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Car Key Repair - How to Fix a Dead Remote

The car remotes are a wonderful convenience for drivers. They can unlock doors, open trunks, and even start the car. However, they may stop working at inconvenient times.

If you discover that your key fob no longer working, try a few quick fixes before heading 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, push a button on your key fob and then unlock the doors and start the engine. It's a convenient feature that has made the world of driving a car more enjoyable and more secure. The keyless entry system, like any other device, can be damaged through 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 an emergency locksmith in your area.

The way a keyless entry system functions is by sending radio signals, and then searching for a corresponding response from the key fob. If the system is able to recognize the signal, it will trigger to unlock the car doors and also activate the onboard computer. Certain systems include an additional transmitter in the trunk of the car which opens when you move your foot beneath it.

Each key fob is assigned a unique digital identification code by the manufacturer. A specific process of technology called "programming" is used to make sure that the fob is set up with a specific car's system. This typically involves turning the ignition of the car key fob repair multiple times in a particular sequence and may include pulling or pushing various levers and buttons or the removal of fuse.

Once the 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 to (lock or unlock the trunk). The receiver in the car verifies that the transmitter is who it claims to be through an authentication and encryption procedure. The onboard computer will unlock the vehicle and start the engine if it's authorized.

A clever criminal could intercept and use the code sent between the keyfob and vehicle. This would require a special device to record the transmission then retransmit it later when the system isn't expecting it. Most keyless entry systems use a rolling code method to combat this. This ensures that every new signal from a transmitter received by a car has a counter that differs from the previous one.

Batteries

The most common cause of car remotes key car repair fobs not working is an inoperative battery. If you have an extra key fob it's a simple and inexpensive fix. The majority of fobs are powered by watch-style batteries, which can be purchased at big-box stores or hardware stores for less than $10. A quick search of the internet or in your vehicle's owner's manual will provide directions on how to disassemble your key fob and replace the battery.

After you've removed your battery, be sure not to disturb any circuits or antennas inside the case. If you mess with them the key fob will become unprogrammable and may not work. If you need to move key fobs, take care. Certain key fobs might have fasteners which can easily be removed and scatter key fob pieces across your living space.

The case of a majority of key fobs has a single screwdriver hole. To open it, use a tool to pry it open. However, before you begin, wedge the pry tool along the outside edge of the case, just as you would when peeling an orange or apple. Don't apply too much pressure, as the case of the key fob is typically made of plastic and can crack or break if you apply too much force to it.

When you're ready to replace the battery, make sure to match the size and type to the key fob. Some fobs require two batteries, while others have only one, and the wrong battery can make your remote key fob useless.

After the new battery has been put in place, try using your key fob again to see if it solves your problem. If not it, you'll have to determine whether your key fob is suffering from an issue that is more complex and requires professional diagnosis and repair. If this is the case, you could require it to be reprogrammed by a dealer, or you may need to purchase a new key fob entirely.

Buttons

The buttons on your key fob are pretty tiny, and packed with delicate electronic components. It's not a surprise that they will malfunction from time to time. The good news is, if your car key button isn't working, there's usually something you can do to fix it yourself.

One of the most frequent reasons that a car key remote key fob repairs fails to function is that dirt or crud has become lodged between the buttons. To remove this obstruction remove the batteries and scrub each button using a cotton swab that has been dipped in alcohol rubbing. Be sure to dry them completely before reinstalling the batteries.

It's possible that your key fob was damaged in some way, like being dropped on concrete or accidentally scratched. If this is the case, you can test the function of your key fob using another one.

The door lock sensor might have stopped working in your car. It's a tiny metal piece that is connected to the key fob's door lock button. It's not uncommon for it to break due to weather conditions or prolonged use. Press your key button several times without locking or unlocking your doors. This resets the sensor.

If nothing else works, you can always test the functionality of a spare by unlocking and locking your doors with it. If the spare key does not work, it could be necessary to locate an emergency locksmith who can provide car key repair to make your remote control Car key repairs work again.

If the car key button is working but still not locking or unlocking the vehicle, try to reprogram your computer system. If you've used the same key fob a time, it might require reprogramming every couple of months to continue to work with your vehicle. It's not an ideal situation, but it's better than having to replace your remote entirely.