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Key Fob Replacement and Repair Key fobs on modern automobiles do a lot of work and are subject to an awful amount of abuse. In many cases just a simple replacement or repair is all that's required to restore them to working order. Most fobs are powered by flat watch-style batteries, which is readily available in auto parts and hardware stores. But before you call a professional, try a few DIY solutions! Dead Key Fob Battery The battery of the key fob powers the remote you have in your car and, in push-to-start vehicles it will start your engine. It is therefore essential to keep a functioning and healthy battery. A dead key fob can be an issue for anyone in the middle of nowhere. A simple, affordable replacement can fix the issue quickly. The loss of range and signal strength are among the most commonly observed indications that a battery on a keyfob is failing. You might also notice that the buttons on your key fob aren't working or require additional effort. It is common to find a new key fob battery in the auto parts section of a big box retailer or online. Typically, these batteries are CR2032 and CR2025 and are available in packs of 2 or more. Make sure to consult your owner's manual prior to you purchase the correct battery. Certain vehicles require a certain size or type of battery that's not always readily available at big-box retailers So, make sure you know the specifications prior to you buy. The battery is usually located in the back of the key fob. It can be removed using a flat-bladed screwdriver by removing the case. It is usually shaped like an ordinary coin and will be labeled with the battery size. Be sure to note which way the plus and minus symbols are positioned to ensure that the new battery is placed correctly. After the replacement battery is inserted, gently snap both pieces of the fob in place and test all of the buttons to ensure that they work. It's worth noting that, if your key fob continues to cease functioning even after a battery replacement, it may have been deprogrammed. In this scenario you'll have to contact locksmiths for assistance which will cost a bit more than replacing the key fob battery. Whether your fob battery is failing or you're experiencing other issues with your key fob an experienced mechanic such as one from YourMechanic can inspect and repair it to get you back on the road. Set up an appointment to review the range of services we offer in your region. Weak Signals If your key fob doesn't respond to the buttons of the remote it could be a sign that the signaling is not working correctly. Your car and key fob rely on radio signals to communicate, therefore weak or inconsistant signals can result in poor range and performance. One of the first things you should check is whether or not the battery of your fob is depleted since this can greatly affect the sensitivity of your signal. Resetting the settings of the fob can also help restore a more consistent response. The process will vary from vehicle to vehicle. Your owner's guide or a call to your manufacturer's support number is your best guide. Other factors, such as interference from other devices that operate at the same frequency can also cause 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. Physical damage to your keyfob can also affect the transmission of an RF signal, resulting in low performance and a limited range. A damaged or blown fuse, a broken or cracked buttons or bent fob case could interfere with the transmission of signals, causing the remote to not respond. You can try to solve the issue by resetting the settings on your fob or by replacing the battery. However, if your fob is worn out, it's probably the time to replace it all over again. Don't forget to remember that if you have an extra key fob which is included with your vehicle, this can be used as a replacement for the primary remote in the event that it begins to fail. Try this method first to see if it can solve the issue prior to buying a new remote. If not, this might be the right time to contact a professional auto locksmith. They can identify the issue and suggest the best way to proceed. Physical Damage Key fobs can be troublesome occasionally. Fortunately, most of these problems are not difficult or complicated and can be solved with some simple steps. It's also a good idea to keep spare batteries or another fob in case your key ever stops working. The most common reason for a car key fob not working is a dead battery. These tiny devices rely on tiny lithium-ion button or coin batteries to function. They are easy to replace and can be found at most pharmacies, food stores and shops that sell electronics. Open the fob's case with an screwdriver that is flat and gently remove your existing battery. Replace the battery, ensuring that it's not damaged or loosened. Most fobs require batteries that are CR2032. However, yours might require a different kind. Your fob might also stop responding to buttons when it loses its connection with your car. This could be due to a variety of reasons, including changing the batteries, however it is generally simple to get an auto Locksmith or your local dealership to resolve. If none of the solutions above work, try this method: disconnect the battery from the car and fob for a short period of time, then reconnect the two in a reverse order. This could trigger a restart within the system and in some cases this will fix the issue without requiring any of the other steps. When you're playing around with the fob, ensure to keep it away from water and other sources of damage. A fob can be pretty robust, but it's crucial to treat it with care if you want it to last as long as it can. If link web site of the troubleshooting procedures above work you, it may be necessary to replace your key fob. If it's been dropped or trampled upon, or exposed to harsh environmental conditions, it may not be able to be repaired and will require a replacement. If this is the case, you should be sure to shop around to find a bargain before making a final decision. Lost Fob Even with the best care it's a fact of the road that car key fobs can occasionally cease to function. If you lose yours, it can be extremely expensive to replace it, particularly when you don't have a spare. “You may end up paying $50 – $100 for a new one and having it programmed by a dealer, plus a mechanical backup that will cost another $100,” says Mel Yu an automotive analyst at Consumer Reports. A weak battery is one of the most common causes for a keyfob's cease to function. You can try changing the battery on your own if you know how or refer to the owner's manual. But if that doesn't fix the problem, it's time to contact an expert. A locksmith can help replace or find the lost key fob. They'll also probably have an idea of the reason why your fob was not working in the first instance. And if your vehicle is a model older than the one you own and has no built-in smart technology, you can save some 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 recording it in a safe place—such as in your wallet or on your phone. If you need to reprogram your car's key fob the locksmith can do it much more quickly. If your key fob is an old smart key, it will need to be deprogrammed by a locksmith or dealer. This can cost more than just replacing it. Modern key fobs are secured by encryption using rolling-codes, which prevents thieves from gaining access to your car. This means that the locksmith must be equipped with a specific programming tool that is available only to car manufacturers, which increases the cost. In the majority of instances, the entire service will be charged at the same time. This includes any charges for reprogramming a keyfob. This could range from around $20 at some shops to over $200 at car dealerships, based on the car.