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Key Fob Replacement and Repair Key fobs on modern automobiles do a lot of work and are subject to a lot of abuse. In many cases an easy repair or replacement is all it takes to restore them to good working in good condition. Most fobs utilize flat watch-style batteries that can be found in hardware stores and auto parts stores. But before you call a professional, try a few DIY solutions! Dead Key Fob Battery The key fob battery powers the remote feature in your car. It also, with push-to-start vehicles, allows it to start your engine. It is therefore essential to maintain a working and healthy battery. A dead key fob can be a major problem when you're traveling. A simple, affordable replacement can fix the issue quickly. The loss of range and signal strength are the most common signs that a keyfob battery is dying. You might also be noticing that the buttons on your fob don't function or require any effort to turn on. A new key fob is available in the auto part section of a big retailer or on the internet. They are typically CR2032 or CR2025 batteries and are available in packs of two or more. Check out the owner's manual before you purchase the correct battery. Certain vehicles require a particular size or type of battery that isn't always readily available at big-box stores. Make sure to verify before you buy. Typically the battery is placed in the back of your key fob. It is removed by tearing the case open using an abrasive screwdriver with a flat blade. The battery will look similar to an ordinary coin and will be labeled according to its size. Make sure to note the way the plus and minus symbols are placed to ensure that the new battery is positioned correctly. After the replacement battery is inserted, gently snap both pieces of the fob together. Then test the buttons to make sure they function. It's worth noting that, if your key fob continues to stop functioning even after a battery replacement, it may be deprogrammed. In this instance it is likely that a locksmith will be required to assist you. This will cost more than replacing the key fob's battery. Whether your fob battery is failing or you're experiencing other issues with your fob's key an experienced mechanic such as one from YourMechanic can inspect and repair it to get you back on the road. Schedule an appointment to see all the services we offer in your local area. Weak Signals If you notice that your key fob isn't responding as you would expect to the buttons on the remote, it could be a sign of a problem with the signaling. Radio signals are used to communicate between your car and the key fob. Inconsistent or weak radio signals can cause poor performance and range. Examining the battery level of your fob is a good idea, because it could significantly affect signal sensitivity. Resetting the settings on the fob could also aid in restoring a regular response. The procedure will differ from vehicle to vehicle. The owner's manual or a call to your manufacturer's support line is your best guide. Other factors can contribute to weak fob signals, including interference from other devices operating at the same frequency as your key fob. Power lines and other key fobs wireless communication devices, and even cellular networks can interfere with the RF (radio frequency) signals that your key fob utilizes to connect to the receiver in your vehicle. Additionally, physical damage to your key fob can hinder the transmission of RF signals, which could result in a decrease in performance and range. A blown fuse, a damaged or cracked buttons or bent fob case could interfere with the transmission of signals, causing the remote to not respond. There are some simple steps you can try to and solve the issue of weak fob signals such as resetting the fob's settings, or replacing the battery. If your fob has become old and worn out, it might be the right time to replace it. Also, don't forget if you have a spare key fob that comes with your vehicle, this can be used as a replacement for the primary remote if it begins to fail. It's worth trying this solution to see if it can solve the issue before you invest in a new one. In this instance it may be an appropriate time to consult an expert auto-locksmith. They will be able to identify the issue and recommend the best method of action. Physical Damage It's not uncommon for key fobs to encounter problems from time to time. Most of the time, these issues aren't complex or difficult to fix and can be solved with just a few steps. It's a good idea also to keep spare batteries or another fob in case your key ever stops working. A dead battery is the most frequent cause of a car keyfob not working. These little devices depend on tiny lithium-ion coin or button batteries to function. They can be replaced easily and can be found at most pharmacies, food stores and shops which sell electronic items. You can open your fob's casing using an screwdriver that has a flat-head and gently remove the existing battery. Replace the battery, ensuring that it's not damaged or loosened. Most fobs require batteries that are CR2032. However, yours may require a different kind. If your device loses pairing, it may also stop responding to buttons. This can happen due to a variety of factors, including changing the batteries, however it is usually easy to get an auto Locksmith or your local dealer to resolve. You can try this trick to solve your fob issue in the event that none of the above methods work: Disconnect the battery from both the car and the fob for around ten minutes, and then reconnect them in a reverse order. This could trigger a restart within the system, and in some cases this will fix the issue without having to do any of the other steps. When you're playing around with the fob, be sure to keep it out of water and other possible damage sources. Fobs can be quite durable, but it's important to take care with it when you want it to last as long as you can. If none of the troubleshooting procedures above are helpful you, it may be necessary to replace your key fob. If yours has been dropped or tripped on, or subjected to other environmental hazards, it may be beyond repair and in need of a replacement. If that's the case, be sure to shop around to find a bargain before making your final choice. Lost Fob Even with the best of care, car key fobs will occasionally stop working. If yours is lost, it could be a huge expense to replace it—especially if you don't have a spare. “You could end up paying $50 or more to purchase an equivalent replacement from the dealer and then have it programmed, plus an additional mechanical backup which will cost at least another $100,” says Mel Yu an automotive analyst with Consumer Reports. One of the most frequent reasons for a key fob's to not function is a simple issue, such as an insufficient battery. If you are aware of how to change the battery, or if your owner's guide has instructions, you can attempt it yourself. If this doesn't work, you'll have to call an expert. A locksmith can be in a position to assist you in finding your lost fob or get it replaced. They will also likely have an idea of the reason why your fob was not working in the first instance. And if your car is an older model with no smart technology built-in it is possible to 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 in your wallet or on your phone. If you're looking to change the programming of the key fob of your car locksmith is able to do it more easily. If your key fob is an old smart key, it'll need to be deprogrammed by a locksmith or a car dealer. This can cost more than simply replacing it. mobile car key repair are protected by rolling-code encryption that prevents thieves from getting access to your car. This means that the locksmith has to be equipped with a specific software program that is available only to the car manufacturer, which increases the cost. In the majority of cases, the entire process will be charged one time. This includes all costs to reprogramme a new keyfob. This can range from $20 in certain stores to more than $200 at car dealerships, based on the car.