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Car Key Fob Repair – How to Get Back on the Road Even If Your Keyless Entry isn't Working Key fobs can experience problems over time, including a loss of functionality. While some issues may require expert attention, most are fixable at home. Changing the battery is often the first step. Most fobs utilize flat watches that are easy to find at auto parts stores. Dead Battery It can be a real inconvenience when a key fob's battery goes out. This is especially the case when you are far from home. There are solutions to get your car back on the road in case your keyless entry system has stopped working. The first thing to check is to see if the buttons on the key fob still work. If they do, the problem may lie in the locks of your car instead of the fob. If the keys won't unlock try looking for a mechanical key slot located in the trim of your door handle or somewhere else on the car (consult the owner's manual). Insert the mechanical key and try again. If this doesn't work there are some cars that have an app that lets you unlock the doors remotely. For example the FordPass Connect app, the myChevrolet mobile app, and myMazda app allow owners to open the doors using smartphones. However, these apps require an annual cost. Also, make sure whether your key fob won't drain your car's batteries by sitting on them. A dead key fob will quickly drain your battery, especially if you use its remote features while watching TV or speaking on the phone. A key fob that's just low on battery can sometimes be activated by holding it right up to the start button. This simple fix could save you from having to visit your dealer or Interstate All Battery Centers. You can also determine whether your key fob is actually dead by trying it in another vehicle that has push-button ignition. If it's not working the battery of the fob requires replacement. This is why it's a good idea keep a spare key fob inside your bag or purse. Damaged Buttons It is possible that your key fob is damaged and has a button. Your key fob contains a circuit with “contact pads” that are covered with an electrically conductive film. The film wears away over time. This wear can cause your fob to react more slowly, or even not to respond at all. The pad that contacts the car keyfob is easily replaced using a flat-head screwdriver. If the key fob has been badly smashed or harmed in any way, it might be more difficult to open the case, and you'll need to take the fob into an auto shop for repair. It's not uncommon for keys to be dropped on hard surfaces, tripped on or exposed to water. All of these events can cause physical damage to keys, such as bending or snapping them. This could also cause internal damage to the fob and result in a malfunction. It's a good idea therefore, to always carry a spare fob in your purse or in your pocket in case the one you're currently using is damaged. If the buttons on your key fob aren't responding as they should, first make sure the battery is in good working condition. Remember that key fobs aren't any special type of electronic device – the majority of them use the same two-dollar batteries that are used in watches and hearing aids, which are readily accessible at drug stores, hardware stores, and even online. If the battery is in good condition it is possible that the buttons are worn or dirty. You can easily clean them using a damp cloth. If they're still not responding, test a different key fob to determine if the issue is with yours or with a particular type of car key fob. If the other fob is working, it's likely that your key fob has to be reprogrammed or even replaced completely. Reprogramming The secret world of car keys fobs is more complex than the myths that surround it suggest. The basic fobs operate by using unique radio frequency signals that are assigned to specific vehicles. The fobs must be properly programmed to allow unlocking and starting the vehicle. Reprogramming a key fob not as simple as pressing several keys. It's usually handled by the dealer. Check the owner's manual for more detailed instructions. Some manufacturers, such as Mercedes have their own proprietary technology that ensures only dealerships can design an entirely new fob and then sync it to your vehicle. Some independent shops may also offer this service, so check reviews and prices before choosing the right shop. Certain car models erase all other fobs if they're programmed again. This means that you'll have to have additional fobs programmed by a professional. This can be costly, especially if you're down to one functioning fob. It is always advisable to have a spare mechanical key that you can use to open the trunk and doors even if it's not able to start the car. Be prepared for a frustrating experience if you choose to reprogram your fob yourself. You'll be disappointed with the countless online guides that promise success. A lot of these guides were written by people who have no experience and are based on unsubstantiated assertions. Some even claim that you can program your own car key fob in only a few clicks, which can be very false. car key fob repair of key fobs are held by a clip made of plastic which is easy to remove, but the battery is inside the circuit board, which means you'll have to carefully pry it out with a tool. car keys repairs should be able find the button battery. It's usually an insignificant battery for a watch that is available at most home improvement or pharmacies. It's typically easy to replace the battery. Before replacing the entire unit, you can try replacing the button cell first. Replacement If a car key fob has been damaged or isn't functioning, it's important to know that there are several options to remedy the problem. It's as simple as replacing the battery or programming the key fob however a more extensive repair might be required. A spare fob is useful in the event that one is lost or stolen. The majority of modern key fobs have a small physical key in addition to the electronic components which makes them more expensive and more complex to replace than traditional keys. Some “smart” fobs also come with a remote starter. It's important to understand that it could take up to an hour to cut and program a replacement fob for your vehicle. Fobs make use of a tiny radio transmitter that is mounted on a circuit board to communicate with the car's receiver. Pressing a button activates the transmitter, which transmits an RF signal that is unique to the car's receiver. The receiver recognizes the signal and validates it against the preprogrammed codes. This allows the driver to start the vehicle from a distance without the need to put the key in the ignition. If the buttons on the fob you have purchased fail to respond or operate intermittently it could indicate that they've been damaged due to water or other elements. You may be able to repair the fob by disassembling it and examining it for broken or non-responsive buttons. If this doesn't solve the issue, try reprogramming your fob or buying a new one. Before purchasing a replacement key fob on the internet, consult an expert locksmith or your local auto dealer to ensure that it's compatible with the security system of your vehicle. There are a variety of aftermarket key fobs available cheaper, but it's important to study the brands and read reviews before trying to program them. Certain fobs can be modified by an accredited locksmith however, other models require programming equipment that only a mechanic or dealer can utilize.