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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. However, they may stop working at inconvenient times. If you find that your key fob not working, try a few quick fixes before heading to the dealership. These steps could save you money. Keyless Entry System Instead of having to fiddle around with keys in your purse or pocket instead, stroll up to your car, push a button on the key fob, and then open the doors and start the engine. It's a simple function that makes driving a car more relaxing and safe. However, just like any other device, the keyless entry system can fail due to repeated use or due to other reasons. If you've encountered issues with yours, you have two options: visit the dealer or contact the local locksmith. The way that a keyless entry system works is by releasing radio signals and then looking for a corresponding response signal from the key fob. If the system can recognize the signal, it will trigger to unlock the car doors and activate the onboard computer. Some systems have a second receiver on the trunk of the car that will open automatically when you put your foot under it. key repairs is equipped with a unique digital identification code that is issued by the manufacturer. A proprietary technical process called “programming” is used to make sure that the fob is set up to work with the specific car's system. This involves turning on the ignition of the vehicle repeatedly in a predetermined sequence. It may also require pushing or pulling levers or buttons or removing the 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 instruct the car on what to do (lock or unlock the trunk). The receiver on the car confirms the identity of the transmitter through an authentication and encryption process. If it's authorized, the computer on board unlocks the vehicle and begins the engine. There are fears that a clever criminal could intercept the code transmitted between the key fob and the car. This would require the use of a special device that records the transmission, and then transmits it again in the event that the system doesn't want it to. To prevent this from happening issue, the majority of keyless entry systems rely on rolling code, which ensures that each new transmitter signal received by the vehicle has a different counter value than the previous one. Batteries A dead battery is the most frequent reason for a car remote to not function. If you have an extra key fob it's a simple and inexpensive fix. Most fobs are powered with watch-style batteries that are available at big-box stores or hardware stores for less than $10. A quick search of the internet or your vehicle's owner's manual will provide directions on how to take apart your key fob and replace the battery. After you've removed the battery, be sure not to damage any of the circuits or antennas in the case. If you do this the key fob could be unprogrammable and won't work. If you must move them, do it slowly, as some key fobs come with fasteners that are able to open and scatter key fob pieces throughout your living space. Most key fobs come with one hole that can be used with a screwdriver or other pry tool to pop open the case, however it's best to wedge your pry tool around the outside of the case first, like you were peeling an orange or apple. Be careful not to apply too much pressure, as the case of the fob is usually constructed of plastic and could break or crack if you apply too much force to it. If you're ready to replace the battery, be sure to match the size and style to your key fob. Some key fobs come with two batteries, while others only need one. The wrong battery could make 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 not, you'll need to determine whether your device has a more complicated issue that requires professional diagnosis and repair. It could be necessary to have your key fob reprogrammed by an authorized dealer or purchase an entirely new one. Buttons The buttons on your key fob might be tiny, but they are packed with electronics. It's not a surprise that they occasionally fail. The good news is, when your car's key button stops functioning, there's usually something you can do to fix it yourself. The most frequent reason why that a car remote stop working is due to dirt or crud has gotten trapped between the button. To fix this, remove the batteries carefully and scrub each button with the help of a cotton swab which is dipped in ruby alcohol. Make sure to dry the batteries completely before reinstalling them. It's possible that your key fob was damaged in some way, like being dropped on concrete or accidentally scratched. If that's the case, using an alternative key fob to check its functionality could reveal that the one you have been damaged and requires to be replaced. The door lock sensor may have been unable to function in your vehicle. It's 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 after prolonged usage or exposure to harsh weather conditions. Press your key button several times without locking or unlocking your doors. This resets the sensor. If all else fails, you could test the functionality of an extra key by trying to open and close your doors with it. If the spare key does not work, it could be necessary to locate an emergency locksmith who can provide auto key repair to get your remote working again. If remote key repair is working but still not locking or unlocking your vehicle, you may try to re-programme your computer system. If you've had the same key fob for a time, it might need to be reset every few months to continue working with your vehicle. This isn't the best option however it's much better than having to replace your remote completely.