causing the remote to fail to respond. You can attempt to resolve the issue by resetting your fob's settings, or by replacing the battery. If your fob has become old and worn, it may be time to replace it. Don't forget to use the spare remote that was included with your vehicle if your primary remote starts to fail. Try this method first to see if you can fix the problem before purchasing an entirely new remote. In this case it could be the right an appropriate time to consult an expert auto-locksmith. They will be able to diagnose the problem and suggest the most effective method of action. Physical Damage It's not unusual for key fobs to encounter problems from time to time. Fortunately, most of these problems are not complicated or a major issue and can be resolved by following a few simple steps. It's important to have spare batteries or an additional fob in case one of your keys ever fails to work. The most common reason for the car key fob not working is an inactive battery. These tiny devices are powered by lithium-ion button or coin cell batteries. These are easily replaced and are available at most pharmacies, food stores and shops that sell electronic products. The fob's case can be opened using a screwdriver with a flat head, and gently pry out the battery that you have. Check to see if it's damaged or loose, and then simply pop in the new battery. Most fobs require batteries that are CR2032. However, yours might need a different type. The fob may also stop responding to the buttons if it loses its connection with your vehicle. This can be caused by various reasons including changing the batteries. However how to repair car key lock is possible to fix the issue with an auto Locksmith or local dealership can usually repair the issue. If none of the methods above work, you can try this trick: disconnect the batteries from the car and fob for a few minutes, then reconnect the two in reverse order. This could cause the system to restart and in certain cases, this will fix the issue without additional steps. Keep the fob out of water or other sources of damage while you are playing around. The fob is quite sturdy, but you need to treat it with care if you want it to last as long as possible. If all of the above troubleshooting tips aren't working, it could be time to think about replacing your key fob. If it has been dropped, trampled on or exposed to harsh environmental conditions, it could not be repairable and may require an upgrade. Shop around to find the best deal. Lost Fob Even with the best care it's a fact of life that car key fobs will sometimes stop working. It's expensive to replace yours if you lose it, especially in the event that you don't have a spare. “You may end up spending $50 or more to purchase an equivalent replacement from the dealer and have it programmed, plus an additional mechanical backup which will cost at most another $100,” says Mel Yu who is an automotive analyst at Consumer Reports. One of the most frequent reasons for a key fob's to not function is a simple issue, like a weak battery. If you are familiar with how to change the battery, or if the owner's manual has instructions, you can attempt it yourself. If emergency car key repair doesn't resolve the problem, you need to contact an expert. A locksmith is able to help you find your lost fob, or get it replaced. A locksmith can probably tell you why your fob stopped functioning in the first place. If your car is an older model with no built-in smart technology You can save money by finding the key number plate on your current mechanical backup key (it's typically hidden behind a decorative keychain ornament) and storing it in a secure location, such as your wallet or on your phone. If you're in need of reprogramming your car's key fob the locksmith can do it more easily. If your current key fob is a modern smart key and you want to change it, you'll need to go to a car dealership or locksmith to deprogram it before getting a new one made which is more expensive than simply replacing it. Modern key fobs are protected by encryption using rolling-codes which stops thieves from getting access to the car. And that means locksmiths need an exclusive programing tool that only the vehicle manufacturer has, which increases the overall expense. In the majority of instances, you'll need to pay for the entire service at once, which includes the cost of programming the new key fob. This can range from $20 in certain stores to over $200 at car dealerships, based on the vehicle.