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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 may experience issues with time, like the loss of functionality. While some issues may require professional attention, the majority can be resolved at home. The first step is usually to change the battery. The majority of fobs are powered by flat watch-style battery, which are easily found at auto parts or hardware stores. Dead Battery It can be a major issue when a key fob's battery is dead. This Web page is especially the case when you are far from home. There are methods to get your vehicle back on the road in case you're keyless entry system isn't working. One of the first things you should check is to determine if the buttons on your key fob work. If they do, then the issue could be with the car's locks instead of the fob. If your keys won't unlock, you might find an electronic slot in the trim around your door handles or elsewhere on your vehicle (consult the owner's manual). Insert Look At This and try again. If this doesn't work there are some cars that have an app that can unlock 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. It is also important to ensure that your key fob isn't draining your car's battery by sitting on it. A dead fob can quickly drain your battery, particularly when you utilize its remote functions while watching TV or talking on the phone. Holding the key fob towards the start button may cause an ignition key fob with low battery. This simple fix can save you from a trip to your dealer or Interstate All Battery Centers. If your key fob won't work try testing it in a vehicle with a push-button starter. If it doesn't work, you may need to replace the battery in your fob. It's a good idea to keep a spare key fob in your bag or purse. Damaged Buttons It is possible that your key fob is damaged and has a button. Your key fob is likely to have an electronic circuit board that has “contact pads” for each button, and these tiny pads are coated with an electrically conducting film which wears down over time. This wear can make your fob respond less or not at all. The pad that contacts car keys can be easily replaced with an flat-head screwdriver. If, however, the key fob is badly damaged or broken in any way, it may be more difficult to remove the case, and you'll need to take the fob to an auto shop for repair. It's not uncommon for keys to be dropped on hard surfaces, walked on, or exposed to water. All of these can cause physical damage to the keys, which could result in them breaking or snapping them. This can also cause internal damage to the fob, which could lead to an issue. It's a good idea, therefore, to always carry an extra fob in your purse or pocket in case the one you're currently using fails. If the buttons on your key fob aren't working in the way they should, first check to make sure the battery is in good condition. Be aware that key fobs aren't a special kind of electronic device – most of them run on the same two-dollar batteries used in hearing aids and watches that are readily accessible at drug stores, hardware stores, and online. If the battery is fine, it's likely that the buttons are dirty or worn down and can be cleaned using a damp cloth to wipe them down. If the buttons don't work, you can test an alternative car key fob. This will help you determine if the problem is yours or a specific model. If the other key fob is working, then yours might need to be reprogrammed or replaced. Reprogramming The world of car keys fobs is more complicated than most myths suggest. The basic fobs function using radio frequency signals that are assigned to specific cars. The fobs need to be programmed correctly in order to unlock and start the vehicle. Unfortunately, reprogramming a fob isn't as simple as pressing a few buttons, and with a few exceptions, it must be handled by a dealer. The process of reprogramming a fob is based on the model and model year of your car It is therefore essential to refer to the owner's manual for step-by-step instructions. Certain manufacturers, such as Mercedes, use proprietary technologies that only dealers are capable of creating a brand new key fob, and then sync it to your vehicle. However, car remote key repair can offer this service as well, so be sure to review reviews and prices prior to choosing a shop. Certain car models erase other fobs when they're changed, so you'll have to have any additional fobs professionally programmed as well. This can be expensive especially if the fob has stopped working. It's always wise to have at minimum a backup mechanical key that you can use to open the doors and trunk, even if it won't start the car. If you decide to try and reprogram your fob on your own be prepared for a gruelling journey. There are numerous guides available online that promise success however, you're likely to be disappointed. Many of these guides are written by people with no knowledge of this field, and they're often based on unsubstantiated claims. Some even claim that you can program your own car key fob in just a few clicks, which is extremely confusing. The majority of key fobs are held by a plastic clip that's easy to loosen, however, the battery is within the circuit board, which means you'll have to carefully pry it out with a tool. You should be able to find the button battery. It's usually a small battery for a watch, which you can purchase at most pharmacies or at home improvement stores. It's usually simple to replace the battery. Before replacing the entire unit, you can try replacing the button cell first. Replacement If your car key fob has been damaged or fails to function it is crucial to know that there are several options to fix the issue. It's as simple as replacing the battery or changing the program on the key fob, however a more extensive repair may be required. A spare fob could be useful in the event that one is stolen or lost. The majority of modern key fobs have an incredibly small physical key in addition to the electronic components, making them both pricier and more complex to replace than traditional keys. Some “smart” fobs also include a remote starter built-in. It's important to know that it could take an hour or more to cut and program the replacement fob to your vehicle. Fobs make use of a tiny radio transmitter on a circuit board to communicate with the car's receiver. By pressing a button, the transmitter emits an RF signal unique to the car's receiver. The receiver detects and compares the signal with preprogrammed codes. This allows the driver to unlock the vehicle and start it from a distance without putting the key in the ignition or turning a lock. If the buttons on your key fob do not respond or operate intermittently, it can indicate that they've been damaged by water or other causes. 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 it or purchasing a new fob. You should check with a local auto dealer or a locksmith prior to purchasing a replacement keyfob to ensure it's compatible with the security system of your vehicle. Fobs purchased from a third party can be cheaper, but you should research reviews and brands before attempting to program them yourself. While some fobs are able to be replaced by a reputable locksmith others require special equipment to program them that can only be used by a car dealer or auto technician.