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Key Fob Replacement and Repair Modern car key fobs are utilized frequently and are often abused. Sometimes an easy repair or replacement is all that's required to get them back in good working in good condition. Most fobs run on a flat watch-style battery, which can be found in auto parts and hardware stores. Before calling 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, with push-to start vehicles, permits it to start your engine. Therefore, it is essential to keep a healthy, working battery. A dead key fob is an issue when you're traveling. The good news is that a cheap, simple replacement is able to fix the issue quickly. The most obvious sign that a battery on a key fob is dying is the decrease in signal strength and range. It is also possible to notice that the buttons on your fob don't work or require additional effort to be activated. 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 that are available in packs of two or more. However it's a good idea to consult your owner's manual before shopping for the correct battery for your fob. Certain vehicles require a certain size or type of battery that isn't always available at big-box stores So, make sure you be aware of the correct specifications before you buy. The battery is usually found on the back of the key fob. It can be removed with 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 down the orientation of the plus and minus marks in order to insert the battery correctly. After the battery has been replaced, gently snap the two pieces of the fob back together and test the buttons. If your key fob still doesn't work after replacing the battery, it might be deprogrammed. In this instance, you'll need to contact locksmiths for assistance, which will cost a little more than simply replacing the key fob battery. Whether your fob battery is dying or you're having 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. Set up an appointment to review the range of services we provide in your area. Weak Signals If you notice that your key fob isn't responding as you would expect to the buttons on the remote, this could be a sign of a problem with the signaling. Your car and key fob are dependent 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 your fob's battery is insufficient since this can greatly affect the sensitivity of the signal. It is also recommended to reset the settings of your fob that can help get a more consistent response from the car. The procedure will differ from vehicle to vehicle. repair car key or a call to your manufacturer's support line is the best guide. Other factors can contribute to weak fob signals, such as interference from other devices that operate on the same frequency as your key fob. Other key fobs and wireless communication devices could interfere with the radio frequency (radio-frequency) signals that your key fob transmits to the vehicle's receiver. Finally, physical damage to your key fob can hinder the transmission of signals RF, which can result in poor performance and range. A blown fuse, broken or cracked buttons or a bent case can interfere with the transmission of signals, causing the remote to not respond. You can fix the problem by resetting the settings on your fob or by replacing the battery. If your fob has become old and worn, it may be the right time to replace it. Don't forget to utilize the spare remote that came with your car if your primary remote starts to fail. Try this method first to see if it can solve the issue prior to buying an entirely new remote. In this situation it may be time to call an auto-locksmith professional. They will be able to identify the issue and suggest the best course of actions. Physical Damage It's not unusual for key fobs to encounter issues from time to time. Most of these problems aren't complicated or serious and can be resolved with a few simple steps. It's recommended to keep spare batteries or an additional fob in case one of your keys fails to work. A dead battery is the most frequent cause of a car keyfob not working. These small devices depend on tiny lithium-ion coin or button batteries to function. They can be replaced and can be found at most pharmacies and grocery stores. Open the fob's case with an screwdriver that is flat, and gently pry out your existing battery. Check to see if it's loose or damaged and then insert an alternative battery. Most fobs require batteries with CR2032 capacity. However, yours may require a different kind. The fob may not be responding to buttons when it loses its pairing with the car. This can happen due to a variety of factors, including changing the batteries, but is typically a simple issue to get an auto Locksmith or your local dealer to resolve. You can try this method to solve your fob issue when none of the other methods work: remove the battery from both the car and the fob for about ten minutes, then reconnect them in the reverse order. This may cause the system to restart and in certain cases it can fix the issue without any other steps. While you're experimenting with the fob, ensure to keep it out of water and other potential sources of damage. The fob is a durable device however, you must take care of it to ensure it lasts for as long as you can. If none 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 extreme environmental conditions, it could not be able to be repaired and will require an upgrade. Look around for the most competitive price. Lost Fob Even with the best care keys to cars may fail to function. It's costly to replace yours if you lose it, especially in the event that you don't have a spare. “You might end up paying between $50 and $100 for a replacement, and getting it programmed by the dealer, plus an electronic backup that could cost another $100,” says Mel Yu an automotive analyst at Consumer Reports. A weak battery is among the most common causes for a keyfob's cease to function. If you know how to replace the battery, or if your owner's manual contains instructions, try it yourself. If that doesn't work you'll have to call an expert. A locksmith will be able to help you find the lost fob or have it replaced. A locksmith will likely know the reason why your fob stopped working in the first in the first place. And if your car is an older model that has no built-in smart technology You can save cash by locating the key number plate on your current mechanical backup key (it's typically hidden behind a keychain ornament with a decorative design) and recording it in a secure place, such as in your wallet or on your phone. This will make it much easier for the locksmith to reprogram the new key fob for your car if you ever require it. If your existing key fob is a modern smart key and you want to change it, you'll need to go to an auto dealer or locksmith to deprogram it before getting an entirely new one and this can be more expensive than replacing it. Modern key fobs are protected by rolling-code encryption which stops thieves from getting access to the car. That means that locksmiths need a special programing tool that only the car manufacturer is equipped with, which adds to the overall expense. In the majority of instances, the entire service will be billed at once. This includes any charges for reprogramming a keyfob. Based on the car it could cost anywhere from a mere $20 at some shops to $200 or more at a dealership for cars.