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How to Repair a Car Key Fob Your key fob gets jostled around a lot, so the buttons may be damaged or stuck. Try giving it a thorough check and replacing the battery if you need to. Most cars are powered by a coin style battery that you can buy at big box stores, home improvement retailers and pharmacies. However, some models require special programming equipment that only dealers have. Dead Battery The car key fob makes it easier to start your car and get into it. What happens when you press the button a few times but nothing happens? The most common cause for this is a dead battery. The battery can be easily replaced. You can get replacements in supermarkets and auto parts stores as well as home improvement stores. However certain other features that the key fob has may not work. This could be due to a mechanical issue, an electrical problem or even a programming error within the car's receiver. In these situations it's recommended to consult an expert. The majority of manufacturers include an electronic slot inside the fob for use in the event of a dead cell. In the majority of cases the slot for keys is hidden behind a cover on the fob handle. The physical key can be inserted into the slot, which allows you to unlock your door and start your car. Be sure to re-insert the key fob when you start the vehicle! If you own a Ford with SYNC Connect, you are able to start the car with the key fob. The cupholder on the majority of Fords with SYNC Connect has a backup “E blade”. It is a mechanical key that can be used to press the starter button, should your key fob fails to start the vehicle. For the best use of this feature, make sure the battery is charged. You can also consult the owner's manual to find out how to use it. If you're still experiencing issues with your car after replacing the battery on your key fob It could be the right the right time to contact an expert locksmith or your dealer to have the battery replaced or repair the fob. In certain cases the key fob could be programmed into your car with a new battery at the dealership or at selected Interstate All Battery Center locations. This will only work as long as the antennas and circuit board are not damaged. Damaged Buttons The buttons on your car key fob are likely to suffer an extensive amount of wear and wear over the course of their lives. They're prone to drops and also spend a lot of time being tossed around in purses and pockets. The jolting may cause internal components to loosen or become damaged, leading to them not responding when you press them. Simple steps can resolve this issue, however sometimes you may have to take your device to an expert locksmith. Aside from an inoperable battery, the most common reason why a key fob for a car will not work is because it needs new batteries. These tiny coin-shaped batteries are relatively inexpensive and are easy to find them at hardware stores or big-box retailers. You can also find videos on how to replace the battery for your key fob on YouTube or in your owner's manual. However, it's important to know that some key fobs require a specific procedure to enter the programming mode needed to change the battery. In these instances you'll have to consult your owner's manual and/or a reputable auto locksmith to ensure you're following the correct procedure. The fob you have left in extreme hot or cold temperatures can also cause it to stop functioning, especially in the event that the battery has gone out. If this happens, you will require contacting an automotive locksmith or dealer for a new fob. If you are still unable to press the buttons on your key fob, it could be due to the fact that the contacts are worn out. These contacts are rubber-like and coated with an electricity-conducting film, but they can start to wear out over time due to repeated use. You can fix this by taking the key fob apart and placing a piece of metallic tape over the worn-out contacts. It is important to be aware that certain key fobs are extremely difficult to open. They can only be opened safely using specialized tools available from a dealership. If you try to open it using an screwdriver, or any other tool, you could end in causing damage to the internal circuit board. key repairs could lead to an even more costly repair bill. Circuit Board Issues The circuit board may be the cause of your key fob not functioning in the same way it used as well. The circuit board is a small electronic chip inside the case that sends signals to your car telling it whether or not to lock your doors, open the trunk and even turn off your ignition. If the circuit board is damaged the key fob will not be able to transmit these signals. If you are skilled in the field you can repair a damaged circuitboard yourself. Begin by removing the battery and separating the rubber button and holder assembly from the circuit board. Clean the contacts and plastic frame using rubbing alcohol and cotton swab. This should eliminate any corrosion that blocks the circuit board from transmitting signals. Then, once you've reassembled the key fob, be sure it can enter its programming mode. Go through the owner's manual to find instructions. Most vehicle manufacturers also have videos online that show you how to accomplish this. If you're not confident enough to complete it yourself, bring your key fob to a locksmith who is specialized in the model of your vehicle. Some of the more modern key fobs have an integrated receiver that allows you unlock your trunk, open your doors and turn on your ignition from some distance. Generally, these are much more reliable and can work over a greater range. If your key fob does not work as well as it did previously, it may have a faulty internal problem or an external antenna that is not working properly. If you can't get your key fob working the most likely reason is a dead battery. It is cheap and easy to replace. If the circuit board or buttons of the fob are damaged, it's going to need to be professionally repaired and programmed again. Many dealerships will provide this service but you can also locate a shop that is specialized in your car's brand. Forgotten Key It can be an absolute nightmare if you lose the car key fob. It's possible to turn your house upside down, retracing your steps and searching all over, including in bags, drawers and under couches, and even in your cat's bed. You'll eventually find it. Prevention is the best method to avoid losing your key fob. If you've even a touch of minor ADD or just forgetful, make several copies and give them to close friends and family members, so that when you lose yours, you don't spend four hours covered in sweat and cursing yourself for the rest of your life. Most cars have key fobs that let you lock and unlock your doors. They also, in some cases set off an alarm or open the trunk. However, some of the more sophisticated models have even cooler features, like the capability to call your car at the push of a button. This feature isn't included in every model but if you own one of the cars that do it (Genesis GV60 and Hyundai Sonata are two examples) it's an awesome feature to have. The good thing is that if you have an extra key fob that's programmed to your car, then you can use it to start your car in the event you lose the original. You can also talk to an automotive locksmith to have them create the new key fob which has was programmed to your specific vehicle. But before you do consult with your dealer to see if they can offer a replacement key fob at a lower cost. If you don't have an extra key, the only way to get your car started is to contact an auto locksmith to come out and cut a new key or replace the current key fob with a blank. A dealer can also do this however you'll need to get your car towed along with documents to prove ownership. These services are fairly inexpensive in comparison to the cost of a replacement key at the dealership.