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Car Key Repair – How to Fix a Dead Remote Car remotes provide a wonderful 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 times. If you notice that your key fob is not working, try a few fixes before going to the dealer. These suggestions could save you money. Keyless Entry System Instead of having to fiddle around with keys in your pocket or purse instead, walk up to your car, press a button on the key fob, and then open the doors and start the engine. 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, could be damaged by repeated use or by other causes. If you've had issues with your keyless entry system, there are two options: visit the dealership or contact a local locksmith. The way a keyless entry system works 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 car's doors are not locked and the computer on board is activated. Certain systems have another receiver mounted on the trunk of the car, which opens automatically when you waggle your foot underneath it. Each key fob is assigned an unique identification code 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 the ignition of the car repeatedly in a certain sequence, and could require pulling buttons or levers or levers or removing fuse. When a key fob is programmed to your specific car's keyless entry system, it transmits its digital identity code along with an operation code that tells the car what to do (lock, unlock, or open the trunk). The car's receiver confirms that the transmitter is the person it claims to be through an authentication and encryption process. The computer on board will allow the vehicle to be opened and start the engine when it is authenticated. A savvy criminal could steal and then use the code that is transmitted between the keyfob and the vehicle. This would require a device to record the transmission then transmit it again in the event that the system doesn't anticipate it. Most keyless entry systems use rolling codes to combat this. This ensures that each new transmitter signal received by a vehicle has a counter value that is different from the previous one. Batteries A dead battery is the main reason for a car remote to not function. It's an easy and cheap fix if you have an extra key fob on in your possession to replace the previous one with. Most fobs are powered by watches-style batteries, which can be purchased at big-box stores or hardware stores for less than $10. A quick search on the internet or your car's owner manual should provide instructions on how to disassemble your key fob and replace the battery. Once 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 particular car and tampering with them will render it unprogrammable (and likely to fail). If you must move them, do it very gently because certain key fobs have fasteners that easily pop open and scatter key fob parts throughout your living space. The case of most key fobs has one screwdriver hole. To open it, make use of a pry tool. But, to start, wedge the pry tool along the outside edge of the case like you would when peeling an orange or apple. Do not apply too much pressure since the case of the key fob is generally composed of plastic and is susceptible to breaking or cracking when you apply too excessive force. Be sure to match the size and type of battery to your key fob when you replace it. Some key fobs come with two batteries while others require one. A bad battery could render your remote keyfob useless. If broken car key repair persists, you can try again using your fob's key after installing the new battery. If this fails you'll need to determine whether your fob is experiencing something more complicated that requires professional diagnosis. If this is the case, you might need to have it changed by a dealer or you may need to purchase a new key fob entirely. Buttons The buttons on your key fob are pretty small, and they're packed with delicate electronics. car keys repairs near me 's not a surprise that they're likely to fail from time time. If your car key button suddenly stops working, you'll be able to typically fix it yourself. One of the most common reasons a car key remote fails to function is that dirt or crud has accumulated between the buttons. To clear this up, carefully remove both the batteries and scrub each button by using a cotton swab, dipped in ruby alcohol. Make sure to dry the buttons completely before reinstalling them. It's possible that your key fob has been damaged in some way, such as being dropped on concrete or accidentally scratched. If this is 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 could have stopped working in your vehicle. This is a tiny metal component that's attached to the door lock button on your key fob and it's not uncommon for this sensor to break after long-term use or exposure to weather conditions. Press your key button several times without locking or unlocking your doors. This resets the sensor. If all else fails, you can always test the function of a spare key by opening and locking your doors using it. If the spare key doesn't work, you might need to contact a 24-hour locksmith who offers automobile key repair to make your remote work again. If your car's key fob is working but still not locking or unlocking your vehicle, try to re-programme your computer system. But keep in mind that if you've owned the same key fob for a long time, it's going to need to be programmed every couple of months to ensure that it continues to work properly with your vehicle. It's not an ideal situation but it's better than having to replace the remote completely.