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Car Key Repair – How to Fix a Dead Remote Car remotes are a great convenience for drivers. They can unlock doors, open trunks, and even start the car. These remotes are prone to malfunction at the most inconvenient of moments. If you notice that your key fob is no longer working, try a few quick fixes before going to the dealership. These steps may save you money. Keyless Entry System You don't have to look for keys in your purse or pockets. Just walk to your car, press the button on the keyfob, and the doors will be opened and the engine will start. It's a simple function that makes driving a car more enjoyable and secure. The keyless entry system, as any other device, could be damaged by repeated use or by other elements. If you are having issues with yours, you may either go to the dealer or contact a locksmith. The way a keyless entry system works is by sending out radio signals, and then searching for a response signal from the key fob. If the system recognizes the signal, it's triggered to unlock the vehicle doors and activate the computer onboard. Certain systems include a second transmitter on the trunk of the car that opens it when you waggle a foot under it. Each key fob comes with an individual digital identity code that's assigned by the manufacturer. The fob is programmed with a unique process called “programming”. This involves turning the ignition of the vehicle several times in a specific sequence. It may also require pushing or pulling buttons or levers, or removing fuse. Once a key fob has been programmed to your car's keyless entry system, it transmits the digital identity code as well as a function code that instructs the car what to do (lock in, unlock, or open the trunk). The car's receiver verifies the transmitter's identity through an authentication and encryption process. If it is authorized, the onboard computer unlocks vehicle and begins the engine. There are fears that a criminal with a sly approach could intercept the code that's transmitted between the key fob and the car. This would require a special device to record the transmission and then retransmit it when the system isn't expecting it. To combat this, most keyless entry systems use a method called rolling code that guarantees that each new transmitter signal received by the vehicle has a different counter value than the previous one. Batteries A dead battery is the main reason for car remotes not to function. If you have an extra key fob it's a cheap and easy fix. Most fobs are powered by watches-style batteries, which can be purchased at big-box stores or hardware stores for less than $10. You can find instructions to disassemble the key fob on the internet or in your vehicle's manual. After you've removed your battery, be sure not to damage any antennas or circuits within the case. remote key fob repair near me are likely holding the key fob's program to your car's specific model, and messing with them can cause it to become impossible to program (and probably not work). If you need to move key fobs, be careful. Some key fobs may come with fasteners that are able to open and scatter key fob pieces across your living space. The case of most key fobs is equipped with a single screwdriver hole. To open it, use a pry tool. To begin by putting the tool around the outer edge of the case, just as you would when peeling an apple or orange. Do not apply too much pressure, since the case of the fob is usually made of plastic and may break or crack if you apply too excessive pressure to it. Make sure you match the size and type of the battery to your key fob when replacing it. Certain fobs require two batteries, while others only have one. The wrong battery can quickly render your remote key fob useless. If the issue continues then you can try it again with your fob's key after installing the new battery. If this doesn't work then you'll have to determine if the fob is suffering from an issue that is more complicated and requires a specialist diagnosis. You may need to have your key fob reset at an authorized dealer or purchase an entirely new one. Buttons The buttons on your key fob may appear small but they're loaded with electronics. It's not a surprise that they're destined to fail from time to time. If your car key button suddenly stops working, you'll be able to usually fix it yourself. The most common reason the car remote stops functioning is due to dirt or crud has been stuck between the button. To clear this up take care to remove both batteries and scrub each button using a cotton swab that has been dipped in alcohol rubbing. Be sure to dry them completely before replacing the batteries. It's possible that the key fob was damaged somehow, perhaps dropped on concrete or accidentally scratched by something sharp. If this is the situation, you can check your key fob's functionality by using a different one. Another possibility is that the door sensor for your car's lock isn't working anymore. The sensor is a tiny metal piece that is connected to the key fob's door lock button. It's not common for it to fail due to weather conditions or extended usage. Press your key button a few times without locking or unlocking your doors. This resets the sensor. If nothing else works, you can always test the function of a spare by unlocking and locking your doors using it. If the spare key does not work, you might need to call a locksmith 24 hours a day who can repair your car keys to make your remote work again. If your car's key fob is working, but it's still not locking or unlocking your vehicle, you can try reprogramming your computer system. However, keep in mind that if you've owned the same key fob for a long time, it's likely to need to be programmed every couple of months to ensure that it remains in sync with your vehicle. It's not an ideal situation but it's better than having to replace your remote entirely.