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Key Fob Replacement and Repair Modern car key fobs are utilized a great deal and are often misused. Sometimes just a simple replacement or repair is all it takes to restore them to good working in good condition. Most fobs use flat watch-style batteries, which are easy to find in hardware stores and auto parts stores. But before you call an expert, you can try a few DIY solutions! Dead Key Fob Batteries The battery of the key fob powers the remote you have in your car and in push-to start cars it will start your engine. It is therefore essential to maintain a functional, healthy battery. A dead key fob can be an issue for anyone on-the-go. A simple, low-cost replacement will fix the problem quickly. The loss of range and signal strength are among the most commonly observed signs that a keyfob battery is failing. You may also find that the buttons on your fob do not work or require extra effort to turn on. A new key fob is available in the auto parts section of a large retailer or online. They are typically CR2032 or CR2025 batteries and are available in packs of two or more. Make sure to consult your owner's manual prior to you decide on the best battery. Certain vehicles require a certain size or kind of battery that's not always readily available at big-box stores Be sure to be aware of the correct specifications before you buy. The battery is usually located on the back of the key fob. It can be removed using an abrasive screwdriver with a flat blade by removing the case. The battery will appear like a small coin and will be identified according to its size. Be sure to note down the orientation of the plus and minus symbols so that you can insert the battery correctly. After the battery has been replaced, gently snap the two pieces of the fob back together. Then test the buttons. If your key fob doesn't work after replacing the battery, it could have been deprogrammed. In this case it is likely that a locksmith will be required to assist. This is more expensive than replacing the battery in the key fob. If the battery in your fob is failing or you're experiencing other issues with your key fob, an experienced mechanic like one from YourMechanic can inspect and repair it to get you back on the road. Make an appointment to look over the range of services we offer in your area. Weak Signals If you notice that your key fob isn't responding to buttons on the remote, this can be an indication of a problem with signaling. Radio signals are used to communicate between your car and the key fob. Weak or inconsistent radio signals can lead to poor performance and range. The battery level of your fob is a good idea as it can have a significant impact on the sensitivity of the signal. Resetting the settings on the fob could aid in restoring a more constant response. The procedure will differ from vehicle to vehicle. The owner's manual or a call to the manufacturer's support line is the best source of information. Other factors, such as interference from other devices that operate on the same frequency, can also contribute to weak signals. Other key fobs and wireless communication devices could interfere with the radio frequency (radio-frequency) signals your key fob sends to connect to the vehicle's receiver. Damage to your keyfob's physical structure can also interfere with the transmission of radio signal, leading to lower performance and less range. A blown fuse, a damaged or cracked button or bent fob case can affect the transmission of signals and cause the remote to fail to respond. You can fix the problem by resetting the fob's settings or by replacing the battery. However, if your fob is old and worn out, it's the time to replace it all over again. Don't forget to remember that if you have a spare key fob that is included with your vehicle, it can be used instead of the primary remote in the event that it begins to fail. Try this method first to determine if you can solve the issue prior to purchasing an entirely new remote. In this situation, it might be an appropriate time to consult an expert auto-locksmith. They can identify the issue and recommend the best course of actions. Physical Damage It's not unusual for key fobs to experience problems from time to time. Fortunately, most of these issues aren't complicated or a major issue and can be solved with a few easy steps. It's recommended to have spare batteries or even an additional fob in case one of your keys stops working. A dead battery is the most frequent reason for a car keyfob not working. These tiny devices are powered by lithium-ion buttons or coin cell batteries. They are easily replaced and are available in most pharmacies and stores. You can open your fob's casing using a flat head screwdriver and gently pry out the existing battery. Check to see if it's damaged or loose and then insert an alternative battery. Most fobs use CR2032 batteries. However, yours may require a different type. Your fob might also stop responding to the buttons when it loses its connection to the vehicle. This could be due to a number of factors, such as changing the batteries, but it is typically a simple issue to get an auto Locksmith or your local dealership to fix. Try this trick to solve your fob issue in the event that none of the above methods work: remove the battery from both the car and the fob for about 10 minutes, and then reconnect them in a reverse order. This could trigger a reboot within the system and, in some instances, this alone will fix the issue without requiring any of the other steps. Keep car key fob repair service of water or other sources of harm while you're experimenting. A fob can be pretty robust, but it's crucial to take care with it if you want it to last as long as it can. If all of the above troubleshooting tips aren't working, it could be time to think about replacing your key fob. If yours has been dropped or tripped over, or exposed to other harsh environmental conditions it may be beyond repair and may require an upgrade. Shop around to find the most competitive price. Lost Fob Even with the best of care keys to cars can fail at times. If you lose yours it can be extremely expensive to replace it, particularly if you don't have a spare. “You could end up paying $50 to $100 for a replacement, and getting it programmed by the dealer, and a mechanical backup that will cost another $100,” says Mel Yu an automotive analyst at Consumer Reports. One of the most common reasons for a key fob's device to stop working is a simple issue, such as an insufficient battery. You can try replacing the battery on your own when you know how, or consult your owner's manual. If that doesn't work you'll need to contact an expert. A locksmith is in a position to assist you in finding the lost fob or have it replaced. A locksmith can probably tell you the reason your fob stopped working in the first place. If your car is old and doesn't have smart technology built in however, you can save money by recording the key number plate of your mechanical backup key. It's usually hidden behind a decorative keychain. If you're looking to change the programming of the key fob in your car, the locksmith can perform the task more easily. If your key fob is an old smart key, it'll have to be deprogrammed by a locksmith or car dealer. This can cost more than just replacing it. Modern key fobs are secured by encryption using rolling-codes which stops thieves from getting access to the car. And that means the locksmith needs to have an exclusive programing tool that only the car manufacturer has, which increases the overall cost. In most cases, the whole service will be charged at the same time. This includes any costs for reprogramming a keyfob. Depending on the vehicle, that can run from a mere $20 at some shops to $200 or more at a car dealership.