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Key Fob Replacement and Repair The key fobs found in modern vehicles are very efficient and are subject to lots of abuse. In many cases an easy replacement or repair is all it takes to bring them back into working good working order. Most fobs are powered by flat watch-style batteries, which can be found in auto parts and hardware stores. Before you call in a professional, do some DIY fixes. Dead Key Fob Batteries The battery of the key fob powers your remote in your car and, in push-to-start vehicles it will start your engine. It is therefore important to maintain a working and healthy battery. When you're out and about and your key fob is not working, it can be a huge problem. A simple, inexpensive replacement will fix the problem quickly. The loss of range and signal strength are the most commonly observed indicators that a battery in a keyfob is dying. You may also notice the buttons on your key fob aren't working or require extra effort. It is common to find an updated key fob battery in the auto parts section of a big box retailer or online. The majority of these batteries are CR2032 and CR2025 and are available in packs of 2 or more. However it's best to read the owner's manual before shopping for the correct battery for your fob. Some cars require a specific size or type of battery that isn't always readily available at big-box stores. Be sure to research before you buy. Typically the battery is situated on the back of your key fob. key fob repair service is removed by tearing open the case with the flat-blade screwdriver. The battery will appear like tiny coins and will be labeled according to its size. Be sure to note down the orientation of the plus and minus signs to ensure that you put the new battery in the correct place. 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. It's important to note that if your key fob continues to stop functioning, even after a battery replacement, it may be deprogrammed. In this situation you will require a locksmith required to assist you. This will cost more than just replacing the battery of your key fob. YourMechanic's experienced mechanics can repair your key fob if it's damaged or the battery has failed. Set up an appointment to review all of the services we provide 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. Your car and key fob depend on radio signals to communicate, therefore weak or inconsistent signals could result in poor performance and range. One of the first things you should check is whether or not your fob's battery is insufficient because this could significantly affect the sensitivity of your signal. It is also recommended to reset the settings of your fob, which can help to 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 will likely be your best resource here. Other factors can cause weak fob signals, for example, interference from other devices operating on the same frequency as your key fob. Power lines, 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. Additionally physical damage to your key fob may also interfere with the transmission of RF signals, which can result in poor performance and range. A blown fuses, a broken or cracked button or a bent case on the fob can affect signal transmission and cause the remote not to respond. There are a few easy steps you can try to and solve the issue of weak fob signals, such as resetting the fob's settings or changing the battery. If, however, your fob is old and worn out, it's probably time to replace it completely. Don't forget to remember that if you have a spare key fob that is included with your vehicle, it can be used as a replacement for the primary remote in the event that it begins to fail. Try this method first to determine if you can resolve the issue before buying an entirely new remote. If not, it could be the right time to contact an expert auto locksmith. They'll be able to determine the cause and recommend the best method of action. Physical Damage It's not common for key fobs to have issues from time-to-time. Fortunately, most of these issues aren't complicated or a major issue and can be fixed with a few easy steps. It's important to keep spare batteries or another fob available in case one of your keys ever fails to work. A dead battery is the main cause of a car keyfob not working. These little devices depend on tiny lithium-ion button or coin batteries to function. These batteries are easily replaceable and can be purchased in most pharmacies and stores. You can open your fob's casing using a flat head screwdriver and gently pry out the battery. Replace the battery, ensuring that it's not damaged, loose or damaged. Most fobs require batteries that are CR2032. However, yours may require a different type. Your fob might also stop responding to the buttons if it loses its connection to the vehicle. This could be due to a number of factors, including changing the batteries, however it is usually easy to get an auto Locksmith or your local dealership to resolve. Try this trick to fix your fob in the event that none of the above methods work: Disconnect the battery from both the fob and the car for around ten minutes, and then reconnect them in the reverse order. This could trigger a reboot within the system and, in some instances this will fix the issue without requiring any of the other steps. Keep the fob out of water or other sources of damage while you are trying out new techniques. Fobs can be quite sturdy, but you need to take care with it if you want it to last as long as you can. If all of the suggestions above aren't working, it could be time to consider replacing your key fob. If it's been dropped or tripped on, or subjected to other environmental hazards, it could be damaged beyond repair and requires an upgrade. Find the most affordable price. Lost Fob Even with the best of care, car key fobs can fail at times. It can be expensive to replace yours in the event that you lose it and especially in the event that you don't have a spare. “You could end up paying $50 – $100 for a new one and getting it programmed by the dealer, and mechanical backups that could cost another $100,” says Mel Yu an automotive analyst at Consumer Reports. One of the most frequent reasons for a key fob's device to stop working is a basic problem, such as an insufficient battery. You can try changing the battery on your own If you are familiar with the procedure or get instructions from the owner's manual. If this doesn't work, you'll have to call an expert. A locksmith can help you to find or replace your lost key fob. They will also likely have an idea of why your fob was not functioning in the first place. If your car is older and doesn't come with smart technology however, you can save money by recording the key number plate from your mechanical backup key. It's usually hidden behind a keychain with an ornamental design. This will make it much easier for a locksmith to reprogram a new key fob to your car should you need to do so. 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. The reason is that modern key fobs use rolling-code encryption to prevent thieves from gaining access to the car. That means that the locksmith needs to have an exclusive programing tool that only the vehicle manufacturer has, which increases the overall cost. In the majority of instances, the entire service will be billed at one time. This includes any charges to reprogramme a new keyfob. Depending on the vehicle the cost can range from $20 at some stores to $200 or more at a dealership for cars.