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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 engine. But, these remotes sometimes cease to function at uninviable times. Before you go to the dealer, consider some quick fixes in case your key fob isn't working. These suggestions could save you money. Keyless Entry System There's no need to search for keys in your purse or pockets. Just walk to your vehicle, press the button on the keyfob, and the doors will unlock and the engine will begin. It's a useful feature that has made the world of car driving more enjoyable and more secure. The keyless entry system, just like any other device, could be damaged by repeated use or other causes. If you have problems with yours, you may either visit the dealer or call a locksmith. The way a keyless entry system functions is by releasing radio signals and then searching for a corresponding response from the key fob. If the system recognizes the signal, it will trigger to open the doors of the vehicle and activate the computer onboard. Some systems have an additional receiver in the trunk of the car, which will open automatically when you put your foot on it. Each key fob comes with a unique digital identification code, which is assigned by the manufacturer. A specific process of technology called “programming” is used to configure the fob to work with the specific car's system. This involves turning the ignition of the vehicle repeatedly in a certain sequence. It may also require pulling levers or buttons or removing the fuse. Once the key fob is programmed into the keyless system of your car, it transmits a digital identity code as well as a function-code to instruct the car on what to do (lock, unlock or open the trunk). The receiver in the car verifies that the transmitter is who it claims to be by using an authentication and encryption process. The computer on board will unlock the vehicle and start the engine if it is authorized. There are fears that a clever criminal could intercept the code that's transmitted between the key fob and the car. This would require the use of a device that records the transmission and then retransmits it later in the event that the system doesn't want it. To help combat this, most keyless entry systems rely on a method called rolling code that ensures that every new transmitter signal received by the vehicle has a different counter than the previous one. Batteries A dead battery is the most common reason for the car remote to not function. It's a cheap and easy fix if you have an extra key fob on in your possession to replace the previous one with. The majority of fobs are powered by watches-style batteries, which are available at big-box stores or hardware stores for less than $10. You can find the steps to disassemble your key fob by searching the internet or in your vehicle's manual. Be careful not to damage any of the circuits or antennas within the case once you've removed your battery. They're likely to hold the key fob's program to your specific car, and messing with them can cause it to become impossible to program (and probably not work). If you have to move them, do so very gently because some key fobs have fasteners that can easily open and scatter key fob pieces all over your living room. The majority of key fobs have one hole that can be used with an screwdriver or similar tool to open the case, however it's best to wedge your pry tool around the outside of the case first, as if you were peeling an orange or apple. Don't apply too much pressure, as the case of the key fob is typically constructed of plastic and is susceptible to breaking or cracking with too much force. When you're ready for replacing the battery, be sure to match its size and type to the 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 problem persists, you can try again using your key fob after installing the new battery. If this doesn't work then you'll have to determine if the fob is experiencing an issue that is more complicated and requires a professional diagnosis. It could be necessary to have the key fob reprogrammed by a dealer or buy another one. Buttons The buttons on your key fob are small, and they're packed with delicate electronic components. It's not a surprise that they will malfunction from time to time. If the button on your car's ignition suddenly stops working, you'll be able to usually fix it yourself. One of the most common reasons why a car key remote doesn't work is because dirt or grit has become lodged between the buttons. To remedy remote key repairs , take out the batteries with care and scrub each button with the help of a cotton swab which has been submerged in rubbing alcohol. Make sure to dry them thoroughly prior to installing the batteries. It's possible that your key fob was damaged in any way, for example, being dropped on concrete or accidentally scratched. If this is the case, you can test the functionality of your key fob by using another one. key fob repair could have been unable to function in your vehicle. This is a tiny metal piece that is attached to the door lock button on your key fob and it's not uncommon for this sensor to break following long-term 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 other options fail, you can test the functionality of the spare key by attempting to open and close your doors with it. If the spare key does not work, you might need to contact a 24-hour locksmith who offers automobile key repair to get your remote working again. You can change the settings on your computer if your car key button works, but it still doesn't lock or unlock the vehicle. If you have had the same key fob a while, it may need to be reset every few months in order to continue to work with your vehicle. It's not optimal, but it's better than having to buy another remote.