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Car Key Repair – How to Fix a Dead Remote Car remotes provide a excellent 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. Before you visit the dealer, consider some quick solutions when your key fob stops working. These tips could save you money. Keyless Entry System You don't have to look for keys in your pockets or purse. Just walk to your car, press the button on the keyfob, and the doors will unlock and the engine will start. It's a practical feature that has made the experience of car driving more comfortable and safer. The keyless entry system, as any other device, can be damaged by repeated use or by other factors. If you have problems with yours, you can either go to the dealer or contact an locksmith. The way a keyless entry system operates is by sending out radio signals and then searching for a corresponding response signal from the key fob. If the system recognizes the signal, the vehicle's doors are not locked and the onboard computer activated. Some systems include an additional receiver in the trunk of the car, which will open automatically when you put your foot on it. Each key fob is given an individual digital identification number by the manufacturer. The fob is programmed by a proprietary process called “programming”. This involves turning on the ignition of the vehicle repeatedly in a certain sequence, and may also require pulling levers or buttons or removing fuse. Once a key fob has been programmed into your car's keyless system, it transmits a digital identification code and a function code that tell the car what to (lock or unlock the trunk). The receiver in the car confirms that the transmitter is the person it claims to be using an authentication and encryption procedure. The computer in the car will allow the vehicle to be opened and start the engine if it's authenticated. A clever criminal could intercept and then use the code that is transmitted between the keyfob and the vehicle. This would require a specific device to record the transmission and then retransmit it later in the event that the system doesn't anticipate it. Most keyless entry systems use the rolling code method to stop this. This ensures that every new signal from a transmitter received by a car has a counter value that is different from the previous one. Batteries The most frequent reason for a car remote key fob not working is a dead battery. It's a simple and inexpensive fix when you have an extra key fob on your desk to replace the old one with. Fortunately, most fobs utilize standard watch-style batteries that can be purchased in hardware stores or big-box retailers for as little as $10. You can find the steps to disassemble the key fob on the internet or in your vehicle's manual. After you've removed the battery, be careful not to disrupt any circuits or antennas inside the case. They're likely to hold the key fob's program to your specific car and any disruption to them will render it unprogrammable (and most likely not work). If you have to move the key fobs, be careful. Certain key fobs might come with fasteners that are able to open and scatter key fob pieces all over your living space. Most key fobs come with one hole that allows the screwdriver or another pry tool to pop open the case. However, it's a good idea put your tool on the outside of the case first, just as you were peeling an orange or apple. broken car key repair near me apply too much pressure since the case of the key fob is usually made of plastic, and can crack or break when you exert too much force. When you're ready for replacing the battery, be sure to match its size and type to your key fob. Some fobs require two batteries, whereas others only have one. Using the incorrect battery could render your key fob remote useless. If the issue persists, you can try again using your key fob after installing the new battery. If this fails then you'll need to determine whether your fob is suffering from a more complex issue that requires professional diagnosis. If this is the case, you may require it to be reprogrammed by a dealer, or you may need to buy a replacement key fob completely. Buttons The buttons on your key fob could be tiny, but they are packed with electronic components. It's not a surprise that they're likely to fail from time to time. The good news is that if your car key button fails to function, there's typically something you can do to fix it yourself. One of the most common reasons a car key remote fails to function is due to dirt or dust that has lodged between the buttons. To get rid of this issue, take off the batteries in a careful manner and scrub each button with a cotton swab that is dipped in the rubbing alcohol. Be sure to dry them thoroughly prior to reinstalling the batteries. It's possible that the key fob has been damaged somehow, perhaps dropped on concrete or unintentionally scratched by something sharp. If this is the case, using another key fob to check its functionality may reveal that yours has simply been damaged and needs to be replaced. Another possibility is that the door lock sensor in your vehicle has stopped working. This is a tiny metal part that's connected to the door lock button on your key fob, and it's not unusual for the sensor to break during long-term use or exposure to weather conditions. To reset the sensor just press your key fob a few times without locking or unlocking your doors to reset it. If all else fails you can always test the functionality of a spare key by opening and locking your doors with it. If the spare key does not work, it could be necessary to locate an emergency locksmith who can provide automobile key repair in order to get your remote operating again. You can reprogram your computer if your car's key fob works but cannot lock or unlock your vehicle. If you've had the same key fob for a while, it may require reprogramming every few months to continue to work with your vehicle. It's not an ideal situation however it's much better than having to replace your remote completely.