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Car Key Repair – How to Fix a Dead Remote The car remotes are a great convenience for drivers. They can unlock doors, open trunks, and even start the car. But, these remotes sometimes stop working at inconvenient times. Before you visit the dealer, you can try a few quick solutions in case your key fob isn't working. These tips 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 be opened and the engine will begin. It's a useful feature that has made the experience of car driving more comfortable and more secure. The keyless entry system, as any other device, could be damaged through repeated use or by other factors. If you have problems with yours, you can either go to the dealer or contact a 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 detects the signal, the vehicle's doors are unlocked and the computer on board is activated. Some systems include another receiver mounted on the trunk of the car that opens it automatically when you move your foot on it. Each key fob is given an individual digital identification number by the manufacturer. The fob is programmed with a proprietary process called “programming”. This involves turning on the ignition of the vehicle several times in a specific sequence. It may also require pulling buttons or levers or levers or removing the fuse. Once the key fob is programmed into the keyless system of your car, it transmits a digital identification code and a function code that instruct the car on what to do (lock the trunk, unlock it or open the trunk). The car's receiver confirms that the transmitter is the person it claims to be using an authentication and encryption procedure. The computer on board will unlock the vehicle and start the engine if it is authorized. A savvy criminal could steal and then use the code that is transmitted between the keyfob's and the vehicle. This would require a specific device to record the transmission then transmit it again when the system isn't expecting it. To combat this, most keyless entry systems use the rolling code method, which ensures that each new transmitter signal received by the vehicle has a different counter value than the previous one. key fob repairs is the main reason for the car remote to not function. It's a simple and inexpensive fix when you have an extra key fob on your desk to replace the old one with. The majority of fobs are powered by watches-style batteries, which can be purchased at hardware stores or big-box stores for less than $10. You can find instructions to disassemble your key fob on the internet or in your vehicle's manual. Once you've removed the battery, make sure not to disrupt any antennas or circuits within the case. If you mess with them, the key fob will be unprogrammable and won't work. If key repairs need to move key fobs, be careful. Certain key fobs might come with fasteners that are able to pop out and scatter key fob pieces across your living space. Most key fobs come with one hole that can be used with a screwdriver or other pry tool to open the case. However, it's a good idea use your tool to wedge it around the outside of the case first, just as you were peeling an orange or apple. Don't apply too much pressure since the case of the key fob is generally constructed of plastic and can crack or break with too much force. Be sure to ensure that the size and type of battery to your key fob when replacing it. Some fobs require two batteries, whereas others have just one. Using the incorrect battery could render your remote key fob ineffective. After key repairs has been put in place, try using your key fob for the second time to see if the battery has fixed your issue. If it doesn't, you'll need to determine if your fob has an issue that's more complex that requires a professional diagnosis and repair. It could be necessary to have your key fob reprogrammed by a dealer or buy an entirely new one. Buttons The buttons on your key fob might be small however they're packed with electronics. It's not surprising that they'll fail from time-to-time. If your car key button suddenly ceases to function, you can typically fix it yourself. The most frequent reason why that a car remote stop functioning is due to dirt or crud has gotten trapped between the button. To remove this obstruction take care to remove both batteries and clean each button by using a cotton swab, coated with rubbing alcohol. Make sure to dry them completely before installing the batteries. It's possible that the key fob was harmed by accident, such as being dropped on concrete, or perhaps scratched by something sharp. If this is the scenario, you can test the functionality of your key fob by using a different one. The door lock sensor might have been unable to function in your vehicle. It's 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 usage or exposure to harsh weather conditions. To reactivate the sensor, simply try pressing your key button a few times without locking or unlocking your doors to reset it. If nothing else works, you can always test the function of a spare key by opening and locking your doors using it. If the spare key does not work, you may have to contact a locksmith on call 24 hours a day who can repair your car keys to make your remote work again. You can reprogram your computer if your car's key button is working but doesn't lock or unlock the vehicle. If you've used the same key fob a while, it may need to be reset every couple of months to continue working with your vehicle. It's not optimal, but it's better than buying a new remote.