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Key Fob Replacement and Repair Modern car key fobs are used a great deal and are often abused. In many cases an easy repair or replacement is all it takes to restore them to good working order. The majority of fobs are powered by a flat watch-style battery, which can be found in hardware and auto parts stores. Before calling in an expert, try some DIY fixes. Dead Key Fob Batteries The battery in the key fob's remote powers your remote in your car, and in push-to-start cars, it can start your engine. As a result, it is crucial to maintain an active, healthy battery. A dead key fob can be a major problem when you're in the middle of nowhere. A simple, inexpensive replacement will solve the issue quickly. The loss of range and signal strength are among the most common indicators that a battery in a keyfob is failing. You might also notice that the buttons on your key fob are not working or require more effort. You can often find the latest key fob batteries in the auto parts section of a large box store or on the internet. They are typically CR2032 and CR2025 and are available in packs of 2 or more. Check out the owner's manual before you purchase the correct battery. Some cars require a specific size or type of battery, which isn't always readily available at big-box stores. Make sure to verify before you buy. Typically, the battery is located in the back of your key fob. It is removed by tearing the case open with a flat-blade screwdriver. It is usually shaped like a small coin and be labelled with the battery's size. Make sure to note the orientation of the plus and minus signs to ensure that you put the new battery in the correct place. After the replacement battery is inserted, gently snap both pieces of the fob together. Then test the buttons to make sure they function. If your key fob still doesn't work after replacing the battery, it could be deprogrammed. In this instance you will require a locksmith required to assist you. This will cost more than just replacing the key fob's battery. The skilled mechanics at YourMechanic are able to repair your key fob in the event that it is damaged or if the battery is dead. Set up an appointment to review the range of services we offer in your local area. Weak Signals If you find that your key fob isn't responding as you would expect to the buttons on the remote, this could be a sign of a problem with signaling. Your car and key fob are dependent on radio signals to communicate, and weak or inconsistent signals can cause poor performance and range. Examining the battery level of your fob is a good idea, since it can affect signal sensitivity. It's also advisable to reset the settings on your fob that can help bring back the same response from the car. The procedure will differ from vehicle to vehicle. Your owner's guide or a call to your manufacturer's support line is the best resource. car key repair service , like interference from other devices operating on the same frequency can also affect weak signals. Other key fobs as well as wireless communication devices can interfere with the radio frequency (radio-frequency) signals that your key fob sends to connect to the receiver of your vehicle. Damage to your keyfob's physical structure can interfere with the transmission of radio signal, leading to poor performance and range. A blown fuse, broken or cracked button or a bent case can affect the transmission of signals and cause the remote to fail to respond. There are a few easy steps you can take to try and fix the problem of weak signals from your fob, for example, resetting the fob's settings or changing the battery. If, however, your fob is worn out, it's time to replace it altogether. Don't forget to utilize the spare remote that was included with your vehicle if your primary remote begins to fail. It's a good idea to try this method to determine if it resolves the issue before you invest in an entirely new one. In this instance it could be the right time to call an auto-locksmith professional. They can determine the cause and suggest the most effective course of action. Physical Damage It's not uncommon for key fobs to experience issues from time-to-time. Most of these issues aren't complex or severe and can be fixed with just a few steps. It's a good idea to keep spare batteries or a different fob on hand in case your key fails to function. The most common reason for car keys not working is a dead battery. These tiny devices are powered by lithium-ion buttons or coin cell batteries. These are easily replaced and can be found in most pharmacies, grocery stores and places that sell electronic products. The fob's case can be opened using a flat-headed screwdriver and gently pull out your existing battery. Replace the battery, ensuring it's not damaged, loose or damaged. The majority of fobs use CR2032 batteries, however yours might require an alternative type. Your fob could not be responding to buttons after losing its pairing with the vehicle. This can be caused by various reasons like changing the batteries. However, an auto Locksmith or a local dealership will usually be able to fix it. If none of the methods above work, you can try this trick: unplug the batteries from the car and the fob for a short period of time and then connect them in reverse order. This could trigger a reboot within the system and in some cases it will solve the issue without requiring any of the other steps. Keep the fob away from water or other sources of damage while you are playing around. The fob is a durable device but you need to take care of it to ensure it lasts for as long as it is possible to. If none of the troubleshooting techniques above work, you may need to replace your key fob. If yours has been dropped or tripped over, or exposed to other extreme environmental conditions, it could be damaged beyond repair and requires a replacement. Look around for the most affordable price. Lost Fob Even with the best care it's a fact in life that car key fobs will occasionally stop working. If you lose yours it can be extremely expensive to replace it—especially in the event that you don't have spare. “You might end up paying $50 or more to get a new replacement from the dealer and then have it programmed, as well as a new mechanical backup which will cost at most another $100,” says Mel Yu an automotive analyst with Consumer Reports. A weak battery is among the most common reasons for a keyfob to cease to function. Try changing the battery yourself if you know how or consult your owner's manual. If that doesn't work, you'll need to contact an expert. A locksmith can help you replace or find your lost key fob. They'll also probably have an idea of why your fob was not functioning in the first place. If your car is an older model that has no built-in smart technology it is possible to save money by finding the key number plate on your existing mechanical backup key (it's usually hidden behind a keychain ornament with a decorative design) 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 much more quickly. If your key fob is an older smart key, it'll need to be deprogrammed by a locksmith or dealer. This can cost more than just replacing it. car keys repair are protected by rolling-code encryption that prevents thieves from getting access to the car. This means that locksmiths must be equipped with a specific software program which is only available to car manufacturers, which can increase the cost. In most cases, the whole service will be charged at the same time. This includes any costs for reprogramming a new keyfob. Depending on the vehicle it could cost anywhere from a mere $20 at some shops to $200 or more at a car dealer.