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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 have issues over time, including an inability to function. Certain issues might require professional attention, but most can be resolved at home. The first step is usually to replace the battery. Most fobs utilize flat watches that are readily available in hardware stores or auto parts stores. Dead Battery It can be an incredibly problem when the battery of a key fob dies. This is especially true when you're away from home. There are ways to get your vehicle back on the road in case your keyless entry system isn't working. One of the first things you should examine is whether the buttons on your key fob work. If they do, the problem may lie in the locks of your car instead of the fob. If your keys do not unlock, you may find a mechanical slot within the trim around your door handles or elsewhere in your car (consult the owner's manual). Insert the mechanical key and try again. If this doesn't unlock the door, some cars have an application that lets you unlock it remotely. For example, the FordPass Connect app, myChevrolet mobile app and myMazda app allow owners to unlock the doors using smartphones. However, these apps are subject to a monthly cost. It is also important to ensure that your key fob does not drain the batteries of your car by being plugged into them. A dead key fob can drain your battery quickly especially if it's used to control your phone or TV while you're watching. A key fob that's just low on battery can be activated by bringing it up to the start button. This simple fix could save you from having to visit your dealer or certain Interstate All Battery Centers. If your key fob does not work, you can test it in a vehicle with an ignition button. If it doesn't, you may need to replace the fob battery. This is why it's a good idea to keep a spare key fob in a purse or backpack. Damaged Buttons It is possible that your key fob is damaged and has a button. Your key fob likely contains a circuit board with “contact pads” for each button, and these little pads are coated with a conductor of electricity that wears down over time. This wear could cause your fob to respond slower or not at all. The pad that contacts car keys can be easily replaced with an flathead screwdriver. If the case is damaged or badly smashed, it will be difficult to open. You'll have to take it to an auto shop to repair the fob. 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, such as bending or snapping them. This could also affect the internals of the fob and could cause malfunction. remote key fob repair near me 's a good idea therefore, to always carry a spare fob in your wallet or pocket in case the one you currently have fails. Examine the battery first to determine If your key fob's buttons aren't responding like they should. Be aware that key fobs don't come with a particular kind of electronic device – most of them run on the same two-dollar batteries that are used in hearing aids and watches and are accessible at hardware stores, drug stores, and online. If the battery is in good condition it is possible that the buttons are dirty or worn out. You can easily clean them with a damp cloth. If they're still not responding, try a different key fob to see whether the problem is with yours, or a specific kind of car key fob. If the other key fob functions, then yours might need to be reset or replaced. Reprogramming The hidden world of car key fobs is more complicated than the myths would suggest. The basic fobs function using radio frequency signals that are assigned to specific vehicles. The fobs must be programmed correctly in order for them to unlock and start the vehicle. Unfortunately the process of reprogramming a fob isn't as easy as pressing a few buttons, and with very few exceptions it must be handled by a dealer. The procedure of reprogramming a fob is dependent on the manufacturer and model year of your vehicle and it's essential to consult the owner's manual for step-by-step instructions. Certain manufacturers, such as Mercedes, use proprietary technologies that only the dealership is capable of creating a brand new key fob and resync it to your vehicle. Some independent shops may offer this service, so check reviews and prices before choosing the right shop. Certain models of cars will erase other fobs once they've been changed, so you'll have to have any additional fobs professionally programmed as well. This can be expensive particularly if your fob isn't working anymore. Even in the event that the mechanical key will not start the car, it's a good idea to have a backup option that can open the doors and trunk. Be prepared for a difficult experience if you choose to reprogram your fob by yourself. There are numerous guides available online that promise success, but you'll likely be disappointed. Many of these guides are written by people who have no prior experience in this field and often are based on unsubstantiated claims. Some even claim that you can program your own car key fob with just a few clicks, which is extremely misleading. Most key fobs are held in place by a plastic clip which is easy to remove, however, the battery is within the circuit board, which means you'll have to carefully pry it out using a tool. Once you've gotten inside, you should be able locate the button cell battery which is typically a small watch battery that can be purchased in most pharmacies or home improvement stores. Removing the battery is typically simple, and it's always a good idea to test first before replacing the entire unit. Replacement There are several ways to fix a damaged or damaged car key fob. It could be possible to resolve the issue quickly by replacing the battery or reprogramming the key fob. However an extensive repair might be required. A spare fob can be helpful in the event that one is stolen or lost. Modern key fobs are more expensive and difficult to replace since they have a physical key as well as the electronic. Some “smart fobs” even include remote starters. It's important to know that it could take up to an hour to cut and program a replacement fob for your vehicle. Fobs use a small radio transmitter mounted on a circuit board to communicate with the car's receiver. By pressing a button, the transmitter emits an RF signal that is unique to the car's receiver. The receiver recognizes and compares the signal to preprogrammed codes. This allows the driver to open the car and begin it from a distance without inserting the key into the ignition or turning a lock. If the buttons on your key fob fail to respond or function intermittently it could indicate that they have been damaged by water or other causes. You can fix the fob if you take it apart and check for buttons that are not responsive or broken. If this doesn't fix the problem, you can try reprogramming your fob or getting an entirely new one. You should check with an auto dealer in your area or a locksmith before buying a replacement keyfob on the internet to make sure it's compatible with the security system of your vehicle. The fobs from the aftermarket can be less expensive but you should study the brands and read reviews prior to attempting to program them yourself. While some fobs are able to be replaced by a trusted locksmith, others require special equipment to program them that can only be used by a car dealer or auto technician.