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Key Fob Replacement and Repair The key fobs found in modern automobiles do a lot of work and are subject to an awful amount of abuse. Many times, a simple replacement or repair is all that's required to bring them back into working good working order. Most fobs run on a flat watch-style battery, which is easily found in hardware and auto parts stores. Before you call in a professional, do a few DIY fixes. Dead Key Fob Battery The battery for the key fob power the remote feature in your car. It also, in conjunction with push-to start vehicles, permits it to start your engine. It is therefore important to keep a functioning, healthy battery. A dead key fob is a major problem when you're in the middle of nowhere. A simple, inexpensive replacement can fix the issue quickly. The loss of range and signal strength are among the most common signs that a keyfob battery is dying. It is also possible to find that the buttons on your fob do not work or require extra effort to be activated. A new key fob can be found in the auto parts section of a large retailer or online. Typically, these batteries are CR2032 and CR2025 and are sold in packs of 2 or more. However, it's a good idea to read the owner's manual before shopping for the right battery for your vehicle. Certain vehicles require a particular size or type of battery that isn't always readily available at big-box stores. Be sure to research before you buy. The battery is typically located on the back of the key fob. It can be removed with an abrasive screwdriver with a flat blade by opening the case. The battery will look like an ordinary coin, and it will be labeled based on its size. Be sure to note which direction the plus and minus symbols are placed to ensure that the battery you are replacing is properly placed. Once the battery replacement is placed in the fob, gently snap both pieces of the fob together. Then test each button to make sure they function. It's worth noting that, when your key fob is unable to not function, even after a battery replacement, it might be deprogrammed. In this situation, a locksmith will be required to assist you. This will cost more than replacing the battery in the key fob. 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 check and repair it to get you back on the road. Make sure to look over all of our services available in your area and make an appointment today! Weak car key fob repairs If you find that your key fob isn't responding as you would expect to the buttons on the remote, this could be an indication of a problem with signaling. Radio signals are used to communicate between your car and the key fob. Poor or inconsistent radio signals can lead to poor performance and a limited range. One of the first things to check is whether or not your fob's battery is low, as this can significantly affect the sensitivity of the signal. It's also advisable to reset the fob's settings and help bring back the same response from the car. The procedure varies from vehicle to vehicle, so your owner's manual or a phone call to the helpline of the manufacturer is likely to be the best source of information here. Other factors can cause weak fob signals, for example, interference from other devices operating at the same frequency as your key fob. Other key fobs and wireless communication devices could interfere with the signal RF (radio-frequency) signals that your key fob transmits to the receiver of your vehicle. Furthermore, physical damage to your key fob could also interfere with the transmission of signals RF, which can result in poor range and performance. A blown fuse, a damaged or cracked button, or a bent case of the fob can affect signal transmission and cause the remote not to respond. There are a few easy steps you can take to try and solve the issue of weak fob signals, like resetting the fob's settings or replacing the battery. If, however, your fob is worn out, it's time to replace it completely. Don't forget to use the spare remote that came with your car in the event that your primary remote starts to fail. You should try this solution first to determine if you can solve the issue prior to buying an entirely new remote. If not, it might be the best time to consult a professional auto locksmith. They can identify the problem and recommend the best way to proceed. Physical Damage Key fobs can have problems at times. Most of these issues aren't complex or difficult to fix and can be solved with a few simple steps. It's also a good idea to keep spare batteries or another fob available in case one of your keys ceases to function. The most frequent cause for car keys not working is a dead battery. These tiny devices are powered by lithium-ion button or coin cell batteries. These are easily replaced and can be found at most pharmacies, grocery stores and shops that sell electronic products. Open the fob's case with a flat-headed screwdriver, and gently pry out the battery you have. Replace the battery, ensuring that it's not damaged, loose or damaged. The majority of fobs use CR2032 batteries. However, yours may require an alternative type. If your device loses pairing, it may also stop responding to buttons. This could be due to many factors like changing the batteries. However, an auto Locksmith or local dealership is usually able to repair the issue. You can try this trick to fix your fob when none of the other methods work: remove the battery from both the car and the fob for around ten minutes, and then reconnect them in the reverse order. This could cause the system to restart and in some 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. A fob can be pretty sturdy, but you need to treat it with care if you want it to last as long as possible. If none of the troubleshooting techniques above help you, it may be necessary to replace your key fob. If it has been dropped or trampled upon, or exposed to extreme environmental conditions, it may not be repairable and may require an upgrade. If this is the case, make sure to search for a deal before making your final choice. Lost Fob Even with the best care keys for cars, they can fail at times. If yours is lost, it can be extremely expensive to replace it, particularly in the event that you don't have spare. “You could end up paying $50 or more to get an alternative from a dealer and get it programmed, and a new mechanical backup which could cost you at least another $100,” says Mel Yu an automotive analyst with Consumer Reports. A weak battery is among the most common reasons for a keyfob's stop working. If you know how to change the battery, or if the owner's manual has instructions, try it yourself. If that doesn't solve the problem, you need to contact an expert. A locksmith can help you 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 car is a model older than the one you own and has no smart technology built-in You can save cash by locating the key number plate on your existing mechanical backup key (it's typically hidden behind a decorative keychain) and recording it in a safe place—such as in your wallet or on your phone. This can make it easier for a locksmith to reprogram a new key fob for your car should you need to do it. If your existing key fob is a modern smart key, you'll have to visit a car dealership or locksmith to remove it from the system and have a new one created and this can be more expensive than simply replacing it. That's because modern key fobs employ rolling-code encryption that prevents thieves from gaining access to the car. That means that the locksmith must have an exclusive programing tool that only the vehicle manufacturer is equipped with, which adds to the overall cost. In most cases, you'll need to pay for the entire service at once, which includes any costs to reprogram the new key fob. Depending on the type of vehicle the cost can range from $20 at some stores to $200 or more at a car dealership.