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Car Key Repair – How to Fix a Dead Remote Car remotes offer excellent convenience for drivers. They allow you to unlock doors, gain access to trunks and even start the engine. However, they can cease to function at uninviable times. Before you go to the dealer, consider some quick solutions in case your key fob isn't functioning. These steps could save you money. Keyless Entry System Rather than needing to fumble around with keys in your pocket or purse instead, walk up to your car, hit a button on the key fob, then unlock the doors and start the engine. It's a practical feature that has made the experience of car driving more comfortable and more secure. However, just like any other device that has a keyless entry system, the keyless entry system may be damaged by repeated use or due to other reasons. If you've encountered issues with yours, there are two options: Go to the dealership or contact the local locksmith. The way a keyless entry system functions is by sending radio signals and then searching for a response signal from the key fob. If the system recognizes the signal, it will trigger to unlock the vehicle doors and also activate the computer onboard. Certain systems have a second transmitter on the trunk of the car which opens when you move one foot underneath it. Each key fob comes with a unique digital identification code, which is issued by the manufacturer. A unique process of technology known as “programming” is used to make sure that the fob is set up with a specific car's system. This involves turning on the ignition of the car repeatedly in a predetermined sequence. It may also require pushing or pulling buttons or levers or levers or removing the fuse. Once a key fob has been programmed to your specific vehicle's keyless entry system it transmits its digital identity code, along with 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. The onboard computer will allow the vehicle to be opened and start the engine if it's authenticated. There are fears that a skilled criminal could intercept the code transmitted between the key fob and the car. This would require a device to record the transmission and then retransmit it in the event that the system doesn't anticipate it. The majority of keyless entry systems employ the rolling code method to prevent this. This ensures that every new transmission signal received by a car has a counter that is different from the previous one. Batteries The most common cause of the car remote key fob not working is an inoperative battery. It's an easy and cheap fix when you have another key fob at in your possession to replace the previous one with. Fortunately, the majority of fobs have regular watch-style batteries that can be purchased at hardware stores or big-box retailers for as little as $10. A quick search of the internet or your car's owner's manual will provide directions on how you can disassemble the fob that you have been using and swap out the battery. Be careful not to damage any circuits or antennas inside the case once you've removed the battery. They're likely to hold the key fob's programming to your particular car and tampering with them can cause it to become impossible to program (and likely to fail). If car remote key repair near me have to move the key fobs, be cautious. Certain key fobs might have fasteners which can easily be removed and scatter key fob pieces across your living space. The majority of key fobs have one hole that can be used with the screwdriver or another pry tool to pop open the case, but it's a good idea use your tool to wedge it around the outside of the case first, just as you would peeling an orange or apple. Do not apply too much pressure, since the case of the key fob is typically made of plastic and can break or crack if apply too much pressure to it. Make sure you match the size and type of battery to your key fob when you replace it. Some key fobs have two batteries, while others only need one. The wrong battery can render your remote keyfob useless. After the new battery has been put in place, test your key fob again to see if it fixes your problem. If this doesn't work you'll be required to determine if your fob is suffering from something more complicated that requires professional diagnosis. If this is the case, you might require it to be reset by a dealer or purchase a new key fob entirely. Buttons The buttons on your key fob are pretty tiny, and packed with delicate electronics. It's not surprising that they occasionally fail. If the car key button suddenly ceases to function, you can generally fix it yourself. The most common reason the car remote stops working is due to dirt or crud has gotten trapped between the buttons. To fix this, remove the batteries in a careful manner and clean each button using the help of a cotton swab which has been dipped into ruby alcohol. Make sure to dry the batteries completely before reinstalling them. It's also possible that the key fob was damaged somehow, perhaps dropped on concrete or unintentionally scratched by something sharp. If this is the case using a different key fob to verify its function could reveal that the one you have simply been damaged and needs to be replaced. The door lock sensor may have stopped working 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 uncommon for this sensor to break following long use or exposure to weather conditions. Press your key button a few times without locking or unlocking your doors. This will reset the sensor. If all else fails, you can always test the operation of a spare key by trying to lock and unlock your doors using it. If the spare key does not work, you may need to call a locksmith 24 hours a day who provides repair of car keys to get your remote working again. If your car key button is working, but it's still not locking or unlocking the vehicle, you can try reprogramming your computer system. If you've used the same key fob a time, it may require reprogramming every few months to to work with your vehicle. It's not an ideal situation, but it's better than having to replace your remote completely.